APPLE-313: Ulimit fixes for cloudstack-{agent, management}

Increases/sets ulimit for cloudstack agent and management. This would fix
any issues with opening more files than permissible limit (usually 1024-4096).

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>

packaging/centos63/cloud-agent.rc

@@ -65,7 +65,18 @@ PCP=`ls /usr/share/cloudstack-agent/plugins/*.jar 2>/dev/null | tr '\n' ':' | se
 # AgentShell implements the JSVC daemon methods
 export CLASSPATH="/usr/share/java/commons-daemon.jar:$ACP:$PCP:/etc/cloudstack/agent:/usr/share/cloudstack-common/scripts"
 
+set_ulimit() {
+    fd_limit=`ulimit -n`
+    if [ "$fd_limit" != "65536" ]; then
+        user=`whoami`
+        if [ $user == "root" ]; then
+            ulimit -n 65536
+        fi
+    fi
+}
+
 start() {
+    set_ulimit
     echo -n $"Starting $PROGNAME: "
     if hostname --fqdn >/dev/null 2>&1 ; then
         $JSVC -Djava.io.tmpdir="$TMP" -Xms256m -Xmx2048m -cp "$CLASSPATH" -pidfile "$PIDFILE" \

packaging/centos63/cloud-management.rc

@@ -71,10 +71,10 @@ stop() {
 
 set_ulimit() {
     fd_limit=`ulimit -n`
-    if [ "$fd_limit" != "4096" ]; then
+    if [ "$fd_limit" != "65536" ]; then
         user=`whoami`
         if [ $user == "root" ]; then
-            ulimit -n 4096
+            ulimit -n 65536
         fi
     fi
 }

server/conf/cloudstack-limits.conf.in

@@ -17,5 +17,5 @@
 
 # Specific limits for the CloudStack management server which
 # runs under the user 'cloud' by default
-@MSUSER@ hard nofile 4096
-@MSUSER@ soft nofile 4096
+@MSUSER@ hard nofile 65536
+@MSUSER@ soft nofile 65536