Static IP address on CentOS 7

centos7ipstatic-ip

I just installed CentOS minimal and now I am struggling to give my machine a fixed IP address. This is my ifcfg-ens32 file:

DEVICE="ens32"
TYPE="Ethernet"
BOOTPROTO=static
IP_ADDR="192.168.0.243"
NETMASK="255.255.252.0"
NM_CONTROLLED="no"
ONBOOT="yes"
NAME="System ens32"
GATEWAY="192.168.0.1"
HWADDR="00:0C:29:7B:28:24"

when I systemctl restart network.service, I do get to see it enables the interface, but when I run ip a, that interface does not have an IP address.

What am I doing wrong?

Best Answer

Just write IPADDR instead of IP_ADDR in your config file

Related Solutions

Difference Between IP Address 0.0.0.0 and 127.0.0.1

The only thing is that you're not saying "all addresses should have access" -- that's done in your firewall(s) and/or the server software and/or other security layers like tcpwrappers.

0.0.0.0, in this context, means "all IP addresses on the local machine" (in fact probably, "all IPv4 addresses on the local machine"). So, if your webserver machine has two IP addresses, 192.168.1.1 and 10.1.2.1, and you allow a webserver daemon like apache to listen on 0.0.0.0, it will be reachable at both of those IP addresses. But only to what can contact those IP addresses and the web port(s).

Note that, in a different context (routing) 0.0.0.0 usually means the default route (the route to "the rest of" the internet, aside from routes in your local network etc.).

Centos – Setting static IP on CentOS without system-config-network

Edit the /etc/sysconfig/network-scripts/ifcfg-eth[num] file like this:

DEVICE=eth0
BOOTPROTO=none
HWADDR=<your MAC>
ONBOOT=yes
TYPE=Ethernet
NETMASK=255.255.255.0
IPADDR=<ip>
GATEWAY=<gateway>

When you are done run /etc/init.d/network restart.

Best Answer

Related Solutions

Difference Between IP Address 0.0.0.0 and 127.0.0.1

Centos – Setting static IP on CentOS without system-config-network

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