OpenStack Summit Austin
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- Cora Watson
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1 OpenStack Summit Austin
2 Lifecycle management of OpenStack with Ansible Tom Howley, HPE Openstack Summit Austin, April 2016
3 What I hope to cover Our deployment lifecycle Ansible lifecycle operations and verb structure Upgrade How we test this 3
4 Goals of Lifecyle Manager Flexible Cloud Deployment Lifecycle management for Helion OpenStack (HOS) Not just about initial deploy Reconfigure Upgrade/Update (seamless as possible!) Scale-out Extensible Easy to add deployment of new services 4
5 Flexibility in Cloud Deployment 5
6 Classic 3 x Controller Node setup EXTERNAL VM EXTERNAL API GUEST Provider VLANs MGMT hed2 bond0 hed3 hed4 bond0 hed2 hed3 Keystone Nova Glance Cinder Ceilometer MySQL Swift Neutron Swift Monasca Logging RabbitMQ compute root log crash root log nova Volume Group vg1 vg2 PV1 PV2 PV3 PV1 PV2 PV3 3xCore Controller NxCompute 6
7 Service Layout EXTERNAL VM EXTERNAL API GUEST Provider VLANs MGMT hed2 bond0 hed3 hed4 bond0 hed2 hed3 Keystone Nova Glance Cinder Swift Neutron Swift Monasca Logging Ceilometer MySQL RabbitMQ compute root log crash root log nova Volume Group vg1 vg2 PV1 PV2 PV3 PV1 PV2 PV3 3xCore Controller 3xMML 3xMySQL/RMQ NxCompute 7
8 Network Configuration #1: Traffic Separation EXTERNAL VM EXTERNAL API INTERNAL API GUEST Provider VLANs MGMT CONF hed1 hed2 bond0 hed3 hed4 hed1 bond0 hed2 hed3 Keystone Nova Glance Cinder Swift Neutron Swift Monasca Logging Ceilometer MySQL RabbitMQ compute root log crash root log nova Volume Group vg1 vg2 PV1 PV2 PV3 PV1 PV2 PV3 3xCore Controller 3xMML 3xMySQL/RMQ NxCompute 8
9 Network Configuration#2: NIC Mapping, Bonding EXTERNAL VM EXTERNAL API INTERNAL API GUEST Provider VLANs MGMT CONF hed1 hed2 bond0 hed3 hed4 hed1 bond0 hed2 hed1 bond0 hed2 hed1 bond0 hed2 hed3 Keystone Nova Glance Cinder Swift Neutron Swift Monasca Logging Ceilometer MySQL RabbitMQ compute root log crash root log nova Volume Group vg1 vg2 PV1 PV2 PV3 PV1 PV2 PV3 3xCore Controller 3xMML 3xMySQL/RMQ NxCompute 9
10 Disk partition layout EXTERNAL VM EXTERNAL API INTERNAL API GUEST Provider VLANs MGMT CONF hed1 hed2 bond0 hed3 hed4 hed1 bond0 hed2 hed1 bond0 hed2 hed1 bond0 hed2 hed3 Keystone Nova Glance Cinder Swift Neutron Swift Monasca Logging Ceilometer MySQL RabbitMQ compute root log crash root log vertica root mysql rmq root log nova Volume Group Volume Group Volume Group vg1 vg2 PV1 PV2 PV3 PV1 PV2 PV3 PV4 PV1 PV2 PV3 PV1 PV2 PV3 3xCore Controller 3xMML 3xMySQL/RMQ NxCompute 10
11 Deployment Lifecycle + Ansible Structure 11
12 HLM Deployment Lifecycle Dev Env mirrors a customer site 12
13 Cloud Lifecycle Use Cases Deploy once, upgrade/reconfigure many times 1. Initial Deploy 2. Reconfigure 3. Upgrade/Update/Patch/Hotfix 4. Add service to node 5. Add/Remove node 6. Offline/Online node (maintenance) 7. 13
14 Common set of operations across services Lifecycle phases for deployment, operation and maintenance of a cloud Lifecycle Operation Install Service Pre-Upgrade Migrate Resrouces Decluster Input Data Quiesce Configure (Re)Start Wipe Persistent Data Cloud Node Stop Service Maintenance Activities (e.g. Swift ring) Uninstall Post- Upgrade Cluster Status 14
15 Deployment example Deploy Service Install Pre-Upgrade Migrate Resrouces Decluster Input Data Quiesce Configure (Re)Start Wipe Persistent Data Cloud Node Stop Service Maintenance Activities (e.g. Swift ring) Uninstall Post- Upgrade Cluster Status 15
16 Reconfigure example Reconfigure Service Install Pre-Upgrade Migrate Resrouces Decluster Input Data Quiesce Configure (Re)Start Wipe Persistent Data Cloud Node Stop Service Maintenance Activities (e.g. Swift ring) Uninstall Post- Upgrade Cluster Status 16
17 Reconfigure example, a bit simpler Reconfigure Service Install Pre-Upgrade Migrate Resrouces Decluster Input Data Quiesce Configure (Re)Start Wipe Persistent Data Cloud Node Stop Service Maintenance Activities (e.g. Swift ring) Uninstall Post- Upgrade Cluster Status 17
18 Upgrade Example Upgrade Service Install Pre-Upgrade Migrate Resrouces Decluster Input Data Quiesce Configure (Re)Start Wipe Persistent Data Cloud Node Stop Service Maintenance Activities (e.g. Swift ring) Uninstall Post- Upgrade Cluster Status 18
