How to install dig and host on CentOS 7
On CentOS 7 default, you can’t use dig or host command: How to install dig on CentOS 7? The DIG tool and the HOST tool…
Tag: CentOS
How to create a sFTP User Account on CentOS 7
First login ssh with root account then you follow these steps: Step 1: Create a sFTP group Step 2: Create a sFTP user Result: Note:…
Example Load Balancing with HAProxy on CentOS
Example we have 3 server, we install HAProxy on a server (51.15.94.246), and nginx on two other servers (212.47.238.225 and 51.15.132.220 running Nginx on port…
How to install LibreOffice on CentOS
LibreOffice is a powerful office suite – its clean interface and feature-rich tools help you unleash your creativity and enhance your productivity. LibreOffice includes several…
How to fix error can’t save iptables settings on CentOS 7
On CentOS 7, you can’t save iptables settings, how to fix this issue Step 1: check service firewalld: If this service is running, disable it…
CentOS: how to fix error: BDB2053 Freeing read locks for locker
CentOS: how to fix error: BDB2053 Freeing read locks for locker? Here, two examples for this error. How to fix this error? Step 1: Result:…
How to flush DNS cache on CentOS
Flush caching BIND server DNS cache A caching BIND server obtains information from another server (a Zone Master) in response to a host query and…
CentOS: how to remove only one package
If you use yum remove command, you remove the package and the dependencies of the package. How to remove only one package like gnupg2 Example…
PHP: How to fix error shell_exec can’t run some command on Linux
Example you create file 1.php with content: If you run this command with root: It work well But if you run under HTTP: http://tutorialspots.com/1.php it…
How to build Node.JS from source on CentOS 7
Step 1: download source Step 2: decompression Result: Step 3: change dir Step 4: install gcc-c++ Step 5: If you get warnings: You can install…