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ToDo for jenkins.debian.net
===========================
:Author:           Holger Levsen
:Authorinitials:   holger
:EMail:            holger@layer-acht.org
:Status:           working, in progress
:lang:             en
:Doctype:          article
:Licence:	   GPLv2

== About jenkins.debian.net

See link:https://jenkins.debian.net/userContent/about.html["about jenkins.debian.net"] for a general description of the setup. Below is the current TODO list, which is long and probably incomplete too. The links:https://jenkins.debian.net/userContent/contributing.html[the preferred form of contributions] are patches via pull requests.

== Fix user submitted bugs

* There are  link:https://bugs.debian.org/cgi-bin/pkgreport.cgi?tag=jenkins;users=qa.debian.org%40packages.debian.org["bugs filed against the pseudopackage 'qa.debian.org' with usertag 'jenkins'"] in the BTS which would be nice to be fixed soon, as some people actually care.

== General ToDo

* replace amd64 in scripts with $HOSTARCH
* extend /etc/rc.local to do cleanup of lockfiles
* explain in README how to write jobs, eg which pathes are on tmpfs
* fix apache ssl configuration as hinted by eg https://sslcheck.globalsign.com/en/sslcheck?host=jenkins.debian.net#78.137.96.196

=== proper backup

* gpg encrypted to some keys
* run on alioth or paradis
* '/var/lib/jenkins/jobs' (the results - the configs are in .git)
* '/var/lib/munin'
* '/var/log'
* '/root/' (contains etckeeper.git)
* '/var/lib/jenkins/reproducible.db' (is backed up manually)
* '/srv/jenkins.debian.net-scm-sync.git' (is backed up manually)
* '/var/lib/jenkins/plugins/*.jpi' (can be derived from jdn-scm-sync.git)
* '/srv/jenkins.debian.net-scm-sync.git'
* '/etc/.git' and '/etc'
* postpone til we run on .debian.org?

=== TODO for testing stretch

Most jobs have been converted, a few are left to do:

* add g-i tests for stretch
* add stretch live-builds
* do lvc for stretch too
* mention stretch in README where appropriate

=== move this setup to jenkins.d.o

The plan is to run a jenkins.d.o host, which is maintained by DSA, but we are maintaining jenkins on it (so we can install any plugins we like etc). then we also setup several jenkins slaves, probably/maybe also maintained by DSA (so we get them into their munin), but on which we can use sudo as we need it. (or maybe not dsa-maintained slaves, so that we can use sudo as we need, for the price of not being in DSAs munin.)

==== next steps for jenkins.d.o migration

* h01ger: sit down with weasel at cccamp or debconf and document current state and discuss next steps
** probably do (at least) the 2nd step at debconf so others can participate
* old plan:
** weasel/h01ger: install jenkins.deb from jenkins-ci.org
*** also create jenkins users in jenkins (KISS)
** h01ger: get slaves: wishlist for starting: 3 slaves, 8 cores, 32gb ram, 150gb hd space if we dont need squid3 on them, 200gb if we do.
*** install slaves - how (to automate)?
** install jenkins-job-builder "somehow", currently "only" a package from fil exists (but needs build-depends not yet even in sid atm)
** update DNS to point jenkins.d.o to jerea.d.o
*** the existing jenkins.d.o host needs to be renamed to something else (thats "just work" to do but not a major obstacle)

==== unsorted notes for jenkins.d.o migration

* sudoers.d/jenkins:
** not suitable for jenkins.d.o, thus we will run all tests on slaves, where DSA doesnt care what we do
* livescreenshot plugin (we use a patched version) is ok:
** jenkins maintenance probably is best done by jenkins users (as opposed to DSA) so it's up to us what plugins we install
* munin monitoring of the slaves
** DSA munin configuration is auto generated by puppet, so the slaves should become .d.o hosts too, to be included
** or install another munin instance, just to monitor the slaves, on jenkins itself
* chroot jobs should use real schroot sessions, and not just use schroot as poor chroot(8) replacement. some links:
** https://anonscm.debian.org/cgit/mirror/dsa-puppet.git/tree/modules/schroot
** https://anonscm.debian.org/cgit/mirror/dsa-puppet.git/tree/modules/porterbox/files/dd-schroot-cmd
** https://gitweb.torproject.org/project/jenkins/tools.git/tree/slaves/linux/build-wrapper

