How to configure offline yum repository using DVD and HTTP or Apache server over the network in RHEL / CentOS 7

How to configure offline yum repository using DVD and HTTP or Apache server over the network in RHEL / CentOS 7

In this article I will show you the steps to configure an offline yum repository in your network using http server IMPORTANT NOTE: I had already written an aticle to use yum with apache but that was tested and validated with RHEL 5 and 6, and with RHEL 7 some httpd configuration option have changed. … Read more

How to check the swap memory usage by a process in Linux

How to check the swap memory usage by a process in Linux

Earlier I had written an article on swappiness and different commands to check memory usage per process on Linux here I will show you some of the methods which can be used to check the swap memory utilisation. Below article is tested and validated on Red Hat Enterprise Linux 7. IMPORTANT NOTE:  There is no way … Read more

How to test ssh connection using bash script in Linux

How to test ssh connection using bash script in Linux

There can be multiple scenarios due to which ssh connection may fail, some of them can be network issues password incorrect passphrase incorrect and many more.. so we will try to rule out all the possible failed scenarios with some pre-checks before we do the actual task to make sure my ssh doesn’t get hang … Read more

Part 4: How to create, launch and connect to an instance from scratch in Openstack

Part 4: How to create, launch and connect to an instance from scratch in Openstack

Below list of topics are covered in this article Create an Instance Associate Floating IP to the Instance Modify Security Group for the Instance Connect to the Instance In my last article I have already covered below topics Part 1: Step by Step Guide to Install Openstack using Packstack with Compute and Controller node on … Read more

Part 3: Create Glance Image, Cinder Volumes, Flavor Templates and key pairs for an Instance in Openstack

Part 3: Create Glance Image, Cinder Volumes, Flavor Templates and key pairs for an Instance in Openstack

Below list of topics are covered in this article: Creating Glance Image Create Volumes Create Flavors Managing Key Pairs In my last article I have already covered below topics Part 1: Step by Step Guide to Install Openstack using Packstack with Compute and Controller node on RHEL 7 Part 2: Configure Openstack OVSBridge, Network (Neutron), … Read more

Part 2: Configure Openstack OVSBridge, Network (Neutron), Public and Private Network, Router in Openstack

Part 2: Configure Openstack OVSBridge, Network (Neutron), Public and Private Network, Router in Openstack

Below list of topics are covered in this article Step 1: Configure OVSBridge on the Controller Step 2: Create Internal Network Step 3: Create External Network Step 4: Create Routers The important part of networking in the OpenStack cloud is OVS. Open vSwitch is not a part of OpenStack project. However, OVS is used in … Read more

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