zlocker: zookeeper based isolated command execution

zlocker is a small tool meant to ease sequential execution of a command across a large number of hosts.

Configuration

zlocker is configured through command line arguments:

-z
    Comma-separated list of zookeeper servers to contact
-l
    Name of lock node in zookeeper
-w
    Optional sleep period, defaults to none
-t
    Zookeeper session timeout

The rest of the command line will be fed to the shell if a lock is successfully acquired.

Building

If you wish to inspect zlocker and build it by yourself, you may do so by cloning this repository and peforming the following steps :

mkdir -p $(GOPATH)/src
cd $(GOPATH)/src && git clone https://github.com/pyr/zlocker
make

Updating

It uses godep, so it should be easy.

dep status
dep ensure -update

Example usage

zlocker -z zk01,zk02,zk03 -l /zlock-service-restart service my-daemon restart