only run certain code if th respective service has been enabled

stack.sh

@@ -38,7 +38,7 @@ NOVNC_DIR=$DEST/noVNC
 MUNIN_DIR=$DEST/openstack-munin
 
 # Specify which services to launch.  These generally correspond to screen tabs
-ENABLED_SERVICES=${ENABLED_SERVICES:-g-api,g-reg,key,n-api,n-cpu,n-net,n-sch,n-vnc,dash}
+ENABLED_SERVICES=${ENABLED_SERVICES:-g-api,g-reg,key,n-api,n-cpu,n-net,n-sch,n-vnc,dash,mysql,rabbit}
 
 # Use the first IP unless an explicit is set by ``HOST_IP`` environment variable
 if [ ! -n "$HOST_IP" ]; then
@@ -130,17 +130,6 @@ cd $API_DIR; sudo python setup.py develop
 cd $DASH_DIR/django-openstack; sudo python setup.py develop
 cd $DASH_DIR/openstack-dashboard; sudo python setup.py develop
 
-# attempt to load modules: kvm (hardware virt) and nbd (network block 
-# device - used to manage qcow images)
-sudo modprobe nbd || true
-sudo modprobe kvm || true
-# user needs to be member of libvirtd group for nova-compute to use libvirt
-sudo usermod -a -G libvirtd `whoami`
-# if kvm wasn't running before we need to restart libvirt to enable it
-sudo /etc/init.d/libvirt-bin restart
-
-## FIXME(ja): should LIBVIRT_TYPE be kvm if kvm module is loaded?
-
 # add useful screenrc
 cp $DIR/files/screenrc ~/.screenrc
 
@@ -155,6 +144,7 @@ cp $DIR/files/screenrc ~/.screenrc
 # Dash currently imports quantum even if you aren't using it.  Instead 
 # of installing quantum we can create a simple module that will pass the 
 # initial imports
+if [[ "$ENABLED_SERVICES" =~ "dash" ]]; then
     sudo mkdir -p  $DASH_DIR/openstack-dashboard/quantum || true
     sudo touch $DASH_DIR/openstack-dashboard/quantum/__init__.py
     sudo touch $DASH_DIR/openstack-dashboard/quantum/client.py
@@ -174,17 +164,27 @@ sudo sed -e "s,%DASH_DIR%,$DASH_DIR,g" -i /etc/apache2/sites-enabled/000-default
     # others by the original owner.  We need to change the owner to apache so
     # dashboard can run
     sudo chown -R www-data:www-data $DASH_DIR
+fi
 
+
+# Mysql
+# ---------
+#
+if [[ "$ENABLED_SERVICES" =~ "mysql" ]]; then
     # Update the DB to give user ‘$MYSQL_USER’@’%’ full control of the all databases:
     sudo mysql -uroot -p$MYSQL_PASS -e "GRANT ALL PRIVILEGES ON *.* TO '$MYSQL_USER'@'%' identified by '$MYSQL_PASS';"
 
     # Edit /etc/mysql/my.cnf to change ‘bind-address’ from localhost (127.0.0.1) to any (0.0.0.0) and restart the mysql service:
     sudo sed -i 's/127.0.0.1/0.0.0.0/g' /etc/mysql/my.cnf
     sudo service mysql restart
+fi
+
 
 # Munin
 # -----
 
+
+if [[ "$ENABLED_SERVICES" =~ "munin" ]]; then
     # allow connections from other hosts
     sudo sed -i -e '/Allow from localhost/s/localhost.*$/all/' /etc/munin/apache.conf
 
@@ -196,7 +196,6 @@ user `whoami`
 user `whoami`
 EOF
     sudo mv /tmp/nova /etc/munin/plugin-conf.d/nova
-
     # configure Munin for Nova plugins
     PLUGINS="keystone_stats nova_floating_ips nova_instance_launched nova_instance_ nova_instance_timing nova_services"
     for i in $PLUGINS; do
@@ -205,10 +204,12 @@ for i in $PLUGINS; do
     done
     sudo mv /etc/munin/plugins/nova_instance_ /etc/munin/plugins/nova_instance_launched
     sudo restart munin-node
+fi
 
 # Glance
 # ------
 
+if [[ "$ENABLED_SERVICES" =~ "g-reg" ]]; then
     # Glance uses ``/var/lib/glance`` and ``/var/log/glance`` by default, so
     # we need to insure that our user has permissions to use them.
     sudo mkdir -p /var/log/glance
@@ -225,6 +226,7 @@ mysql -u$MYSQL_USER -p$MYSQL_PASS -e 'CREATE DATABASE glance;'
     GLANCE_CONF=$GLANCE_DIR/etc/glance-registry.conf
     cp $DIR/files/glance-registry.conf $GLANCE_CONF
     sudo sed -e "s,%SQL_CONN%,$BASE_SQL_CONN/glance,g" -i $GLANCE_CONF
+fi
 
