what is modifying etc/sysconfig/network?

[curlingcanteen]

after reboot my routing scheme breaks:

# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
172.16.0.110    172.16.0.109    255.255.255.255 UGH   0      0        0 venet0
10.24.106.0     0.0.0.0         255.255.254.0   U     0      0        0 eth0
0.0.0.0         0.0.0.0         0.0.0.0         U     0      0        0 eth0

becomes:

# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
172.16.0.110    172.16.0.109    255.255.255.255 UGH   0      0        0 venet0
10.24.106.0     0.0.0.0         255.255.254.0   U     0      0        0 eth0
0.0.0.0         0.0.0.0         0.0.0.0         U     0      0        0 [B][COLOR=#b22222]venet0[/COLOR][/B]

centos-6-x86_64-minimal was the template and I enabled venet during creation.
After first boot I added veth for external network access, then created a routing file route-venet0:0 with 172.16.0.110 via 172.16.0.109,
and modified /etc/sysconfig/network to define the default gateway device as follows:

NETWORKING="yes"
GATEWAYDEV="eth0"
NETWORKING_IPV6="yes"
IPV6_DEFAULTDEV="eth0"
HOSTNAME="xxxxxxxx.xxx.xxx.xxx"
NOZEROCONF=yes

After a reboot, the file looks like this:

NETWORKING="yes"
GATEWAYDEV="[B][COLOR=#b22222]venet0[/COLOR][/B]"
NETWORKING_IPV6="yes"
IPV6_DEFAULTDEV="eth0"
HOSTNAME="xxxxxxxx.xxx.xxx.xxx"
NOZEROCONF=yes

Why is this file being re-written during reboot?

 

[dietmar]

Why is this file being re-written during reboot?

That is OpenVZ standard way to configure the network.

 

[curlingcanteen]

Okay thanks. So what is the OpenVZ standard way to add eth0 and allow traffic to use it as the primary gateway device?

 

[dietmar]

https://openvz.org/Virtual_network_device

and

https://openvz.org/Veth