psyhomb / zklock

Acquire distributed lock over Zookeeper

About

zklock.py allows you to run any shell command while acquiring distributed lock over Zookeeper, similar what flock does except it acquires local lock (over local file).

Requirements

This script requires kazoo python module, you can find out more about it here

Usage

Command line only

zklock.py --server zookeeper.example.com --port 2181 --project test --command "service test restart"

Command line with configuration file zklock.conf

[zklock]
server = zookeeper.example.com
port = 2181
lock_timeout = 10
delay_exec = 1
project = test
command = service test restart

zklock.py --config zklock.conf

Also if you want or need to, you can simulate different states by using true/false commands

Simulate OK state

zklock.py --server zookeeper.example.com --port 2181 --project test --command true

Simulate FAILED state

zklock.py --server zookeeper.example.com --port 2181 --project test --command false

License and Authors

Author: Milos Buncic