Integrates virtual-ip with systemctl in RHEL/CentOS 7 about virtual-ip

[darxkies]

The program should run in the background just fine.

Can you post the service file you used? I am interested especially in the ExecStart line.

[nando2301]

Hi, Sure

[root@columba bin]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:21:f6:69:46:a5 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.18/24 brd 192.168.0.255 scope global noprefixroute eth0
       valid_lft forever preferred_lft forever
    inet 192.168.0.185/32 brd 192.168.0.185 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::1213:e177:3d69:310b/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 52:54:00:65:c4:3b brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
       valid_lft forever preferred_lft forever
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000
    link/ether 52:54:00:65:c4:3b brd ff:ff:ff:ff:ff:ff

[root@columba ~]# vim /etc/systemd/system/virtual-ip.service
[Unit]
Description= Virtual/Floating IP Manager

[Service]
Type=forking
ExecStart=/root/bin/virtual-ip -id server1 -bind 192.168.0.18:10000 -peers server1=192.168.0.18:10000,server2=192.168.0.45:10000 -interface eth0 -virtual-ip 192.168.0.185 &
ExecStop=killall virtual-ip
PIDFile=/root/bin/virtual-ip.pid

[Install]
WantedBy=network.target

[root@columba bin]# systemctl daemon-reload
[root@columba bin]# systemctl status virtual-ip
● virtual-ip.service - Virtual/Floating IP Manager
   Loaded: loaded (/etc/systemd/system/virtual-ip.service; disabled; vendor preset: disabled)
   Active: failed (Result: timeout) since Thu 2019-06-06 15:59:35 CDT; 5min ago

Jun 06 15:58:05 columba.multisolutions.local systemd[1]: Starting Virtual/Floating IP Manager...
Jun 06 15:58:05 columba.multisolutions.local virtual-ip[13171]: time="2019-06-06T15:58:05-05:00" level=info msg=Virtual-IP version=0.1.4
Jun 06 15:58:05 columba.multisolutions.local virtual-ip[13171]: time="2019-06-06T15:58:05-05:00" level=info msg=Cluster bind="192.168.0.18:10000" id=server1 peers="server1=192.168.0.18:10000...0.45:10000"
Jun 06 15:58:05 columba.multisolutions.local virtual-ip[13171]: time="2019-06-06T15:58:05-05:00" level=info msg=Network interface=eth0 virtual-ip=192.168.0.185
Jun 06 15:58:05 columba.multisolutions.local virtual-ip[13171]: time="2019-06-06T15:58:05-05:00" level=info msg=Started
Jun 06 15:59:35 columba.multisolutions.local systemd[1]: virtual-ip.service start operation timed out. Terminating.
Jun 06 15:59:35 columba.multisolutions.local systemd[1]: Failed to start Virtual/Floating IP Manager.
Jun 06 15:59:35 columba.multisolutions.local systemd[1]: Unit virtual-ip.service entered failed state.
Jun 06 15:59:35 columba.multisolutions.local systemd[1]: virtual-ip.service failed.
Warning: virtual-ip.service changed on disk. Run 'systemctl daemon-reload' to reload units.
Hint: Some lines were ellipsized, use -l to show in full.
[root@columba bin]# systemctl daemon-reload
[root@columba bin]# systemctl start virtual-ip
Hangs

[darxkies]

You need to remove the & at the end of the command in ExecStart and perhaps the Type line.

[nando2301]

Good!, Yes removing Type and & works, now I changed to this and woks all fine. Thanks for solution and develop this tool.

[Unit]
Description= Virtual/Floating IP Manager
Requires=network-online.target

[Service]
Type=simple
ExecStart=/root/bin/virtual-ip -id server1 -bind 192.168.0.18:10000 -peers server1=192.168.0.18:10000,server2=192.168.0.45:10000 -interface eth0 -virtual-ip 192.168.0.185
ExecStop=/usr/bin/killall virtual-ip
PIDFile=/root/bin/virtual-ip.pid

[nando2301]

This is the result:

[root@columba ~]# systemctl status virtual-ip -l
● virtual-ip.service - Virtual/Floating IP Manager
   Loaded: loaded (/etc/systemd/system/virtual-ip.service; static; vendor preset: disabled)
   Active: active (running) since Mon 2019-06-10 11:39:06 CDT; 9min ago
 Main PID: 17309 (virtual-ip)
    Tasks: 10
   CGroup: /system.slice/virtual-ip.service
           └─17309 /root/bin/virtual-ip -id server1 -bind 192.168.0.18:10000 -peers server1=192.168.0.18:10000,server2=192.168.0.45:10000 -interface eth0 -virtual-ip 192.168.0.185

Jun 10 11:39:06 columba.multisolutions.local systemd[1]: Started Virtual/Floating IP Manager.
Jun 10 11:39:06 columba.multisolutions.local virtual-ip[17309]: time="2019-06-10T11:39:06-05:00" level=info msg=Virtual-IP version=0.1.4
Jun 10 11:39:06 columba.multisolutions.local virtual-ip[17309]: time="2019-06-10T11:39:06-05:00" level=info msg=Cluster bind="192.168.0.18:10000" id=server1 peers="server1=192.168.0.18:10000,server2=192.168.0.45:10000"
Jun 10 11:39:06 columba.multisolutions.local virtual-ip[17309]: time="2019-06-10T11:39:06-05:00" level=info msg=Network interface=eth0 virtual-ip=192.168.0.185
Jun 10 11:39:06 columba.multisolutions.local virtual-ip[17309]: time="2019-06-10T11:39:06-05:00" level=info msg=Started
[root@columba ~]# ping -c 3 192.168.0.185
PING 192.168.0.185 (192.168.0.185) 56(84) bytes of data.
64 bytes from 192.168.0.185: icmp_seq=1 ttl=64 time=0.136 ms
64 bytes from 192.168.0.185: icmp_seq=2 ttl=64 time=0.138 ms
64 bytes from 192.168.0.185: icmp_seq=3 ttl=64 time=0.162 ms

--- 192.168.0.185 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2061ms
rtt min/avg/max/mdev = 0.136/0.145/0.162/0.015 ms

[darxkies]

Very nice. I am glad it worked out for you. Feel free to update the README if you want systemd integration documented.