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Add a Cassandra upgrade mechanism #352

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@wallrj wallrj commented May 9, 2018

  • Add a NodePool.Status.Version attribute which has the lowest reported version from all the pilots in the pool.
  • Or nil, if the pilot failed to query its Cassandra database for its version.
  • Calculate an UpdateVersion action if the desired Cassandra version is higher than the version reported for a NodePool.
  • NodePools are upgraded one at a time.
  • Pods within a Nodepool are upgraded one at a time, using a rolling update strategy without any partitioning.
  • Upgrades are performed after Nodepools are created and after scale out.

Fixes: #257

Release note:

Navigator can now perform minor and patch upgrades of Cassandra clusters.

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@wallrj wallrj mentioned this pull request May 9, 2018
@wallrj wallrj changed the title Add a Cassandra upgrade mechanism WIP: Add a Cassandra upgrade mechanism May 9, 2018
* Add a NodePool.Status.Version attribute which has the lowest reported version from all the pilots in the pool.
* Or nil, if the pilot failed to query its Cassandra database for its version.
* Calculate an UpdateVersion action if the desired Cassandra version is higher than the version reported for a NodePool.
* NodePools are upgraded one at a time.
* Pods within a Nodepool are upgraded one at a time, using a rolling update strategy without any partitioning.
* Upgrades are performed after Nodepools are created and after scale out.

Fixes: jetstack#257
…m the controlling pod and add those generic labels to the pod template and pod pilot selectors
@wallrj wallrj changed the title WIP: Add a Cassandra upgrade mechanism Add a Cassandra upgrade mechanism Jun 7, 2018
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