perfSONAR User Q&A and Other Discussion

[Zhiyan Zheng <>]

Hi Andy and Ivan,

Thanks for your kind replies,

# ls -alt /var/run/cassandra/cassandra.pid 

-rw-r--r-- 1 cassandra cassandra 5 Aug  7 10:00 /var/run/cassandra/cassandra.pid

# more /var/log/cassandra/cassandra.log 

Error occurred during initialization of VM

Could not reserve enough space for object heap

Error: Could not create the Java Virtual Machine.

Error: A fatal exception has occurred. Program will exit.

# more /var/log/cassandra/system.log

/var/log/cassandra/system.log: No such file or directory

Thanks,

Zhiyan Zheng

From: Andrew Lake <>
Date: Thursday, August 6, 2015 at 6:12 PM
To: "GarnizovIvan (RRZE)" <>
Cc: <>, Zhiyan Zheng <>
Subject: RE: [perfsonar-user] About perfSONAR toolkits 3.4.2 Throughput / Latency Graphs problem

Hi,

The problem actually appears to be that cassandra is dying shortly after restart. Touching the pid is likely not going to help. A restart is just a “stop” then a “start”. The stop is failing because cassandra is already down so it the proceeds to try and start it. Could you send /var/log/cassandra/cassandra.log and /var/log/cassandra/system.log?

Thanks,

Andy

On Thu, Aug 6, 2015 at 1:20 AM, Garnizov, Ivan (RRZE) <> wrote:

Hi Zhiyan,

 

Nice to have you back and hope you are doing well.

For this issue, please touch the folder and the file /var/run/cassandra/cassandra.pid  with for owner cassandra:cassandra and make it writable only by the owner.

 

Please also point us to the netinstall image you used!

 

Best regards,

Ivan

 

From: [] On Behalf Of zhzhy
Sent: Donnerstag, 6. August 2015 04:55
To:
Subject: [perfsonar-user] About perfSONAR toolkits 3.4.2 Throughput / Latency Graphs problem

 

Hi all，

I installed PS toolkits 3.4.2 by netinstall ISO image, when I add a new schedule test, there is nothing for the result, I got Error retrieving test data: undefined.

And when I try to restart the services of cassandra, I got the messages as:

# service cassandra restart

Shutdown Cassandra: bash: line 0: kill: (12239) - No such process

ERROR: could not stop cassandra: cassandra dead but pid file exists

Starting Cassandra: OK

# service cassandra status

cassandra dead but pid file exists



# service cassandra restart

Shutdown Cassandra: cat: /var/run/cassandra/cassandra.pid: No such file or directory

kill: usage: kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or kill -l [sigspec]

ERROR: could not stop cassandra: cassandra dead but subsys locked

Do anybody have idea about this problem?

Best Regards,

Zhiyan Zheng