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=== Building ===
=== Building ===
To prepare a new release
of the Debian package for Scap, the '''Release Engineering Team ''' needs to follow the steps in [https:// gerrit.wikimedia.org/ r/ plugins/ gitiles/mediawiki/tools/ scap/ +/master/RELEASE.md RELEASE.md] (in the Scap git repository) , and then the '''SRE team''' needs to build and deploy the package, which are listed below.
To prepare a new release for Scap, the Release Engineering Team needs to follow the steps in [https://.wikimedia.org//////master/RELEASE.md RELEASE.md] (in the Scap git repository)
The Debian package for scap can be built with <code>git-buildpackage</code>. More specifically: for production the standard procedure is to have a Debian source package built on the <tt>package_builder</tt> machine.
git clone < nowiki> https:// gerrit. wikimedia. org/ r/ mediawiki/ tools/ scap</ nowiki>
V=4. 0. 0 # Change value as appropriate
git checkout -b $V $V
WIKIMEDIA=yes gbp buildpackage -sa -us -uc --git-pbuilder --git-no-pbuilder-autoconf --git-dist=buster --git-debian-branch=$V
Uploading to apt repos ===
to to the . : <>scap ---..'
The resulting package will be in <tt>/var/cache/pbuilder/result/stretch-amd64/</tt> and needs to be uploaded to the apt repo (e.g. from <tt>apt1001.wikimedia. org</tt>)
to the . the , to the '''<code>scap </code>''' all are ..
rsync -vaz deneb.codfw.wmnet: :pbuilder-result/$DIST-amd64/*scap* deb/
sudo -i reprepro --ignore=wrongdistribution include $DIST-wikimedia $(pwd)/deb/scap_< VERSION> _amd64.changes
# scap is compatible as- is with stretch and buster, just copy the package there
sudo - i reprepro copy stretch- wikimedia $DIST-wikimedia scap
If you get errors about a missing GPG key and therefore not exporting indices you need to import the right key like described on [[Reprepro#Adding_a_new_external_repository]].
If signing still fails after you imported the key you need to ensure it looks for them in the right home dir, see [[Reprepro#If_signing_fails]].
If this already happened and you can' t get it to export indices by repeating the "include" command you can work around it by copying it back from another distro (reprepro copy stretch-wikimedia buster-wikimedia scap).
Not having exported indices will manifest as "reprepro ls shows the right version but it is not found on a client even after running apt-get update".
Roll out to production ===
You will then need to use [[Software_deployment#Deploying_a_software_update_fleet-wide_using_debdeploy_and_debmonitor|Debdeploy]] to deploy the new package in production.
* If you just uploaded the package, use cumin to run <code>apt-get update</code> on the hosts or wait until puppet will do it automatically
*Start by deploying to <code>mw-canary</code>, <code>mw-jobrunner-canary</code>, <code>parsoid-canary</code> (cumin aliases), then login to '''<code>mwdebug*</code>''' servers and check there if a '''<code>scap pull</code>''' still works.
* Later or the next day you can rollout to <code>all </code>.
=== Resources ===
There are Debian [https://www. debian. org/doc/debian-policy/ch-controlfields.html#s-f-Standards-Version Versioning guidelines]
This page is documentation for releasing a new version of Scap to Wikimedia Production.
To prepare a new release for Scap, the Release Engineering Team needs to follow the steps in RELEASE.md (in the Scap git repository)
Roll out to production
Performed by a member of the Release Engineering Team:
- Make sure you select a time window where no deployments are happening
- On the main deployment server (deploy1002.eqiad.wmnet at the time of writing), run
scap install-world. This will select for installation the latest available version tag from the git repo and prompt you for confirmation.
- Log into
mwdebug* servers and check there if a
scap pull still works
- Check if scap still works for the scap3 code path, and on stretch. You will need to run a test deployment to test environment. Run the following from the main deployment server:
cd /srv/deployment/restbase/deploy/; scap deploy --environment dev-cluster
canary deploy successful. Continue? [y]es/[n]o/[c]ontinue all groups: n
Rollback all deployed groups? [Y/n]: Y
In case a rollback is necessary, it is possible to pass a previous version tag to the install command. For example:
scap install-world --version 4.9.3
Target host bootstrapping
Hosts added to the list of targets should be automatically primed with the latest deployed scap version. But if the automated process failed for a host for whatever reason, it is possible to trigger it manually from the main deployment server with:
scap install-world --batch This will ensure all hosts are in sync with the version staged in the deployment server (i.e. the last deployed scap version)