Greetings wise community.
I'm implementing a High Availability system using repmgr 5.5.0, Postgresql 17.1 and Linux OEL 9.5. All is working fine.
I need to do the next step and implement two virtual ip (VIP) in each node. Usually the preferred method was replicating the interface scripts in /etc/sysconfig/network-scripts, but today linux recommends using nmcli.
I have been able to create the VIPs, but I can't achieve both of them running simultaneously. Any time I try to run one of them, the other falls down.
I have created the VIP in the following way:
Initially:
[root@oel9base ~]# nmcli conn
NAME UUID TYPE DEVICE
enp0s3 763e2ff9-0a34-4ff5-b215-db1949d8b30d ethernet enp0s3
lo 1cf316e4-409e-4a4d-8086-d9df2a612a69 loopback lo
[root@oel9base ~]# nmcli connection add type ethernet ifname enp0s3 con-name enp0s3:0 ipv4.method manual ipv4.address 192.168.0.200/24 ipv4.gateway 192.168.0.1
Connection 'enp0s3:0' (78526e2b-669b-4e1e-85cb-775cfb0d5630) successfully added.
[root@oel9base ~]# nmcli connection modify enp0s3:0 ipv4.dns "8.8.8.8 8.8.4.4"
[root@oel9base ~]# nmcli connection add type ethernet ifname enp0s3 con-name enp0s3:1 ipv4.method manual ipv4.address 192.168.0.202/24 ipv4.gateway 192.168.0.1
Connection 'enp0s3:1' (53ef8070-7699-4594-b7ef-855551285158) successfully added.
[root@oel9base ~]# nmcli connection modify enp0s3:1 ipv4.dns "8.8.8.8 8.8.4.4"
[root@oel9base ~]# nmcli conn
NAME UUID TYPE DEVICE
enp0s3 763e2ff9-0a34-4ff5-b215-db1949d8b30d ethernet enp0s3
lo 1cf316e4-409e-4a4d-8086-d9df2a612a69 loopback lo
enp0s3:0 78526e2b-669b-4e1e-85cb-775cfb0d5630 ethernet --
enp0s3:1 53ef8070-7699-4594-b7ef-855551285158 ethernet --
Even I have added the addresses to the original connection:
The way I have proceeded is what I've found on the internet, I don't know what I'm missing.
I would appreciate any suggestions
kind regards
Mauricio Fernández
