While installing MongoDB on a server we were greeted with a warning message “vm.max_map_count is too low” By default, Linux will restrict the maximum number of memory maps per process to 65530 on Rocky Linux 8. While this may be…
Setting up a passwordless SSH connection is great, it helps you automate tasks that require connections to different servers by removing the need to enter passwords. You generate a private and public keypair on the source server then copy the…
GoAccess is a web log viewer and analyzer, it also parses logs in realtime. This comes specially handy when you need to understand the traffic your server is getting. While installing GoAccess on a new server we got the following…
We recently had to deploy a wildcard SSL certificate to an Microsoft Azure web app. The company we buy our certs from, issues them in .crt format by default, we have to convert them to .pfx ourselves. This isn’t a…
To mount a Windows share on a Linux machine you’ll need CIFS. To install CIFS, issue the following at shell: yum install cifs-utils sudo apt-get install cifs-utils Create an empty folder at the location you want to mount the drive:…
We had to reboot a server we manage which had frozen/crashed during the night. The server rebooted but none of the services would come online. We tried filtering the logs to a new file to drill down the errors at…
One of our production servers started throwing this error whenever we tried to start/stop/restart a service. Heck, even issuing reboot would return a similar error. Failed to stop httpd.service: Failed to activate service ‘org.freedesktop.systemd1’: timed out The only thing that…
Ran into this error on a server recently. We had to kill the VNC server because it stalled having its session running for an extended period. # systemctl restart vncserver@:1 Job for vncserver@:1.service failed because a configured resource limit was…
The HISTORY command in bash lets you see the last 1000 commands issued at the terminal. By default, this list does not contain timestamps for the commands you’ve issued. To enable timestamps, issue the following at the terminal: echo ‘HISTTIMEFORMAT=”%d/%m/%y…
Unable to connect to VNC Server using your chosen security setting. Either upgrade VNC Server to a more recent version, or select a weaker level of encryption Saw this error message on a new installation of POP OS 18.04 LTS…