Add cephadm_host_labels

Allows for setting additional labels for hosts

Author: mnasiadka

roles/cephadm/README.md

@@ -32,6 +32,7 @@ All Ceph hosts must be in the `ceph` group.
   * `cephadm_recreate`: If existing cluster should be destroyed and recreated (default: False)
   * `cephadm_custom_repos`: If enabled - the role won't define yum/apt repositories (default: False)
   * `cephadm_package_update`: If enabled - cephadm package will be updated to latest version (default: False)
+  * `cephadm_host_labels`: If set (list format) - those additional labels will be applied to host definitions (default: [] - empty list)
   * Bootstrap settings
     * `cephadm_bootstrap_host`: The host on which to bootstrap Ceph (default: `groups['mons'][0]`)
     * `cephadm_enable_dashboard`: If enabled - dashboard service on MGR will be enabled (default: False)

roles/cephadm/defaults/main.yml

@@ -19,6 +19,7 @@ cephadm_bootstrap_host: "{{ groups['mons'][0] }}"
 cephadm_enable_dashboard: False
 cephadm_enable_firewalld: False
 cephadm_enable_monitoring: False
+cephadm_host_labels: []
 cephadm_install_ceph_cli: False
 cephadm_ssh_public_key: "/etc/ceph/cephadm.pub"
 cephadm_ssh_private_key: "/etc/ceph/cephadm.id"

roles/cephadm/templates/cluster.yml.j2

@@ -17,6 +17,9 @@ labels:
 {% if host in groups.get('rgws', []) %}
   - rgw
 {% endif %}
+{% if hostvars[host].cephadm_host_labels | length > 0 %}
+{{ hostvars[host].cephadm_host_labels }}
+{% endif %}
 {% endfor %}
 ---
 service_type: mon