mysql: check if query cache is enabled as a shared function

check_mysqlserver

@@ -187,10 +187,19 @@ function _mysqlrenderdelta() {
 }
 
 # helper function for caching checks
-# The function aborts the check 
+# The function aborts the check ending with OK.
 function _verify_cache(){
-    _mysqlgetvar "have_query_cache" | grep "YES" >/dev/null || ph.abort "Query cache (have_query_cache) is not active"
-    _mysqlgetvar "query_cache_type" | grep "OFF" >/dev/null && ph.abort "Query cache (have_query_cache) is active but query_cache_type is OFF"
+    local bCacheEnabled=
+    _mysqlgetvar "have_query_cache" | grep "YES" >/dev/null
+    if [ $? -ne 0 ]; then
+        _mysqlgetvar "query_cache_type" | grep "OFF" >/dev/null
+        if [ $? -eq 0 ]; then
+            echo "INFO: Query cache (have_query_cache) is active but query_cache_type is OFF."
+        else
+            echo "INFO: Query cache (have_query_cache) is not active."
+        fi
+        ph.exit
+    fi
 }
 # ----------------------------------------------------------------------
 # MAIN