. display in 68x24 .. display in 88x24 .. pygments yaml? (only file breaks (---) tinted) .. slide on high level v3 changes .. slide on nodepool .. transition:: dissolve :duration: 0.4 Test Slide ========== .. hidetitle:: .. ansi:: images/testslide.ans Preshow ======= .. hidetitle:: .. ansi:: images/cursor.ans images/cursor2.ans Zuul ==== .. hidetitle:: .. ansi:: images/title.ans Red Hat ======= .. hidetitle:: .. container:: handout i work for .. ansi:: images/redhat.ans OpenStack ========= .. hidetitle:: .. ansi:: images/openstack.ans OpenStack Infra =============== :: "most insane CI infrastructure I've ever been a part of" -- Alex Gaynor "OpenStack Infra are like the SpaceX of CI" -- Emily Dunham Zuul ==== .. hidetitle:: .. ansi:: images/zuul.ans Ansible ======= .. hidetitle:: .. ansi:: images/ansible.ans Presentation Checklist ====================== :: [X] Logos Spoilers ======== * What Zuul does * multiple repositories * integrated deliverable * gated commits * open tooling * nobody is special * testing like deployment OpenStack Is ============ * Federated * Distributed * Large * Open * Not Alone Federated ========= * Hundreds of involved companies * No 'main' company * "Decisions are made by those who show up" * Union of priorities/use cases Impact of being Federated ========================= * No company can appoint people to positions in the project * The project cannot fire anyone * Variable background of contributors * Heavy reliance on consensus Distributed =========== * There is no office * Contributor base is global * Multitude of contributor backgrounds Impact of being Distributed =========================== * Tooling must empower all contributors, regardless of background, skill level or cultural context * Heavy preference for text-based communication * Cannot assume US-centric needs or solutions Large numbers of ================ * Contributors (\~2k in any given 6 month period) * Changes * Code Repositories (1955 as of this morning) Not Bragging About Scale ======================== OpenStack Scale Comparison ========================== * 2KJPH (2,000 jobs per hour) * Build Nodes from 13 Regions of 5 Public and 2 Private OpenStack Clouds * Rackspace, Internap, OVH, Vexxhost, CityCloud and Linaro, Limestone * 10,000 changes merged per month OpenStack Scale Comparison ========================== * 2KJPH (2,000 jobs per hour) * Build Nodes from 13 Regions of 5 Public and 2 Private OpenStack Clouds * Rackspace, Internap, OVH, Vexxhost, CityCloud and Linaro, Limestone * 10,000 changes merged per month * By comparison, our friends at the amazing project Ansible received 13,000 changes and had merged 8,000 of them in its first 4 years. Four Opens ========== * Open Source (we don't hold back Enterprise features, we don't cripple things) * Open Design (design process open to all, decisions are not made inside company doors) * Open Development (public source code, public code review, all code is reviewed and gated) * Open Community (lazy consensus, democratic leadership from participants, public logged meetings in IRC, public archived mailing lists) We're Not Alone =============== * Dependencies (libvirt/kvm/xen, mysql/pg, rabbit, python/javascript, ceph/gluster, ansible/salt/puppet/chef, ovs/odl) * Adjacencies (kubernetes, ansible, terraform, opnfv, spinnaker) * Vendors (plugins, products, services, distros) Developer Process In a Nutshell =============================== * Code Review - nobody has direct commit/push access * 3rd-Party CI for vendors * Gated Commits OpenStack Developer Workflow ============================ .. container:: handout * Who has submitted a patch? * Who wants to? * (Who is here because the name of this talk is weird?) :: Hack Review Test ========= ========== ========== push approve +-------------+ +-------------+ | | | | +------+--+ +--v----+--+ +--v-------+ | | | | | | | $EDITOR | | Gerrit | | Zuul | | | | | | | +------^--+ +--+----^--+ +--+-------+ | | | | +-------------+ +-------------+ clone merge Gerrit ====== .. hidetitle:: .. container:: handout explain patch upload, zuul runs, test results displayed in gerrit this is all the interface to zuul users need to see switch to actual gertty screenshot also show zuul status page but zuul is doing a lot of work behind the scenes, and if you look closer, this is what you see .. ansi:: images/color-gertty.ans Zuul Architecture ================= .. ansi:: images/architecture.ans Presentation Checklist ====================== :: [x] Logos [x] Architecture diagram Nodepool ======== * A separate program that works very closely with *Zuul* * Builds images