This environment variable specifies the primary GCS bucket name to recover the snapshot from. It is injected into the HumioCluster pod spec as an extraEnvVar by Terraform when var.dr != "" (both standby and active modes). Preserving this variable across both DR modes prevents pod recreation during promotion, which would otherwise cause ephemeral PVCs to be deleted and recovered snapshot data to be lost.

When this variable is set, LogScale automatically enables allowKafkaReset via the internal bucketStorageRecoverFrom configuration. Setting ALLOW_KAFKA_RESET_UNTIL_TIMESTAMP_MS separately is not required.

The GCP_RECOVER_FROM_* variables are only read once at startup by DataSnapshotLoader. After successful recovery, subsequent pod restarts use the local snapshot rather than the recovery bucket.