Immutable Cloud Infrastructure one container at a time
If you have directories on your machine that you want to share out to other machines then you can do this by setting up your machine as an NFS server. However with NFS you can only share out folders to machine that are in the same private network. If you […]
Let’s say you want to setup group folder that’s available via nfs. However this time only a particulat Linux group is allowed to have read+write access to this folder. You can do this by ensuring the exported folder is owned by a group, and then setup the SGID. You can […]
Network Files System (NFS) is a protocol that let’s one Linux box (NFS server) to share a folder with another Linux box (NFS Client). On the NFS client this shared folder looks like just an ordinary folder. NFS only works in an internal network so you can share folders over […]
This is walktrhough how to generate ssl certificates and then configure https on a CentOS 7 Apache server to use the ssl certificate.
So far we have configured web servers to allow connections via the http protocol. However http is not secure which is why it’s better to use https. When using https, we actually encrypt all data traffic using Symmetric and Asymmetric Encryption. To setup the above encryption system on our Apache […]
Common Gateway Interface (CGI) is a protocol that let’s you run custom scripts via the web. It’s not as commonly used as before, but you still need to know this as part of the RHCE exam objectives. In Apache, there is a default folder where you can place scripts in, […]
Virtual Hosts is one of Apache’s most powerful and commonly used feature. Virtual Hosts (aka vhosts) let’s allows you to host multiple websites on a single machine. There are 2 big advantages to this: Rather than needing one ip address per website, you know just need one ip address for […]
In the previous tutorial, we saw how we can host multiple websites on the same box using vhosts. Now we’ll look at how we can configure Apache to password protect some web content. In Apache you can set up authentication so that when a user attempts to access a given […]
It’s often useful to measure and view various system utilisation metrics. dstat and sysstat are typical tools that can do this task.
This course covers everything you need to know in order to pass the Red Hat Certified Systems Administrator (RHCSA) exam for RHEL 7. Becoming RHCSA certified proves that you have developed a strong proficiency in RHEL. RHEL is short for “RedHat Enterprise Linux” and as the name suggests, it’s a […]