=== To be done once jenkins.d.n runs jessie

* replace with bin/setsid.py workaround with setsid from the util-linux package from jessie
* bin/g-i-installation: use lvcreate without --virtualsize
* check if the sudo workaround in bin/g-i-installation is still needed: 'guestmount -o uid=$(id -u) -o gid=$(id -g)' would be nicer, but it doesnt work: as root, the files seem to belong to jenkins, but as jenkins they cannot be accessed.
* install botch from jessie-backports once its available (and remove botch from the reproducible-unstable schroot)

=== To be done once bugs are fixed

* link:https://bugs.debian.org/767260[#767260] workaround in bin/d-i_build.sh (console-setup doesn't support parallel build)
* link:https://bugs.debian.org/767032[#767032] manual fix in etc/munin/plugins/munin_stats
* link:https://bugs.debian.org/767100[#767100] work in progress in etc/munin/plugins/cpu
* link:https://bugs.debian.org/767018[#767018] work in progress in etc/munin/plugins/iostat_ios
* link:https://bugs.debian.org/774685[#774685] workaround in bin/reproducible_create_meta_pkg_sets.sh

=== jenkins-job-builder related

* use fil's package: http://ftp.hands.com/hands-deb/pool/main/j/jenkins-job-builder/jenkins-job-builder_1.2.0~git-0~1.gbp1ae299.dsc
** needs at least some of the stuff on fil's j.d.n.git/needs-jjb-1.2.0 branch to work with that

==== old jenkins-job-builder TODO, mostly (all?) obsolete thanks to fil's work:

* use jessie version plus h01ger's patches from kali
* change of syntax:
----
properties:
  - priority-sorter:
      priority: 150
----
* this seems to be helpful: http://en.wikipedia.org/wiki/YAML#References (pyyaml which jenkins-job-builder uses supports them)
* cleanup h01ger's patches (eg add documentation) and send pull requests on github:
** publisher:logparse
** publisher:htmlpublisher
** svn:scm upstreamed at https://review.openstack.org/#/c/192095/
** wrappers:live-screenshot upstreamed at https://review.openstack.org/#/c/191708/
** image-gallery: https://review.openstack.org/#/c/175747/ superseeds h01gers patch: https://review.openstack.org/#/c/191950/
** sidebar: upstreamed at https://review.openstack.org/#/c/191585/

=== livescreenshot plugin

* publish forked livescreenshot plugin and send pull request for h01ger's bugfix
** see ssh://git.debian.org/git/users/holger/livescreenshot-plugin.git and 0b407b70025 there

== lvc, work in progress, just started

* put this on debian isos too: config/chroot_local-includes/lib/live/config/9999-autotest

* add another (smaller) test: download+run torbrowser daily

* re-read the docs! 
** http://live.debian.net/manual/stable/html/live-manual.en.html#321

* generate feature files from templates? to cope with sub-products?
-> no. detect desktop type and set variables accordingly
-> simpler: pass an environment variable with the type

* get iso
* tables for looping through features: see tails/iuk.git/features/download_target_file/Download_Target_File.feature

* to debug cucumber: --verbose --backtrace --expand

* drop / remove
* can probably go: dhcp.rb firewall_leaks.rb dhcp.feature firewall_leaks.feature
* more occurances of "the computer boots Tails"
* @source (only keep product tests)

* disabled stuff in common_steps.rb
** #if @vm.execute("service tor status").success?