daily and uploads to clouds * Creates and destroys (at least) a vm for every job (Remember that 2,000 jobs per hour number?) Zuul is not New =============== * Has been in Production for OpenStack for Six Years * Zuul v3 first release where not-OpenStack is first-class use case * Zuul is now a top-level effort of OpenStack Foundation Not just for OpenStack ====================== * Zuul is in production for OpenStack (in OpenStack VMs) Also running at: * BMW (control plane in OpenShift) * Easystack * GoDaddy (control plane in Kubernetes) * OpenContrail * OpenLab * Red Hat * others ... Zuul in a nutshell ================== * Listens for code events * Prepares appropriate job config and git repo states * Allocates nodes for test jobs * Pushes git repo states to nodes * Runs user-defined Ansible playbooks * Collects/reports results * Potentially merges change All in Service of Gating ======================== Gating ====== .. cowsay:: Every change proposed for a repository is tested before it merges. Co-gating ========= .. cowsay:: Changes to a set of repositories merge monotonically such that each change is tested with the current state of all the other related repositories before it merges. Parallel Co-gating ================== .. cowsay:: Changes are serialized such that each change is tested with all of the changes ahead of it to satisfy the co-gating requirement while being able to run tests for multiple changes simultaneously. Presentation Checklist ====================== :: [x] Logos [x] Architecture diagram [x] Cows Zuul Simulation =============== .. transition:: pan .. container:: handout * todo .. ansi:: images/zsim-00.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-01.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-02.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-03.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-04.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-05.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-06.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-07.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-08.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-09.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-10.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-11.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-12.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-13.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-14.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-15.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-16.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-17.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-18.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-19.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-20.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-21.ans Zuul Simulation =============== .. transition:: cut .. container:: handout * todo .. ansi:: images/zsim-22.ans Cross-Project Dependencies ========================== Testing or gating dependencies manually specified by developers .. container:: progressive * shade https://review.openstack.org/513913 Add unittest tips jobs * os-client-config https://review.openstack.org/513915 Add shade-tox-tips jobs Depends-On: https://review.openstack.org/513913 * os-client-config https://review.openstack.org/513751 Added nat_source flag for networks Depends-On: https://review.openstack.org/513915 * shade https://review.openstack.org/51391 Add support for configured NAT source variable Depends-On: https://review.openstack.org/513751 Live Configuration Changes ========================== .. container:: handout Zuul is a distributed system, with a distributed configuration. .. code:: yaml - tenant: name: openstack source: gerrit: config-repos: - openstack-infra/project-config project-repos: - openstack/nova - openstack/keystone - openstack-infra/devstack-gate Zuul Startup ============ * Read config file Zuul Startup ============ * Read config file * Ask mergers for branches of each repo .. ansi:: images/startup1.ans Zuul Startup ============ * Read config file * Ask mergers for branches of each repo * Ask mergers for .zuul.yaml for each branch of each repo .. ansi:: images/startup2.ans When .zuul.yaml Changes ======================= .. container:: progressive * Zuul looks for changes to .zuul.yaml * Asks mergers for updated content * Splices into configuration used for that change * Works with cross-repo dependencies ("This change depends on a change to the job definition") How do you use this thing? ========================== .. transition:: tilt .. hidetitle:: .. figlet:: Configuration Pipelines ========= * A process definition that connects git repositories, jobs, and reporting mechanisms. * A context to fix a set of jobs to each project. Check Pipeline ============== .. code:: yaml - pipeline: name: check manager: independent source: gerrit trigger: gerrit: - event: patchset-created - event: change-restored success: gerrit: verified: 1 Gate Pipeline ============= .. code:: yaml - pipeline: name: gate manager: dependent source: gerrit trigger: gerrit: - event: comment-added approval: - workflow: 1 success: gerrit: verified: 2 submit: true Jobs ==== * Jobs run on nodes from nodepool (static or dynamic) * Metadata defined in Zuul's configuration * Execution content in Ansible * Jobs may be defined centrally or in the repo being tested * Jobs have contextual variants that simplify configuration Job === .. code:: yaml - job: name: base parent: null description: | The base job for Zuul. timeout: 1800 nodeset: nodes: - name: primary label: centos-7 pre-run: playbooks/base/pre.yaml post-run: - playbooks/base/post-ssh.yaml - playbooks/base/post-logs.yaml secrets: - site_logs Simple Job ========== .. code:: yaml - job: name: tox pre-run: playbooks/setup-tox.yaml run: playbooks/tox.yaml post-run: playbooks/fetch-tox-output.yaml Simple Job Inheritance ====================== .. code:: yaml - job: name: tox-py36 parent: tox vars: tox_envlist: py36 Inheritance Works Like An Onion =============================== * pre-run playbooks run in order of inheritance * run playbook of job runs * post-run playbooks run in reverse order of inheritance * If pre-run playbooks fail, job is re-tried * All post-run playbooks run - as far as pre-run playbooks got Inheritance Example =================== For tox-py36 job * base pre-run playbooks/base/pre.yaml * tox pre-run playbooks/setup-tox.yaml * tox run playbooks/tox.yaml * tox post-run playbooks/fetch-tox-output.yaml * base post-run playbooks/base/post-ssh.yaml * base post-run playbooks/base/post-logs.yaml Simple Job Variant ================== .. code:: yaml - job: name: tox-py27 branches: stable/mitaka nodeset: - name: ubuntu-trusty label: ubuntu-trusty Nodesets for Multi-node Jobs ============================ .. code:: yaml - nodeset: name: ceph-cluster nodes: - name: controller label: centos-7 - name: compute1 label: fedora-28 - name: compute2 label: fedora-28 groups: - name: ceph-osd nodes: - controller - name: ceph-monitor nodes: - controller - compute1 - compute2 Multi-node Job ============== * nodesets are provided to Ansible for jobs in inventory .. code:: yaml - job: name: ceph-multinode nodeset: ceph-cluster run: playbooks/install-ceph.yaml Multi-node Ceph Job Content =========================== .. code:: yaml - hosts: all roles: - install-ceph - hosts: ceph-osd roles: - start-ceph-osd - hosts: ceph-monitor roles: - start-ceph-monitor - hosts: all roles: - do-something-interesting Projects ======== * Projects are git repositories * Specify a set of jobs for each pipeline * golang git repo naming as been adopted: :: zuul@ubuntu-xenial:~$ find /home/zuul/src -mindepth 3 -maxdepth 3 -type d /home/zuul/src/git.openstack.org/openstack-infra/shade /home/zuul/src/git.openstack.org/openstack/keystoneauth /home/zuul/src/git.openstack.org/openstack/os-client-config /home/zuul/src/github.com/ansible/ansible Project Config ============== * Specify a set of jobs for each pipeline .. code:: yaml - project: check: jobs: - openstack-tox-py27 - openstack-tox-py35 - openstack-tox-docs gate: jobs: - openstack-tox-py27 - openstack-tox-py35 - openstack-tox-docs Project with Local Variant ========================== .. code:: yaml - project: check: jobs: - openstack-tox-py27 - openstack-tox-py35 - openstack-tox-py36: voting: false - openstack-tox-docs gate: jobs: - openstack-tox-py27 - openstack-tox-py35 - openstack-tox-docs Project with More Local Variants ================================ .. code:: yaml - project: check: jobs: - openstack-tox-py27 - openstack-tox-py35 - openstack-tox-py36: voting: false - openstack-tox-docs: files: '^docs/.*$' Project with Many Local Variants ================================ .. code:: yaml - project: check: jobs: - openstack-tox-py27: nodeset: - name: centos-7 label: centos-7 - openstack-tox-py27: branches: stable/newton nodeset: - name: ubuntu-trusty label: ubuntu-trusty - openstack-tox-py35 - openstack-tox-py36: voting: false - openstack-tox-docs: files: '^docs/.