591c084532
Add new secrets-storage relation to vault, supporting the use of block device encryption using dm-crypt/vaultlocker. Prepared devices are now recorded in the local unit kv store; this information is used to provide a list of configured block devices to the swift-proxy charm, rather than the previous best guess provided by determine_block_devices. This allows us to use the dm-crypt device name, rather than the underlying block device. Encrypted block devices are unlocked on boot using vaultlocker-decrypt systemd units (enabled by vaultlocker); /etc/fstab entries for such devices make use of a x-systemd.requires option to ensure that the block device is unlocked prior to attempting to mount it. Add new storage binding to allow charm to be used with Juju storage. Add new ephemeral-unmount configuration option to allow cloud ephemeral storage to be used for testing purposes; update functional testing to use this option. The behaviour of 'overwrite' was changed to accomodate the use of encrypted block devices. Change-Id: I9b3f8cd2de412ee96e0139dba4d4abdf998ecaf2 |
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| charmhelpers | ||
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| lib | ||
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| tests | ||
| unit_tests | ||
| .coveragerc | ||
| .gitignore | ||
| .gitreview | ||
| .project | ||
| .pydevproject | ||
| .testr.conf | ||
| actions.yaml | ||
| charm-helpers-hooks.yaml | ||
| charm-helpers-tests.yaml | ||
| config.yaml | ||
| copyright | ||
| hardening.yaml | ||
| icon.svg | ||
| LICENSE | ||
| Makefile | ||
| metadata.yaml | ||
| README.md | ||
| requirements.txt | ||
| revision | ||
| setup.cfg | ||
| test-requirements.txt | ||
| tox.ini | ||
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.