* "I set sudo password" not needed for debianlive nor debian(edu):
** #@screen.wait("TailsGreeterAdminPassword.png", 20)

* $misc_files_dir needed?
* def sort_isos_by_creation_date
  Dir.glob("#{Dir.pwd}/*.iso").sort_by {|f| tails_iso_creation_date(f)}
  -> useless for us, purpose is to automatically select the latest iso if none is given
* search case-in-sensitive for tails+tor+amnesia

* put in update_jdn.sh:
----
    addgroup tcpdump
    dpkg-statoverride --update --add root tcpdump 754 /usr/sbin/tcpdump
    setcap CAP_NET_RAW+eip /usr/sbin/tcpdump
    adduser $USER tcpdump
    adduser $USER libvirt
    adduser $USER libvirt-qemu
----

== Improve existing tests

=== reproducible

* higher prio:
** fix https://jenkins.debian.net/munin/debian.net/jenkins.debian.net/jenkins_builds.html which is broken since jessie upgrade
** repo-comparison: check for binaries without source

* lesser prio
** document (in README) the multihost setup
** the setup pbuilder+schroot scripts should detect network problems such as "Bad gateway" and sleep 5m and retry once
** more graphs:
*** graph average build duration by day
*** graph packages in testing+unstable which need to be fixed
** reproducible_create_meta_pkg_sets uses schroot created by dpkg_setup_schroot_jessie job (outside of reproducible job space...)
** "fork" etc/schroot/default into etc/schroot/reproducible
** move "untested" field in stats table too? (as in csv output...)
** new page: packages which are orphaned but have a reproducible usertagged patch
** a reproducible_log_grep_by_sql.(py|sh) would be nice, to only grep in packages with a certain status (build in the last X days)
** replace submit form by one without javascript (maybe with more url rewriting)
** when a package is automatically rescheduled because of the mirror was updated between the two tests, there will be three rbuild logs in one. thats confusing, the first one should be dropped.
** adopt usertag script from pkg-apparmor to notify us about new usertagged bugs automatically

* notes related
** #786396: classify issue by "toolchain" or "package" fix needed: show bugs which block a bug
** new page with annoted packages without categorized issues
** new page with packages that have notes with comments (which are often useful / contain solutions / low-hanging fruits for newcomers)
** new page with notes that doesnt make sense: a.) packages which are reproducible but should not, packages that build but shouldn't, etc.
*** aint that covered by reproducible_breakages.py already? no.

* pkg sets related:
** fix essential set: currently it only has the ones explicitly marked Essential:yes; they and their dependencies make up the full "essential closure set" (sometimes also called pseudo-essential)
** replace bin/reproducible_installed_on_debian.org with a proper data provider from DSA, eg https://anonscm.debian.org/cgit/mirror/debian.org.git/plain/debian/control

* missing tests:
** variation in kernel
** variation in date
** prebuilder does (user) group variation like this: https://anonscm.debian.org/cgit/reproducible/misc.git/tree/prebuilder/pbuilderhooks/A02_user
** different cpu type: Opteron_G3  AMD Opteron 23xx (Gen 3 Class Opteron) is the most powerful one that's different to current Opteron_G4
** variation of $TERM and $COLUMN (and maybe $LINES), unset in the first run, set to "linux" and "77" (and maybe "42") in the 2nd run. maybe vary $SHELL too.
*** actually TERM is set to "linux" by default already, COLUMN is unset

* status of remote build nodes for amd64
** profitbricks-build1-amd64 is setup
*** squid needs proper configuration
** profitbricks-build2-amd64 is setup
*** squid needs proper configuration
*** should run in the future: +1d+1m+1y
*** needs to be moved to a different Profitbricks datacenter, to run with a different cpu type

* enable people to upload test packages, to be built in jenkins:
----
  <mapreri> h01ger: another wild future request by me: allowing us to upload something and let jenkins test it. rationale: I sent (another) patch for debian-keyring, to fix a timestamp issue in debian control files (due to not_using_dh-builddeb), but there is also a umask issue. I don't want to bother me to setup the very same things jenkins tests locally (I already did too much in this regards, imho), but really people can't tests everything
  <mapreri> jenkins tests.
  <h01ger> mapreri: please add the feature request to the todo. i'm thinking now that it maybe should just be a jenkins job not integrated into the rp.d.n webui, but... maybe we find a nice way to do it
  <mapreri> h01ger: I'm instead thinking about a repo defining a reproducible-specific suite or something on that line, that integrates well with the current setup. but this is really something wild.
  <h01ger> well, and everybody in debian-keyring from sid can uplood? :)
  <mapreri> that would be wonderful.
----
* support for arbitrary (soon to be implemented) Debian-PPAs and external repos, by just giving a source URL

