[Software] [Solved] Kea HA does not work "unable to forward command to the dhcp4 service: ...The server is..

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weiss
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[Software] [Solved] Kea HA does not work "unable to forward command to the dhcp4 service: ...The server is..

#1 Post by weiss »

I would like to replace my existing ISC-DHCP HA installation with a KEA HA solution, as the ISC-DHCP server has reached the end of its support life.

The kea-dhcp4-server works perfectly :) . But I cannot get the high availability with the mode “hot-standby” and the variant “memfile” to work. :(
I probably have an understanding problem in the configuration of kea-ctrl-agent.conf . Unfortunately, I have not found a solution for similar errors (which I have searched for on the Internet). I have already set the debug level to maximum, but unfortunately this does not give me a clear error message. Perhaps I also lack a certain basic knowledge. I would be very happy to receive support with the error diagnosis or suggestions for improved diagnosis :-) .

Please do not be confused by the names used, they are both x64 installations.

Here is my installation base and the configuration files and log files:

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 -the software version of both servers is identical
Server 1
root@debian1:~# uname -a
Linux debian1 6.1.0-28-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.119-1 (2024-11-22) x86_64 GNU/Linux
ip a
2: ens18: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether bc:24:11:06:e3:ca brd ff:ff:ff:ff:ff:ff
    altname enp0s18
    inet 192.168.1.220/24 brd 192.168.1.255 scope global ens18
       valid_lft forever preferred_lft forever

Server 2
root@debian2:~# uname -a
Linux debian2 6.1.0-28-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.119-1 (2024-11-22) x86_64 GNU/Linux
root@debian2:~# ip a
2: ens18: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether bc:24:11:d7:15:b3 brd ff:ff:ff:ff:ff:ff
    altname enp0s18
    inet 192.168.1.221/24 brd 192.168.1.255 scope global ens18
       valid_lft forever preferred_lft forever

root@debian1:~# dpkg -l| grep kea
ii  kea-common                   2.2.0-6                        amd64        Common libraries for the Kea DHCP server
ii  kea-ctrl-agent               2.2.0-6                        amd64        REST API service for Kea DHCP server
ii  kea-dhcp4-server             2.2.0-6                        amd64        IPv4 DHCP server
ii  python3-kea-connector        2.2.0-6                        all          Python3 management connector for Kea DHCP server

root@debian1:~# apt policy kea-ctrl-agent
kea-ctrl-agent:
  Installiert:           2.2.0-6
  Installationskandidat: 2.2.0-6
  Versionstabelle:
 *** 2.2.0-6 500
        500 http://deb.debian.org/debian bookworm/main amd64 Packages
        100 /var/lib/dpkg/status
Result of the recommended test

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root@debian1:~# curl -X POST -H "Content-Type: application/json" -d '{ "command": "config-get", "service": [ "dhcp4" ] }'  http://192.168.1.221:8000/
[ { "result": 1, "text": "unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline" } ]

root@debian2:~# curl -X POST -H "Content-Type: application/json" -d '{ "command": "config-get", "service": [ "dhcp4" ] }'  http://192.168.1.220:8000/
[ { "result": 1, "text": "unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline" } ]

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 Server1
kea-ctrl-agent.conf 

"Control-agent": {
    "http-host": "192.168.1.220",
    "http-port": 8000,
    "control-sockets": {
        "dhcp4": {
            "socket-type": "unix",
            "socket-name": "/run/kea/kea4-ctrl-socket"
        },
        // "dhcp6": {
        //    "socket-type": "unix",
        //    "socket-name": "/run/kea/kea6-ctrl-socket"
        //},
        "d2": {
            "socket-type": "unix",
            "socket-name": "/run/kea/kea-ddns-ctrl-socket"
        }
    },
    "hooks-libraries": [
    ],
    "loggers": [
    {
        // This specifies the logging for Control Agent daemon.
        "name": "kea-ctrl-agent",
        "output_options": [
            {
                "output": "stderr",
                "pattern": "%-5p %m\n"
            }
        ],
        "severity": "DEBUG",

        // If DEBUG level is specified, this value is used. 0 is least verbose,
        // 99 is most verbose.
        "debuglevel": 99
    }
  ]
}
}

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Server2
kea-ctrl-agent.conf 
{

// This is a basic configuration for the Kea Control Agent.
// RESTful interface to be available at http://127.0.0.1:8000/
"Control-agent": {
    "http-host": "192.168.1.221",
     "http-port": 8000,
    "control-sockets": {
        "dhcp4": {
            "socket-type": "unix",
            "socket-name": "/run/kea/kea4-ctrl-socket"
        },
        // "dhcp6": {
        //    "socket-type": "unix",
        //    "socket-name": "/run/kea/kea6-ctrl-socket"
        //},
        "d2": {
            "socket-type": "unix",
            "socket-name": "/run/kea/kea-ddns-ctrl-socket"
        }
    },

    "hooks-libraries": [
    ],

    "loggers": [
    {
        // This specifies the logging for Control Agent daemon.
        "name": "kea-ctrl-agent",
        "output_options": [
            {
                "output": "stderr",
                "pattern": "%-5p %m\n"
            }
        ],
        "severity": "DEBUG",

        // If DEBUG level is specified, this value is used. 0 is least verbose,
        // 99 is most verbose. 
        "debuglevel": 99
    }
  ]
}
}

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root@debian1:~# netstat -plan | grep 8000
tcp        0      0 192.168.1.220:8000      0.0.0.0:*               LISTEN      441/kea-ctrl-agent  
tcp        0      0 192.168.1.220:8000      192.168.1.221:60032     VERBUNDEN   441/kea-ctrl-agent  
tcp        0      0 192.168.1.220:55212     192.168.1.221:8000      VERBUNDEN   445/kea-dhcp4 

root@debian2:~# netstat -plan | grep 8000
tcp        0      0 192.168.1.221:8000      0.0.0.0:*               LISTEN      427/kea-ctrl-agent  
tcp        0      0 192.168.1.221:8000      192.168.1.220:55212     VERBUNDEN   427/kea-ctrl-agent  
tcp        0      0 192.168.1.221:60032     192.168.1.220:8000      VERBUNDEN   432/kea-dhcp4

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root@debian1:~# journalctl -b|grep kea 

