Page tree

Contents

The set promote_master command specifies a NIOS appliance as the new Grid Master in the case of a Grid Master failure. The new Grid Master then alerts all the Grid members to redirect their traffic to it. If you have configured multi-site reporting cluster, you can modify the primary reporting site. For information about reporting clusters, refer to the Infoblox NIOS Administrator Guide.
You can do one of the following to promote a master candidate to a Grid Master:

  • Immediately notify all Grid members about the promotion.
  • Set a sequential notification to provide wait time for Grid members to join the new Grid Master. Staggering the restarts of Grid members can minimize DNS outages. The sequential order for Grid members to join the new Grid Master begins with the old Grid Master and then the Grid members in FQDN order. The default delay time is 120 seconds. You can configure the delay time from a minimum of 30 seconds up to 600 seconds.

For this command to be effective, you must have previously specified an appliance as the Grid Master candidate. Then when you lose the Grid Master, you can remotely (SSH) log in to the Grid Master candidate and execute this command.


Note: When the previous Grid Master comes back on line, it automatically joins the Grid as a master candidate.


Syntax

set promote_master

This command has no arguments.

Examples

Infoblox > set promote_master
Do you want a delay between notification to Grid members? (y or n):

Enter n to promote the master candidate and send notifications to all Grid members immediately. The appliance displays the following:

This action will immediately promote master candidate to become the Grid Master. This feature is designed to be used primarily for disaster recovery.
Are you sure you want to do this? (y or n): y
The current member will become the Grid Master.
Are you really sure you want to do this? (y or n): y
Member promotion beginning on this member.

Enter y to promote the master candidate to the Grid Master immediately and specify the delay time for the Grid members to join the new Grid Master. The appliance displays the following:

Set delay time for notification to Grid members? [Default: 120s]: 200
This action will immediately promote master candidate to become the Grid Master. This feature is designed to be used primarily for disaster recovery.
Are you sure you want to do this? (y or n): y
The current member will become the Grid Master. The Grid members will be notified sequentially with a delay of 200 seconds.
Are you really sure you want to do this? (y or n): y

If you have configured multi-site reporting cluster, the appliance displays all the reporting sites in the order of priority you have configured. For example if you have configured the following reporting sites: site 4(priority 1), site 2 (priority 2), site 1(priority 3), and site 3 (priority 4)

Infoblox > set promote_master
Do you want a delay between notification to Grid members? (y or n): n
Primary reporting site candidates (in order of priority):

    1. site4 (Existing primary reporting site)
    2. site2
    3. site1
    4. site3

Please enter new primary reporting site (1-2) or 'c' to continue without changing primary reporting site: 5

The appliance displays the following error when you enter value incorrectly:

ERROR: Please enter a valid choice or 'c' to continue without changing the primary reporting site.
Please enter new primary reporting site (1-2) or 'c' to continue without changing primary reporting site: c
This action will immediately promote this member to become the grid master. This feature is designed to be used primarily for disaster recovery.
Are you sure you want to do this? (y or n): y The current member will become the grid master.
Are you really sure you want to do this? (y or n): y
Master promotion beginning on this member

Good Bye

To change the primary reporting site:

Infoblox > set promote_master
Do you want a delay between notification to Grid members? (y or n):n Primary reporting site candidates (in order of priority):

    1. site4 (Existing primary reporting site)
    2. site2
    3. site1
    4. site3

Please enter new primary reporting site (1-4) or 'c' to continue without changing primary reporting site: 2
Are you sure you want to do this? (y or n): y The current member will become the grid master.
Are you really sure you want to do this? (y or n): y Master promotion beginning on this member
Good Bye

The new priority order of reporting sites will be:

site2 (Existing primary reporting site)
site4
site1
site3

This page has no comments.