Installing MongoDB 4.2 on CentOS 7

I’m following the official mongoDB manual to make the installation. I’m using XFS filesystem with RAID10 on my machine, that’s the official document recommended. Paste the code. If you receive these errors You may solve using this solution on transparent_hugepage always or from the official document

Update CentOS 7 kernel in OVH

I need to update newer version of CentOS 7 kernel to allow my server to use Docker with OverlayFS. Identify the server kernel Navigate to the boot directory Download the kernel Regenerate grub2 Reboot the server

mount: unknown filesystem type overlay

You need Linux kernel 3.14++ to use overlayFS. I need to use overlayFS because Docker recommend to use it The devicemapper storage driver is deprecated in Docker Engine 18.09, and will be removed in a future release. It is recommended that users of the devicemapper storage driver migrate to overlay2. It doesn’t work So, I try to update the newest Continue reading “mount: unknown filesystem type overlay”

System error ‘[security.WindMcryptCbc.encrypt] extension ‘mcrypt’ is not loaded.’.

I don’t like error, but I have to fix the error, I note down here to do reference. I’m using CentOS 7, I think cause by upgraded from PHP 5 to PHP 7. I’m using DirectAdmin. What I found from internet The mcrypt extension has been abandonware for nearly a decade now, and was also Continue reading “System error ‘[security.WindMcryptCbc.encrypt] extension ‘mcrypt’ is not loaded.’.”

An error occurred while installing mysql2 (0.5.2), and Bundler cannot continue.

Gem files will remain installed in /var/www/discourse/vendor/bundle/ruby/2.5.0/gems/mysql2-0.5.2 for inspection. Results logged to /var/www/discourse/vendor/bundle/ruby/2.5.0/extensions/x86_64-linux/2.5.0-static/mysql2-0.5.2/gem_make.out An error occurred while installing mysql2 (0.5.2), and Bundler cannot continue. Make sure that gem install mysql2 -v ‘0.5.2’ –source ‘https://rubygems.org/’ succeeds before bundling. In Gemfile: mysql2 I found the best way to solve the problem. I think that you may missing Continue reading “An error occurred while installing mysql2 (0.5.2), and Bundler cannot continue.”