Dez 10 10:34:37 debian1 systemd[1]: Started kea-ctrl-agent.service - Kea Control Agent.
Dez 10 10:34:37 debian1 systemd[1]: Starting kea-dhcp4-server.service - Kea IPv4 DHCP daemon...
Dez 10 10:34:37 debian1 systemd[1]: Started kea-dhcp4-server.service - Kea IPv4 DHCP daemon.
Dez 10 10:34:37 debian1 kea-ctrl-agent[441]: 2024-12-10 10:34:37.841 INFO  [kea-ctrl-agent.dctl/441.139963289622400] DCTL_STARTING Control-agent starting, pid: 441, version: 2.2.0 (stable)
Dez 10 10:34:37 debian1 kea-ctrl-agent[441]: DEBUG DCTL_CONFIG_START parsing new configuration: { "control-sockets": { "d2": { "socket-name": "/run/kea/kea-ddns-ctrl-socket", "socket-type": "unix" }, "dhcp4": { "socket-name": "/run/kea/kea4-ctrl-socket", "socket-type": "unix" } }, "hooks-libraries": [  ], "http-host": "192.168.1.220", "http-port": 8000, "loggers": [ { "debuglevel": 99, "name": "kea-ctrl-agent", "output_options": [ { "output": "stderr", "pattern": "%-5p %m\n" } ], "severity": "DEBUG" } ] }
Dez 10 10:34:37 debian1 kea-ctrl-agent[441]: INFO  CTRL_AGENT_HTTP_SERVICE_STARTED HTTP service bound to address 192.168.1.220:8000
Dez 10 10:34:37 debian1 kea-ctrl-agent[441]: INFO  DCTL_CONFIG_COMPLETE server has completed configuration: listening on 192.168.1.220, port 8000, control sockets: d2 dhcp4, 0 lib(s):
Dez 10 10:34:37 debian1 kea-ctrl-agent[441]: DEBUG DCTL_RUN_PROCESS Control-agent starting application event loop
Dez 10 10:34:37 debian1 kea-ctrl-agent[441]: INFO  CTRL_AGENT_STARTED Kea Control Agent version 2.2.0 started
Dez 10 10:34:37 debian1 kea-ctrl-agent[441]: DEBUG COMMAND_REGISTERED Command list-commands registered
Dez 10 10:34:37 debian1 kea-ctrl-agent[441]: DEBUG COMMAND_REGISTERED Command build-report registered
Dez 10 10:34:37 debian1 kea-ctrl-agent[441]: DEBUG COMMAND_REGISTERED Command config-get registered
Dez 10 10:34:37 debian1 kea-ctrl-agent[441]: DEBUG COMMAND_REGISTERED Command config-reload registered
Dez 10 10:34:37 debian1 kea-ctrl-agent[441]: DEBUG COMMAND_REGISTERED Command config-set registered
Dez 10 10:34:37 debian1 kea-ctrl-agent[441]: DEBUG COMMAND_REGISTERED Command config-test registered
Dez 10 10:34:37 debian1 kea-ctrl-agent[441]: DEBUG COMMAND_REGISTERED Command config-write registered
Dez 10 10:34:37 debian1 kea-ctrl-agent[441]: DEBUG COMMAND_REGISTERED Command shutdown registered
Dez 10 10:34:37 debian1 kea-ctrl-agent[441]: DEBUG COMMAND_REGISTERED Command status-get registered
Dez 10 10:34:37 debian1 kea-ctrl-agent[441]: DEBUG COMMAND_REGISTERED Command version-get registered
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.866 INFO  [kea-dhcp4.dhcp4/445.139974734107136] DHCP4_STARTING Kea DHCPv4 server version 2.2.0 (stable) starting
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.869 INFO  [kea-dhcp4.hosts/445.139974734107136] HOSTS_BACKENDS_REGISTERED the following host backend types are available: mysql postgresql
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.870 INFO  [kea-dhcp4.dhcpsrv/445.139974734107136] DHCPSRV_CFGMGR_ADD_IFACE listening on interface ens18
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.870 INFO  [kea-dhcp4.dhcpsrv/445.139974734107136] DHCPSRV_CFGMGR_SOCKET_TYPE_DEFAULT "dhcp-socket-type" not specified , using default socket type raw
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.872 INFO  [kea-dhcp4.hooks/445.139974734107136] HOOKS_LIBRARY_CLOSED hooks library /usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_lease_cmds.so successfully closed
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.874 INFO  [kea-dhcp4.hooks/445.139974734107136] HOOKS_LIBRARY_CLOSED hooks library /usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_ha.so successfully closed
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.875 INFO  [kea-dhcp4.dhcpsrv/445.139974734107136] DHCPSRV_CFGMGR_NEW_SUBNET4 a new subnet has been added to configuration: 192.168.1.0/24 with params: t1=21600, t2=43200, valid-lifetime=86400
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.876 INFO  [kea-dhcp4.lease-cmds-hooks/445.139974734107136] LEASE_CMDS_INIT_OK loading Lease Commands hooks library successful
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.876 INFO  [kea-dhcp4.hooks/445.139974734107136] HOOKS_LIBRARY_LOADED hooks library /usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_lease_cmds.so successfully loaded
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.876 INFO  [kea-dhcp4.ha-hooks/445.139974734107136] HA_CONFIGURATION_SUCCESSFUL HA hook library has been successfully configured
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.877 INFO  [kea-dhcp4.ha-hooks/445.139974734107136] HA_INIT_OK loading High Availability hooks library successful
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.877 INFO  [kea-dhcp4.hooks/445.139974734107136] HOOKS_LIBRARY_LOADED hooks library /usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_ha.so successfully loaded
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.877 INFO  [kea-dhcp4.dhcp4/445.139974734107136] DHCP4_CONFIG_COMPLETE DHCPv4 server has completed configuration: added IPv4 subnets: 1; DDNS: disabled
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.877 INFO  [kea-dhcp4.dhcpsrv/445.139974734107136] DHCPSRV_MEMFILE_DB opening memory file lease database: name=/var/lib/kea/kea-leases4.csv persist=true type=memfile universe=4
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.877 INFO  [kea-dhcp4.dhcpsrv/445.139974734107136] DHCPSRV_MEMFILE_LEASE_FILE_LOAD loading leases from file /var/lib/kea/kea-leases4.csv
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.878 INFO  [kea-dhcp4.dhcpsrv/445.139974734107136] DHCPSRV_MEMFILE_LFC_SETUP setting up the Lease File Cleanup interval to 3600 sec
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.897 INFO  [kea-dhcp4.ha-hooks/445.139974734107136] HA_LOCAL_DHCP_DISABLE local DHCP service is disabled while the server1_raspi4b is in the WAITING state
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.897 INFO  [kea-dhcp4.ha-hooks/445.139974734107136] HA_SERVICE_STARTED started high availability service in hot-standby mode as primary server
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.897 WARN  [kea-dhcp4.dhcp4/445.139974734107136] DHCP4_MULTI_THREADING_INFO enabled: no, number of threads: 0, queue size: 0
Dez 10 10:34:37 debian1 kea-dhcp4[445]: 2024-12-10 10:34:37.897 INFO  [kea-dhcp4.dhcp4/445.139974734107136] DHCP4_STARTED Kea DHCPv4 server version 2.2.0 started
Dez 10 10:34:48 debian1 kea-dhcp4[445]: 2024-12-10 10:34:48.923 WARN  [kea-dhcp4.ha-hooks/445.139974734107136] HA_HEARTBEAT_FAILED heartbeat to server2_odroid (http://192.168.1.221:8000/) failed: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline, error code 1
Dez 10 10:34:48 debian1 kea-dhcp4[445]: 2024-12-10 10:34:48.923 WARN  [kea-dhcp4.ha-hooks/445.139974734107136] HA_COMMUNICATION_INTERRUPTED communication with server2_odroid is interrupted
Dez 10 10:34:48 debian1 kea-dhcp4[445]: 2024-12-10 10:34:48.923 INFO  [kea-dhcp4.ha-hooks/445.139974734107136] HA_STATE_TRANSITION server transitions from WAITING to PARTNER-DOWN state, partner state is UNDEFINED
Dez 10 10:34:48 debian1 kea-dhcp4[445]: 2024-12-10 10:34:48.923 INFO  [kea-dhcp4.ha-hooks/445.139974734107136] HA_LEASE_UPDATES_DISABLED lease updates will not be sent to the partner while in PARTNER-DOWN state
Dez 10 10:34:48 debian1 kea-dhcp4[445]: 2024-12-10 10:34:48.923 INFO  [kea-dhcp4.ha-hooks/445.139974734107136] HA_LOCAL_DHCP_ENABLE local DHCP service is enabled while the server1_raspi4b is in the PARTNER-DOWN state
Dez 10 10:34:49 debian1 kea-ctrl-agent[441]: DEBUG HTTP_REQUEST_RECEIVE_START start receiving request from 192.168.1.221 with timeout 10
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: DEBUG HTTP_DATA_RECEIVED received 145 bytes from 192.168.1.221
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED received HTTP request from 192.168.1.221
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED_DETAILS detailed information about well-formed request received from 192.168.1.221:
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: POST / HTTP/1.1
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: Host: 192.168.1.220
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: Content-Length: 53
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: Content-Type: application/json
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: 
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: { "command": "ha-heartbeat", "service": [ "dhcp4" ] }
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: INFO  COMMAND_RECEIVED Received command 'ha-heartbeat'
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: INFO  CTRL_AGENT_COMMAND_RECEIVED command ha-heartbeat received from remote address 192.168.1.221
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: DEBUG CTRL_AGENT_COMMAND_FORWARD_BEGIN begin forwarding command ha-heartbeat to service dhcp4
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: DEBUG CTRL_AGENT_COMMAND_FORWARD_FAILED failed forwarding command ha-heartbeat: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: DEBUG HTTP_SERVER_RESPONSE_SEND sending HTTP response HTTP/1.1 200 OK to 192.168.1.221
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: DEBUG HTTP_SERVER_RESPONSE_SEND_DETAILS detailed information about response sent to 192.168.1.221:
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: HTTP/1.1 200 OK
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: Content-Length: 140
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: Content-Type: application/json
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: Date: Tue, 10 Dec 2024 09:34:50 GMT
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: 
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: [ { "result": 1, "text": "unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline" } ]
Dez 10 10:34:58 debian1 kea-dhcp4[445]: 2024-12-10 10:34:58.938 WARN  [kea-dhcp4.ha-hooks/445.139974734107136] HA_HEARTBEAT_FAILED heartbeat to server2_odroid (http://192.168.1.221:8000/) failed: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline, error code 1
Dez 10 10:34:58 debian1 kea-dhcp4[445]: 2024-12-10 10:34:58.938 WARN  [kea-dhcp4.ha-hooks/445.139974734107136] HA_COMMUNICATION_INTERRUPTED communication with server2_odroid is interrupted
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: DEBUG HTTP_DATA_RECEIVED received 145 bytes from 192.168.1.221
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED received HTTP request from 192.168.1.221
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED_DETAILS detailed information about well-formed request received from 192.168.1.221:
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: POST / HTTP/1.1
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: Host: 192.168.1.220
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: Content-Length: 53
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: Content-Type: application/json
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: 
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: { "command": "ha-heartbeat", "service": [ "dhcp4" ] }
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: INFO  COMMAND_RECEIVED Received command 'ha-heartbeat'
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: INFO  CTRL_AGENT_COMMAND_RECEIVED command ha-heartbeat received from remote address 192.168.1.221
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: DEBUG CTRL_AGENT_COMMAND_FORWARD_BEGIN begin forwarding command ha-heartbeat to service dhcp4
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: DEBUG CTRL_AGENT_COMMAND_FORWARD_FAILED failed forwarding command ha-heartbeat: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: DEBUG HTTP_SERVER_RESPONSE_SEND sending HTTP response HTTP/1.1 200 OK to 192.168.1.221
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: DEBUG HTTP_SERVER_RESPONSE_SEND_DETAILS detailed information about response sent to 192.168.1.221:
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: HTTP/1.1 200 OK
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: Content-Length: 140
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: Content-Type: application/json
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: Date: Tue, 10 Dec 2024 09:35:00 GMT
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: 
Dez 10 10:35:00 debian1 kea-ctrl-agent[441]: [ { "result": 1, "text": "unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline" } ]
Dez 10 10:35:09 debian1 kea-dhcp4[445]: 2024-12-10 10:35:09.273 WARN  [kea-dhcp4.ha-hooks/445.139974734107136] HA_HEARTBEAT_FAILED heartbeat to server2_odroid (http://192.168.1.221:8000/) failed: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline, error code 1
Dez 10 10:35:09 debian1 kea-dhcp4[445]: 2024-12-10 10:35:09.273 WARN  [kea-dhcp4.ha-hooks/445.139974734107136] HA_COMMUNICATION_INTERRUPTED communication with server2_odroid is interrupted
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: DEBUG HTTP_DATA_RECEIVED received 145 bytes from 192.168.1.221
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED received HTTP request from 192.168.1.221
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED_DETAILS detailed information about well-formed request received from 192.168.1.221:
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: POST / HTTP/1.1
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: Host: 192.168.1.220
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: Content-Length: 53
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: Content-Type: application/json
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: 
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: { "command": "ha-heartbeat", "service": [ "dhcp4" ] }
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: INFO  COMMAND_RECEIVED Received command 'ha-heartbeat'
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: INFO  CTRL_AGENT_COMMAND_RECEIVED command ha-heartbeat received from remote address 192.168.1.221
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: DEBUG CTRL_AGENT_COMMAND_FORWARD_BEGIN begin forwarding command ha-heartbeat to service dhcp4
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: DEBUG CTRL_AGENT_COMMAND_FORWARD_FAILED failed forwarding command ha-heartbeat: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: DEBUG HTTP_SERVER_RESPONSE_SEND sending HTTP response HTTP/1.1 200 OK to 192.168.1.221
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: DEBUG HTTP_SERVER_RESPONSE_SEND_DETAILS detailed information about response sent to 192.168.1.221:
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: HTTP/1.1 200 OK
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: Content-Length: 140
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: Content-Type: application/json
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: Date: Tue, 10 Dec 2024 09:35:12 GMT
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: 
Dez 10 10:35:12 debian1 kea-ctrl-agent[441]: [ { "result": 1, "text": "unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline" } ]
Dez 10 10:35:19 debian1 kea-dhcp4[445]: 2024-12-10 10:35:19.288 WARN  [kea-dhcp4.ha-hooks/445.139974734107136] HA_HEARTBEAT_FAILED heartbeat to server2_odroid (http://192.168.1.221:8000/) failed: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline, error code 1