19 How do we map this to Ansible? 1. Lifecycle phase = verb playbook 2. Ansible role per service component (nova-api, nova-scheduler, etc.) 3. Each role consists of verb task files: install, start, configure, etc. 4. High-level deploy/reconfigure/.. playbook per service 5. Single top-level playbook, e.g. hlm-deploy to deploy all services 6. Service teams develop roles according to standard template 7. Service ansible code on separate dedicated git repos 19
20 How do we map this to Ansible? (contd.) Top-level Operation Playbooks <service>-deploy.yml <service>-reconfigure.yml <service>-start.yml <service>-stop.yml Use Standard Role API Service Component Role install.yml configure.yml start.yml stop.yml <service>-upgrade.yml 20
21 How do we map this to Ansible? (contd.) 21
22 Ansible Structure Top-level Operation Playbooks What a cloud admin/operator typically runs percona-deploy.yml rabbitmq-deploy.yml hlm-deploy.yml FND-CLU-deploy.yml FND-AP2-deploy.yml keystone-deploy.yml swift-deploy.yml glance-deploy.yml neutron-deploy.yml percona-upgrade.yml hlm-upgrade.yml hlm-start.yml rabbitmq-upgrade.yml FND-CLU-upgrade.yml hlm-stop.yml 22
23 But what about upgrade? And by the way, upgrade = update/patch/hotfix/ 23
24 Upgrade Flow (e.g ) master git repo ansible site customer changes roles config processor (venv) 9. NOV-API NOV-SCH user config nova swift hlm-deploy.yml hlm-upgrade.yml managed by upgrade jars web content misc repo cloud node cloud node cloud node cloud node 6. cobbler 5. nova cinder venv repo HLM repo (HTTP server) HLM node 4. apt repo 1. Get Update cobbler 3. Update Config Proc 4. Replace Apt Repo 5. Update venvs 6. Update misc repo 7. Move master to (Merge customer changes) 8. Run Config Proc 9. Output Ansible vars 10. hlm-upgrade.yml 24
25 Anatomy of hlm-upgrade.yml Top-level Playbooks 1. Status hlm-status.yml 2. Pre-Upgrade hlm-upgrade-pkg-query.yml _hlm-pre-upgrade.yml 3A. Base OS Upgrade _hlm-upgrade-base.yml 3.Upgrade 4. Post- Upgrade 3B. OS Config Upgrade 3C. Service Upgrade 3D. Verify Packages _osconfig-upgrade.yml _hlm-service-upgrade.yml hlm-upgrade-pkg-verify.yml _hlm-post-upgrade.yml 5.Status hlm-status.yml 25
26 Anatomy of a typical service upgrade playbook nova-upgrade.yml nova-api upgrade play check-pkgs install config start cleanup Check upgraded pkgs + set restart trigger Upgrade deb pkgs + set restart trigger Upgrade service venvs + set restart triggers Write service config files Restart services based on triggers set Remove old (n-2) venvs nova-conductor upgrade play Remaining nova component plays... _hlm-serviceupgrade.yml cinderupgrade.yml Remaining HOS services... 26
27 So what does this look like in practice? Parse my cloud description to generate IPs, passwords, + Ansible vars stack@tom-ccp-c0-m1-mgmt:~/helion/hos/ansible$ ansible-playbook -i hosts/localhost config-processor-run.yml Prep deployment ansible-playbook -i hosts/localhost ready-deployment.yml cd ~/scratch/ansible/next/hos/ansible Deploy my cloud stack@tom-ccp-c0-m1-mgmt:~/scratch/ansible/next/hos/ansible$ ansible-playbook -i hosts/verb_hosts site.yml cd ~/scratch/ansible/next/hos/ansible 27
28 Upgrade looks very similar After my deployer is updated, run Config Processor ansible-playbook -i hosts/localhost config-processor-run.yml Prep deployment ansible-playbook -i hosts/localhost ready-deployment.yml cd ~/scratch/ansible/next/hos/ansible Upgrade my cloud ansible-playbook -i hosts/verb_hosts hlm-upgrade.yml cd ~/scratch/ansible/next/hos/ansible 28
29 And other lifecycle operations? Stopping services on a node stack@tom-ccp-c0-m1-mgmt:~/scratch/ansible/next/hos/ansible$ ansible-playbook -i hosts/verb_hosts hlm-stop.yml --limit tom-ccp-c1-m2 And bringing them back stack@tom-ccp-c0-m1-mgmt:~/scratch/ansible/next/hos/ansible$ ansible-playbook -i hosts/verb_hosts hlm-start.yml --limit tom-ccp-c1-m2 29
30 How do we test all of this? 30
31 Continuous Integration Testing Test against various cloud topologies 31
32 Continuous Integration Testing Test against various cloud topologies 32
33 Continuous Integration Testing And even upgrade! 33
34 To Finish We aim to deploy clouds of many shapes and sizes It s all about the full Lifecycle, not just the first-time deploy Adopt standard Ansible API for re-use/consistency Next Steps Mitaka upgrade Deploying multiple regions Adding third-party services or drivers on top of HOS 34
35 Thank you Check out our src at: 35
36 Extra Slides 36
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