0
votes

I am trying to install a Flink HA cluster (Zookeeper mode) but the task manager cannot find the job manager.

Here I give you the architecture;

- Machine 1 : Job Manager + Zookeeper
- Machine 2 : Task Manager

masters:

Machine1

slaves :

Machine2

flink-conf.yaml:

#jobmanager.rpc.address: localhost
jobmanager.rpc.port: 6123
blob.server.port: 50100-50200
taskmanager.data.port: 6121
high-availability: zookeeper
high-availability.zookeeper.quorum: Machine1:2181
high-availability.zookeeper.path.root: /flink-1.5.1
high-availability.cluster-id: /default_b
high-availability.storageDir: file:///shareflink/recovery

Here this is the log of Task Manager, it tries to connect to localhost instead of Machine1:

2018-08-17 10:46:44,875 INFO  org.apache.flink.runtime.util.LeaderRetrievalUtils            - Trying to select the network interface and address to use by connecting to the leading JobManager.
2018-08-17 10:46:44,876 INFO  org.apache.flink.runtime.util.LeaderRetrievalUtils            - TaskManager will try to connect for 10000 milliseconds before falling back to heuristics
2018-08-17 10:46:44,966 INFO  org.apache.flink.runtime.net.ConnectionUtils                  - Retrieved new target address /127.0.0.1:37133.
2018-08-17 10:46:45,324 INFO  org.apache.flink.runtime.net.ConnectionUtils                  - Trying to connect to address /127.0.0.1:37133
2018-08-17 10:46:45,325 INFO  org.apache.flink.runtime.net.ConnectionUtils                  - Failed to connect from address 'Machine2/IP-Machine2': Connection refused
2018-08-17 10:46:45,325 INFO  org.apache.flink.runtime.net.ConnectionUtils                  - Failed to connect from address '/127.0.0.1': Connection refused
2018-08-17 10:46:45,325 INFO  org.apache.flink.runtime.net.ConnectionUtils                  - Failed to connect from address '/IP_Machine2': Connection refused
2018-08-17 10:46:45,325 INFO  org.apache.flink.runtime.net.ConnectionUtils                  - Failed to connect from address '/127.0.0.1': Connection refused
2018-08-17 10:46:45,326 INFO  org.apache.flink.runtime.net.ConnectionUtils                  - Failed to connect from address '/IP_Machine2': Connection refused
2018-08-17 10:46:45,326 INFO  org.apache.flink.runtime.net.ConnectionUtils                  - Failed to connect from address '/127.0.0.1': Connection refused
2018-08-17 10:46:45,726 INFO  org.apache.flink.runtime.net.ConnectionUtils                  - Trying to connect to address /127.0.0.1:37133
2018-08-17 10:46:45,727 INFO  org.apache.flink.runtime.net.ConnectionUtils                  - Failed to connect from address 'Machine2/IP-Machine2

2018-08-17 10:47:22,022 WARN  akka.remote.ReliableDeliverySupervisor                        - Association with remote system [akka.tcp://[email protected]:36515] has failed, address is now gated for [50] ms. Reason: [Association failed with [akka.tcp://[email protected]:36515]] Caused by: [Connection refused: /127.0.0.1:36515]

2018-08-17 10:47:22,022 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor            - Could not resolve ResourceManager address akka.tcp://[email protected]:36515/user/resourcemanager, retrying in 10000 ms: Could not connect to rpc endpoint under address akka.tcp://[email protected]:36515/user/resourcemanager..
2018-08-17 10:47:32,037 WARN  akka.remote.transport.netty.NettyTransport                    - Remote connection to [null] failed with java.net.ConnectException: Connection refused: /127.0.0.1:36515

PS. : /etc/hosts contains the localhost, Machine1 and Machine2

Can you please tell me how the Task Manager can connect to Job Manager ?

Regards

1

1 Answers

0
votes

That's what we have on taskmanagers. Does it work as a cluster w/o HA?

root@flink-taskmanager-deployment-nonprod-597f858cb-4nmbr:/opt/flink# cat conf/masters 
flink-jobmanager-nonprod.rpds.svc.cluster.local:8081

root@flink-taskmanager-deployment-nonprod-597f858cb-4nmbr:/opt/flink# cat conf/slaves 
localhost

root@flink-taskmanager-deployment-nonprod-597f858cb-4nmbr:/opt/flink# cat conf/flink-conf.yaml 

jobmanager.rpc.address: flink-jobmanager-nonprod.rpds.svc.cluster.local
...
...