deployment-sessionstore04 is currently experiencing frequent, repeated Cassandra outages (see: T327521: Cassandra on deployment-sessionstore04 is being frequently killed by the kernel (OOM)). This has happened 16 times since the last restart of Kask, but eventually resulted in persistent request failures even after Cassandra was restored.
{"msg":"Error deleting in storage (gocql: no hosts available in the pool)" ,"appname":"sessions", ...}