Dez 10 10:35:19 debian1 kea-dhcp4[445]: 2024-12-10 10:35:19.288 WARN  [kea-dhcp4.ha-hooks/445.139974734107136] HA_COMMUNICATION_INTERRUPTED communication with server2_odroid is interrupted
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: DEBUG HTTP_DATA_RECEIVED received 145 bytes from 192.168.1.221
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED received HTTP request from 192.168.1.221
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED_DETAILS detailed information about well-formed request received from 192.168.1.221:
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: POST / HTTP/1.1
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: Host: 192.168.1.220
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: Content-Length: 53
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: Content-Type: application/json
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: 
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: { "command": "ha-heartbeat", "service": [ "dhcp4" ] }
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: INFO  COMMAND_RECEIVED Received command 'ha-heartbeat'
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: INFO  CTRL_AGENT_COMMAND_RECEIVED command ha-heartbeat received from remote address 192.168.1.221
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: DEBUG CTRL_AGENT_COMMAND_FORWARD_BEGIN begin forwarding command ha-heartbeat to service dhcp4
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: DEBUG CTRL_AGENT_COMMAND_FORWARD_FAILED failed forwarding command ha-heartbeat: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: DEBUG HTTP_SERVER_RESPONSE_SEND sending HTTP response HTTP/1.1 200 OK to 192.168.1.221
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: DEBUG HTTP_SERVER_RESPONSE_SEND_DETAILS detailed information about response sent to 192.168.1.221:
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: HTTP/1.1 200 OK
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: Content-Length: 140
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: Content-Type: application/json
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: Date: Tue, 10 Dec 2024 09:35:22 GMT
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: 
Dez 10 10:35:22 debian1 kea-ctrl-agent[441]: [ { "result": 1, "text": "unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline" } ]
Dez 10 10:35:29 debian1 kea-dhcp4[445]: 2024-12-10 10:35:29.302 WARN  [kea-dhcp4.ha-hooks/445.139974734107136] HA_HEARTBEAT_FAILED heartbeat to server2_odroid (http://192.168.1.221:8000/) failed: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline, error code 1
Dez 10 10:35:29 debian1 kea-dhcp4[445]: 2024-12-10 10:35:29.302 WARN  [kea-dhcp4.ha-hooks/445.139974734107136] HA_COMMUNICATION_INTERRUPTED communication with server2_odroid is interrupted
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: DEBUG HTTP_DATA_RECEIVED received 145 bytes from 192.168.1.221
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED received HTTP request from 192.168.1.221
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED_DETAILS detailed information about well-formed request received from 192.168.1.221:
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: POST / HTTP/1.1
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: Host: 192.168.1.220
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: Content-Length: 53
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: Content-Type: application/json
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: 
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: { "command": "ha-heartbeat", "service": [ "dhcp4" ] }
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: INFO  COMMAND_RECEIVED Received command 'ha-heartbeat'
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: INFO  CTRL_AGENT_COMMAND_RECEIVED command ha-heartbeat received from remote address 192.168.1.221
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: DEBUG CTRL_AGENT_COMMAND_FORWARD_BEGIN begin forwarding command ha-heartbeat to service dhcp4
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: DEBUG CTRL_AGENT_COMMAND_FORWARD_FAILED failed forwarding command ha-heartbeat: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: DEBUG HTTP_SERVER_RESPONSE_SEND sending HTTP response HTTP/1.1 200 OK to 192.168.1.221
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: DEBUG HTTP_SERVER_RESPONSE_SEND_DETAILS detailed information about response sent to 192.168.1.221:
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: HTTP/1.1 200 OK
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: Content-Length: 140
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: Content-Type: application/json
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: Date: Tue, 10 Dec 2024 09:35:32 GMT
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: 
Dez 10 10:35:32 debian1 kea-ctrl-agent[441]: [ { "result": 1, "text": "unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline" } ]
Dez 10 10:35:39 debian1 kea-dhcp4[445]: 2024-12-10 10:35:39.318 WARN  [kea-dhcp4.ha-hooks/445.139974734107136] HA_HEARTBEAT_FAILED heartbeat to server2_odroid (http://192.168.1.221:8000/) failed: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline, error code 1
Dez 10 10:35:39 debian1 kea-dhcp4[445]: 2024-12-10 10:35:39.318 WARN  [kea-dhcp4.ha-hooks/445.139974734107136] HA_COMMUNICATION_INTERRUPTED communication with server2_odroid is interrupted
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: DEBUG HTTP_DATA_RECEIVED received 145 bytes from 192.168.1.221
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED received HTTP request from 192.168.1.221
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED_DETAILS detailed information about well-formed request received from 192.168.1.221:
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: POST / HTTP/1.1
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: Host: 192.168.1.220
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: Content-Length: 53
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: Content-Type: application/json
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: 
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: { "command": "ha-heartbeat", "service": [ "dhcp4" ] }
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: INFO  COMMAND_RECEIVED Received command 'ha-heartbeat'
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: INFO  CTRL_AGENT_COMMAND_RECEIVED command ha-heartbeat received from remote address 192.168.1.221
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: DEBUG CTRL_AGENT_COMMAND_FORWARD_BEGIN begin forwarding command ha-heartbeat to service dhcp4
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: DEBUG CTRL_AGENT_COMMAND_FORWARD_FAILED failed forwarding command ha-heartbeat: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: DEBUG HTTP_SERVER_RESPONSE_SEND sending HTTP response HTTP/1.1 200 OK to 192.168.1.221
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: DEBUG HTTP_SERVER_RESPONSE_SEND_DETAILS detailed information about response sent to 192.168.1.221:
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: HTTP/1.1 200 OK
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: Content-Length: 140
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: Content-Type: application/json
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: Date: Tue, 10 Dec 2024 09:35:42 GMT
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: 
Dez 10 10:35:42 debian1 kea-ctrl-agent[441]: [ { "result": 1, "text": "unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline" } ]
...

