OVH Vps failover IP
So I wanted to add the failover ip to my ovh vps running ubuntu 16.04 LTS and it didn’t work using the method on ovh’s guide. (http://guides.ovh.net/AjouterAliasIp)
After some googling, I found a guide, in Slovak(https://jan.fecik.sk/blog/ovh-com-vps-failover-ip-vps-s-viac-ip.html ), so I’m going to put the most important steps to add your failover ip.
Note: change the configuration below accordingly
Given situation:
VPS ip: 198.51.100.7
Failover ip: 203.0.113.81
1. Find your default gateway by entering the following
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/sbin/ip route | awk '/default/ { print $3 }' |
Eg. 198.51.100.1
2. Create a new subinterface
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nano /etc/network/interfaces.d/ens3-1.cfg |
Add folowing configuration:
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auto ens3:1 allow-hotplug ens3:1 iface ens3:1 inet static address 203.0.113.81 netmask 255.255.255.255 broadcast 203.0.113.81 post-up /sbin/ip route replace default via 198.51.100.1 dev ens3 src 203.0.113.81 |
3. Reboot your vps or restart interface
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ifdown ens3 && ifup ens3 && ifup ens3:1 |
4. Test it
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absolutelynotroot@vpsxxxx:~# ping google.com -I 203.0.113.81 PING google.com (216.58.213.174) from 203.0.113.81 : 56(84) bytes of data. 64 bytes from par21s04-in-f14.1e100.net (216.58.213.174): icmp_seq=1 ttl=54 time=5.25 ms 64 bytes from par21s04-in-f14.1e100.net (216.58.213.174): icmp_seq=2 ttl=54 time=5.15 ms ^C --- google.com ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1001ms rtt min/avg/max/mdev = 5.158/5.205/5.252/0.047 ms |
Et voila, have fun.