kube-arangodb/docs/design/upgrading.md

Upgrade procedure

Upgrading ArangoDB single to another version

The process for upgrading an existing ArangoDB single server to another version is as follows:

• Set CR state to Upgrading
• Remove the server Pod (keep persistent volume)
• Create a new server Pod with new version
• Wait until server is ready before continuing
• Set CR state to Ready

Upgrading ArangoDB cluster to another version

The process for upgrading an existing ArangoDB cluster to another version is as follows:

• Set CR state to Upgrading
• For each agent:
  • Remove the agent Pod (keep persistent volume)
  • Create new agent Pod with new version
  • Wait until agent is ready before continuing
• For each dbserver:
  • Remove the dbserver Pod (keep persistent volume)
  • Create new dbserver Pod with new version
  • Wait until dbserver is ready before continuing
• For each coordinator:
  • Remove the coordinator Pod (keep persistent volume)
  • Create new coordinator Pod with new version
  • Wait until coordinator is ready before continuing
• Set CR state to Ready