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Grid master loses connectivity

ibc321
Techie
Posts: 2
1676     0

Hi everyone,

 

I'm using three Infoblox 1410 appliances; two appliances are in Data Center A and one appliance is in Data Centre B. All three appliances are part of a grid.

 

Currently, one of the appliances in Data Centre A is the grid master. However, if Data Centre A lost connectivity to the Internet for some reason, then is it possible for the appliance in Data Centre B to automatically become the grid master? Is the command line the only way to promote an appliance from grid candidate master to grid master?

Re: Grid master loses connectivity

RichA
Techie
Posts: 9
1677     0

The GMC in data center B "could" become the Grid Master but, it needs to be promoted via the command line.  It does not automatically assume the role like two appliances in an HA pair configuration.  I say "could" because it is a manual process.

Re: Grid master loses connectivity

RichA
Techie
Posts: 9
1677     0

Unfortunately, promoting the GMC to the master is a command line process and is not an automatic process like an HA pair.  In your scenario, the appliance in Data Center B can be promted if the appliance in Data Center A is offline due to connectivity issues.  The problem is that the third appliance in Data Center A will not be able to connect to the GM until the connectivity returns.

Re: Grid master loses connectivity

Adviser
Posts: 200
1677     0

RichA is correct in that it's a manual process.  This is by design to ensure you don't have a network related issue with multiple GMCs attempting to stand up and become GMs simultaneously.  It would be very bad if suddenly you ended up with a Grid where some members looked at one GM and others looked at another GM.

 

GMC promotion should generally only occur if your GM is truly down and will not be returning to operation for an extended period of time.  If the outage is temporary and you don't have a critical need to make immediate changes, leaving things run as-is will be just fine.  The Grid is designed to be resilient that way.

 

Re: Grid master loses connectivity

ibc321
Techie
Posts: 2
1677     0

Thanks for confirming that RichA and DSmith!

Re: Grid master loses connectivity

pedromourinha
Techie
Posts: 1
1677     0

Hi,

 

What happens if a Grid Memberdoesn't contact the GM ?

 

Example,

Grid Master goes down.

There are no GMC configured, only members.

 

 

What happens to the members?

They still working?

What happens if a Grid Member , doesn't contact the GM for more thant 4 weeks?

 

Thank you

Re: Grid master loses connectivity

TTiscareno Community Manager
Community Manager
Posts: 361
1677     0

Grid members will continue to operate, but in an offline state. Any updates will be queued until connection is restored, at which point these updates will be synchronized with the Grid Master.

 

Regards,

Tony

Re: Grid master loses connectivity

[ Edited ]
toran
Techie
Posts: 9
1677     0

great thanks for the information.

 

 

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