Yesterday we moved from 2 node Galera to 4 node Galera with a brand new infrastructure. But after we move the database, Galera started throwing "WSREP has not yet prepared node for application use" error. However all 4 nodes are operational.

New symptom: This error comes from only one table :/


  • Galera is working with 4 nodes
  • All 4 nodes are in the same local network
  • There is no network connectivity issue
  • There is no disk issue (or IO)

We tried these but;

  • Increasing CPU did not help
  • Increasing RAM did not help
  • Changing config for auto_increment_increment to 4 did not help
  • Changing config query_cache_size=0 did not help
  • Database fix didnt work


  • New disks are all SSD, so I dont think there is a slow IO issue
  • Constantly monitoring them but WSREP is always in sync
  • Not always throwing errors
  • Cannot insert to a specific table and it gives errors with that table most of the time

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.