Shulou(Shulou.com)06/03 Report--

I. failure phenomenon

1. Start the firewall

# systemctl start firewalld

Failed to start firewalld.service: Unit is masked.

(failed to start the firewall: the firewall is locked)

II. Solutions

1. Unlock the firewall

# systemctl unmask firewalld

Output the following results:

Removed symlink / etc/systemd/system/firewalld.service.

(remove symbolic links)

2. Start firewalld again:

# systemctl start firewalld

3. Check the firewalld status:

# systemctl status firewalld

Output the following results:

● firewalld.service-firewalld-dynamic firewall daemon

Loaded: loaded (/ usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)

Active: active (running) since four 2019-06-06 14:59:42 CST; 6s ago

Docs: man:firewalld (1)

Main PID: 31046 (firewalld)

Tasks: 2

Memory: 25.9M

CGroup: / system.slice/firewalld.service

└─ 31046 / usr/bin/python-Es / usr/sbin/firewalld-nofork-nopid

June 06 14:59:41 node-3 systemd [1]: Starting firewalld-dynamic firewall daemon...

14:59:42 node-3 systemd [1]: Started firewalld-dynamic firewall daemon.

4Active: active (running) indicates that the firewall has been started.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.