Change worker-multiplier to float

Change the worker-multiplier to a floating point config option type
instead of integer. This allows users to specify workers to be less
than the number of CPUs, which is useful in deployments with multiple
services deployed into containers on top of bare metal.

The fix is to simply change the config option type and to sync in
the necessary update from lp:charm-helpers.

Partial-Bug: #1602444

Change-Id: I31d7652e7ad5db0185b78e2c4c2c1d2ddba05be2
Signed-off-by: Billy Olsen <billy.olsen@gmail.com>

charmhelpers/contrib/openstack/amulet/deployment.py

@@ -71,7 +71,7 @@ class OpenStackAmuletDeployment(AmuletDeployment):
         base_charms = {
             'mysql': ['precise', 'trusty'],
             'mongodb': ['precise', 'trusty'],
-            'nrpe': ['precise', 'trusty'],
+            'nrpe': ['precise', 'trusty', 'wily', 'xenial'],
         }
 
         for svc in other_services:
@@ -112,7 +112,7 @@ class OpenStackAmuletDeployment(AmuletDeployment):
 
         # Charms which should use the source config option
         use_source = ['mysql', 'mongodb', 'rabbitmq-server', 'ceph',
-                      'ceph-osd', 'ceph-radosgw', 'ceph-mon']
+                      'ceph-osd', 'ceph-radosgw', 'ceph-mon', 'ceph-proxy']
 
         # Charms which can not use openstack-origin, ie. many subordinates
         no_origin = ['cinder-ceph', 'hacluster', 'neutron-openvswitch', 'nrpe',

charmhelpers/contrib/openstack/context.py

@@ -57,6 +57,7 @@ from charmhelpers.core.host import (
     mkdir,
     write_file,
     pwgen,
+    lsb_release,
 )
 from charmhelpers.contrib.hahelpers.cluster import (
     determine_apache_port,
@@ -1195,7 +1196,10 @@ class WorkerConfigContext(OSContextGenerator):
 
     def __call__(self):
         multiplier = config('worker-multiplier') or 0
-        ctxt = {"workers": self.num_cpus * multiplier}
+        count = int(self.num_cpus * multiplier)
+        if multiplier > 0 and count == 0:
+            count = 1
+        ctxt = {"workers": count}
         return ctxt
 
 
@@ -1436,7 +1440,8 @@ class AppArmorContext(OSContextGenerator):
         :return ctxt: Dictionary of the apparmor profile or None
         """
         if config('aa-profile-mode') in ['disable', 'enforce', 'complain']:
-            ctxt = {'aa_profile_mode': config('aa-profile-mode')}
+            ctxt = {'aa_profile_mode': config('aa-profile-mode'),
+                    'ubuntu_release': lsb_release()['DISTRIB_RELEASE']}
         else:
             ctxt = None
         return ctxt

charmhelpers/core/host.py

@@ -174,7 +174,7 @@ def init_is_systemd():
 
 
 def adduser(username, password=None, shell='/bin/bash', system_user=False,
-            primary_group=None, secondary_groups=None, uid=None):
+            primary_group=None, secondary_groups=None, uid=None, home_dir=None):
     """Add a user to the system.
 
     Will log but otherwise succeed if the user already exists.
@@ -186,6 +186,7 @@ def adduser(username, password=None, shell='/bin/bash', system_user=False,
     :param str primary_group: Primary group for user; defaults to username
     :param list secondary_groups: Optional list of additional groups
     :param int uid: UID for user being created
+    :param str home_dir: Home directory for user
 
     :returns: The password database entry struct, as returned by `pwd.getpwnam`
     """
@@ -200,6 +201,8 @@ def adduser(username, password=None, shell='/bin/bash', system_user=False,
         cmd = ['useradd']
         if uid:
             cmd.extend(['--uid', str(uid)])
+        if home_dir:
+            cmd.extend(['--home', str(home_dir)])
         if system_user or password is None:
             cmd.append('--system')
         else:

config.yaml

@@ -60,8 +60,8 @@ options:
     type: int
     description: Listening port of the swift-account-server.
   worker-multiplier:
-    default: 1
-    type: int
+    default: 1.0
+    type: float
     description: |
       The CPU multiplier to use when configuring worker processes for the
       account, container and object server processes.

tests/charmhelpers/contrib/openstack/amulet/deployment.py

@@ -71,7 +71,7 @@ class OpenStackAmuletDeployment(AmuletDeployment):
         base_charms = {
             'mysql': ['precise', 'trusty'],
             'mongodb': ['precise', 'trusty'],
-            'nrpe': ['precise', 'trusty'],
+            'nrpe': ['precise', 'trusty', 'wily', 'xenial'],
         }
 
         for svc in other_services:
@@ -112,7 +112,7 @@ class OpenStackAmuletDeployment(AmuletDeployment):
 
         # Charms which should use the source config option
         use_source = ['mysql', 'mongodb', 'rabbitmq-server', 'ceph',
-                      'ceph-osd', 'ceph-radosgw', 'ceph-mon']
+                      'ceph-osd', 'ceph-radosgw', 'ceph-mon', 'ceph-proxy']
 
         # Charms which can not use openstack-origin, ie. many subordinates
         no_origin = ['cinder-ceph', 'hacluster', 'neutron-openvswitch', 'nrpe',