48aea5637f
Kolla Ansible's bootstrap-servers command provides support for installing the Docker engine. This is currently done using the packages at https://apt.dockerproject.org and https://yum.dockerproject.org. These packages are outdated, with the most recent packages from May 2017 - docker-engine-17.05. The source for up to date docker packages is https://download.docker.com, which was introduced with the move to Docker Community Edition (CE) and Docker Enterprise Edition (EE). This change adds support to bootstrap-servers for Docker CE for CentOS and Ubuntu. It also adds a new variable, 'enable_docker_repo', which controls whether a package repository for Docker will be enabled. It also adds a new variable, 'docker_legacy_packages', which controls whether the legacy packages at dockerproject.org will be used or the newer packages at docker.com. The default value for this variable is 'false', meaning to use Docker CE. Upgrading from docker-engine to docker-ce has been tested on CentOS 7.5 and Ubuntu 16.04, by running 'kolla-ansible bootstrap-servers' with 'docker_legacy_packages' set to 'false'. The upgrades were successful, but result in all containers being stopped. For this reason, the bootstrap-servers command checks running containers prior to upgrading packages, and ensures they are running after the package upgrade is complete. As mentioned in the release note, care should be taken when upgrading Docker with clustered services, which could lose quorum. To avoid this, use --serial or --limit to apply the change in batches. Change-Id: I6dfd375c868870f8646ef1a8f02c70812e8f6271 Implements: blueprint docker-ce
41 lines
1.4 KiB
YAML
41 lines
1.4 KiB
YAML
---
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# NOTE(awiddersheim): Gather facts for all hosts as a
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# first step since several plays below require them when
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# building their configurations. The below 'gather_facts'
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# set to 'false' is a bit confusing but this is to avoid
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# Ansible gathering facts twice.
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- name: Gather facts for all hosts
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hosts: all
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serial: '{{ kolla_serial|default("0") }}'
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gather_facts: false
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tasks:
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- setup:
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tags: always
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# NOTE(pbourke): This case covers deploying subsets of hosts using --limit. The
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# limit arg will cause the first play to gather facts only about that node,
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# meaning facts such as IP addresses for rabbitmq nodes etc. will be undefined
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# in the case of adding a single compute node.
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# We don't want to add the delegate parameters to the above play as it will
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# result in ((num_nodes-1)^2) number of SSHs when running for all nodes
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# which can be very inefficient.
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- name: Gather facts for all hosts (if using --limit)
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hosts: all
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serial: '{{ kolla_serial|default("0") }}'
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gather_facts: false
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tasks:
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- setup:
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delegate_facts: True
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delegate_to: "{{ item }}"
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with_items: "{{ groups['all'] }}"
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when:
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- (ansible_play_batch | length) != (groups['all'] | length)
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- name: Apply role baremetal
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hosts: baremetal
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serial: '{{ kolla_serial|default("0") }}'
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gather_facts: false
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roles:
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- { role: baremetal,
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tags: baremetal }
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