On 6 July 2017 at 15:41, Scott Robbins <scottr...@gmail.com> wrote: > On Thu, Jul 06, 2017 at 08:17:17AM -0400, Jonathan Billings wrote: >> On Thu, Jul 06, 2017 at 11:17:12AM +0300, Amine Tengilimoglu wrote: >> > i need your helps on setting the virtual ip. I am trying to setup static >> > virtual ip on CenOS7. but I want my VIP to should not open when rebooting. >> >> It looks like you're trying to add the second IP on an aliased >> interface, something that you used to have to do in older releases of >> CentOS. >> >> In C7, you just add multiple IPs to the interface, no need to use >> eth0:1 style names. >> >> In the ifcfg-<device>, you can just put in IPADDR1=1.2.3.4 and >> NETMASK1=255.255.255.0, and PREFIX1=1.2.3.0. >> >> The documentation is in >> /usr/share/doc/initscripts-9.49.37/sysconfig.txt (part of the >> initscripts package), which says: > > There's a clearer explanation, IMHO, with examples, here. > https://community.spiceworks.com/topic/545859-add-secondary-ip-to-one-interface-in-centos-7 > > I don't see mention of it in the RHEL-7 release notes, they just say NM is > better than it was, and perhaps there's an easy way to do it with NM. > > I've left the text that J.Billings kindly included, in below. > > >> >> >> Base items: >> NAME=<friendly name for users to see> >> Most important for PPP. Only used in front ends. >> DEVICE=<name of physical device (except dynamically-allocated PPP >> devices where it is the "logical name")> >> IPADDRn= >> PREFIXn= >> Network prefix. It is used for all configurations except aliases >> and ippp devices. It takes precedence over NETMASK when both >> PREFIX and NETMASK are set. >> NETMASKn= >> Subnet mask; just useful for aliases and ippp devices. For all other >> configurations, use PREFIX instead. >> >> The "n" is expected to be consecutive positive integers starting from 0. >> It can be omitted if there is only one address being configured. >> >> So, you can have IPADDR0, IPADDR1, IPADDR2, etc. >> >> All of these will configure an IP on the device named in the DEVICE >> line. No need to have multiple alias interfaces. >> >> -- >> Jonathan Billings <billi...@negate.org>
Don't even go near an aliased interface on EL7 ... it's the most painful way to handle this and not NM compatible. Here's an article I wrote way back on handling this: https://www.hogarthuk.com/?q=node/6 Note that with NM in use (as should be the case on EL7) it's as simple as: nmcli con mod <conn-name> +ipv4.addr "10.0.0.2/24" https://www.hogarthuk.com/?q=node/8 _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
