incmplt SERV-OPS サバ缶どん is a user on mstdn.serv-ops.com. You can follow them or interact with them if you have an account anywhere in the fediverse.
ついでにサポート終了が早まったCentOS 8をCentOS Stream 8に切り替え。
https://serv-ops.com/blog/2020/12/22/centos-8-to-centos-stream/