go-nodetool

A golang library to manage Cassandra / Scylla clusters.

Dependencies

This library needs the Jolokia JMX<->HTTP bridge to work. It uses HTTP requests to the Jolokia server in order to read/write/exec Cassandra MBeans. To see how you can use Jolokia in Cassandra, check this guide.

Usage

go-nodetool performs administrative functions on a Cassandra / Scylla cluster. The commands available at the moment are:

Command	Explanation
Status	information about the cluster
Version	version of the specific instance
OperationMode	operation mode of the specific instance
Decommission	decommission the specific instance

import (
	"net/url"
	"github.com/yanniszark/go-nodetool/nodetool"
)

url, _ = url.Parse("127.0.0.1:8778/jolokia/")
nt := nodetool.NewFromURL(url)

nodeMap, err := nt.Status()

Contributing

Adding new commands is pretty straightforward. If you wish to extend this library with more commands, open an issue to request an enhancement or a PR to submit one. Use the existing commands as a guide on how to implement new ones and include unit tests.

Acknowledgement

A signification portion of code from this library comes from Jetstack Navigator. Modifications were made so that the library could be extended more easily.