==== design for reproducible remote building

* open questions:
** save build-host in build_duration table too? (and change to saving the time of a single build, not both combined)

* reproducible_build.sh behaviour change:
** called without param: behave as always
** called with a single param, "1" or "2": do first or second build (as specified below)
** called with two params: $node1 and $node2 where the build should happen.

* reproducible_build.sh (with two params) will be still always be run on the main node, that is the one holding reproducible.db, so jenkins.d.n atm
* job definitions:
** reproducible_build_amd64_1 runs "reproducible_build.sh profitbricks-build1-amd64 profitbricks-build2-amd64"	# 8 core machines with 32gb ram
** reproducible_build_amd64_2 runs "reproducible_build.sh profitbricks-build1-amd64 profitbricks-build2-amd64"
** reproducible_build_amd64_3 runs "reproducible_build.sh profitbricks-build1-amd64 profitbricks-build2-amd64"
** reproducible_build_amd64_4 runs "reproducible_build.sh profitbricks-build1-amd64 profitbricks-build2-amd64"
** reproducible_build_amd64_5 runs "reproducible_build.sh profitbricks-build1-amd64 profitbricks-build2-amd64"
** reproducible_build_amd64_6 runs "reproducible_build.sh profitbricks-build2-amd64 profitbricks-build1-amd64"
** reproducible_build_amd64_7 runs "reproducible_build.sh profitbricks-build2-amd64 profitbricks-build1-amd64"
** reproducible_build_amd64_8 runs "reproducible_build.sh profitbricks-build2-amd64 profitbricks-build1-amd64"
** reproducible_build_amd64_9 runs "reproducible_build.sh profitbricks-build2-amd64 profitbricks-build1-amd64"
** reproducible_build_amd64_10 runs "reproducible_build.sh profitbricks-build2-amd64 profitbricks-build1-amd64"
** reproducible_build_armhf_1 runs "reproducible_build.sh wbq0-armhf-rb bpi0-armhf-rb"			# wbq0 and cbxi4pro0 are the quad cores
** reproducible_build_armhf_2 runs "reproducible_build.sh wbq0-armhf-rb cbxi4pro0-armhf-rb"		# with 2gb ram and and the other two
** reproducible_build_armhf_3 runs "reproducible_build.sh cbxi4pro0-armhf-rb hb0-armhf-rb.debian.net"	# have dual cores with 1gb ram
** reproducible_build_armhf_4 runs "reproducible_build.sh cbxi4pro0-armhf-rb wbq0-armhf-rb"

* then we have a new script, reproducible_info.sh which just outputs key-value pairs, like "ARCH=armhf", DATETIME="Mo 10. Aug 11:56:22 CEST 2015" and "TZ=UTC" and whatever.
** this script is run on all nodes, but each run is triggered by a single job running on the main node (jenkins atm), so the results can be captured in /srv/reproducible-results/node-information/$NODE and then eg be used by reproducible_html_dashboard.sh to create the table with the differences between 1st and 2nd build...
** /srv/reproducible-results/node-information/$NODE could also be read by reproducible_build.sh to determine the dpkg-architecture a node is captable of building, but I think we also want that info to be encoded in the build job names, so probably there's no need to read it...

* how to build remotely, some terms and remarks:
** main node = the one running reproducible_build.sh with two params, so jenkins.d.n atm
** node = generic term for node1 or node2
** please note the difference between /srv/workspace/reproducible-builds and /srv/workspace/reproducible-results and /srv/workspace/reproducible-builds/$NODE and /srv/workspace/reproducible-builds/pending and whether these are on a node or on the main node.


