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Cassandra problems

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Diagnostic information

This section explains the diagnostic information that needs to be gathered for Cassandra problems on the Private Cloud setup.

Diagnostic information Where can I gather this information? How do I gather this information?
Cassandra configuration files Cassandra
cp /opt/apigee/apigee-cassandra/conf/cassandra-topology.properties /tmp/cassandra_topology_$(hostname)-$(date +%Y.%m.%d_%H.%M.%S).properties
cp /opt/apigee/apigee-cassandra/conf/cassandra-env.sh /tmp/cassandra_envsh_$(hostname)-$(date +%Y.%m.%d_%H.%M.%S).sh
cp /opt/apigee/apigee-cassandra/conf/cassandra.yaml /tmp/cassandra_conf_$(hostname)-$(date +%Y.%m.%d_%H.%M.%S).yaml
Nodetool commands output Cassandra
alias nodetool=/opt/apigee/apigee-cassandra/bin/nodetool

Get the current Cassandra version:

nodetool version 2>&1 | tee /tmp/nodetool_version_$(hostname)-$(date +%Y.%m.%d_%H.%M.%S).txt

Get the current Cassandra datacenter status:

nodetool status 2>&1 | tee /tmp/nodetool_status_$(hostname)-$(date +%Y.%m.%d_%H.%M.%S).txt

Get the current ring/token status across the datacenter:

nodetool ring 2>&1 | tee /tmp/nodetool_ring_$(hostname)-$(date +%Y.%m.%d_%H.%M.%S).txt

Get more information about heap usage, uptime, exceptions, and so on:

nodetool info 2>&1 | tee /tmp/nodetool_info_$(hostname)-$(date +%Y.%m.%d_%H.%M.%S).txt

Get gossip info:

nodetool gossipinfo 2>&1 | tee /tmp/nodetool_gossipinfo_$(hostname)-$(date +%Y.%m.%d_%H.%M.%S).txt

Get status of the current Cassandra operations:

nodetool compactionstats -H 2>&1 | tee /tmp/nodetool_compactionstats_$(hostname)-$(date +%Y.%m.%d_%H.%M.%S).txt
nodetool tpstats 2>&1 | tee /tmp/nodetool_tpstats_$(hostname)-$(date +%Y.%m.%d_%H.%M.%S).txt
nodetool netstats -H 2>&1 | tee /tmp/nodetool_netstats_$(hostname)-$(date +%Y.%m.%d_%H.%M.%S).txt
nodetool cfstats -H 2>&1 | tee /tmp/nodetool_cfstats_$(hostname)-$(date +%Y.%m.%d_%H.%M.%S).txt

Get proxy historgrams (shows the full request latency recorded by the coordinator):

nodetool proxyhistograms 2>&1 | tee /tmp/nodetool_proxyhistograms_$(hostname)-$(date +%Y.%m.%d_%H.%M.%S).txt
Cassandra logs Cassandra
tar cvzf /tmp/cassandra_logs_$(hostname)_$(date +%Y.%m.%d_%H.%M.%S).tar.gz /opt/apigee/var/log/apigee-cassandra/system* /opt/apigee/var/log/apigee-cassandra/config*
tail -2000 /opt/apigee/var/log/apigee-cassandra/apigee-cassandra.log > /tmp/cassandra_apigee-cassandra_log_$(hostname)_$(date +%Y.%m.%d_%H.%M.%S).log
Version and status of components Cassandra
apigee-all version 2>&1 | tee /tmp/apigee_all_version_$(hostname)-$(date +%Y.%m.%d_%H.%M.%S).txt
apigee-all status 2>&1 | tee /tmp/apigee_all_status_$(hostname)-$(date +%Y.%m.%d_%H.%M.%S).txt
Compress all the diagnostic data Cassandra
tar -cvzf /tmp/data_CASE#_$(hostname).tar.gz /tmp/nodetool* /tmp/cassandra_* /tmp/apigee_all*