Issue Wrong public IP

[Giuseppe]

Hello all,
I have a VPS on OVH with centos 8 and Plesk as panel.

I have a strange issue, after add 4 additional ip, when reboot also if IP on eth0 is correct (is the main uip of server/Plesk), the public ip change on one of additional ip.

OVH say that centos need a configuration for use lalways the same ip for public connection, but I not know how can I set.

In network-script folder I have the main file set as:
[root@server network-scripts]# cat ifcfg-eth0
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=dhcp
DEFROUTE=yes
DEVICE=eth0
DHCLIENT_SET_DEFAULT_ROUTE=yes
HWADDR=fa:16:3e:ff:a4:44
IPADDR6=2001:xxxxxxx
IPV6ADDR=2001:xxxxxx
IPV6INIT=yes
IPV6_AUTOCONF=no
IPV6_DEFAULTGW= Xxxx
IPV6_FORCE_ACCEPT_RA=no
MTU=1500
ONBOOT=yes
STARTMODE=auto
TYPE=Ethernet
USERCTL=no

In dhcp acquire always the same (main ip ).

Are present also in same folder: ifcfg-ens3 ifcfg-eth0 ifcfg-eth0:1 ifcfg-eth0:2 ifcfg-eth0:3 ifcfg-eth0:4 ; in 0:1/2/3/4 are preßent the 4 additional ip; when reboot use random one of this as public ip.

Someone can help me?

Thanks
Giuseppe

 

[Giuseppe]

Any idea?

 

[agaitan]

Hello all,
I have a VPS on OVH with centos 8 and Plesk as panel.

I have a strange issue, after add 4 additional ip, when reboot also if IP on eth0 is correct (is the main uip of server/Plesk), the public ip change on one of additional ip.

OVH say that centos need a configuration for use lalways the same ip for public connection, but I not know how can I set.

In network-script folder I have the main file set as:
[root@server network-scripts]# cat ifcfg-eth0
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=dhcp
DEFROUTE=yes
DEVICE=eth0
DHCLIENT_SET_DEFAULT_ROUTE=yes
HWADDR=fa:16:3e:ff:a4:44
IPADDR6=2001:xxxxxxx
IPV6ADDR=2001:xxxxxx
IPV6INIT=yes
IPV6_AUTOCONF=no
IPV6_DEFAULTGW= Xxxx
IPV6_FORCE_ACCEPT_RA=no
MTU=1500
ONBOOT=yes
STARTMODE=auto
TYPE=Ethernet
USERCTL=no

In dhcp acquire always the same (main ip ).

Are present also in same folder: ifcfg-ens3 ifcfg-eth0 ifcfg-eth0:1 ifcfg-eth0:2 ifcfg-eth0:3 ifcfg-eth0:4 ; in 0:1/2/3/4 are preßent the 4 additional ip; when reboot use random one of this as public ip.

Someone can help me?

Thanks
Giuseppe

got almost same issue, how did you fixed it?

 

[Maarten.]

Instead of using a DHCP IP address, change it to static so it becomes permanent:
BOOTPROTO=static

You do have to set the DNS and default gateway if you set it to static:
DNS1=xx.xx.xx.xx
DNS2=xx.xx.xx.xx
DNS3=xx.xx.xx.xx
GATEWAY=xx.xx.xx.xx
NETMASK=255.255.255.0

You can find the default gateway with this command:
# route -n

The DNS servers can be found in /etc/resolv.conf:
# cat /etc/resolv.conf

Restart the networkservice to make the new configuration active:
# systemctl restart NetworkManager.service