132 lines
4.7 KiB
YAML
132 lines
4.7 KiB
YAML
---
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# Copyright 2016, Rackspace US, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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- name: Ensure the lxc dnsmasq user exists
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user:
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name: "{{ lxc_net_dnsmasq_user }}"
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comment: "LXC dnsmasq"
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system: "yes"
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shell: "/bin/false"
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home: "/var/lib/lxc"
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tags:
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- lxc-dnsmasq-user
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- name: Drop base config file(s)
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template:
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src: "{{ item.src }}"
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dest: "{{ item.dest }}"
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owner: "{{ item.owner|default('root') }}"
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group: "{{ item.group|default('root') }}"
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mode: "{{ item.mode|default('0644') }}"
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with_items:
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- { src: lxc-openstack.conf.j2, dest: "/etc/lxc/lxc-openstack.conf" }
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- { src: lxc-net.default.j2, dest: "{{ system_config_dir }}/lxc-net", mode: "0644" }
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- { src: lxc.default.j2, dest: "{{ system_config_dir }}/lxc", mode: "0644" }
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- { src: lxc-system-manage.j2, dest: "/usr/local/bin/lxc-system-manage", mode: "0755" }
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tags:
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- lxc-files
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- lxc-config
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- name: Pull lxc version
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command: "lxc-ls --version"
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changed_when: false
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register: lxc_version
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tags:
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- skip_ansible_lint
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- name: Enable or Disable lxc three syntax
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set_fact:
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lxc_major_version: "{{ lxc_version.stdout.split('.')[0] }}"
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- name: Drop lxc veth check script
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copy:
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src: "lxc-veth-check.sh"
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dest: "/usr/local/bin/lxc-veth-check"
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owner: "root"
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group: "root"
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mode: "0755"
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tags:
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- lxc-files
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- lxc-config
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- name: Set systemd DefaultTasksMax value
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lineinfile:
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dest: /etc/systemd/system.conf
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state: present
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regexp: "^.*DefaultTasksMax.*$"
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line: "DefaultTasksMax={{ lxc_default_tasks_max }}"
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when:
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- ansible_service_mgr == 'systemd'
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notify:
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- Reload systemd units
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tags:
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- lxc-config
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# NOTE(hwoarang): The previous task only affected newly created services.
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# However, for particular systemd versions like v228 the default one for
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# started scopes is 512
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# See https://github.com/systemd/systemd/commit/9ded9cd14cc03c67291b10a5c42ce5094ba0912f
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# This has later been fixed in v231
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# https://github.com/systemd/systemd/commit/79baeeb96d58676853521e10a358e85d83dac7f1
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# The only way to change the value for already started services and scopes is
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# by using the sysfs interface. Moreover, it appears that lxc places itself into the
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# init.scope group which is being created during boot and as such it always uses
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# the default value. There are variours reports that the init.scope breaks things
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# for LXC such as
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# https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1497420
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# https://github.com/lxc/lxc/issues/713
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# https://bugs.archlinux.org/index.php?do=details&action=details.addvote&task_id=47303
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# In any case, it's best to also edit the pids controller to ensure that a
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# better max value is used in the init.scope
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- name: Check that the init.scope support the pid controller
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stat:
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path: "/sys/fs/cgroup/pids/init.scope/pids.max"
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register: _init_scope_pid
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tags:
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- lxc-config
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- block:
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- name: Get init.scope pids.max value
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slurp:
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src: "/sys/fs/cgroup/pids/init.scope/pids.max"
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register: init_scope_cgroup_pids_max
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changed_when: false
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# NOTE(cloudnull): The "shell" module is being used instead of "copy" with
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# content as we need direct write access to the sysFS.
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- name: Set systemd pids.max in init.scope
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shell: "echo {{ lxc_default_tasks_max }} > /sys/fs/cgroup/pids/init.scope/pids.max"
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when:
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- (init_scope_cgroup_pids_max.content | b64decode) != lxc_default_tasks_max
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tags:
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- skip_ansible_lint
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rescue:
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- name: Notice regarding setting the init.scope/pids.max
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debug:
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msg: |
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Failed writing to "/sys/fs/cgroup/pids/init.scope/pids.max". While
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we prefer setting this option it's not required. See the following
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issues on why this is desired and what can be done when the cgroup
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hierarchy exists.
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* https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1497420
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* https://github.com/lxc/lxc/issues/713
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* https://bugs.archlinux.org/index.php?do=details&action=details.addvote&task_id=47303
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when: _init_scope_pid.stat.exists
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tags:
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- lxc-config
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# Ensure apparmor reindex runs before other things that may fail
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- meta: flush_handlers
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