hostname doesn't persist after reboot in CentOS 7 instance
Solution 1:
I found that my CentOS 7 Instance uses Cloud-Init every reboot and it sets to originally given hostname every time I reboot the instance.
I found a solution here:
https://www.ovh.pt/g1928.hostname
Which tells that and to get around must have to deactivate an cloud-init module with: manage_etc_hosts: false in /etc/cloud/cloud.cfg file, and then hostname to whatever you want.
But since my /etc/cloud/cloud.cfg file was different I just deleted:
- set_hostname
- update_hostname
under cloud_init_modules and it worked for me