kea¶
Ubuntu¶
API¶
$ sudo apt install kea-ctrl-agent
$ dpkg -L kea-common | grep hooks
/usr/lib/x86_64-linux-gnu/kea/hooks
/usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_ha.so
/usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_lease_cmds.so
/usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_mysql_cb.so
/usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_stat_cmds.so
/usr/lib/x86_64-linux-gnu/libkea-hooks.so.7.0.3
/usr/lib/x86_64-linux-gnu/libkea-hooks.so.7
$ cat /etc/kea/kea-dhcp4.conf
{
"Dhcp4": {
...
"hooks-libraries": [
{
"library": "/usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_lease_cmds.so",
"parameters": { }
}
]
}
}
$ sudo systemctl restart kea-dhcp4-server
example: "command": "lease4-get-all"¶
$ curl -s -H"Content-Type:application/json" http://localhost:8000 -d '{"command": "lease4-get-all","service":["dhcp4"]}' | jq .
[
{
"arguments": {
"leases": [
{
"client-id": "01:34:97:f6:7c:ce:96",
"cltt": 1617352399,
"fqdn-fwd": true,
"fqdn-rev": true,
"hostname": "android-63d1a27d8db517c8",
"hw-address": "34:97:f6:7c:ce:96",
"ip-address": "192.168.122.129",
"state": 0,
"subnet-id": 1,
"valid-lft": 3600
},
{
...
}
]
},
"result": 0,
"text": "11 IPv4 lease(s) found."
}
]
HA logs¶
configuration diff
{
"Dhcp4": {
...
"hooks-libraries": [
{
"library": "/usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_lease_cmds.so",
"parameters": { }
},
{
"library": "/usr/lib/x86_64-linux-gnu/kea/hooks/libdhcp_ha.so",
"parameters": {
"high-availability": [ {
"this-server-name": "noriko",
"mode": "hot-standby",
"heartbeat-delay": 10000,
"max-response-delay": 10000,
"max-ack-delay": 5000,
"max-unacked-clients": 5,
"peers": [
{
"name": "noriko",
"url": "http://192.168.122.35:8000/",
"role": "primary",
"auto-failover": true
}, {
"name": "tokiko",
"url": "http://192.168.122.36:8000/",
"role": "standby",
"auto-failover": true
} ]
} ]
}
}
...
HA log
# grep "ha-hook" /var/log/kea/kea-dhcp4.log
2021-04-05 18:58:15.398 INFO [kea-dhcp4.ha-hooks/4020] HA_CONFIGURATION_SUCCESSFUL HA hook library has been successfully configured
2021-04-05 18:58:15.398 INFO [kea-dhcp4.ha-hooks/4020] HA_INIT_OK loading High Availability hooks library successful
2021-04-05 18:58:15.409 INFO [kea-dhcp4.ha-hooks/4020] HA_LOCAL_DHCP_DISABLE local DHCP service is disabled while the tokiko is in the WAITING state
2021-04-05 18:58:15.409 INFO [kea-dhcp4.ha-hooks/4020] HA_SERVICE_STARTED started high availability service in hot-standby mode as standby server
2021-04-05 18:58:26.834 INFO [kea-dhcp4.ha-hooks/4020] HA_STATE_TRANSITION server transitions from WAITING to SYNCING state, partner state is PARTNER-DOWN
2021-04-05 18:58:26.834 INFO [kea-dhcp4.ha-hooks/4020] HA_LEASE_UPDATES_DISABLED lease updates will not be sent to the partner while in SYNCING state
2021-04-05 18:58:26.834 INFO [kea-dhcp4.ha-hooks/4020] HA_SYNC_START starting lease database synchronization with noriko
2021-04-05 18:58:26.837 INFO [kea-dhcp4.ha-hooks/4020] HA_LEASES_SYNC_LEASE_PAGE_RECEIVED received 12 leases from noriko
2021-04-05 18:58:26.838 INFO [kea-dhcp4.ha-hooks/4020] HA_SYNC_SUCCESSFUL lease database synchronization with noriko completed successfully in 4.013 ms
2021-04-05 18:58:26.838 INFO [kea-dhcp4.ha-hooks/4020] HA_STATE_TRANSITION server transitions from SYNCING to READY state, partner state is PARTNER-DOWN
2021-04-05 18:58:26.839 INFO [kea-dhcp4.ha-hooks/4020] HA_LEASE_UPDATES_DISABLED lease updates will not be sent to the partner while in READY state
2021-04-05 18:58:36.852 INFO [kea-dhcp4.ha-hooks/4020] HA_STATE_TRANSITION server transitions from READY to HOT-STANDBY state, partner state is HOT-STANDBY
2021-04-05 18:58:36.852 INFO [kea-dhcp4.ha-hooks/4020] HA_LEASE_UPDATES_ENABLED lease updates will be sent to the partner while in HOT-STANDBY state
2021-04-05 18:58:36.852 INFO [kea-dhcp4.ha-hooks/4020] HA_LOCAL_DHCP_ENABLE local DHCP service is enabled while the tokiko is in the HOT-STANDBY state
API check ha-heartbeat
$ curl -s -H "Content-Type:application/json" http://192.168.122.35:8000 -d '{"command": "ha-heartbeat","service": ["dhcp4"]}' | jq
[
{
"arguments": {
"date-time": "Mon, 05 Apr 2021 10:04:06 GMT",
"state": "hot-standby"
},
"result": 0,
"text": "HA peer status returned."
}
]
$ curl -s -H "Content-Type:application/json" http://192.168.122.36:8000 -d '{"command": "ha-heartbeat","service": ["dhcp4"]}' | jq
[
{
"arguments": {
"date-time": "Mon, 05 Apr 2021 10:04:11 GMT",
"state": "hot-standby"
},
"result": 0,
"text": "HA peer status returned."
}
]
FreeBSD¶
# pkg install kea
Updating FreeBSD repository catalogue...
Fetching meta.txz: 100% 916 B 0.9kB/s 00:01
Fetching packagesite.txz: 100% 6 MiB 6.2MB/s 00:01
Processing entries: 100%
FreeBSD repository update completed. 30622 packages processed.
All repositories are up to date.
The following 3 package(s) will be affected (of 0 checked):
New packages to be INSTALLED:
boost-libs: 1.72.0_2
kea: 1.8.0_1
log4cplus: 1.1.2_3
Number of packages to be installed: 3
The process will require 225 MiB more space.
19 MiB to be downloaded.
Proceed with this action? [y/N]: y
[1/3] Fetching kea-1.8.0_1.txz: 100% 6 MiB 6.2MB/s 00:01
[2/3] Fetching log4cplus-1.1.2_3.txz: 100% 331 KiB 339.2kB/s 00:01
[3/3] Fetching boost-libs-1.72.0_2.txz: 100% 13 MiB 13.1MB/s 00:01
Checking integrity... done (0 conflicting)
[1/3] Installing log4cplus-1.1.2_3...
[1/3] Extracting log4cplus-1.1.2_3: 100%
[2/3] Installing boost-libs-1.72.0_2...
[2/3] Extracting boost-libs-1.72.0_2: 100%
[3/3] Installing kea-1.8.0_1...
[3/3] Extracting kea-1.8.0_1: 100%
=====
Message from boost-libs-1.72.0_2:
--
You have built the Boost library with thread support.
Don't forget to add -pthread to your linker options when
linking your code.
最終更新日: 2021-05-17 02:51:56