1. reproducible_build.sh on main node determines what to build,
2. downloads the sources, and put's the sha256sum of the .dsc file into /srv/workspace/reproducible-builds/$NODE/$SUITE/$ARCH/$PKG/$VERSION on the main node
3. throws the source files away
4. scp's /srv/workspace/reproducible-builds/$NODE/$SUITE/$ARCH/$PKG/$VERSION on the node where this should be build 1st
5. runs "ssh $NODE1 /srv/jenkins/bin/reproducible_build.sh 1"
6. this causes a 1st build, which downloads the sources as specified in /srv/workspace/reproducible-builds/$NODE/$SUITE/$ARCH/$PKG/$VERSION and compares the sha256sum and builds it and copies the result to /srv/workspace/reproducible-results/$NODE/$SUITE/$ARCH/$PKG/$VERSION and exits.
7. reproducible_build.sh on the main node then tries to scp the result from $NODE:/srv/workspace/reproducible-results/$NODE...
8. reproducible_build.sh on the main node then triggers the 2nd build as the 1st.
9. voila

* more open questions:
** i believe "reproducible_build.sh 1" should immediatly move /srv/workspace/reproducible-builds/$NODE/$SUITE/$ARCH/$PKG/$VERSION to /srv/workspace/reproducible-builds/pending/$SUITE/$ARCH/$PKG/$VERSION (on the node) so it's only build once and so that we can detect stale builds
** maintenance is general, cleanup of started but interrupted builds...

==== reproducible Debian armhf

* then: include armhf in index_scheduled
** call_apt_update() needs to be moved from _scheduler.py to jobs so its run on all build nodes
* then: armhf building - run the job on jenkins.d.n and build1 on one host and build2 on another and then run debbindiff on jenkins.d.n…
* monitor their temperatures via munin via ssh:
** http://munin-monitoring.org/wiki/Native_ssh
** http://guide.munin-monitoring.org/en/latest/example/transport/ssh.html
* make systems send mail
* change date on 2nd build hosts (and disable systemd-timesyncd)

==== reproducible Debian installation

* see https://wiki.debian.org/ReproducibleInstalls
* add the test (something weekly or so)

==== reproducible coreboot

* add more variations: domain+hostname, uid+gid, USER, UTS namespace
* build the docs?
* also build with payloads. x86 use seabios as default, arm boards dont have a default. grub is another payload. and these: bayou  coreinfo  external  filo  libpayload  nvramcui - and:
** CONFIG_PAYLOAD_NONE=y
** CONFIG_PAYLOAD_ELF is not set
** CONFIG_PAYLOAD_LINUX is not set
** CONFIG_PAYLOAD_SEABIOS is not set
** CONFIG_PAYLOAD_FILO is not set
** CONFIG_PAYLOAD_GRUB2 is not set
** CONFIG_PAYLOAD_TIANOCORE is not set
* libreboot ships images, verify those?
* explain status in plain english

==== reproducible openwrt

* add credit for logo/artwork
* build more archs (http://downloads.openwrt.org/chaos_calmer/15.05-rc1/ lists many to choose from)
* build all packages? (set CONFIG_ALL=y and run 'make defconfig')
** just build some first...
* file dbd bug about unable to inspect these .bin files
* file dbd bug about crashing on certain squashfs files
* explain status in plain english

==== reproducible netbsd

* announce on their list
* explain status in plain english
** MKREPRO is set to "yes"

==== reproducible fedora

* use mock to create a fedora chroot to build in
** http://blog.packagecloud.io/eng/2015/05/11/building-rpm-packages-with-mock/
** http://blog.packagecloud.io/eng/2015/04/20/working-with-source-rpms/
* start with building a single package
* then build the full base system (100-500 packages)

