Set up Multiple service-discover Servers

Within a Carbonio Multi-Server installation, it is possible to install multiple service-discover servers, provided they are in odd numbers, e.g., 1, 3, 5 (or even more), because they can always find a quorum and avoid deadlocks.

Requirements

In order to setup additional service-discover servers, you need:

• having installed and configured package service-discover-server on one node (see Section SRV2: Directory Server, LDAP Server, and DB connection)

• the /etc/zextras/service-discover/cluster-credentials.tar.gpg file created in the set up of the first instance of service-discovery

Moreover, as mentioned before, make sure to install an odd number of service-discover servers.

Installation

Instructions to install multiple service-discover servers are the same for each new server installed, simply repeat the following procedure on each new server.

1. Install the software package.

   Ubuntu

   # apt install service-discover-server
   

   RHEL

   # dnf install service-discover-server
   

2. Copy the /etc/zextras/service-discover/cluster-credentials.tar.gpg file from the first service-discover server

3. Launch the setup:

   # service-discover setup-wizard
   

Repeat all the steps above on another node of the Multi-Server.