OpenStack-Ansible openstack_hosts¶

# /etc/openstack-release settings
openstack_distrib_id: "OSA"
openstack_distrib_release: "{{ openstack_release | default('master') }}"
openstack_distrib_code_name: "Pike"
openstack_distrib_description: "OpenStack-Ansible"
openstack_distrib_file: yes
openstack_distrib_file_path: "/etc/openstack-release"

openstack_host_sysstat_enabled: true
openstack_host_sysstat_interval: 1
openstack_host_sysstat_statistics_hour: 23

# Set the package install state for distribution packages
# Options are 'present' and 'latest'
openstack_hosts_package_state: "latest"

## Enable/disable /etc/hosts file management
## You should make other arrangements for name resolution
## of OSA containers and hosts if disabling this
openstack_host_manage_hosts_file: true

## kernel modules for specific group hosts
openstack_host_specific_kernel_modules: []
# to include it in your play, an example is given below:
#openstack_host_specific_kernel_modules:
#  - { name: "ebtables", pattern: "CONFIG_BRIDGE_NF_EBTABLES", group: "network_hosts" }
## :param name: name of the kernel module
## :param pattern: pattern to grep for in /boot/config-$kernel_version to check how module is configured inside kernel
## :param group: group of hosts where the module will be loaded

# The following garbage collection values are set to better support lots of neutron networks/routers.
#  Used for setting the net.ipv4/6.neigh.default.gc_thresh* values. This assumes that facts were
#  gathered to obtain the total amount of memory available on a given host. If no facts are gathered
#  the default set will be 1024 unless its defined by the user.
gc_val: "{{ ansible_memtotal_mb | default(1024) | bit_length_power_of_2 }}"
# The ste value has a Max allowable value of 8192 unless set by the user.
set_gc_val: "{{ gc_val if (gc_val | int <= 8192) else 8192 }}"

# Controls the shell search PATH environment variable dropped in
# /etc/environment
openstack_host_environment_path:
  - /usr/local/sbin
  - /usr/local/bin
  - /usr/sbin
  - /usr/bin
  - /sbin
  - /bin
  - /usr/games
  - /usr/local/games

# Set the maximum size of the connection tracking table.
openstack_host_nf_conntrack_max: 262144

# System control kernel tuning
openstack_kernel_options:
  - { key: 'fs.inotify.max_user_watches', value: 36864 }
  - { key: 'net.ipv4.conf.all.rp_filter', value: 0 }
  - { key: 'net.ipv4.conf.default.rp_filter', value: 0 }
  - { key: 'net.ipv4.ip_forward', value: 1 }
  - { key: 'net.netfilter.nf_conntrack_max', value: "{{ openstack_host_nf_conntrack_max }}" }
  - { key: 'vm.dirty_background_ratio', value: 5 }
  - { key: 'vm.dirty_ratio', value: 10 }
  - { key: 'vm.swappiness', value: 5 }
  - { key: 'net.bridge.bridge-nf-call-ip6tables', value: 1 }
  - { key: 'net.bridge.bridge-nf-call-iptables', value: 1 }
  - { key: 'net.bridge.bridge-nf-call-arptables', value: 1 }
  - { key: 'net.ipv4.neigh.default.gc_thresh1', value: "{{ set_gc_val | int // 2 }}" }
  - { key: 'net.ipv4.neigh.default.gc_thresh2', value: "{{ set_gc_val | int }}" }
  - { key: 'net.ipv4.neigh.default.gc_thresh3', value: "{{ set_gc_val | int * 2 }}" }
  - { key: 'net.ipv4.route.gc_thresh', value: "{{ set_gc_val | int * 2 }}" }
  - { key: 'net.ipv4.neigh.default.gc_interval', value: 60 }
  - { key: 'net.ipv4.neigh.default.gc_stale_time', value: 120 }
  - { key: 'net.ipv6.neigh.default.gc_thresh1', value: "{{ set_gc_val | int // 2 }}" }
  - { key: 'net.ipv6.neigh.default.gc_thresh2', value: "{{ set_gc_val | int }}" }
  - { key: 'net.ipv6.neigh.default.gc_thresh3', value: "{{ set_gc_val | int * 2 }}" }
  - { key: 'net.ipv6.route.gc_thresh', value: "{{ set_gc_val | int * 2 }}" }
  - { key: 'net.ipv6.neigh.default.gc_interval', value: 60 }
  - { key: 'net.ipv6.neigh.default.gc_stale_time', value: 120 }
  - { key: 'net.ipv6.conf.lo.disable_ipv6', value: 0 }
  - { key: 'fs.aio-max-nr', value: 131072 }

# Optional user defined list of sysctl options in the same dict item format as
# above.
openstack_user_kernel_options: []

# Set the openstack domain name
openstack_domain: openstack.local

# Global environment variables should be empty by default
global_environment_variables: {}

# Set the default mode for the /etc/cron.d/sysstat file
openstack_host_sysstat_cron_mode: '0755'

- name: Basic host setup
  hosts: "hosts"
  user: root
  roles:
    - { role: "openstack_hosts" }