OpenStack is open source software for building private and public clouds. There are several ways to install OpenStack. This guide will walk you through the installation of DevStack, which is a documented shell script to build complete OpenStack development environments. We will start with the installation of Ubuntu 12.04 (LTS). Make sure that you create…
Everybody wants their stuff to be secure, until they actually try to use it. That’s the reason for this tidbit about disabling the default security on CentOS. SELinux is enabled by default on CentOS. To disable it, we need to edit /etc/selinux/config: SELINUX=disabled We need to reboot the machine for this to take effect. The…
The Gitlab self-hosted application uses HTTP by default. You can enable HTTPS by performing a couple of steps. You need to acquire an SSL certificate and corresponding key for a domain that is under your control, and tell Gitlab that it needs to use these resources. Create a directory which will hold the certificate and…
Jenkins uses HTTP by default. You can enable HTTPS by performing a couple of steps. You need to acquire an SSL certificate and corresponding key for a domain that is under your control, and tell Jenkins that it needs to use these resources. Jenkins needs a password store to be able to use your SSL…
Many times, we are locked in a situation where we have to search for multiple files with different extensions, this has probably happened to several Linux users especially from within the terminal. There are several Linux utilities that we can use to locate or find files on the file system, but finding multiple filenames or…
Sometimes you may find it useful to display the access rights of files or directories in octal form instead of rwx or perhaps you want to display both. Instead of using good old ls -l command, in most modern Linux distributions (if not all) you will find stat, an utility that displays file or filesystem…
Here come to my attention when i want to automatically have my new linux/unix users to change the password when they login into the server. Login into your server with root access type chage command : #chage -d 0 <username> example i have a username : fahmi #chage -d 0 fahmi -d mean : we…