mirror-update: install afsmon and run from cron

afsmon reports stats on partitions, volumes and server health into
graphite via statsd.

This installs the tool in a virtualenv with a minimal config file, and
runs it every half an hour from cron.

Change-Id: I7dc57c841fcdd3775d08f116deb46464b3e21d26

modules/openstack_project/manifests/mirror_update.pp

@@ -582,4 +582,49 @@ class openstack_project::mirror_update (
     key_type   => 'public',
     key_source => 'puppet:///modules/openstack_project/reprepro/mariadb-mirror-new-gpg-key.asc',
   }
+
+  # AFS Monitoring
+  file { '/etc/afsmon.cfg':
+    ensure => present,
+    content => template('openstack_project/mirror-update/afsmon.cfg.erb'),
+    replace => true,
+  }
+
+  vcsrepo { '/opt/afsmon':
+    ensure   => latest,
+    provider => git,
+    revision => 'master',
+    source   => 'https://git.openstack.org/openstack-infra/afsmon',
+  }
+
+  python::virtualenv { '/usr/afsmon-env':
+    ensure     => present,
+    owner      => 'root',
+    group      => 'root',
+    timeout    => 0,
+    # puppet-python 1.9.4 wants to guess we want "virtualenv-3", which
+    # we don't.  Fixed in later versions.
+    virtualenv => 'virtualenv',
+    version    => 3,
+  }
+
+  exec { 'install_afsmon' :
+    command     => '/usr/afsmon-env/bin/pip install --upgrade /opt/afsmon',
+    path        => '/usr/local/bin:/usr/bin:/bin',
+    refreshonly => true,
+    subscribe   => Vcsrepo['/opt/afsmon'],
+    require     => Python::Virtualenv['/usr/afsmon-env'],
+  }
+
+  cron { 'afsmon':
+    minute      => [0, 30],
+    command     => '/usr/afsmon-env/bin/afsmon stats >> /var/log/afsmon.log 2>&1',
+    environment => 'PATH=/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin',
+    require     => [
+                    Python::Virtualenv['/usr/afsmon-env'],
+                    Exec['install_afsmon'],
+                    File['/etc/afsmon.cfg'],
+                   ],
+  }
+
 }

modules/openstack_project/templates/mirror-update/afsmon.cfg.erb

@@ -0,0 +1,17 @@
+[main]
+# Enable debugging output
+debug = True
+
+# If specified, all fileservers in this cell will be queried
+cell = openstack.org
+
+# You can specify a specific list of fileservers.  This is appended to
+# the cell fileservers if present, otherwise is the canonical list
+#fileservers = afs01.dfw.openstack.org
+#         fileserver02.afs.company.com
+#         fileserver03.afs.company.com
+
+# Options for remote statsd host if required
+[statsd]
+host = graphite.openstack.org
+port = 8125