Evolve or Die: Enterprise Ready OpenStack upgrades with Kubernetes
Post on 16-Apr-2017
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Copyright © 2016 Mirantis, Inc. All rights reserved
www.mirantis.com
Evolve or Die: Enterprise Ready OpenStack Upgrades with Kubernetes
Jakub Pavlik
Copyright © 2016 Mirantis, Inc. All rights reserved
Presentation Agenda
1. OpenStack Evolution2. New Fuel Architecture3. DEMO Scenarios4. Q&A
Live Demos!
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OpenStack Evolution
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OpenStack Evolution steps
Day 1Deploy
Day 2Operate
Day 3Upgrade
Deploying OpenStack is the easy part
Operation, Scaling and Upgrade is the difficult part
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OpenStack Complexity
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Requirements for DevOps
● Treat OpenStack as a set of Applications● Composable, Modular, Immutable● Split applications from infrastructure● Monolithic VMs (Fragile and Vertical)● Containers and Microservices
OpenStack is just another application workload
Copyright © 2016 Mirantis, Inc. All rights reserved
Clearing Naming Confusion
● MCP = Mirantis Cloud Platform: next release of Mirantis distribution, designed to make operations simple. Not just OpenStack, but also includes Kubernetes, Calico and other components...hence MCP
● Fuel: Lifecycle management tool for MCP. We’ll be talking about new Fuel here today.
● Fuel in MCP != Fuel in MOS 9.0: significant architecture refactoring to support Day 2 and Day 3 operations.
MOS? TCP Cloud?
MCP? FUEL?
Etc.
Copyright © 2016 Mirantis, Inc. All rights reserved
Mirantis Cloud Platform Operations-Centric Fabric for BM, VM and Containers
Host Host Host Host Host Host Host Host
Kubernetes
Host Host Host
K8s master K8s minionsBMaaS pool
Ironic
OpenStack Control Plane
OpenStack Computes
K8s workloads
Mon
itorin
g an
d Lo
ggin
g
Bare Metal VMs Containers
Life
cycl
e M
anag
emen
t
Today we’ll go over and demo the new architecture of Fuel lifecycle management tool that we are building for Mirantis Cloud Platform.
Copyright © 2016 Mirantis, Inc. All rights reserved
Fuel Architecture in MCP
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Fuel (Designed as a DevOps Center)
● Artifactory Provides artifact repository for CICD Pipeline
● Web Portal Simple UI for Artifactory, Jenkins, Gerrit
● Gerrit Git repositories with code review
● Jenkins CI/CD Engine● SaltStack To provide
orchestration capability for CICD Pipeline
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Deploy and Manage various clusters
● Builds MCP Components● Deploys MCP Components● Local or Remote MCP
Clusters● Manages MCP clusters with
different setups and components
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OpenStack Small Site Deployment
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Kube Node as OpenStack Controller
● OpenStack components in k8s PODs
● OpenContrail roles in PODs
● Calico as Plugin for k8s
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Kube Node as OpenStack Compute
● Libvirt & nova-compute in k8s POD
● OpenContrail in host OS
● Calico as network plugin for k8s
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Reclass metadata model - “Single source of truth”
● Where clusters/sites are defined● Reclass YAML as primary
method of defining sites● Metadata model allows:
● Hierarchical definition of sites
● Changes at any level of granularity
■ Global■ Site-Type■ Site■ Node
● Single location for all operations
● All changes as code commits● Audit trail
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Lifecycle Workflow - upgrade OpenStack Nova
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DEMO Scenarios
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#1 Deploy OpenStack on Kubernetes
● Deploy OpenStack on preinstalled Kubernetes cluster● 4 HW nodes
● 3 Nodes - Kubernetes Master/Nodes with OpenStack/OpenContrail control services
● 1 Compute● Launch Jenkins Deploy OpenStack pipeline
“ As an infrastructure administrator, I need to provision small site OpenStack deployment.”
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#2 Scale up OpenStack Component
1. Change Metadata model2. Push gerrit review3. Launch Jenkins Deploy OpenStack pipeline
“ As an infrastructure operator, I need to scale up my small deployment to at least 3 replicas.”
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#3 Configuration Change in OpenStack Nova
1. Change Metadata model2. Push gerrit review3. Launch Jenkins Deploy OpenStack pipeline
● Manually run Salt update and k8s rolling update to show what is behind
“ As an infrastructure operator, I need to add or modify the scheduler filters in nova.conf on my site.”
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#4 Upgrade OpenStack Cinder from Mitaka to Newton
“ As an infrastructure administrator, I need to upgrade Cinder component because of new storage features.”
1. Change Metadata model2. Push gerrit review3. Launch Jenkins Deploy OpenStack pipeline
● Manually run Salt update and k8s rolling update to show what is behind
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Q&A
Thank you for your time
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