Installing pgEdge Platform and Configuring a Distributed, Multi-Master Replication Cluster

There are several ways to install pgEdge Platform and deploy a replication cluster. You can:

• Log in to each cluster host and manually deploy a cluster.
• Use pgEdge Platform on your local system to create a .json file that deploys a cluster on remote hosts.
• Use pgEdge Platform on your local system to create a .json file that deploys a local cluster.

Meeting Prerequisites

On each machine that will host a replication node, you must:

• Set SELinux to permissive or disabled mode on each host (opens in a new tab), followed by a system reboot.
• Configure passwordless sudo access for a non-root OS user on each host.
• Configure passwordless ssh access for the same non-root OS user on each host.
• Open any firewalls that could obstruct access between your servers.

Configuring Passwordless SSH

You can use the following steps to configure passwordless SSH on each node of the replication cluster:

ssh-keygen -t rsa
cd ~/.ssh
cat id_rsa.pub >> authorized_keys
chmod 700 ~/.ssh && chmod 600 ~/.ssh/authorized_keys

Configuring Passwordless sudo

To configure passwordless sudo, open the /etc/sudoers file, and add a line of the form:

%username ALL = (ALL) NOPASSWD: ALL

Where username specifies the name of your operating system user.