Change hostname and IP address of Linux server without rebooting server

You can change option in third line in /etc/hosts file on Linux server without rebooting; /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.0.1 server.seimaxim.com seimaxim You can change all of the following options in /etc/sysconfig/network without reboot. /etc/sysconfig/network NETWORKING=yes HOSTNAME=server.seimaxim.com GATEWAY=192.168.0.1 Similarly options in /etc/sysconfig/network-scripts/ifcfg-eth0 can also be changed. /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 ONBOOT=yes BOOTPROTO=static IPADDR=192.168.0.1 NETMASK=255.255.255.0 Hostname of server can be changed with; hostname server.seimaxim.com Restart network with; systemctl restart network

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