Small fixes for running Nova services under Apache2

Following fixed were done:
1. Cleanup fixed.
2. API_WORKERS config option was added to nova config templates.
3. Nova API screen tabs were named as nova-api and nova-ec2-api.

Change-Id: I68dc6fd6c8aeffcec7f9039afd63bd1599c65682

Author: mhorban

files/apache-nova-api.template

@@ -1,7 +1,7 @@
 Listen %PUBLICPORT%
 
 <VirtualHost *:%PUBLICPORT%>
-    WSGIDaemonProcess nova-api processes=5 threads=1 user=%USER% display-name=%{GROUP} %VIRTUALENV%
+    WSGIDaemonProcess nova-api processes=%APIWORKERS% threads=1 user=%USER% display-name=%{GROUP} %VIRTUALENV%
     WSGIProcessGroup nova-api
     WSGIScriptAlias / %PUBLICWSGI%
     WSGIApplicationGroup %{GLOBAL}
@@ -13,4 +13,4 @@ Listen %PUBLICPORT%
     %SSLENGINE%
     %SSLCERTFILE%
     %SSLKEYFILE%
-</VirtualHost>
+</VirtualHost>

files/apache-nova-ec2-api.template

@@ -1,7 +1,7 @@
 Listen %PUBLICPORT%
 
 <VirtualHost *:%PUBLICPORT%>
-    WSGIDaemonProcess nova-ec2-api processes=5 threads=1 user=%USER% display-name=%{GROUP} %VIRTUALENV%
+    WSGIDaemonProcess nova-ec2-api processes=%APIWORKERS% threads=1 user=%USER% display-name=%{GROUP} %VIRTUALENV%
     WSGIProcessGroup nova-ec2-api
     WSGIScriptAlias / %PUBLICWSGI%
     WSGIApplicationGroup %{GLOBAL}
@@ -13,4 +13,4 @@ Listen %PUBLICPORT%
     %SSLENGINE%
     %SSLCERTFILE%
     %SSLKEYFILE%
-</VirtualHost>
+</VirtualHost>

lib/nova

@@ -232,6 +232,10 @@ function cleanup_nova {
     #if is_service_enabled n-cpu && [[ -r $NOVA_PLUGINS/hypervisor-$VIRT_DRIVER ]]; then
     #    cleanup_nova_hypervisor
     #fi
+
+    if [ "$NOVA_USE_MOD_WSGI" == "True" ]; then
+        _cleanup_nova_apache_wsgi
+    fi
 }
 
 # _cleanup_nova_apache_wsgi() - Remove wsgi files, disable and remove apache vhost file
@@ -277,6 +281,7 @@ function _config_nova_apache_wsgi {
         s|%SSLKEYFILE%|$nova_keyfile|g;
         s|%USER%|$STACK_USER|g;
         s|%VIRTUALENV%|$venv_path|g
+        s|%APIWORKERS%|$API_WORKERS|g
     " -i $nova_apache_conf
 
     sudo cp $FILES/apache-nova-ec2-api.template $nova_ec2_apache_conf
@@ -289,6 +294,7 @@ function _config_nova_apache_wsgi {
         s|%SSLKEYFILE%|$nova_keyfile|g;
         s|%USER%|$STACK_USER|g;
         s|%VIRTUALENV%|$venv_path|g
+        s|%APIWORKERS%|$API_WORKERS|g
     " -i $nova_ec2_apache_conf
 }
 
@@ -761,8 +767,8 @@ function start_nova_api {
         enable_apache_site nova-api
         enable_apache_site nova-ec2-api
         restart_apache_server
-        tail_log nova /var/log/$APACHE_NAME/nova-api.log
-        tail_log nova /var/log/$APACHE_NAME/nova-ec2-api.log
+        tail_log nova-api /var/log/$APACHE_NAME/nova-api.log
+        tail_log nova-ec2-api /var/log/$APACHE_NAME/nova-ec2-api.log
     else
         run_process n-api "$NOVA_BIN_DIR/nova-api"
     fi