Guide for converting a netLD virtual appliance installation into a redundant configuration.


NOTE:  this document is for versions prior to Version 18....it is NOT applicable to V19.  For V19, use VM hypervisor or vsphere HA


This document will explain the steps required in order to convert a set of standalone virtual appliances into a master/slave redundant installation.


Overview

  1. Convert netLD virtual appliance into a master server
  2. Convert a second netLD virtual appliance into a slave server
  3. Managing redundant servers

1. Convert netLD server to master server

Follow these steps to convert an existing netLD virtual appliance to a master server.

  1. Connect to the netLD server via SSH. The default credentials are: 
    Username: get master username from support
Password: get master password from support

     

  2. Convert the server to a redundant master by running the following commands: 
    cd /usr/share/netld
sudo su
./radmin master <slave-ip-address>
# (the <slave-ip-address> should be the IP address of the server that the redundant slave will run on.)

     

  3. Reboot the netLD server by running the following command: 
    reboot

     

  4. Confirm that the system is configured for redundancy by logging into the netLD server via SSH and run the following command from the /usr/share/netld directory to check the current redundancy status: 
    ./radmin status


  5. The results of the command will contain the following:
    Role: master 
Replication: configured 
PostgreSQL: configured (not streaming) 
Slave Host: <IP Address>



2. Convert netLD server to slave server

Follow these steps to convert the second netLD virtual appliance to a slave server.

  1. Connect to the netLD server via SSH. 
  2. Convert the server to a redundant slave by running the following commands: 
    cd /usr/share/netld 
sudo su 
./radmin slave <master-ip-address> 
# (the <master-ip-address> should be the IP address of the server that the redundant master will run on.) 
# You will be asked to confirm overwriting the local database and for the master server's admin password 


  3. Reboot the netLD server by running the following command:
    reboot


  4. Confirm that the system is configured for redundancy by logging into the netLD server via SSH and run the following command from the /usr/share/netld directory to check the current redundancy status: 
    ./radmin status


  5. The results of the command will contain the following:
    Role: slave 
Replication: configured 
PostgreSQL: configured (streaming: 0/2468ACE1) 
Slave Host: <IP Address>

3. Managing Redundant Servers

Redundant server management article