*$' Project With Central and Local Config ===================================== .. code:: yaml # In git.openstack.org/openstack-infra/project-config: - project: name: openstack/nova templates: - openstack-tox-jobs .. code:: yaml # In git.openstack.org/openstack/nova/.zuul.yaml: - project: check: - nova-placement-functional-devstack Project with Job Dependencies ============================= .. code:: yaml - project: release: jobs: - build-artifacts - upload-tarball: dependencies: build-artifacts - upload-pypi: dependencies: build-artifacts - notify-mirror: dependencies: - upload-tarball - upload-pypi Playbooks ========= * Jobs run playbooks * Playbooks may be defined centrally or in the repo being tested * Playbooks can use roles from current or other Zuul repos or Galaxy * Playbooks are not allowed to execute content on 'localhost' devstack-tempest Run Playbook ============================= .. code:: yaml # Changes that run through devstack-tempest are likely to have an impact on # the devstack part of the job, so we keep devstack in the main play to # avoid zuul retrying on legitimate failures. - hosts: all roles: - run-devstack # We run tests only on one node, regardless how many nodes are in the system - hosts: tempest roles: - setup-tempest-run-dir - setup-tempest-data-dir - acl-devstack-files - run-tempest Simple Shell Playbook ===================== .. code:: yaml hosts: controller roles: - shell: | cd {{ zuul.project.src_dir }} ./run_tests.sh Test Like Production ==================== If you use Ansible for deployment, your test and deployment processes and playbooks are the same What if you don't use Ansible? ============================== OpenStack Infra Control Plane uses Puppet (for now) =================================================== .. code:: yaml # In git.openstack.org/openstack-infra/project-config/roles/legacy-install-afs-with-puppet/tasks/main.yaml - name: Install puppet shell: ./install_puppet.sh args: chdir: "{{ ansible_user_dir }}/src/git.openstack.org/openstack-infra/system-config" environment: # Skip setting up pip, our images have already done this. SETUP_PIP: "false" become: yes - name: Copy manifest copy: src: manifest.pp dest: "{{ ansible_user_dir }}/manifest.pp" - name: Run puppet puppet: manifest: "{{ ansible_user_dir }}/manifest.pp" become: yes Secrets ======= * Inspired by Kubernetes Secrets API * Projects can add named encrypted secrets to their .zuul.yaml file * Jobs can request to use secrets by name * Jobs using secrets are not reconfigured speculatively * Secrets can only be used by the same project they are defined in * Public key per project: ``{{ zuul_url }}/{{ tenant }}/{{ project }}.pub`` :: GET https://zuul.openstack.org/openstack-infra/shade.pub Secret Example (note, no admins had to enable this) =================================================== .. code:: yaml # In git.openstack.org/openstack/loci/.zuul.yaml: - secret: name: loci_docker_login data: user: loci-username password: !encrypted/pkcs1-oaep - gUEX4eY3JAk/Xt7Evmf/hF7xr6HpNRXTibZjrKTbmI4QYHlzEBrBbHey27Pt/eYvKKeKw hk8MDQ4rNX7ZK1v+CKTilUfOf4AkKYbe6JFDd4z+zIZ2PAA7ZedO5FY/OnqrG7nhLvQHE 5nQrYwmxRp4O8eU5qG1dSrM9X+bzri8UnsI7URjqmEsIvlUqtybQKB9qQXT4d6mOeaKGE 5h6Ydkb9Zdi4Qh+GpCGDYwHZKu1mBgVK5M1G6NFMy1DYz+4NJNkTRe9J+0TmWhQ/KZSqo 4ck0x7Tb0Nr7hQzV8SxlwkaCTLDzvbiqmsJPLmzXY2jry6QsaRCpthS01vnj47itoZ/7p taH9CoJ0Gl7AkaxsrDSVjWSjatTQpsy1ub2fuzWHH4ASJFCiu83Lb2xwYts++r8ZSn+mA hbEs0GzPI6dIWg0u7aUsRWMOB4A+6t2IOJibVYwmwkG8TjHRXxVCLH5sY+i3MR+NicR9T IZFdY/AyH6vt5uHLQDU35+5n91pUG3F2lyiY5aeMOvBL05p27GTMuixR5ZoHcvSoHHtCq 7Wnk21iHqmv/UnEzqUfXZOque9YP386RBWkshrHd0x3OHUfBK/WrpivxvIGBzGwMr2qAj /AhJsfDXKBBbhGOGk1u5oBLjeC4SRnAcIVh1+RWzR4/cAhOuy2EcbzxaGb6VTM= Secret Example ============== .. code:: yaml # In git.openstack.org/openstack/loci/.zuul.yaml: - job: name: publish-loci-cinder parent: loci-cinder post-run: playbooks/push secrets: - loci_docker_login # In git.openstack.org/openstack/loci/playbooks/push.yaml: - hosts: all tasks: - include_vars: vars.yaml - name: Push project to DockerHub block: - command: docker login -u {{ loci_docker_login.user }} -p {{ loci_docker_login.password }} no_log: True - command: docker push openstackloci/{{ project }}:{{ branch }}-{{ item.name }} with_items: "{{ distros }}" Important Links =============== * https://zuul-ci.org/ * https://git.zuul-ci.org/cgit/zuul * https://zuul-ci.org/docs/zuul * https://zuul-ci.org/docs/zuul-jobs/ * https://docs.openstack.org/infra/openstack-zuul-jobs/ * freenode:#zuul Questions ========= .. ansi:: images/questions.ans Presentty ========= .. hidetitle:: .. transition:: pan .. figlet:: Presentty * Console presentations written in reStructuredText * Cross-fade, pan, tilt, cut transitions * Figlet, cowsay! * https://pypi.python.org/pypi/presentty