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Wikimedia binaries: Difference between revisions

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imported>Chad
(→‎sync-docroot: Lies. It also sync'd ./w. But guess what, it doesn't exist anymore!)
imported>Chad
(→‎All-script: lolwut?)
Line 75: Line 75:
* [[image scalers]]
* [[image scalers]]
* misc other hosts running apache:
* misc other hosts running apache:
** [[search]] servers
** live html snapshot browsers
** live html snapshot browsers
** the [[secure]] server
** ''etc.''
** ''etc.''



Revision as of 17:35, 18 March 2016

The following executable binaries are maintained in version control (operations/puppet:/files/misc/scripts) and copied/synced to servers (such as tin) by puppet into /usr/local/bin.

bin

apache-graceful

Note: this script is NOT in puppet.

Performs the action only on the one server from which the command is ran

apache-graceful-all

Note: this script is in /usr/local/bin/ on tin and in puppet.

This script operates on all servers in the following dsh groups: apaches
  • Runs apache-graceful locally on all apaches.

fatalmonitor

  • Runs a watch command on the apache logs with various exclusion and aggregation filters to monitor current php notices, warnings and errors on the cluster.

sync-apache

This script operates on all servers in the following dsh groups: apaches, image_scalers, snapshot, searchidx
Note: The conf files are outside of /a/common, and as such are not synced by the sync-common-like scripts.
  • syncs /home/wikipedia/conf/httpd to /apache/conf

sync-common

Note: this script is from mediawiki/tools/scap.

Performs the action only on the one server from which the command is ran
  • syncs /srv/mediawiki-staging from a deployment rsync server-> /srv/mediawiki on the local server

sync-dir

Note: this script is from mediawiki/tools/scap.

This is an all-script!
  • for a single directory
  • checks PHP syntax
  • syncs /srv/mediawiki-staging/(some dir) -> /srv/mediawiki

sync-file

Note: this script is from mediawiki/tools/scap.

This is an all-script!
  • for a single file
  • checks PHP syntax
  • syncs /srv/mediawiki-staging/(some file) -> /srv/mediawiki

sync-wikiversions

Note: this script is from mediawiki/tools/scap.

This is an all-script!
  • syncs /srv/mediawiki-staging/wikiversions.{json,cdb} -> /srv/mediawiki

scap

'scap' logo
A diagram of wikimedia 'scap' deployment tool

Note: this script is from mediawiki/tools/scap. Generated documentation is published here

This is an all-script!
"sync-common-all-php"
  • lints PHP files in ./wmf-config, ./multiversion
  • Sync deploy directory (/srv/mediawiki-staging) on localhost with staging area (/srv/mediawiki)
  • for all mediawiki versions currently deployed (usually 2) it:
    • rebuilds localization caches of core and extensions
    • creates json files from localization caches for better rsync performance
  • runs sync-common on rsync slave servers to update /srv/mediawiki
  • runs sync-common on "all" servers to update /srv/mediawiki from nearest rsync slave
  • rebuilds localization caches on "all" servers from json files that were synced by sync-common
  • compiles wikiversions.json to wikiversions.cdb on localhost
  • runs sync-wikiversions

mwgrep

Search for CSS and JavaScript code fragments in MediaWiki namespace pages on all Wikimedia projects (powered by Elasticsearch).

It's located in operations/puppet/files/misc/scripts/mwgrep

All-script

An all-script is a script that operates on mediawiki-installation boxes via ssh. These scripts performs the action on all servers.

The specific servers include:

Examples

sync-apache example

  1. On tin:
  2. (optionally) run:
    sync-apache-simulated
    This just has an "-n" added to the rsync commands. (--dry-run | show what would have been transferred)
  3. If that looks fine, actually sync:
    sync-apache
  4. Connect to a single random "srv" server, confirm the expected change has arrived here, and restart Apache to check your change did not break things.
    1. (how to restart that apache?)
  5. If that also looks fine, restart all Apaches:
    apache-graceful-all

After this you might want to purge a URL from Squid cache. Also see Squids#Purge a given external (non WMF) url.

In most cases this is enough. However if the change involves more than a simple change to redirects, depooling/ repooling may be necessary. Make sure you find out whether this is needed ahead of time.

See also