==== reproducible freebsd

* document how the freebsd build VM was set up:
** base 10.1 install following https://www.urbas.eu/freebsd-10-and-profitbricks/
** modified files:
*** /etc/rc.conf
*** /etc/resolv.conf
*** /boot/loader.conf.local
** pkg install screen git vim sudo denyhosts munin-node
** adduser holger
** adduser jenkins (with bash as default shell)
** mkdir -p /srv/reproducible-results
** chown -R jenkins:jenkins /srv/
** ln -s /srv/ /usr/obj/srv
** we build freebsd 10.1 (=released) atm
** we build with sudo too
*** rather not change /usr/obj to be '~jenkins/obj' and build with WITH_INSTALL_AS_USER. also not build in /usr/src. if so, we need to define some variable so we can do so.... but we need a stable path anyway, so whats the point.
*** maybe build as user in /usr/src...
* first build world, later build ports (pkg info...)
* investigate how to use tmpfs on freebsd and build there

==== reproducible...

* openembedded.org!
* Arch? Gentoo?

=== qa.debian.org*

* udd-versionskew: explain jobs in README
* udd-versionskew: also provide arch-relative version numbers in output too

=== d-i_manual*

* d-i_check_jobs.sh: check for removed manuals (but with existing jobs) missing
* svn:trunk/manual/po triggers the full build, should trigger language specific builds.
* svn:trunk/manual is all thats needed, not whole svn:trunk

=== d-i_build*

* d-i_check_jobs.sh: check for removed package (but with existing jobs) missing
* build packages using jenkins-debian-glue and not with the custom scripts used today?
* run scripts/digress/ ?
* bubulle wrote: "Another interesting target would be d-i builds *including non uploaded packages* (something like "d-i from git repositories" images). That would in some way require to create a quite specific image, with all udebs (while netboot only has udebs needed before one gets a working network setup).

=== chroot-installation_*

* use schroot for chroot-installation, stop using plain chroot everywhere
* add alternative tests with aptitude and possible apt
* split etc/schroot/default
* inform debian-devel@l.d.o or -qa@?
* warn about transitional packages installed (on non-upgrades only)
* install all the tasks "instead", thats rather easy nowadays as all task packages are called "task*".
** make sure this includes blends

=== g-i-installation_*

Development of these tests has stopped. In future the 'lvc*' tests should replace them.

These small changes are probably still worth doing anyway:

* g-i: replace '--' with '---' as param delimiter. see #776763 / 5df5b95908 in d-e-c
* download .isos once in central place
** /var/lib/jenkins/jobs/g-i-installation_*/workspace/*iso needs 53GB currently, it could be 30 less
* g-i_presentation: use preseeding files on jenkins.d.n and not hands.com
* turn job-cfg/g-i.yaml into .yaml.py

The following ideas should really only be implemented for the new 'lvc*' tests.... (but are kept here for now)

* pick LANG from predefined list at random - if last build was not successful or unstable fall back to English
** these jobs would not need to do an install, just booting them in rescue mode is probably enough
* for edu mainservers running as servers for workstations etc: "d-i partman-auto/choose_recipe select atomic" to be able to use smaller disk images
** same usecase:  -monitor none -nographic -serial stdio  

== Further ideas...

=== rebuild sid completly on demand

* nthykier wants to be able to rebuild all of sid to test how changes to eg lintian, debhelper, cdbs, gcc affect the archive:
* h01ger> | nthykier: so a.) rebuild everything from sid plus custom repo. b.) option to only rebuild a subset, like all rdepends or all packages build-depending on something
* h01ger> | and c.) only build once, not continously and d.) enable more cores+ram on demand to build faster

=== Test them all

* build packages from all team repos on alioth with jenkins-debian-glue on team request (eg, via a .txt file in a git.repo) for specific branches (which shall also be automated, eg. to be able to only have squeeze+sid branches build, but not all other branches.)

== Debian Packaging related

This setup should come as a Debian source package...

* /usr/sbin/jenkins.debian.net-setup needs to be written
* what update-j.d.n.sh does, needs to be put elsewhere...
* debian/copyright is incorrect about some licenses:
** the profitbricks+debian+jenkins logos
** the preseeding files
** ./feature/ is gpl3

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