Degraded availability zone remediation for multi-availability zone clusters of host computers

A non-transitory computer-readable storage medium containing program instructions for auto or managing multi-availability zone (AZ) clusters of host computers in a cloud computing environment, wherein execution of the program instructions by one or more processors causes the one or more processors to perform steps comprising:

• automatically detecting a degraded state of a first AZ in the cloud computing environment having a first cluster section of a multi-AZ cluster of host computers located in the first AZ, wherein automatically detecting the recovered state of the first AZ includes selecting a random multi-AZ cluster located partially in the first AZ to execute a recovery workflow on the random multi-AZ cluster, wherein the recovery workflow includes checking health states of all host computers in a section of the random multi-AZ cluster that is located in the first AZ to determine whether the first AZ has recovered;
• scaling out a second cluster section of the multi-AZ cluster of host computers located in a second AZ in response to the detecting of the degraded state of the first AZ;
• automatically detecting a recovered state of the first AZ;
• and
• scaling in the second cluster section of the multi-AZ cluster of host computers located in the second AZ in response to the detecting of the recovered state of the first AZ.

A system comprising:

• memory;
• and
• at least one processor configured to:
• automatically detect a degraded state of a first availability zone (AZ) in a cloud computing environment having a first cluster section of a multi-AZ cluster of host computers located in the first AZ;
• scale out a second cluster section of the multi-AZ cluster of host computers located in a second AZ in response to the detecting of the degraded state of the first AZ;
• automatically detect a recovered state of the first AZ, wherein automatically detecting the recovered state of the first AZ includes selecting a random multi-AZ cluster located partially in the first AZ to execute a recovery workflow on the random multi-AZ cluster, wherein the recovery workflow includes checking health states of all host computers in a section of the random multi-AZ cluster that is located in the first AZ to determine whether the first AZ has recovered;
• and
• scale in the second cluster section of the multi-AZ cluster of host computers located in the second AZ in response to the detecting of the recovered state of the first AZ.