Code: Select all

root@debian2:~# journalctl -b|grep kea 
Dez 10 10:34:40 debian2 systemd[1]: Started kea-ctrl-agent.service - Kea Control Agent.
Dez 10 10:34:40 debian2 systemd[1]: Starting kea-dhcp4-server.service - Kea IPv4 DHCP daemon...
Dez 10 10:34:40 debian2 systemd[1]: Started kea-dhcp4-server.service - Kea IPv4 DHCP daemon.
Dez 10 10:34:40 debian2 kea-ctrl-agent[427]: 2024-12-10 10:34:40.795 INFO  [kea-ctrl-agent.dctl/427.140025023485824] DCTL_STARTING Control-agent starting, pid: 427, version: 2.2.0 (stable)
Dez 10 10:34:40 debian2 kea-ctrl-agent[427]: DEBUG DCTL_CONFIG_START parsing new configuration: { "control-sockets": { "d2": { "socket-name": "/run/kea/kea-ddns-ctrl-socket", "socket-type": "unix" }, "dhcp4": { "socket-name": "/run/kea/kea4-ctrl-socket", "socket-type": "unix" } }, "hooks-libraries": [  ], "http-host": "192.168.1.221", "http-port": 8000, "loggers": [ { "debuglevel": 99, "name": "kea-ctrl-agent", "output_options": [ { "output": "stderr", "pattern": "%-5p %m\n" } ], "severity": "DEBUG" } ] }
Dez 10 10:34:40 debian2 kea-ctrl-agent[427]: INFO  CTRL_AGENT_HTTP_SERVICE_STARTED HTTP service bound to address 192.168.1.221:8000
Dez 10 10:34:40 debian2 kea-ctrl-agent[427]: INFO  DCTL_CONFIG_COMPLETE server has completed configuration: listening on 192.168.1.221, port 8000, control sockets: d2 dhcp4, 0 lib(s):
Dez 10 10:34:40 debian2 kea-ctrl-agent[427]: DEBUG DCTL_RUN_PROCESS Control-agent starting application event loop
Dez 10 10:34:40 debian2 kea-ctrl-agent[427]: INFO  CTRL_AGENT_STARTED Kea Control Agent version 2.2.0 started
Dez 10 10:34:40 debian2 kea-ctrl-agent[427]: DEBUG COMMAND_REGISTERED Command list-commands registered
Dez 10 10:34:40 debian2 kea-ctrl-agent[427]: DEBUG COMMAND_REGISTERED Command build-report registered
Dez 10 10:34:40 debian2 kea-ctrl-agent[427]: DEBUG COMMAND_REGISTERED Command config-get registered
Dez 10 10:34:40 debian2 kea-ctrl-agent[427]: DEBUG COMMAND_REGISTERED Command config-reload registered
Dez 10 10:34:40 debian2 kea-ctrl-agent[427]: DEBUG COMMAND_REGISTERED Command config-set registered
Dez 10 10:34:40 debian2 kea-ctrl-agent[427]: DEBUG COMMAND_REGISTERED Command config-test registered
Dez 10 10:34:40 debian2 kea-ctrl-agent[427]: DEBUG COMMAND_REGISTERED Command config-write registered
Dez 10 10:34:40 debian2 kea-ctrl-agent[427]: DEBUG COMMAND_REGISTERED Command shutdown registered
Dez 10 10:34:40 debian2 kea-ctrl-agent[427]: DEBUG COMMAND_REGISTERED Command status-get registered
Dez 10 10:34:40 debian2 kea-ctrl-agent[427]: DEBUG COMMAND_REGISTERED Command version-get registered
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.817 INFO  [kea-dhcp4.dhcp4/432.140326744490496] DHCP4_STARTING Kea DHCPv4 server version 2.2.0 (stable) starting
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.820 INFO  [kea-dhcp4.hosts/432.140326744490496] HOSTS_BACKENDS_REGISTERED the following host backend types are available: mysql postgresql
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.821 INFO  [kea-dhcp4.dhcpsrv/432.140326744490496] DHCPSRV_CFGMGR_ADD_IFACE listening on interface ens18
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.821 INFO  [kea-dhcp4.dhcpsrv/432.140326744490496] DHCPSRV_CFGMGR_SOCKET_TYPE_DEFAULT "dhcp-socket-type" not specified , using default socket type raw
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.822 INFO  [kea-dhcp4.hooks/432.140326744490496] HOOKS_LIBRARY_CLOSED hooks library /usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_lease_cmds.so successfully closed
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.825 INFO  [kea-dhcp4.hooks/432.140326744490496] HOOKS_LIBRARY_CLOSED hooks library /usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_ha.so successfully closed
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.825 INFO  [kea-dhcp4.dhcpsrv/432.140326744490496] DHCPSRV_CFGMGR_NEW_SUBNET4 a new subnet has been added to configuration: 192.168.1.0/24 with params: t1=21600, t2=43200, valid-lifetime=86400
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.827 INFO  [kea-dhcp4.lease-cmds-hooks/432.140326744490496] LEASE_CMDS_INIT_OK loading Lease Commands hooks library successful
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.827 INFO  [kea-dhcp4.hooks/432.140326744490496] HOOKS_LIBRARY_LOADED hooks library /usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_lease_cmds.so successfully loaded
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.828 INFO  [kea-dhcp4.ha-hooks/432.140326744490496] HA_CONFIGURATION_SUCCESSFUL HA hook library has been successfully configured
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.828 INFO  [kea-dhcp4.ha-hooks/432.140326744490496] HA_INIT_OK loading High Availability hooks library successful
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.828 INFO  [kea-dhcp4.hooks/432.140326744490496] HOOKS_LIBRARY_LOADED hooks library /usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_ha.so successfully loaded
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.828 INFO  [kea-dhcp4.dhcp4/432.140326744490496] DHCP4_CONFIG_COMPLETE DHCPv4 server has completed configuration: added IPv4 subnets: 1; DDNS: disabled
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.828 INFO  [kea-dhcp4.dhcpsrv/432.140326744490496] DHCPSRV_MEMFILE_DB opening memory file lease database: name=/var/lib/kea/kea-leases4.csv persist=true type=memfile universe=4
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.829 INFO  [kea-dhcp4.dhcpsrv/432.140326744490496] DHCPSRV_MEMFILE_LEASE_FILE_LOAD loading leases from file /var/lib/kea/kea-leases4.csv
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.829 INFO  [kea-dhcp4.dhcpsrv/432.140326744490496] DHCPSRV_MEMFILE_LFC_SETUP setting up the Lease File Cleanup interval to 3600 sec
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.853 INFO  [kea-dhcp4.ha-hooks/432.140326744490496] HA_LOCAL_DHCP_DISABLE local DHCP service is disabled while the server2_odroid is in the WAITING state
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.853 INFO  [kea-dhcp4.ha-hooks/432.140326744490496] HA_SERVICE_STARTED started high availability service in hot-standby mode as standby server
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.853 WARN  [kea-dhcp4.dhcp4/432.140326744490496] DHCP4_MULTI_THREADING_INFO enabled: no, number of threads: 0, queue size: 0
Dez 10 10:34:40 debian2 kea-dhcp4[432]: 2024-12-10 10:34:40.854 INFO  [kea-dhcp4.dhcp4/432.140326744490496] DHCP4_STARTED Kea DHCPv4 server version 2.2.0 started
Dez 10 10:34:48 debian2 kea-ctrl-agent[427]: DEBUG HTTP_REQUEST_RECEIVE_START start receiving request from 192.168.1.220 with timeout 10
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: DEBUG HTTP_DATA_RECEIVED received 145 bytes from 192.168.1.220
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED received HTTP request from 192.168.1.220
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED_DETAILS detailed information about well-formed request received from 192.168.1.220:
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: POST / HTTP/1.1
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: Host: 192.168.1.221
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: Content-Length: 53
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: Content-Type: application/json
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: 
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: { "command": "ha-heartbeat", "service": [ "dhcp4" ] }
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: INFO  COMMAND_RECEIVED Received command 'ha-heartbeat'
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: INFO  CTRL_AGENT_COMMAND_RECEIVED command ha-heartbeat received from remote address 192.168.1.220
