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Polites

Installing

A bootstrap.sh util script exists for install the needed libaries for Cassandra and polites to run.

To install just polites, setup.py exists.

$ python setup.py install

Running

Once installed polites can be run from the command line. To get the polites server/agent up and running, use the server command.

$ polites --command server

To check that polites start properly, polites provides client commands

$ polites --command client status
<xml><status>Running</status></xml>
    <xml><auto-snapshot>True</auto-snapshot><last-snapshot>1381067808927</last-snapshot></xml>

If there was a problem starting Cassandra Polites will attempt to read cassandra log file located in the configuration provided by config.py.

##Cassandra HOME
cass_home = "/var/lib/cassandra"
default_web_port = 8080
hostname = None

If there was a problem starting the polites server, polites logs to polites.log in the current directory polites is being ran from.

$ ls -l polites.log
polites.log

Python Agent for running alongside Cassandra provides cli options for configuration management, performing snapshots, and restoring from a snapshot/backup

REST API

  • Status of Node, with Error message
  • Force Start/Restart of Node*
  • Take Snapshot*
  • Restore from File*

Documentation

After starting the polites agent server command (# python agent.py --command server).

The documentation can be viewed at http://<hostname>:<port>/docs

  • The default hostname in the settings/config.py is 127.0.0.1
  • The default port in settings/config.py is 8080
  • Restarting/Starting Cassandra also updates configuration
    • Restarting/Starting Cassandra can be accomplished via curl command
    • curl -X POST -d "restart=True" http://<host>:<port>/
  • Documentation : build/html/index.html

Install Apache Cassandra and Python Requirements File

  • git clone https://github.com/seanmccully/polites.git
  • cd polites
  • ./install.sh
  • Will try to install java, python, pip dependencies, and apache cassandra. Once install.sh finishes you should be able to run polites/agent.py from any directory