What if ELB itself fails

0 votes

We use Load balancers to have a back up when our resources crash but what if, in situations like these, the ELB itself fails? Is this possible? If yes, what happens then?

May 15, 2019 in AWS by Travis

recategorized May 15, 2019 2,756 views

2 answers to this question.

0 votes

Something like has actually happened before in 2012 where a portion of ELB state data was logically deleted and customers were not able to manage their load balancers. Funny thing, they were able to create new load balancer but not able to manage the existing ones. The entire article explains the event in detail.

But in such situations, there are three possible ways to get out of it:

  • Wait for AWS to restore service
  • Route traffic directly to instance public IPs or elastic IPs if available
  • Move your app and traffic to a different region or different provider
answered May 15, 2019 by Nitesh
0 votes

This is the exact same reason why AWS provides multiple load balancers in different availability zones. You can enable cross-zone load balancing and hence if one load balancer there will still be another in another availability zone.

answered May 15, 2019 by Takeshi
What is cross-zone load balancing?

I've explained here. Have a look at my answer here. 

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