Cassandra

Partioning

 * 1) Time Series with Cassandra (datastax)
 * 2) Metric storage and Collection with Cassandra (datastax)
 * 3) Case against byte-ordered partitioning
 * 4) Ebay
 * 5) * Ebay Storing time series data in Cassandra without using Byteordered Partioning (Part 1)
 * 6) * Ebay Storing time series data in Cassandra without using Byteordered Partioning (Part 2)
 * 7) cql3 and time-series data

Tuning Worker processes to access Cassandra

 * 1) Start the first worker, run it for 3-5 minutes, Cassandra will optimize the throughput, and when the throughput has stabilized
 * 2) Start the next worker, wait for a while to measure the consistent increased throughput
 * 3) Repeat and stop until there is no increase in throughput

If some queues are not producing ACK, it may be time to restart machine and/or rabbitmq

Opscenter

 * 1) Generate the agent package *after* you setup opscenter

(IMPORTANT) cd /opt/opscenter bin/setup.py

Debian cd /usr/share/opscenter bin/setup.py bin/opscenter -f
 * 1) copy the agent.tar.gz to each cassandra node
 * 2) run opscenter


 * Errors with installing OPSCENTER Schema? Check this out http://wiki.apache.org/cassandra/FAQ#schema_disagreement

Opscenter Agent
apt-get install sysstat cd /opt/agent/ bin/setup hostname_to_opscenter bin/datastax-agent -f
 * 1) install agent to /opt/agent