ansible-role-tripleo-collect-logs

An Ansible role for aggregating logs from TripleO nodes.

Requirements

This role gathers logs and debug information from a target system and collates them in a designated directory, artcl_collect_dir, on the localhost.

Additionally, the role will convert templated bash scripts, created and used by TripleO-Quickstart during deployment, into rST files. These rST files are combined with static rST files and fed into Sphinx to create user friendly post-build-documentation specific to an original deployment.

Finally, the role optionally handles uploading these logs to a rsync server or to an OpenStack Swift object storage. Logs from Swift can be exposed with os-loganalyze.

Role Variables

Collection related

• artcl_collect_list -- A list of files and directories to gather from the target. Directories are collected recursively. Can include joker characters that bash understands. Should be specified as a YaML list, e.g.:

artcl_collect_list:
    - /etc/nova
    - /home/stack/*.log
    - /var/log

• artcl_collect_dir -- A local directory where the logs should be gathered, without a trailing slash.
• artcl_gzip_only: false/true -- When true, gathered files are gzipped one by one in artcl_collect_dir, when false, a tar.gz file will contain all the logs.

Documentation generation related

• artcl_gen_docs: true/false -- If true, the role will use build artifacts and Sphinx and produce user friendly documentation.
• artcl_docs_source_dir -- a local directory that serves as the Sphinx source directory.
• artcl_docs_build_dir -- A local directory that serves as the Sphinx build output directory.
• artcl_create_docs_payload -- Dictionary of lists that direct what and how to construct documentation.
  • included_deployment_scripts -- List of templated bash scripts to be converted to rST files.
  • included_deployment_scripts -- List of static rST files that will be included in the output documentation.
  • table_of_contents -- List that defines the order in which rST files will be laid out in the output documentation.

artcl_create_docs_payload:
  included_deployment_scripts:
    - undercloud-install
    - undercloud-post-install
  included_static_docs:
    - env-setup-virt
  table_of_contents:
    - env-setup-virt
    - undercloud-install
    - undercloud-post-install

Publishing related

• artcl_publish: true/false -- If true, the role will attempt to rsync logs to the target specified by artcl_rsync_url. Uses BUILD_URL, BUILD_TAG vars from the environment (set during a Jenkins job run) and requires the next to variables to be set.
• artcl_use_rsync: false/true -- use rsync to upload the logs
• artcl_rsync_use_daemon: false/true -- use rsync daemon instead of ssh to connect
• artcl_rsync_url -- rsync target for uploading the logs. The localhost needs to have passwordless authentication to the target or the PROVISIONER_KEY Var specificed in the environment.
• artcl_use_swift: false/true -- use swift object storage to publish the logs
• artcl_swift_auth_url -- the OpenStack auth URL for Swift
• artcl_swift_username -- OpenStack username for Swift
• artcl_swift_password -- password for the Swift user
• artcl_swift_tenant_name -- OpenStack tenant name for Swift
• artcl_swift_container -- the name of the Swift container to use, default is logs
• artcl_swift_delete_after -- The number of seconds after which Swift will remove the uploaded objects, the default is 2678400 seconds = 31 days.
• artcl_artifact_url -- a HTTP URL at which the uploaded logs will be accessible after upload.
• artcl_collect_sosreport -- true/false -- If true, create and collect a sosreport for each host.

Example Playbook

---
- name: Gather logs
  hosts: all:!localhost
  roles:
    - tripleo-collect-logs

Templated Bash to rST Conversion Notes

Templated bash scripts used during deployment are converted to rST files during the create-docs portion of the role's call. Shell scripts are fed into an awk script and output as restructured text. The awk script has several simple rules:

1. Only lines between ### ---start_docs and ### ---stop_docs will be parsed.
2. Lines containing # nodoc will be excluded.
3. Lines containing ## :: indicate subsequent lines should be formatted as code blocks
4. Other lines beginning with ## <anything else> will have the prepended ## removed. This is how and where general rST formatting is added.
5. All other lines, including shell comments, will be indented by four spaces.

Enabling sosreport Collection

sosreport is a unified tool for collecting system logs and other debug information. To enable creation of sosreport(s) with this role, create a custom config (you can use centosci-logs.yml as a template) and ensure that artcl_collect_sosreport: true is set.

License

Apache 2.0

Author Information

RDO-CI Team