Re: Cassandra on Kubernetes

2019-10-30 Thread John Sanda
One of the problems I have experienced in the past has more to do with Java than Cassandra in particular, and that is the JVM ignoring cgroups. With Cassandra in particular I would often see memory usage go higher than what was desired. This would lead to pods getting oom killed. This was fixed in

Re: Cassandra on Kubernetes

2019-10-30 Thread Jean-Armel Luce
Hi Jain, Thanks for your comments about CassKop. We began the development of Casskop at the beginning of 2018. At this time, some K8S objects (i.e. statefulsets, operators, …) were still in beta version and we discovered a few strange behaviours. We upgraded to K8S 1.12 in mid-2018. After thi

Re: Cassandra on Kubernetes

2019-10-30 Thread Akshit Jain
Hi Jean Thanks for replying. I had seen CassKop and the amount functionality it provides is quite awesome as compared to other operators. I would like to know how stable is kubernetes for stateful/database applications right now? I haven't read/heard any major production stateful application runn

Re: Cassandra on Kubernetes

2019-10-30 Thread Jean-Armel Luce
Hi, We are currently developping CassKop, a Cassandra operator for K8S. This operator is developped in Go, based on the operator-sdk framework. At this time of the project, the goal is to deploy a Cassandra cluster in 1 Kubernetes datacenter, but this will change in next versions to deal with Kub