cenos7 turn off the firewall security

Then copy a new channel through the terminal xshell:

Execute the following command:

> /var/run/yum.pid

You can solve the problem.

Temporarily turn off the firewall
systemctl stop firewalld
permanently turn off the firewall
systemctl disable firewalld

Temporary closure selinux security
setenforce 0
permanently closed security selinux
sed -i '7 s / enforcing / disabled /' / etc / selinux / config

 

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