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: DEBUG CTRL_AGENT_COMMAND_FORWARD_BEGIN begin forwarding command ha-heartbeat to service dhcp4
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: DEBUG CTRL_AGENT_COMMAND_FORWARD_FAILED failed forwarding command ha-heartbeat: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: DEBUG HTTP_SERVER_RESPONSE_SEND sending HTTP response HTTP/1.1 200 OK to 192.168.1.220
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: DEBUG HTTP_SERVER_RESPONSE_SEND_DETAILS detailed information about response sent to 192.168.1.220:
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: HTTP/1.1 200 OK
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: Content-Length: 140
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: Content-Type: application/json
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: Date: Tue, 10 Dec 2024 09:34:49 GMT
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: 
Dez 10 10:34:49 debian2 kea-ctrl-agent[427]: [ { "result": 1, "text": "unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline" } ]
Dez 10 10:34:51 debian2 kea-dhcp4[432]: 2024-12-10 10:34:51.879 WARN  [kea-dhcp4.ha-hooks/432.140326744490496] HA_HEARTBEAT_FAILED heartbeat to server1_raspi4b (http://192.168.1.220:8000/) failed: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline, error code 1
Dez 10 10:34:51 debian2 kea-dhcp4[432]: 2024-12-10 10:34:51.880 WARN  [kea-dhcp4.ha-hooks/432.140326744490496] HA_COMMUNICATION_INTERRUPTED communication with server1_raspi4b is interrupted
Dez 10 10:34:51 debian2 kea-dhcp4[432]: 2024-12-10 10:34:51.880 INFO  [kea-dhcp4.ha-hooks/432.140326744490496] HA_STATE_TRANSITION server transitions from WAITING to PARTNER-DOWN state, partner state is UNDEFINED
Dez 10 10:34:51 debian2 kea-dhcp4[432]: 2024-12-10 10:34:51.880 INFO  [kea-dhcp4.ha-hooks/432.140326744490496] HA_LEASE_UPDATES_DISABLED lease updates will not be sent to the partner while in PARTNER-DOWN state
Dez 10 10:34:51 debian2 kea-dhcp4[432]: 2024-12-10 10:34:51.880 INFO  [kea-dhcp4.ha-hooks/432.140326744490496] HA_LOCAL_DHCP_ENABLE local DHCP service is enabled while the server2_odroid is in the PARTNER-DOWN state
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: DEBUG HTTP_DATA_RECEIVED received 145 bytes from 192.168.1.220
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED received HTTP request from 192.168.1.220
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED_DETAILS detailed information about well-formed request received from 192.168.1.220:
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: POST / HTTP/1.1
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: Host: 192.168.1.221
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: Content-Length: 53
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: Content-Type: application/json
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: 
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: { "command": "ha-heartbeat", "service": [ "dhcp4" ] }
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: INFO  COMMAND_RECEIVED Received command 'ha-heartbeat'
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: INFO  CTRL_AGENT_COMMAND_RECEIVED command ha-heartbeat received from remote address 192.168.1.220
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: DEBUG CTRL_AGENT_COMMAND_FORWARD_BEGIN begin forwarding command ha-heartbeat to service dhcp4
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: DEBUG CTRL_AGENT_COMMAND_FORWARD_FAILED failed forwarding command ha-heartbeat: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: DEBUG HTTP_SERVER_RESPONSE_SEND sending HTTP response HTTP/1.1 200 OK to 192.168.1.220
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: DEBUG HTTP_SERVER_RESPONSE_SEND_DETAILS detailed information about response sent to 192.168.1.220:
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: HTTP/1.1 200 OK
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: Content-Length: 140
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: Content-Type: application/json
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: Date: Tue, 10 Dec 2024 09:34:59 GMT
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: 
Dez 10 10:34:59 debian2 kea-ctrl-agent[427]: [ { "result": 1, "text": "unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline" } ]
Dez 10 10:35:01 debian2 kea-dhcp4[432]: 2024-12-10 10:35:01.895 WARN  [kea-dhcp4.ha-hooks/432.140326744490496] HA_HEARTBEAT_FAILED heartbeat to server1_raspi4b (http://192.168.1.220:8000/) failed: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline, error code 1
Dez 10 10:35:01 debian2 kea-dhcp4[432]: 2024-12-10 10:35:01.895 WARN  [kea-dhcp4.ha-hooks/432.140326744490496] HA_COMMUNICATION_INTERRUPTED communication with server1_raspi4b is interrupted
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: DEBUG HTTP_DATA_RECEIVED received 145 bytes from 192.168.1.220
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED received HTTP request from 192.168.1.220
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED_DETAILS detailed information about well-formed request received from 192.168.1.220:
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: POST / HTTP/1.1
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: Host: 192.168.1.221
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: Content-Length: 53
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: Content-Type: application/json
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: 
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: { "command": "ha-heartbeat", "service": [ "dhcp4" ] }
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: INFO  COMMAND_RECEIVED Received command 'ha-heartbeat'
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: INFO  CTRL_AGENT_COMMAND_RECEIVED command ha-heartbeat received from remote address 192.168.1.220
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: DEBUG CTRL_AGENT_COMMAND_FORWARD_BEGIN begin forwarding command ha-heartbeat to service dhcp4
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: DEBUG CTRL_AGENT_COMMAND_FORWARD_FAILED failed forwarding command ha-heartbeat: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: DEBUG HTTP_SERVER_RESPONSE_SEND sending HTTP response HTTP/1.1 200 OK to 192.168.1.220
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: DEBUG HTTP_SERVER_RESPONSE_SEND_DETAILS detailed information about response sent to 192.168.1.220:
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: HTTP/1.1 200 OK
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: Content-Length: 140
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: Content-Type: application/json
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: Date: Tue, 10 Dec 2024 09:35:08 GMT
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: 
Dez 10 10:35:08 debian2 kea-ctrl-agent[427]: [ { "result": 1, "text": "unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline" } ]
Dez 10 10:35:11 debian2 kea-dhcp4[432]: 2024-12-10 10:35:11.911 WARN  [kea-dhcp4.ha-hooks/432.140326744490496] HA_HEARTBEAT_FAILED heartbeat to server1_raspi4b (http://192.168.1.220:8000/) failed: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline, error code 1
Dez 10 10:35:11 debian2 kea-dhcp4[432]: 2024-12-10 10:35:11.911 WARN  [kea-dhcp4.ha-hooks/432.140326744490496] HA_COMMUNICATION_INTERRUPTED communication with server1_raspi4b is interrupted
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: DEBUG HTTP_DATA_RECEIVED received 145 bytes from 192.168.1.220
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED received HTTP request from 192.168.1.220
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED_DETAILS detailed information about well-formed request received from 192.168.1.220:
