Steps taken:
1. I installed the log parser plugin,
2. Setup my rules file on the master.
3. created a job/build to run on a slave
4. For this job, setup post-build actions with console output log parsing
5. mark build failed on error
6. Use global rules
7. selected my rule file.

When I execute the job, the job runs successfully however the log parsing failed.
Clicking on the Parsed Console Output option, I get the following.

ERROR: Failed to parse console log
java.io.IOException: Remote call on centos7 failed

So it looks like the log parser plugin cannot communicate with the slave node to get log output.

Please help, this is so frustrating when things don't work as they should.

Below is the output of the error in the jenkins.log

Oct 08, 2016 11:13:36 AM hudson.plugins.logparser.LogParserPublisher perform
SEVERE: log-parser plugin ERROR: Cannot parse log POCProject/TestJob #19
java.io.IOException: Remote call on centos7 failed
at hudson.remoting.Channel.call(Channel.java:789)
at hudson.plugins.logparser.LogParserStatusComputer.computeStatusMatches(LogParserStatusComputer.java:47)
at hudson.plugins.logparser.LogParserStatusComputer.<init>(LogParserStatusComputer.java:36)