how to setup a ha flink cluster on k8s?

[Rock]

I'm trying to setup a flink cluster on k8s for production use.But the setup here https://ci.apache.org/projects/flink/flink-docs-release-1.9/ops/deployment/kubernetes.html  this not ha , when job-manager down and rescheduled

the metadata for running job is lost. 

 

I tried to use ha setup for zk  https://ci.apache.org/projects/flink/flink-docs-release-1.9/ops/jobmanager_high_availability.html on k8s , but can't get it right.

 

Stroing  job's metadata on k8s using pvc or other external file system should be  very easy.Is there a way to achieve it.

[vino yang]

Hi Rock,

I searched by Google and found a blog[1] talk about how to config JM HA for Flink on k8s. Do not know whether it suitable for you or not. Please feel free to refer to it.

Best,

Vino

[1]: http://shzhangji.com/blog/2019/08/24/deploy-flink-job-cluster-on-kubernetes/

Rock <[hidden email]> 于2019年11月16日周六 上午11:02写道：

I'm trying to setup a flink cluster on k8s for production use.But the setup here https://ci.apache.org/projects/flink/flink-docs-release-1.9/ops/deployment/kubernetes.html  this not ha , when job-manager down and rescheduled

the metadata for running job is lost. 

 

I tried to use ha setup for zk  https://ci.apache.org/projects/flink/flink-docs-release-1.9/ops/jobmanager_high_availability.html on k8s , but can't get it right.

 

Stroing  job's metadata on k8s using pvc or other external file system should be  very easy.Is there a way to achieve it.

[Yang Wang]

Hi Rock,

If you want to start a ha flink cluster on k8s, the simplest way is to use ZK+HDFS/S3,

just as the ha configuration on Yarn. The zookeeper-operator could help the start a zk

cluster.[1] Please share more information that why it could not work.

If you are using kubernetes per-job cluster, the job could be recovered when the jm pod

crashed and restarted.[2] The savepoint could also be used to get better recovery. 

[1].https://github.com/pravega/zookeeper-operator

[2].https://github.com/apache/flink/blob/release-1.9/flink-container/kubernetes/README.md#deploy-flink-job-cluster

vino yang <[hidden email]> 于2019年11月16日周六 下午5:00写道：

Hi Rock,

I searched by Google and found a blog[1] talk about how to config JM HA for Flink on k8s. Do not know whether it suitable for you or not. Please feel free to refer to it.

Best,

Vino

[1]: http://shzhangji.com/blog/2019/08/24/deploy-flink-job-cluster-on-kubernetes/

Rock <[hidden email]> 于2019年11月16日周六 上午11:02写道：

I'm trying to setup a flink cluster on k8s for production use.But the setup here https://ci.apache.org/projects/flink/flink-docs-release-1.9/ops/deployment/kubernetes.html  this not ha , when job-manager down and rescheduled

the metadata for running job is lost. 

 

I tried to use ha setup for zk  https://ci.apache.org/projects/flink/flink-docs-release-1.9/ops/jobmanager_high_availability.html on k8s , but can't get it right.

 

Stroing  job's metadata on k8s using pvc or other external file system should be  very easy.Is there a way to achieve it.