Tag: AWS EC2

  • Set Permanant hostname on AWS EC2 CentOS 7 server

    On AWS EC2 when you boot, hostname set something like ip-172-31-41-172.eu-central-1.compute.internal

    To chaneg this, run

    hostnamectl set-hostname --static HOSTNAME_HERE

    Example

    hostnamectl set-hostname --static server1.serverok.in

    To disable change of hostname, run

    echo "preserve_hostname: true" > /etc/cloud/cloud.cfg.d/99_hostname.cfg

    Now reboot your server with

    reboot

    Back to hostname