Ensure services are running.

Added state=started for alertmanager and prometheus since reload fails
if services are not running.
Also added task to install gcc in RedHat family when installing from
source.

tasks/install-alertmanager.yml

@@ -123,7 +123,7 @@
   template: src="../templates/alertmanager.sysvinit.{{ ansible_os_family|lower }}.sh.j2"  dest="/etc/init.d/alertmanager"  mode="a+x"
 
 - name: set INIT status
-  service: name=alertmanager enabled=yes
+  service: name=alertmanager enabled=yes state=started
 
 #- name: set INIT status and start
 #  service: name=alertmanager state=started

tasks/install-compile-tools.yml

@@ -20,6 +20,9 @@
   apt: name=build-essential state=present update_cache=yes
   when: ansible_pkg_mgr == "apt"
 
+- name: install gcc
+  yum: name=gcc state=present update_cache=yes
+  when: ansible_pkg_mgr == "yum"
 
 - name: set internal variables for convenience
   set_fact:

tasks/install-prometheus.yml

@@ -122,7 +122,7 @@
   template: src="../templates/prometheus.sysvinit.{{ ansible_os_family|lower }}.sh.j2"  dest="/etc/init.d/prometheus"  mode="a+x"
 
 - name: set INIT status
-  service: name=prometheus enabled=yes
+  service: name=prometheus enabled=yes state=started
 
 - name: copy prometheus main config file from role's default, if necessary
   template: