Openstack Deployment with Kolla-Ansible
Openstack Intro
OpenStack is a open standard cloud computing platform. It is mostly deployed as infrastructure-as-a-service (IaaS) in both public and private clouds where virtual servers and other resources are made available to users. - Wikipedia
As a virtualize platform, it supports multiple hypervisors such as KVM, Xen, VMware, and Hyper-V. Among them, Openstack with KVM stands out as one of the most popular implementations.
Openstack Component in Nuts (Graph)
Architecture of Openstack and KVM
Deployment
Kolla-Ansible
One of the most painful thing of starting to use OpenStack is the inconvenience of the deployment process, which often leads to unknown failures during installation. Kolla-ansible replace the inflexible deployment process with container, which organized by Ansible playbook.
By defining the associated variables in /etc/kolla/global.yml, these templating configuration options will then convert into Kolla’s Ansible playbooks for later container deployment.
Container plays a crucial role because it’s lighted-weight, flexible and portable characteristic greatly enhance the efficiency of the deployment process.
Once the deployment is completed using Kolla-ansible, the OpenStack service container will execute tasks similar to the original charms deployment method: using libvirt API to interact with KVM hypervisor.
Step by Step Guide
Official Guide(https://docs.openstack.org/kolla-ansible/latest/user/quickstart.html) is reliable document if you’ve choose latest version. How funny was that I chose to deploy YOGA for most updated functionality, but went wrong over and over again.
Here is the brief summarize of the guide context.
Step 1: Install Dependencies
Step 2: Clone Kolla-Ansible Repository
Step 3: Copy the Configuration File to Destination
all-in-one, ansible inventory file, show 6 types of hosts to deploy and all serve on localhost.
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[control]
localhost ansible_connection=local
[network]
localhost ansible_connection=local
[compute]
localhost ansible_connection=local
[storage]
localhost ansible_connection=local
[monitoring]
localhost ansible_connection=local
[deployment]
localhost ansible_connection=local
globals.yml main configuration Step 4: Edit the Configuration Files
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kolla_base_distro: "ubuntu"
network_interface: "eth0"
neutron_external_interface: "eth1"
kolla_internal_vip_address: "10.1.0.250"
Step 5: Bootstrap Servers Step 7: Deploy OpenStack Step 8: Post-Deployment Setup
Result of Kolla-Ansible Deployment
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~$ sudo docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
1ae523539d56 quay.io/openstack.kolla/horizon:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) horizon
c30f90bd97f6 quay.io/openstack.kolla/heat-engine:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) heat_engine
83a5425f4f7c quay.io/openstack.kolla/heat-api-cfn:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) heat_api_cfn
922cfb0ade52 quay.io/openstack.kolla/heat-api:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) heat_api
8df3c8193bb5 quay.io/openstack.kolla/neutron-metadata-agent:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) neutron_metadata_agent
a9bd1226c31d quay.io/openstack.kolla/neutron-l3-agent:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) neutron_l3_agent
b9cefdbd4580 quay.io/openstack.kolla/neutron-dhcp-agent:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) neutron_dhcp_agent
e92abf1e638c quay.io/openstack.kolla/neutron-openvswitch-agent:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) neutron_openvswitch_agent
a2b51983fa51 quay.io/openstack.kolla/neutron-server:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) neutron_server
f7db7a7410e1 quay.io/openstack.kolla/openvswitch-vswitchd:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) openvswitch_vswitchd
fa7ad45e7269 quay.io/openstack.kolla/openvswitch-db-server:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) openvswitch_db
84a1b84beac2 quay.io/openstack.kolla/nova-compute:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) nova_compute
75699d4058da quay.io/openstack.kolla/nova-libvirt:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) nova_libvirt
f1070570eeae quay.io/openstack.kolla/nova-ssh:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) nova_ssh
c5b4601a0f76 quay.io/openstack.kolla/nova-novncproxy:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) nova_novncproxy
48cb9f48a1d7 quay.io/openstack.kolla/nova-conductor:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) nova_conductor
b3d011f128d9 quay.io/openstack.kolla/nova-api:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) nova_api
7c617ad17d6e quay.io/openstack.kolla/nova-scheduler:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) nova_scheduler
73040875217b quay.io/openstack.kolla/placement-api:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) placement_api
59cac6707023 quay.io/openstack.kolla/glance-api:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) glance_api
ee3ac2e0c2fc quay.io/openstack.kolla/keystone:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) keystone
f0d2fe5e75f9 quay.io/openstack.kolla/keystone-fernet:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) keystone_fernet
b9153c1cd1b2 quay.io/openstack.kolla/keystone-ssh:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) keystone_ssh
1f49340675a6 quay.io/openstack.kolla/rabbitmq:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) rabbitmq
2af1b258b048 quay.io/openstack.kolla/memcached:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days (healthy) memcached
54ef9ec23bfc quay.io/openstack.kolla/mariadb-server:master-ubuntu-jammy "dumb-init -- kolla_…" 7 days ago Up 7 days (healthy) mariadb
52e75ac7af0a quay.io/openstack.kolla/cron:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days cron
aeb85d93d58f quay.io/openstack.kolla/kolla-toolbox:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days kolla_toolbox
0405af7aed05 quay.io/openstack.kolla/fluentd:master-ubuntu-jammy "dumb-init --single-…" 7 days ago Up 7 days fluentd
Post Deployment
Kolla-Ansible also give a convinient shell script, init-runonce, to create an sample ready-to-go environment.