Search for	Example	Results
A single word	`cat`	Topics that contain the word "cat". You will also find its grammatical variations, such as "cats".
A phrase. You can specify that the search results contain a specific phrase.	`"cat food"` (quotation marks)	Topics that contain the literal phrase "cat food" and all its grammatical variations. Without the quotation marks, the query is equivalent to specifying an OR operator, which finds topics with one of the individual words instead of the phrase.

Search for	Operator	Example
Two or more words in the same topic	`AND` `and` `+` (plus symbol) `&` (ampersand)	`cat AND dog` `"cat food"+milk` `"cat food"&"dog food"`
Either word in a topic	`OR` `or` `\|` (pipe)	`cat OR dog` `cat \| dog`
Topics that do not contain a specific word or phrase	`NOT` `not` `!` (exclamation point)	`NOT cat` `! dog`
Topics that contain one string and do not contain another	`^` (caret)	`cat ^ mouse`
A combination of search types	`( )` parentheses	`cat + (dog \| mouse)` `cat \| dog + (! mouse)`

Universal DiscoveryContent Pack 28.00 (CP28)

Troubleshooting – Docker Swarm Event Discovery

This section describes troubleshooting for the Docker Swarm Event Discovery.

Check whether the Docker Swarm Event Monitor job works continuously
In the communication log, if the following information is printed out every 30 seconds to indicate the monitor is working, the connection between Data Flow Probe and Docker Swarm is established:
```
<2016-08-24 14:34:02,208> [DEBUG] [JobExecuterWorker-0:Docker Swarm Event Monitor] - Request: http://<docker swarm url>/v1.18/events
```
Check whether connection issues occur between Data Flow Probe and Docker Swarm
In the communication log, if the following information occurs, the connection between Data Flow Probe and Docker Swarmcannot be established:
```
<2016-08-24 15:06:12,624> [DEBUG] [JobExecuterWorker-0:Docker Swarm Event Monitor] - Connection to swarm lost.
```
```
<2016-08-24 15:06:12,624> [DEBUG] [JobExecuterWorker-0:Docker Swarm Event Monitor] - Wait 2 seconds.
```
Note The waiting time will increase two seconds each time until it reaches 30 seconds.