Troubleshooting

Error when starting cqlsh

If you start bin/cqlsh and receive the following error:

Traceback (most recent call last):

...

LookupError: unknown encoding:

Change the line in bin/cqlsh from:

self.output_codec = codecs.lookup(encoding)

to:

self.output_codec = codecs.lookup("UTF-8")

Endpoint Collision: External Cassandra (on start message) A node with address <IP address> already exists, cancelling join

See the Cassandra documentation for replacing a dead seed node.

Error in GMS logs: WARNING: Failed to check connection: java.net.SocketException: Too many open files

On RHEL Sysems, change the system limits from 1024 to 10240 in /etc/security/limits.d/90-nproc.conf, and then start a new shell for these changes to take effect:

soft nproc 10240

See the Cassandra documentation for recommended settings.

GMS does not install / start on Linux 64

When installing GMS IPs on a 64-bit Linux host, the compatibility packages must be installed on the Linux host. The compatibility packages are available with the OS distribution media.

When several GMS nodes are in a cluster, the following logs are on all GMSs:

New node has joined the ring: http://135.39.40.56:8080/genesys

Node has been removed from the ring: http://135.39.40.56:8080/genesys

New node has joined the ring: http://135.39.40.56:8080/genesys

Node has been removed from the ring: http://135.39.40.56:8080/genesys

New node has joined the ring: http://135.39.40.56:8080/genesys

Node has been removed from the ring: http://135.39.40.56:8080/genesys

New node has joined the ring: http://135.39.40.56:8080/genesys

Node has been removed from the ring: http://135.39.40.56:8080/genesys

Synchronize the clock of all GMS nodes. On Windows, use following command:

net time \\<ComputerName> /set /yes

Where \\<ComputerName> specifies the name of a server you want to check or with which you want to synchronize.

I cannot update GMS configuration through the GMS Service Management UI, and the following error is in the GMS logs:

Unsufficient permissions to perform this operation com.genesyslab.platform.applicationblocks.com.ConfigServerException: Unsufficient permissions to perform this operation (ErrorType=CFGNoPermission, ObjectType=CFGApplication, ObjectProperty=CFGDBID)

Make sure that all GMS applications have the user assigned in the Security tab, in Configuration Manager.