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- How to install yum under centos7
- The method to install yum under centos7 is: 1. Download the yum installation file; 2. Execute the command [rpm -ivh yum-metadata-parser-1.1.4-10.el7.x86_64.rpm] to install yum; 3. Update the repo file.
- CentOS 10474 2020-04-01 10:46:39
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- Unable to boot the original system after installing centos7 under windows
- The solution to the problem that the original system cannot be booted after installing centos7 under windows is: 1. Mount the Windows7 system disk in CentOS7; 2. Execute the command [grub2 -mkconfig -o /boot/grub2/grub.cfg].
- CentOS 4776 2020-04-01 10:36:18
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- Unable to start ssh service under centos7
- The solution to the failure to start the ssh service under centos7 is: 1. Execute the [sshd -t] command to view the specific error message; 2. Execute the command [chmod 711 /var/empty/sshd] to modify the permissions of sshd to 711.
- CentOS 6065 2020-04-01 10:17:12
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- What should I do if users cannot log in under centos7?
- The solution to the problem that users cannot log in under centos7 is: 1. Enter the command mode; 2. Execute the command [/usr/bin/sudo /usr/bin/vi /etc/environment]; 3. Delete the [export PATH] configuration; 4. Restart the system.
- CentOS 7065 2020-04-01 10:07:10
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- Centos7 cannot ping the gateway under the virtual machine
- The solution to the problem that centos7 cannot ping the gateway under the virtual machine is: 1. Execute the command [ifdown ens33] to shut down the network; 2. Execute the command [ifup ens33] to reopen the network; 3. Reload the network card program.
- CentOS 3774 2020-04-01 09:57:33
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- The network cannot be restarted under centos7
- The solution to the problem that the network cannot be restarted under centos7 is: 1. Execute the [ip addr] command to view HWADDR; 2. Open the ifcfg-ensXX configuration file and modify the HWADDR configuration; 3. Restart the network.
- CentOS 4883 2020-04-01 09:45:26
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- What should I do if the network card service cannot be started under centos7?
- The solution to the problem that the network card service cannot be started under centos7 is: 1. Close the NetworkManager management suite; 2. Disable NetworkManager from starting at boot; 3. Execute the command [systemctl start network.service] to restart the network card service.
- CentOS 5334 2020-04-01 09:34:24
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- What to do if port access is denied under centos7
- The solution to the port access denial under centos7 is: 1. Execute the command [systemctl stop firewalld] to close the firewall; 2. Execute the command [systemctl disable firewalld] to prevent the firewall from starting at boot.
- CentOS 6664 2020-04-01 09:24:53
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- How to check if MySQL is installed on CentOS
- How to check whether MySQL is installed on CentOS: 1. Use the yum list installed mysql* command to check; 2. Use the rpm -qa | grep mysql* command to check; 3. Use the whereis mysql command to check.
- CentOS 7656 2020-03-31 18:06:25
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- How to prevent docker from starting at boot
- How to disable docker from starting at boot: use the command systemctl disable docker.service to disable docker from starting at boot; in older versions, the command to disable docker from starting at boot is chkconfig --level 3 docker off.
- CentOS 11997 2020-03-31 17:09:21
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- How to check centos version
- How to check the centos version: 1. Use the lsb_release -a command; 2. Use the uname command, applicable to all Linux; 3. Use the cat /etc/redhat-release command; 4. Use the rpm -q redhat-release command.
- CentOS 3968 2020-03-31 17:00:48
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- What should I do if I cannot use the yum command under centos7?
- The solution to the problem that the yum command cannot be used under centos7 is: 1. Enter the configuration file directory; 2. Open the network card configuration file ifcfg-ens33; 3. Modify the configuration [ONBOOT=yes]; 4. Restart the system.
- CentOS 3247 2020-03-31 15:47:58
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- How to solve the problem of unable to ping the gateway under centos7
- The solution to the failure to ping the gateway under centos7 is: 1. Execute the command [ifdown ens33] to close the network port; 2. Execute the command [ifup ens33] to restart the network port; 3. Reload the network card program.
- CentOS 11500 2020-03-31 15:38:09
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- Unable to ping external network under centos7
- The solution to the problem of being unable to ping the external network under centos7 is: 1. Open the /etc/resolv.conf file; 2. Add dns settings; 3. Execute the command [route add default gw 192.168.11.1] to add a route.
- CentOS 3084 2020-03-31 15:26:24
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- How to configure fixed IP in centos7
- The method for configuring a fixed IP in centos7 is: 1. Open the network card configuration file; 2. Modify the configuration [BOOTPROTO=static]; 3. Execute the command [service network restart] to restart the network service.
- CentOS 3587 2020-03-31 15:16:28
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