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: POST / HTTP/1.1
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: Host: 192.168.1.221
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: Content-Length: 53
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: Content-Type: application/json
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: 
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: { "command": "ha-heartbeat", "service": [ "dhcp4" ] }
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: INFO  COMMAND_RECEIVED Received command 'ha-heartbeat'
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: INFO  CTRL_AGENT_COMMAND_RECEIVED command ha-heartbeat received from remote address 192.168.1.220
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: DEBUG CTRL_AGENT_COMMAND_FORWARD_BEGIN begin forwarding command ha-heartbeat to service dhcp4
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: DEBUG CTRL_AGENT_COMMAND_FORWARD_FAILED failed forwarding command ha-heartbeat: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: DEBUG HTTP_SERVER_RESPONSE_SEND sending HTTP response HTTP/1.1 200 OK to 192.168.1.220
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: DEBUG HTTP_SERVER_RESPONSE_SEND_DETAILS detailed information about response sent to 192.168.1.220:
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: HTTP/1.1 200 OK
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: Content-Length: 140
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: Content-Type: application/json
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: Date: Tue, 10 Dec 2024 09:35:19 GMT
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: 
Dez 10 10:35:19 debian2 kea-ctrl-agent[427]: [ { "result": 1, "text": "unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline" } ]
Dez 10 10:35:21 debian2 kea-dhcp4[432]: 2024-12-10 10:35:21.969 WARN  [kea-dhcp4.ha-hooks/432.140326744490496] HA_HEARTBEAT_FAILED heartbeat to server1_raspi4b (http://192.168.1.220:8000/) failed: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline, error code 1
Dez 10 10:35:21 debian2 kea-dhcp4[432]: 2024-12-10 10:35:21.969 WARN  [kea-dhcp4.ha-hooks/432.140326744490496] HA_COMMUNICATION_INTERRUPTED communication with server1_raspi4b is interrupted
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: DEBUG HTTP_DATA_RECEIVED received 145 bytes from 192.168.1.220
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED received HTTP request from 192.168.1.220
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED_DETAILS detailed information about well-formed request received from 192.168.1.220:
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: POST / HTTP/1.1
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: Host: 192.168.1.221
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: Content-Length: 53
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: Content-Type: application/json
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: 
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: { "command": "ha-heartbeat", "service": [ "dhcp4" ] }
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: INFO  COMMAND_RECEIVED Received command 'ha-heartbeat'
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: INFO  CTRL_AGENT_COMMAND_RECEIVED command ha-heartbeat received from remote address 192.168.1.220
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: DEBUG CTRL_AGENT_COMMAND_FORWARD_BEGIN begin forwarding command ha-heartbeat to service dhcp4
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: DEBUG CTRL_AGENT_COMMAND_FORWARD_FAILED failed forwarding command ha-heartbeat: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: DEBUG HTTP_SERVER_RESPONSE_SEND sending HTTP response HTTP/1.1 200 OK to 192.168.1.220
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: DEBUG HTTP_SERVER_RESPONSE_SEND_DETAILS detailed information about response sent to 192.168.1.220:
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: HTTP/1.1 200 OK
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: Content-Length: 140
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: Content-Type: application/json
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: Date: Tue, 10 Dec 2024 09:35:29 GMT
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: 
Dez 10 10:35:29 debian2 kea-ctrl-agent[427]: [ { "result": 1, "text": "unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline" } ]
Dez 10 10:35:32 debian2 kea-dhcp4[432]: 2024-12-10 10:35:32.000 WARN  [kea-dhcp4.ha-hooks/432.140326744490496] HA_HEARTBEAT_FAILED heartbeat to server1_raspi4b (http://192.168.1.220:8000/) failed: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline, error code 1
Dez 10 10:35:32 debian2 kea-dhcp4[432]: 2024-12-10 10:35:32.000 WARN  [kea-dhcp4.ha-hooks/432.140326744490496] HA_COMMUNICATION_INTERRUPTED communication with server1_raspi4b is interrupted
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: DEBUG HTTP_DATA_RECEIVED received 145 bytes from 192.168.1.220
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED received HTTP request from 192.168.1.220
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: DEBUG HTTP_CLIENT_REQUEST_RECEIVED_DETAILS detailed information about well-formed request received from 192.168.1.220:
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: POST / HTTP/1.1
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: Host: 192.168.1.221
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: Content-Length: 53
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: Content-Type: application/json
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: 
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: { "command": "ha-heartbeat", "service": [ "dhcp4" ] }
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: INFO  COMMAND_RECEIVED Received command 'ha-heartbeat'
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: INFO  CTRL_AGENT_COMMAND_RECEIVED command ha-heartbeat received from remote address 192.168.1.220
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: DEBUG CTRL_AGENT_COMMAND_FORWARD_BEGIN begin forwarding command ha-heartbeat to service dhcp4
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: DEBUG CTRL_AGENT_COMMAND_FORWARD_FAILED failed forwarding command ha-heartbeat: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: DEBUG HTTP_SERVER_RESPONSE_SEND sending HTTP response HTTP/1.1 200 OK to 192.168.1.220
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: DEBUG HTTP_SERVER_RESPONSE_SEND_DETAILS detailed information about response sent to 192.168.1.220:
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: HTTP/1.1 200 OK
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: Content-Length: 140
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: Content-Type: application/json
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: Date: Tue, 10 Dec 2024 09:35:39 GMT
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: 
Dez 10 10:35:39 debian2 kea-ctrl-agent[427]: [ { "result": 1, "text": "unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline" } ]
Dez 10 10:35:42 debian2 kea-dhcp4[432]: 2024-12-10 10:35:42.021 WARN  [kea-dhcp4.ha-hooks/432.140326744490496] HA_HEARTBEAT_FAILED heartbeat to server1_raspi4b (http://192.168.1.220:8000/) failed: unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline, error code 1
Dez 10 10:35:42 debian2 kea-dhcp4[432]: 2024-12-10 10:35:42.021 WARN  [kea-dhcp4.ha-hooks/432.140326744490496] HA_COMMUNICATION_INTERRUPTED communication with server1_raspi4b is interrupted
...
Here is the configuration of the kea-dhcp4.conf of both servers
kea-dhcp4.conf Server1
kea-dhcp4.conf Server2

