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 this upgrade, we did not encounter any real problems. However, we continue our tests; we have for example a cluster (16 nodes in 3 DC in the same region) which was deployed via CassKop and has been working correctly for 3 months , and we will continue to observe it during the next months before hopefully deploying a C* cluster via cassKop in production. In parallel, we do other tests of robustness and performances; right now, we have no real issue to report about K8S for our use case. I can’t say more right now. Thanks for your question. I would be more than happy to read other answers. Le mer. 30 oct. 2019 à 18:46, Akshit Jain <jainakshi...@gmail.com> a écrit : > 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 running on > k8s. > > > -Akshit > > > > > On Wed, 30 Oct, 2019, 8:12 PM Jean-Armel Luce, <jaluc...@gmail.com> wrote: > >> 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 >> Kubernetes in multi-datacenters. >> >> The following features are already supported by CassKop: >> - Deployment of a C* cluster (rack or AZ aware) >> - Scaling up the cluster (with cleanup) >> - Scaling down the cluster (with decommission prior to Kubernetes scale >> down) >> - Pods operations (removenode, upgradesstable, cleanup, rebuild..) >> - Adding a Cassandra DC >> - Removing a Cassandra DC >> - Setting and modifying configuration files >> - Setting and modifying configuration parameters >> - Update of the Cassandra docker image >> - Rolling update of a Cassandra cluster >> - Update of Cassandra version (including upgradesstable in case of major >> upgrade) >> - Update of JVM >> - Update of configuration >> - Stopping a Kubernetes node for maintenance >> - Process a remove node (and create new Cassandra node on another >> Kubernetes node) >> - Process a replace address (of the old Cassandra node on another >> Kubernetes node) >> - Manage operations on pods through CassKop plugin (cleanup, rebuild, >> upgradesstable, removenode..) >> - Monitoring (using Instaclustr Prometheus exporter to Prometheus/Grafana) >> - Pause/Restart & rolling restart operations through CassKoP plugin. >> >> We use also Cassandra reaper for scheduling repair sessions. >> >> >> If you would like more informations about this operator, you may have a >> look here : https://github.com/Orange-OpenSource/cassandra-k8s-operator >> >> Please, feel free to download it and try it. We would be more than happy >> to receive your feedback >> >> >> If you have any question about this operator, feel free to contact us via >> our mailing-list: prj.casskop.supp...@list.orangeportails.net or on our >> slack https://casskop.slack.com >> >> Note : this operator is still in alpha version and works only in a mono >> region architecture for now. We are currently working hard for adding new >> features in order to run it in multi-regions architecture. >> >> >> Thanks. >> >> >> >> Le mer. 30 oct. 2019 à 13:56, Akshit Jain <jainakshi...@gmail.com> a >> écrit : >> >>> Hi everyone, >>> >>> Is there anyone who is running Cassandra on K8s clusters. It would be >>> great if you can share your experience , the operator you are using and the >>> overall stability of stateful sets in Kubernetes >>> >>> -Akshit >>> >>
