Here is the answer :
Put the following into a shell script & it would yield the results :
JMXTERM_CMD="get -b org.apache.cassandra.db:type=StorageService -s Load"echo
$JMXTERM_CMD | java -jar /home/xyz/jmxterm-1.0-alpha-4-uber.jar -l
10.32.22.45:7199 -v silent -n
Variables are : -b bean would change based on what you are looking to
monitor
-s Attribute being monitored
/home/xyz/ location where jmxterm jar file is located
-l IP address of C* node & the port configured for JMX
monitoring
Thanks Robert, your example got me going in the right direction.
Hope this helpsJan/
On Thursday, January 29, 2015 5:01 PM, Jan <cne...@yahoo.com> wrote:
Thanks Rob;
here is what I am looking for :
java -jar /home/user/jmxterm-1.0-alpha-4-uber.jar 10.30.41.52:7199 -O
org.apache.cassandra.internal:type=FlushWriter -A CurrentlyBlockedTask
It does Not work since there is something wrong with my syntax. However once
working, it would be scripted to connect to a large cluster from a single host
that would store the results into logs.
Any help with a single working example would greatly help. I am running
circles around this tool for a couple of hrs now.
ThanksJan
On Thursday, January 29, 2015 4:45 PM, Robert Coli <rc...@eventbrite.com>
wrote:
On Thu, Jan 29, 2015 at 3:27 PM, Jan <cne...@yahoo.com> wrote:
I am trying to use JMXterm, a command line based tool to script & monitor C*
cluster.
Would anyone on this forum know the exact syntax to connect to Cassandra Domain
using JMXterm ?
Here's an example from an old JIRA at my shop :
1. Download the jmxterm-1.0-alpha-4-uber.jar from
http://wiki.cyclopsgroup.org/jmxterm2. sudo java -jar
jmxterm-1.0-alpha-4-uber.jar # then within the tool:3. open <pid of cassandra
proc>4. bean org.apache.cassandra.db:type=StorageService # or whichever bean
you're looking for 5. run setLog4jLevel
org.apache.cassandra.db.index.keys.KeySearcher.java DEBUG # example of how to
set log level=Rob
