In CentOS 7 or Fedora or RHEL 7 firewall to manage the firewalld
Add to
firewall-cmd --zone = public --add-port = 80 / tcp --permanent (--permanent permanent, this does not restart the failed parameter)
firewall-cmd --zone=public --add-port=1000-2000/tcp --permanent Reload
firewall-cmd --reloadView
firewall-cmd --zone=public --query-port=80/tcpdelete
firewall-cmd --zone=public --remove-port=80/tcp --permanent
Today, I rented a few new cloud servers, configured the environment, and first set up a wave of Zookeeper clusters. Like the previous machine, turn off the firewall service iptables stop first, and su...
The following error message: With CentOS 6 has been used to it, I did not getting it. ": Unit iptables.service failed to load:. No such file or directory Failed to restart iptables.service" ...
Scenes： Service iptables start / stop will cause an error when executing start, close or open firewall command in CentOS7 Failed to start iptables.service: Uni...
When the firewall is closed, it appears: Solution: yum install iptables-services In fact, after centos7 is based on iptable systemctl stop firewalld...
First, the problem: 1, there is no problem when CentOS7 install mysql, install the following commands: yum -y install mysql mysql-server mysql-devel 2, when you start my...
phenomenon: Prompt to start MySQL database in centOS7: It is clearly installed, why does the prompt not exist? the reason: In CentOS7, mysql is no longer supported. Even if you have already installed ...
There are many errors involved. A ring sets a ring. First install problem Will report an error: Failed to start mariadb.service: Unit not found. Then use the command systemctl start mariadb, the promp...
Article catalog Problem Description Reason for problems Other orders Problem Description I want to open the port under CentOS to start the firewall when starting the firewall. The problems encountered...
Download installation package Start service At this time, the wrong failed to start mariadb.service: Unit Not Found .; When YUM is installed, it will verify that the package is officially relea...