I have a brand new CentOS 7 server and am just performing the initial setup.
I have started firewalld with
sudo systemctl enable firewalld sudo systemctl start firewalld
both commands appeared to run successfully
Created symlink from /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service to /usr/lib/systemd/system/firewalld.service. Created symlink from /etc/systemd/system/multi-user.target.wants/firewalld.service to /usr/lib/systemd/system/firewalld.service.
and the systemctl status command shows
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled)
Active: active (running) since WHENEVER
however, all morning there have been moments when checking in with systemctl status shows
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
Active: inactive (dead)
I could understand the service having crashed, for example, but can anyone help me debug how it is being both stopped and disabled at arbitrary intervals?