Install and configure controller node for Ubuntu

Install and configure controller node for Ubuntu

This section describes how to install and configure the Container service for Ubuntu 16.04 (LTS).

Prerequisites

Before you install and configure Zun, you must create a database, service credentials, and API endpoints.

  1. To create the database, complete these steps:

    • Use the database access client to connect to the database server as the root user:

      # mysql
      
    • Create the zun database:

      MariaDB [(none)] CREATE DATABASE zun;
      
    • Grant proper access to the zun database:

      MariaDB [(none)]> GRANT ALL PRIVILEGES ON zun.* TO 'zun'@'localhost' \
        IDENTIFIED BY 'ZUN_DBPASS';
      MariaDB [(none)]> GRANT ALL PRIVILEGES ON zun.* TO 'zun'@'%' \
        IDENTIFIED BY 'ZUN_DBPASS';
      

      Replace ZUN_DBPASS with a suitable password.

    • Exit the database access client.

  2. Source the admin credentials to gain access to admin-only CLI commands:

    $ . admin-openrc
    
  3. To create the service credentials, complete these steps:

    • Create the zun user:

      $ openstack user create --domain default --password-prompt zun
      User Password:
      Repeat User Password:
      +-----------+----------------------------------+
      | Field     | Value                            |
      +-----------+----------------------------------+
      | domain_id | e0353a670a9e496da891347c589539e9 |
      | enabled   | True                             |
      | id        | ca2e175b851943349be29a328cc5e360 |
      | name      | zun                              |
      +-----------+----------------------------------+
      
    • Add the admin role to the zun user:

      $ openstack role add --project service --user zun admin
      

      Note

      This command provides no output.

    • Create the zun service entities:

      $ openstack service create --name zun \
          --description "Container Service" container
      +-------------+----------------------------------+
      | Field       | Value                            |
      +-------------+----------------------------------+
      | description | Container Service                |
      | enabled     | True                             |
      | id          | 727841c6f5df4773baa4e8a5ae7d72eb |
      | name        | zun                              |
      | type        | container                        |
      +-------------+----------------------------------+
      
  4. Create the Container service API endpoints:

    $ openstack endpoint create --region RegionOne \
        container public http://controller:9517/v1
    +--------------+-----------------------------------------+
    | Field        | Value                                   |
    +--------------+-----------------------------------------+
    | enabled      | True                                    |
    | id           | 3f4dab34624e4be7b000265f25049609        |
    | interface    | public                                  |
    | region       | RegionOne                               |
    | region_id    | RegionOne                               |
    | service_id   | 727841c6f5df4773baa4e8a5ae7d72eb        |
    | service_name | zun                                     |
    | service_type | container                               |
    | url          | http://controller:9517/v1               |
    +--------------+-----------------------------------------+
    
    $ openstack endpoint create --region RegionOne \
        container internal http://controller:9517/v1
    +--------------+-----------------------------------------+
    | Field        | Value                                   |
    +--------------+-----------------------------------------+
    | enabled      | True                                    |
    | id           | 9489f78e958e45cc85570fec7e836d98        |
    | interface    | internal                                |
    | region       | RegionOne                               |
    | region_id    | RegionOne                               |
    | service_id   | 727841c6f5df4773baa4e8a5ae7d72eb        |
    | service_name | zun                                     |
    | service_type | container                               |
    | url          | http://controller:9517/v1               |
    +--------------+-----------------------------------------+
    
    $ openstack endpoint create --region RegionOne \
        container admin http://controller:9517/v1
    +--------------+-----------------------------------------+
    | Field        | Value                                   |
    +--------------+-----------------------------------------+
    | enabled      | True                                    |
    | id           | 76091559514b40c6b7b38dde790efe99        |
    | interface    | admin                                   |
    | region       | RegionOne                               |
    | region_id    | RegionOne                               |
    | service_id   | 727841c6f5df4773baa4e8a5ae7d72eb        |
    | service_name | zun                                     |
    | service_type | container                               |
    | url          | http://controller:9517/v1               |
    +--------------+-----------------------------------------+
    

Install and configure components

  1. Create zun user and necessary directories:

    • Create user:

      # groupadd --system zun
      # useradd --home-dir "/var/lib/zun" \
            --create-home \
            --system \
            --shell /bin/false \
            -g zun \
            zun
      
    • Create directories:

