jolokia with hadoop server No access restrictor found, access to any MBean is allowed

[zhaiyuyong]

i have a hiveserver jvm ，i would attach jolokia for jmx monitor  
add -javaagent:/home/master/jolokia-jvm-agent.jar=port=7777,host=0.0.0.0 to start sh，

show
No access restrictor found, access to any MBean is allowed
Jolokia: Agent started with URL http://10.0.250.102:7777/jolokia/

other way
dynamically attach javaagent
java -jar /home/master/jolokia-jvm-agent.jar --host 0.0.0.0 --port 7777 start 28297

show
Couldn't start agent for PID 28297
Possible reason could be that port '7777' is already occupied.
Please check the standard output of the target process for a detailed error message.

[roland]

Look good. What's your question ?

[zhaiyuyong]

my jvm process can not start！

when not add javaagent at start command ，and dynamically attach also print error message

[[e-mail] hiveserver2]$ java -jar /home/master/jolokia-jvm-agent.jar --host 0.0.0.0 --port 7777 start 28297
Couldn't start agent for PID 28297
Possible reason could be that port '7777' is already occupied.
Please check the standard output of the target process for a detailed error message.
[[e-mail] hiveserver2]$ java -jar /home/master/jolokia-jvm-agent.jar --host 0.0.0.0 --port 7777 start 28297
Jolokia is already attached to PID 28297
http://10.0.250.102:7777/jolokia/
[[e-mail] hiveserver2]$

[zhaiyuyong]

if i add javaagent at the start command ，the jvm process can not start

[roland]

Still no question.

Have you checked the hint given, e.g. that the port is probably already occupied ? Try a 'telnet localhost 7777' and if it connects then another process is listening on that port already (probably the one of your first try).

When the message says "Jolokia is already attached to PID 28297" then it is exactly like this.

The "No access restrictor" is not an error message but a warning that you have no security in place. The process started correctly though.