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Update on nrpe check check_swift_storage: * Refactor check_replication function * Raise STATUS_CRIT on null values * Clean code per flake8 and previous review * Add unit_test for nrpe check check_swift_storage.py Change-Id: Ie076b8ea56f66c1e15a9bfe2e400b49f968fa4ed Closes-Bug: #1673441 Signed-off-by: Alvaro Uria <alvaro.uria@canonical.com> |
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README.md
Overview
This charm provides the swift-storage component of the OpenStack Swift object storage system. It can be deployed as part of its own standalone storage cluster or it can be integrated with the other OpenStack components, assuming those are also managed by Juju. For Swift to function, you'll also need to deploy an additional swift-proxy using the cs:precise/swift-proxy charm.
For more information about Swift and its architecture, visit the official project website https://docs.openstack.org/developer/swift.
This charm was developed to support deploying multiple version of Swift on Ubuntu Precise 12.04, as they relate to the release series of OpenStack. That is, OpenStack Essex corresponds to Swift 1.4.8 while OpenStack Folsom shipped 1.7.4. This charm can be used to deploy either (and future) versions of Swift onto an Ubuntu Precise 12.04, making use of the Ubuntu Cloud Archive when needed.
Usage
This charm is quite simple. Its basic function is to get a storage device setup for swift usage, and run the container, object and account services. The deployment workflow for swift using this charm is covered in the README for the swift-proxy charm at cs:precise/swift-proxy. The following are deployment options to take into consideration when deploying swift-storage.
Zone assignment
If the swift-proxy charm is configured for manual zone assignment (recommended), the 'zone' option should be set for each swift-storage service being deployed. See the swift-proxy README for more information about zone assignment.
Storage
Swift storage nodes require access to local storage and filesystem. The charm takes a 'block-device' config setting that can be used to specify which storage device(s) to use. Options include:
- 1 or more local block devices (eg, sdb or /dev/sdb). It's important that this device be the same on all machine units assigned to this service. Multiple block devices should be listed as a space-separated list of device nodes.
- a path to a local file on the filesystem with the size appended after a pipe, eg "/etc/swift/storagedev1.img|5G". This will be created if it does not exist and be mapped to a loopback device. Good for development and testing.
- "guess" can be used to tell the charm to do its best to find a local devices to use. EXPERIMENTAL
Multiple devices can be specified. In all cases, the resulting block device(s) will each be formatted as XFS file system and mounted at /srv/node/$devname.
Installation repository
The 'openstack-origin' setting allows Swift to be installed from installation repositories and can be used to setup access to the Ubuntu Cloud Archive to support installing Swift versions more recent than what is shipped with Ubuntu 12.04 (1.4.8). For more information, see config.yaml.