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Wikimedia binaries

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Revision as of 19:51, 12 August 2016 by imported>BryanDavis (→‎fatalmonitor: point to the correct logs)
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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 hhvm logs with various exclusion and aggregation filters to monitor current php notices, warnings and errors on the cluster. This script lives on fluorine.

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

scap pull

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
  • This action was formerly run as sync-common

scap 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

scap 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

scap 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 sync

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

Note: this script is from mediawiki/tools/scap. Generated documentation is published on doc.wikimedia.org

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 scap pull on co-master servers to update /srv/mediawiki-staging
  • runs scap pull on rsync fanout servers to update /srv/mediawiki
  • runs scap pull on "all" servers to update /srv/mediawiki from nearest rsync slave
  • rebuilds localization caches on "all" servers from json files that were synced by scap pull
  • compiles wikiversions.json to wikiversions.cdb on localhost
  • runs scap sync-wikiversions
bd808@silver:~$ scap say
 ------------------------------------------------
/                                                \
|     S.C.A.P.: someone can always pontificate    |
\                                                /
 ------------------------------------------------
    \
     \
      \
           ___ ____
         ⎛   ⎛ ,----
          \  //==--'
     _//|,.·//==--'    ____________________________
    _OO≣=-  ︶ ᴹw ⎞_§ ______  ___\ ___\ ,\__ \/ __ \
   (∞)_, )  (     |  ______/__  \/ /__ / /_/ / /_/ /
     ¨--¨|| |- (  / ______\____/ \___/ \__^_/  .__/
         ««_/  «_/ jgs/bd808                /_/

mwgrep

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

It's located in operations/puppet/modules/scap/files/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