Question
Tata Consultancy Services
BE
Last activity: 7 Nov 2018 22:44 EST
Unable to obtain session. Cassandra hasn't been started or is unavailable
After Upgrade Pega(7.1.9 to 7.3.1) and Pega Marketing from(7.1.3 to 7.3.1) we see that in
Decision Data Store the NODE status is JOINING on node 1
Adaptice Decision Manager the NODE status is JOINING_FAILED on node1
Error: IllegalStateException: Required service ServiceDependency{serviceName=DDS, instance=Default} is configured to run, but none of the nodes are actually running
Real-Time Grid the NODE status is JOINING_FAILED on node1
for Data Flow it is NORMAL on both nodes and for second node status is NORMAL on all tabs
i can see that in node details tab of Decision Data Store we have an error message for both Nodes
"Unable to obtain session. Cassandra hasn't been started or is unavailable"
Please do let me know if anyone has faced similar issue and how can we resolve the same.
We have ADM and VBD servers on node 1
PEG
GB
Is it possible the IP address has changed? (if you are not using an in place upgrade).
Try to check if Cassandra is up and running. There should be a second java process running associated to Cassandra.
You can also check if you can connect to the Cassandra database using CQL. If the login/password was not changed, you should be able access via command like this:
cqlsh.bat -u dnode_ext -p dnode_ext Proprietary information hidden
(replace IP address as appropriate)
Cqlsh is located in apache-tomcat-7.0.27\cassandra\bin for tomcat.
Tata Consultancy Services
BE
hello,
We are using In-Place Upgrade no change of IP address.
can you let me know how exactly to check Cassandra is running? However i can see below exception in logs
Caused by: com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (tried: / Proprietary information hidden:9042 (com.datastax.driver.core.exceptions.TransportException: [/ Proprietary information hidden:9042] Cannot connect), / Proprietary information hidden:9042 (com.datastax.driver.core.exceptions.TransportException: [/ Proprietary information hidden:9042] Cannot connect))
We are not using Cassandra data base we use Oracle 12c and Websphere not Tomcat.
Pegasystems Inc.
PL
Could you please check if the above IP addresses are assigned to the servers? Maybe that value is cached and full restart with cache clear will fix the issue. Do you have port 9042 open in that network?
AbbVie
US
Hi,
Which version of Java your running? If your running IBM JDK, cassandra will not work well. You need to make Open JDK or Oracle JDK.
If your running any of the JDK, please stop JVM and make sure no cassandra processing running on the application server.
If anything running kill those and start JVM and try to connect.
Regards,
Anandh