Code: Select all

root@debian1:~# /etc/init.d/kea-dhcp4-server status
● kea-dhcp4-server.service - Kea IPv4 DHCP daemon
     Loaded: loaded (/etc/systemd/system/kea-dhcp4-server.service; enabled; preset: enabled)
     Active: active (running) since Tue 2024-12-10 10:34:37 CET; 56min ago
       Docs: man:kea-dhcp4(8)
    Process: 442 ExecStartPre=/bin/mkdir -p /var/run/kea (code=exited, status=0/SUCCESS)
   Main PID: 445 (kea-dhcp4)
      Tasks: 5 (limit: 2297)
     Memory: 15.3M
        CPU: 359ms
     CGroup: /system.slice/kea-dhcp4-server.service
             └─445 /usr/sbin/kea-dhcp4 -c /etc/kea/kea-dhcp4.conf

root@debian2:~# /etc/init.d/kea-dhcp4-server status
● kea-dhcp4-server.service - Kea IPv4 DHCP daemon
     Loaded: loaded (/etc/systemd/system/kea-dhcp4-server.service; enabled; preset: enabled)
     Active: active (running) since Tue 2024-12-10 10:34:40 CET; 57min ago
       Docs: man:kea-dhcp4(8)
    Process: 428 ExecStartPre=/bin/mkdir -p /var/run/kea (code=exited, status=0/SUCCESS)
   Main PID: 432 (kea-dhcp4)
      Tasks: 5 (limit: 1097)
     Memory: 15.6M
        CPU: 357ms
     CGroup: /system.slice/kea-dhcp4-server.service
             └─432 /usr/sbin/kea-dhcp4 -c /etc/kea/kea-dhcp4.conf
Last edited by weiss on 2024-12-14 14:23, edited 1 time in total.
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Aki
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Re: [Software] Kea HA does not work "unable to forward command to the dhcp4 service: ...The server is likely to be offl

#2 Post by Aki »

Hello,

According to this error message:

Code: Select all

Dez 10 10:34:37 debian1 kea-ctrl-agent[441]: DEBUG DCTL_CONFIG_START parsing new configuration: { "control-sockets": { "d2": { "socket-name": "/run/kea/kea-ddns-ctrl-socket", "socket-type": "unix" }, "dhcp4": { "socket-name": "/run/kea/kea4-ctrl-socket", "socket-type": "unix" } }, "hooks-libraries": [  ], "http-host": "192.168.1.220", "http-port": 8000, "loggers": [ { "debuglevel": 99, "name": "kea-ctrl-agent", "output_options": [ { "output": "stderr", "pattern": "%-5p %m\n" } ], "severity": "DEBUG" } ] }
[..]
Dez 10 10:34:50 debian1 kea-ctrl-agent[441]: [ { "result": 1, "text": "unable to forward command to the dhcp4 service: No such file or directory. The server is likely to be offline" } ]
it seems that the kea-ctrl-agent cannot communicate with the kea server using a unix socket [1] (i.e. /run/kea/kea4-ctrl-socket).

This unix socket (filename) is not found by the kea-ctrl-agent, so the error message "No such file or directory".

I'm not an kea expert, but the configuration for this socket seems to be missing in the server configurations you sent. (see [2]):
[..]
The management API allows the issuing of specific management commands, such as statistics retrieval, reconfiguration, or shutdown. For more details, see Management API. Currently, the only supported communication channel type is the UNIX stream socket. By default there are no sockets open; to instruct Kea to open a socket, the following entry in the configuration file can be used:

Code: Select all

"Dhcp4": {
    "control-socket": {
        "socket-type": "unix",
        "socket-name": "/path/to/the/unix/socket"
    },

    "subnet4": [
        ...
    ],
    ...
}
[..]
Hope this helps. Please let me know.

[1] https://sources.debian.org/src/isc-kea/2.4.1-3/src/bin/agent/ca_command_mgr.cc/?hl=246#L227
[2] Kea Administrator Reference Manual - 8.9 Management API for the DHCPv4 Server
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weiss
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Re: [Solved] [Software] Kea HA does not work "unable to forward command to the dhcp4 service: ...The server is .. offli

#3 Post by weiss »

Hello Aki,

yay 🙃️, a thousand thanks for your tip 😇. As you wrote, the problem was exactly due to the missing entry for the socket in kea-dhcp4.conf 👍. Now I also realize that this is necessary for communication - I had missed it (several times) in the documentation.
So I only needed to copy the section
"control-sockets": {
"dhcp4": {
"socket-type": "unix",
"socket-name": "/run/kea/kea4-ctrl-socket"
},
from the
kea-ctrl-agent.conf into the kea-dhcp4.conf .
After that, the Kea HA function worked as expected (extensively tested and checked in the debug files and with tcpdump).

Thanks!

Tip for others: do not forget to deactivate the debug mode
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Aki
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Re: [Software] [Solved] Kea HA does not work "unable to forward command to the dhcp4 service: ...The server

#4 Post by Aki »

Hello,

I'm glad you sorted it out. :)

Happy Debian ! :)

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note: moved to "System and Network configuration" sub-forum.

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