      # mkdir -p /etc/zun
      # chown zun:zun /etc/zun
      
  2. Clone and install zun:

    # apt-get install python-pip
    # cd /var/lib/zun
    # git clone -b stable/queens https://git.openstack.org/openstack/zun.git
    # chown -R zun:zun zun
    # cd zun
    # pip install -r requirements.txt
    # python setup.py install
    
  3. Generate a sample configuration file:

    # su -s /bin/sh -c "oslo-config-generator \
        --config-file etc/zun/zun-config-generator.conf" zun
    # su -s /bin/sh -c "cp etc/zun/zun.conf.sample \
        /etc/zun/zun.conf" zun
    
  4. Copy api-paste.ini:

    # su -s /bin/sh -c "cp etc/zun/api-paste.ini /etc/zun" zun
    
  5. Edit the /etc/zun/zun.conf:

    • In the [DEFAULT] section, configure RabbitMQ message queue access:

      [DEFAULT]
      ...
      transport_url = rabbit://openstack:RABBIT_PASS@controller
      

      Replace RABBIT_PASS with the password you chose for the openstack account in RabbitMQ.

    • In the [api] section, configure the IP address that Zun API server is going to listen:

      [api]
      ...
      host_ip = 10.0.0.11
      port = 9517
      

      Replace 10.0.0.11 with the management interface IP address of the controller node if different.

    • In the [database] section, configure database access:

      [database]
      ...
      connection = mysql+pymysql://zun:ZUN_DBPASS@controller/zun
      

      Replace ZUN_DBPASS with the password you chose for the zun database.

    • In the [keystone_auth] section, configure Identity service access:

      [keystone_auth]
      memcached_servers = controller:11211
      auth_uri = http://controller:5000
      project_domain_name = default
      project_name = service
      user_domain_name = default
      password = ZUN_PASS
      username = zun
      auth_url = http://controller:35357
      auth_type = password
      auth_version = v3
      auth_protocol = http
      service_token_roles_required = True
      endpoint_type = internalURL
      
    • In the [keystone_authtoken] section, configure Identity service access:

      [keystone_authtoken]
      ...
      memcached_servers = controller:11211
      auth_uri = http://controller:5000
      project_domain_name = default
      project_name = service
      user_domain_name = default
      password = ZUN_PASS
      username = zun
      auth_url = http://controller:35357
      auth_type = password
      auth_version = v3
      auth_protocol = http
      service_token_roles_required = True
      endpoint_type = internalURL
      

      Replace ZUN_PASS with the password you chose for the zun user in the Identity service.

    • In the [oslo_concurrency] section, configure the lock_path:

      [oslo_concurrency]
      ...
      lock_path = /var/lib/zun/tmp
      
    • In the [oslo_messaging_notifications] section, configure the driver:

      [oslo_messaging_notifications]
      ...
      driver = messaging
      
    • In the [websocket_proxy] section, configure the IP address that the websocket proxy is going to listen to:

      [websocket_proxy]
      ...
      wsproxy_host = 10.0.0.11
      wsproxy_port = 6784
      

      Replace 10.0.0.11 with the management interface IP address of the controller node if different.

    Note

    Make sure that /etc/zun/zun.conf still have the correct permissions. You can set the permissions again with:

    # chown zun:zun /etc/zun/zun.conf

  6. Populate Zun database:

    # su -s /bin/sh -c "zun-db-manage upgrade" zun
    

Finalize installation

  1. Create an upstart config, it could be named as /etc/systemd/system/zun-api.service:

    [Unit]
    Description = OpenStack Container Service API
    
    [Service]
    ExecStart = /usr/local/bin/zun-api
    User = zun
    
    [Install]
    WantedBy = multi-user.target
    
  2. Create an upstart config, it could be named as /etc/systemd/system/zun-wsproxy.service:

    [Unit]
    Description = OpenStack Container Service Websocket Proxy
    
    [Service]
    ExecStart = /usr/local/bin/zun-wsproxy
    User = zun
    
    [Install]
    WantedBy = multi-user.target
    
  3. Enable and start zun-api and zun-wsproxy:

    # systemctl enable zun-api
    # systemctl enable zun-wsproxy
    
    # systemctl start zun-api
    # systemctl start zun-wsproxy
    
  4. Verify that zun-api and zun-wsproxy services are running:

    # systemctl status zun-api
    # systemctl status zun-wsproxy
    
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