Overview

High availability is a property of Network resilience, the ability to "provide and maintain an acceptable level of service in the face of fault and challenges to normal operation. Threats and challenges for services can range from simple misconfiguration over large scale natural disasters to targeted attacks. In such cases High Availability is helpful. This document is about the steps for HA setup.

Steps of configuration

Step 1. Make a server on Bare metal. VM does not seem to work in HA mode.

Step 2. Install the keepalive app on your local desktop and transfer it on the server. Always open the keepalive app with the Linux. Please ask Seceon support to get the keepalive app.

Step 3. Make sure that both the server should be in the same subnet for physical ip and additionally, there is a designated virtual ip in the same subnet. Lets say A and B are physical IP and V is the virtual IP)

Step 4. Login as root and then, Setup keepalived on both the server referring to VRRP IP. as follows:

• Untar the keepalived tar package (file).

• Go inside the folder where you untarred the package.

• Run the command [ ./setkeepalive.sh -a  <virtual ip> ]. <virtual ip> in our case would be V.

• To determine which interface has the virtual ip configured, go to cat /etc/keepalived/keepalived.conf. Here it will mention the interface name and virtual ip given above. Note, By default it is assigned to interface0, if you want to change the inface, it can be done here.

Step 5. You should set this up for both the servers and then restart them couple of times to ensure that you can see both the IPs (Physical and Virtual) as described below. The virtual IP will be only visible on the currently active server.

• Run the command "hostname -I" to see that the virtual ip is visible on the active server. The other server will not show the virtual ip.

Step 6. Now install the CCE package on both the server. Follow the instructions.