Ensure sysstat is running on CentOS

This patch fixes sysstat on CentOS so that it runs properly.

Closes-Bug: 1717361
Change-Id: If95b0e02d7863291f88b67909128439599660ad0
(cherry picked from commit e9f75bf860)

defaults/main.yml

@@ -103,3 +103,6 @@ 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'

releasenotes/notes/sysstat-centos-opensuse-running-0be396c60a513562.yaml

@@ -0,0 +1,8 @@
+---
+fixes:
+  - |
+    The ``sysstat`` package was installed on all distributions, but it was
+    only configured to run on Ubuntu and OpenSUSE. It would not run on CentOS
+    due to bad SELinux contexts and file permissions on
+    ``/etc/cron.d/sysstat``. This has been fixed and ``sysstat`` now runs
+    properly on CentOS.

tasks/openstack_sysstat.yml

@@ -20,13 +20,28 @@
     mode: "0644"
   when:
     - openstack_host_sysstat_enabled | bool
-    - ansible_os_family == "Debian"
+    - ansible_pkg_mgr == 'apt'
   notify: Restart sysstat
 
 - name: Enable sysstat cron
   template:
     src: "{{ openstack_host_cron_template }}"
     dest: "/etc/cron.d/sysstat"
-    mode: "0755"
+    mode: "{{ openstack_host_sysstat_cron_mode }}"
   when:
     - openstack_host_sysstat_enabled | bool
+
+- name: Restore SELinux contexts on sysstat cron file
+  command: restorecon -v /etc/cron.d/sysstat
+  when:
+    - openstack_host_sysstat_enabled | bool
+    - ansible_pkg_mgr in ['yum', 'dnf']
+
+- name: Start and enable the sysstat service
+  service:
+    name: sysstat
+    state: started
+    enabled: yes
+  when:
+    - openstack_host_sysstat_enabled | bool
+    - ansible_pkg_mgr in ['yum', 'dnf', 'zypper']

vars/redhat-7.yml

@@ -19,6 +19,8 @@ openstack_host_sysstat_file: /etc/sysconfig/sysstat
 openstack_host_cron_template: sysstat.cron.redhat.j2
 openstask_host_module_file: /etc/modules-load.d/openstack-ansible.conf
 
+openstack_host_sysstat_cron_mode: '0600'
+
 ## Kernel modules loaded on hosts
 openstack_host_kernel_modules:
   - 8021q