 # Nova
 # ----
@@ -260,6 +262,19 @@ fi
 screen -d -m -S nova -t nova
 sleep 1
 
+if [[ "$ENABLED_SERVICES" =~ "n-cpu" ]]; then
+
+    # attempt to load modules: kvm (hardware virt) and nbd (network block 
+    # device - used to manage qcow images)
+    sudo modprobe nbd || true
+    sudo modprobe kvm || true
+    # user needs to be member of libvirtd group for nova-compute to use libvirt
+    sudo usermod -a -G libvirtd `whoami`
+    # if kvm wasn't running before we need to restart libvirt to enable it
+    sudo /etc/init.d/libvirt-bin restart
+
+    ## FIXME(ja): should LIBVIRT_TYPE be kvm if kvm module is loaded?
+
     # setup nova instance directory
     mkdir -p $NOVA_DIR/instances
 
@@ -273,12 +288,16 @@ fi
 
     # Clean out the instances directory
     rm -rf $NOVA_DIR/instances/*
+fi
 
+if [[ "$ENABLED_SERVICES" =~ "n-net" ]]; then
     # delete traces of nova networks from prior runs
     killall dnsmasq || true
     rm -rf $NOVA_DIR/networks
     mkdir -p $NOVA_DIR/networks
+fi
 
+if [[ "$ENABLED_SERVICES" =~ "mysql" ]]; then
     # (re)create nova database
     mysql -u$MYSQL_USER -p$MYSQL_PASS -e 'DROP DATABASE nova;' || true
     mysql -u$MYSQL_USER -p$MYSQL_PASS -e 'CREATE DATABASE nova;'
@@ -289,10 +308,12 @@ $NOVA_DIR/bin/nova-manage network create private $FIXED_RANGE 1 32
 
     # create some floating ips
     $NOVA_DIR/bin/nova-manage floating create $FLOATING_RANGE
+fi
 
 # Keystone
 # --------
 
+if [[ "$ENABLED_SERVICES" =~ "key" ]]; then
     # (re)create keystone database
     mysql -u$MYSQL_USER -p$MYSQL_PASS -e 'DROP DATABASE keystone;' || true
     mysql -u$MYSQL_USER -p$MYSQL_PASS -e 'CREATE DATABASE keystone;'
@@ -304,6 +325,7 @@ sudo sed -e "s,%SQL_CONN%,$BASE_SQL_CONN/keystone,g" -i $KEYSTONE_CONF
 
     # initialize keystone with default users/endpoints
     BIN_DIR=$KEYSTONE_DIR/bin bash $DIR/files/keystone_data.sh
+fi
 
 
 # Launch Services
@@ -324,9 +346,7 @@ function screen_it {
 
 screen_it g-api "cd $GLANCE_DIR; bin/glance-api --config-file=etc/glance-api.conf"
 screen_it g-reg "cd $GLANCE_DIR; bin/glance-registry --config-file=etc/glance-registry.conf"
-# keystone drops a keystone.log where if it is run, so change the path to
+screen_it key "$KEYSTONE_DIR/bin/keystone --config-file $KEYSTONE_CONF"
-# where it can write
-screen_it key "cd /tmp; $KEYSTONE_DIR/bin/keystone --config-file $KEYSTONE_CONF"
 screen_it n-api "$NOVA_DIR/bin/nova-api"
 screen_it n-cpu "$NOVA_DIR/bin/nova-compute"
 screen_it n-net "$NOVA_DIR/bin/nova-network"
@@ -338,9 +358,9 @@ screen_it dash "sudo /etc/init.d/apache2 restart; sudo tail -f /var/log/apache2/
 # Install Images
 # ==============
 
+if [[ "$ENABLED_SERVICES" =~ "g-reg" ]]; then
     # Downloads a tty image (ami/aki/ari style), then extracts it.  Upon extraction 
     # we upload to glance with the glance cli tool.
-
     mkdir -p $DEST/images
     cd $DEST/images
     if [ ! -f $DEST/tty.tgz ]; then
@@ -355,3 +375,4 @@ tar -zxf $DEST/tty.tgz
     glance add name="tty-kernel" is_public=true container_format=aki disk_format=aki < aki-tty/image 
     glance add name="tty-ramdisk" is_public=true container_format=ari disk_format=ari < ari-tty/image 
     glance add name="tty" is_public=true container_format=ami disk_format=ami kernel_id=1 ramdisk_id=2 < ami-tty/image
+fi