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Showing posts with the label centos7

RHEL7 / CentOS7 network interface going down once per hour

There's really bizarre bug in RHEL7 / CentOS7. Once per hour NetworkManager will remove IP addresses from ethernet interface after hitting some bug and triggering "link loss" action. Interface may come back by itself or may not. It does come back when you login as root on console as login triggers some repair action part via systemd...

RHEL7 / CentOS7 with sshd on ports 22 and 443

Short version: Not as simple as you thought.