---
# Copyright 2017, Rackspace US, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

- name: Check Kernel Version
  fail:
    msg: >
      Wrong kernel Version found
      [ {{ ansible_kernel }} < {{ openstack_host_required_kernel }} ]
      Resolve this issue before continuing.
  when:
    - ansible_kernel is version_compare(openstack_host_required_kernel, '<')

- name: Install distro packages for bare metal nodes
  package:
    name: "{{ openstack_host_metal_distro_packages }}"
    state: "{{ openstack_hosts_package_state }}"
  register: install_packages
  until: install_packages  is success
  retries: 5
  delay: 2

- name: check how kernel modules are implemented (statically builtin, dynamic, not set)
  slurp:
    src: "/boot/config-{{ ansible_kernel }}"
  register: modules
  when:
    - openstack_host_specific_kernel_modules | length > 0

- name: Fail fast if we can't load a module
  fail:
    msg: "{{ item.pattern }} is not set"
  with_items: "{{ openstack_host_specific_kernel_modules  }}"
  when:
    - item.pattern is defined
    - (modules.content | b64decode).find(item.pattern + ' is not set') != -1

- name: "Load kernel module(s)"
  modprobe:
    name: "{{ item.name }}"
  with_items: "{{ openstack_host_kernel_modules + openstack_host_specific_kernel_modules }}"
  when:
    - item.name != ''
    - item.pattern is undefined or (item.pattern is defined and (modules.content | b64decode).find(item.pattern + '=m') != -1)

- name: Write list of modules to load at boot
  template:
    src: modprobe.conf.j2
    dest: "{{ openstack_host_module_file }}"

- name: Adding new system tuning
  sysctl:
    name: "{{ item.key }}"
    value: "{{ item.value }}"
    sysctl_set: "{{ item.set|default('yes') }}"
    state: "{{ item.state|default('present') }}"
    reload: no
  with_items: "{{ openstack_kernel_options + openstack_user_kernel_options }}"
  failed_when: false

- name: Configure sysstat
  include_tasks: openstack_sysstat.yml
  when:
    - openstack_host_sysstat_enabled | bool

- name: Create a directory to hold systemd journals on disk
  file:
    path: /var/log/journal
    state: directory
  register: journald_directory
  when:
    - openstack_host_keep_journals | bool

# NOTE(mhayden): The linter is skipped here since the command does not create
# any files. The command ensures that proper permissions and SELinux contests
# are set.
- name: Create tmpfiles structure in journald directory
  command: systemd-tmpfiles --create --prefix /var/log/journal
  when:
    - journald_directory is changed
    - openstack_host_keep_journals | bool
  notify:
    - Restart systemd-journald
  tags:
    - skip_ansible_lint