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glusterfs (2) Versions 1.0.0

Installs/Configures a GlusterFS cluster using systemd

Berkshelf/Librarian
Policyfile
Knife
cookbook 'glusterfs', '= 1.0.0'
cookbook 'glusterfs', '= 1.0.0', :supermarket
knife cookbook site install glusterfs
knife cookbook site download glusterfs
README
Dependencies
Changelog
Quality

GlusterFS

Description

GlusterFS is a scalable network filesystem. Using common off-the-shelf hardware, you can create large, distributed storage solutions for media streaming, data analysis, and other data- and bandwidth-intensive tasks. GlusterFS is free and open source software.

This cookbook focuses on deploying a GlusterFS cluster via Chef.

Requirements

Cookbooks and gems

Declared in metadata.rb and in Gemfile.

Platforms

A systemd managed distribution: - RHEL Family 7, tested on Centos 7.2

Usage

Easy Setup

Set node['glusterfs']['hosts'] to an array containing the hostnames of the nodes of the GlusterFS cluster. By default it is set to [localhost].

It is also possible to let the config recipe use a search to find the members of a cluster. First you need to set node['glusterfs']['role'] to []. Then The search is parametrized by a role name, defined in attribute node['glusterfs']['role'] which default to glusterfs. Node having this role in their expanded runlist will be considered in the same GlusterFS cluster. For safety reason, if search is used, you need to define node['glusterfs']['size'] (1 by default). The cookbook will return (with success) until the search return size nodes. This ensures the stability of the configuration during the initial startup of a cluster.

Be sure to set node['glusterfs']['hosts'] to [] if you want to use search as by default it is set to [localhost] which deactivates search and ignore size attribute.

Test

This cookbook is fully tested through the installation of a working 3-nodes cluster in docker hosts. This uses kitchen (>= 1.5.0), docker (>= 1.10) and a small monkey-patch.

At the moment, the docker images are run in privileged mode which is highly insecure. This is needed by GlusterFS to mount volumes. You are invited to check the image used (sbernard/centos-systemd-kitchen) for the tests before running them.

For more information, see .kitchen.yml and test directory.

Attributes

Configuration is done by overriding default attributes. All configuration keys have a default defined in attributes/default.rb. Please read it to have a comprehensive view of what and how you can configure this cookbook behavior.

Recipes

  • default
  • repository (setup yum repositories)
  • package (install glusterfs-server)
  • service (make sure glusterd service is enabled and started)
  • configure (probe an host into the cluster and create a volume)
  • client (mount a glusterfs volume)

Setting Up Clients

Permit access to GlusterFS volumes using Gluster Native Client method

Example

"glusterfs": {
  "mounts": {
    "myvol": {
      "mount_point": "/mnt/data",
      "server": "host1.example"
    }
  }
}

It creates a mount point on the local filesystem at /mnt/data using GlusterFS fuse client.

Resources/Providers

Probe

Probe an host into the GlusterFS cluster.

Example

glusterfs_probe 'my-custom-host.test'

Volume

Create a GlusterFS volume

Example

Creation of a replicated volume with two storage servers
"glusterfs": {
  "volumes": {
    "myvol": {
      "type": "replica",
      "count": 2,
      "transport_type": "tcp",
      "mount_points": [[
        "host1.example:/mnt/brick1",
        "host2.example:/mnt/brick2",
      ]],
      "action": [["create", "start"]]
    }
  }
}

Changelog

Available in CHANGELOG.md.

Contributing

Please read carefully CONTRIBUTING.md before making a merge request.

License and Author

Copyright (c) 2016 Sam4Mobile

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Dependent cookbooks

cluster-search >= 0.0.0
yum >= 0.0.0

Contingent cookbooks

There are no cookbooks that are contingent upon this one.

Changelog

1.0.0

Initial version with Centos 7 support:

  • create GlusterFS volumes (does not format drives)
  • mount GlusterFS volumes with fuse driver

Foodcritic Metric
            

1.0.0 passed this metric