We all know one should test thing before use in the world of programming, but sometimes that is not enough.
When you use systemd, you often encounter the situation where a command runs well in Bash, but fails when you make it a service. I have meet this situation many times on Ubuntu, and moves to CentOS unsurprisingly increases the probility of error.
What I learned today is that, log message always tells you more than what you think. Atfer struggling for a while to understand the concise meassge
systemctl status says, I found there is a lot of information in
Finally, welcome our lead actor,
I want to open the a to LAN,
firewall is already configured:
But I need also set SELinux