[SOLVED] Set route for private network on vm startup

[exii88]

Hello,

i want a setup like the attached picture.



The most of the setup works.

When i connect from any application server to the database server (this server is only private available) the application server has not the private ip but rather the public ip.
I get it working when i set an route for the private network subnet go over the second network interface (private network interface).
My problem is that i try to create an persistent route for the server. It doesn't works.

The interface config for one of the vms:

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
        address 138.***.***.***
        netmask 255.255.255.255
        post-up ip route add 138.***.***.*** dev eth0
        post-up ip route add default via 138.***.***.***
        pre-down ip route del default via 138.***.***.***
        pre-down ip route del 138.***.***.*** dev eth0

iface eth0 inet6 static

auto eth1
iface eth1 inet static
        address 192.168.99.101
        netmask 255.255.255.255
        post-up ip route add 192.168.99.1 dev eth1
        post-up ip route add default via 192.168.99.1
        pre-down ip route del default via 192.168.99.1
        pre-down ip route del 192.168.99.1 dev eth1
        up route add -net 192.168.99.0 netmask 255.255.255.0 gw 192.168.99.1 dev eth1

When i manually execute the last line it works. But not automatically on startup.

Thanks for help

Best regards,
exii88

 

[wbumiller]

Do you see an error if you bring the interface down and up from the console?

# ifdown eth1
# ifup eth1

Maybe `post-up` would be better timed for this? After all, the other routes seem to work and they're also in post-up lines.

(And why is your network bigger than the internet )

 

[exii88]

If found the problem...

I had the wrong prefix for the ip address in proxmox.

I set i like 192.168.99.101/32. But i must set it to 192.168.99.101/24 and then the vm create the right route by default.

I'm so stupid But thanks for the help wbumiller.

 

[Mustafa YILDIZ]

Hi,
I bought a Server from Hetzner recently. I added 2 Failover IPs to it. I'm testing on it everything now. I want to add some VM over Failover IPs. I have only one NIC. How can i do it?