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0 of 4 agents connected

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Started 8 months ago by GodenYao
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GodenYao
Member

i have 4 cassandra nodes (.0,.1,.2,.3).
I installed OpsCenter on .0 and use automatic installation to install agents on .0-.3
I can see ring view, graph, etc. but I m not able to see storage capacity and it shows 0 of 4 agents connected.

I checked opsCenter log and opsCenter-Agent log on node .0
OpsCenter log shows sth like connection timeout or refused.
I check ports are open (7199, 61612, etc.)
--- OpsCenter-Agent Log shows everything normal ----

INFO [qtp905253904-138] 2012-09-16 10:36:38,997 HTTP: :get /cluster/datacenter - 200
INFO [qtp905253904-133] 2012-09-16 10:36:39,001 New JMX connection (127.0.0.1:7199)
INFO [qtp905253904-133] 2012-09-16 10:36:39,009 HTTP: :get /cluster/rack - 200
INFO [qtp905253904-133] 2012-09-16 10:36:39,019 New JMX connection (127.0.0.1:7199)
INFO [qtp905253904-133] 2012-09-16 10:36:39,033 HTTP: :get /cluster/rack - 200
INFO [StompConnection receiver] 2012-09-16 10:37:06,916 Got new config from OpsCenter: {:rollups300_ttl 2419200, :rollups60_ttl 604800, :thrift_port 9160, :metrics_enabled 1, :rollups7200_ttl 31536000, :metrics_ignored_column_families "", :thrift_rpc_interface "10.2.255.0", :jmx_port 7199, :rollups86400_ttl -1, :api_port "61621", :metrics_ignored_solr_cores "", :metrics_ignored_keyspaces "system, OpsCenter", :rollup_subscriptions []}
INFO [qtp905253904-133] 2012-09-16 10:37:11,807 New JMX connection (127.0.0.1:7199)
INFO [qtp905253904-133] 2012-09-16 10:37:11,822 HTTP: :get /cluster/datacenter - 200
INFO [qtp905253904-133] 2012-09-16 10:37:11,849 New JMX connection (127.0.0.1:7199)
INFO [qtp905253904-133] 2012-09-16 10:37:11,855 HTTP: :get /cluster/rack - 200
INFO [StompConnection receiver] 2012-09-16 10:38:16,030 Got new config from OpsCenter: {:rollups300_ttl 2419200, :rollups60_ttl 604800, :thrift_port 9160, :metrics_enabled 1, :rollups7200_ttl 31536000, :metrics_ignored_column_families "", :thrift_rpc_interface "10.2.255.0", :jmx_port 7199, :rollups86400_ttl -1, :api_port "61621", :metrics_ignored_solr_cores "", :metrics_ignored_keyspaces "system, OpsCenter", :rollup_subscriptions []}

Posted 8 months ago #
tupton
Moderator

GodenYao,

It looks like the OpsCenter server can communicate with the agents, but not vice versa. You mentioned that you checked that port 61612 is open, but OpsCenter actually uses 61621. That might just be a typo in your post, but that port must be open. Are all four of the agent logs showing normal operation and no errors, or is it just one?

Posted 8 months ago #
GodenYao
Member

sorry for 61612 that was my typo.
i check .0 (that's the same machine I installed OpsCenter Server) for all open ports. here it is: you can see 61621 is there.

============================ root@mars:~# netstat Proto Recv-Q Send-Q Local Address tcp 0 0 *:netbios-ssn tcp 0 0 *:42574 tcp 0 0 *:52559 tcp 0 0 *:sunrpc tcp 0 0 localhost:61619 tcp 0 0 *:61620 tcp 0 0 *:57684 tcp 0 0 *:ssh tcp 0 0 mars:afs3-fileserver tcp 0 0 mars:8888 tcp 0 0 localhost:smtp tcp 0 0 *:microsoft-ds tcp 0 0 *:7199 tcp 0 0 *:35456 tcp 0 0 *:nfs tcp 0 0 *:44866 tcp 0 0 mars:9160 tcp6 0 0 [::]:rmiregistry tcp6 0 0 mars:61621 tcp6 0 0 [::]:ssh tcp6 0 0 [::]:46617 tcp6 0 0 ip6-localhost:smtp Proto RefCnt Flags unix 2 [ ACC ] unix 2 [ ACC ] unix 2 [ ACC ] =============== =======================
-a | egrep 'Proto|LISTEN'
Foreign Address State
*:* LISTEN
*:* LISTEN
*:* LISTEN
*:* LISTEN
*:* LISTEN
*:* LISTEN
*:* LISTEN
*:* LISTEN
*:* LISTEN
*:* LISTEN
*:* LISTEN
*:* LISTEN
*:* LISTEN
*:* LISTEN
*:* LISTEN
*:* LISTEN
*:* LISTEN
[::]:* LISTEN
[::]:* LISTEN
[::]:* LISTEN
[::]:* LISTEN
[::]:* LISTEN
Type State I-Node Path
STREAM LISTENING 5193 /var/run/acpid.socket
STREAM LISTENING 5255 /var/run/dbus/system_bus_socket
STREAM LISTENING 5289 /var/run/avahi-daemon/socket

i checked .3 's agent log, looks not too much different from the last a few lines as .0(which i posted above).
I may send you all 4 machines' agent log.

Posted 8 months ago #
tupton
Moderator

Have you set up SSL for agent communication? If so, can the agents connect if you disable SSL?

Posted 8 months ago #
GodenYao
Member

how do I check SSL setup for my agent communication?

Posted 7 months ago #
nickmbailey
Key Master

The doc here describes changing SSL configuration for OpsCenter:

http://www.datastax.com/docs/opscenter/configure/configure_ssl

It may also be a problem on the main OpsCenter side. Can you check that log for any errors and possibly paste the contents here?

Posted 7 months ago #
GodenYao
Member

after disabling SSL , it works perfectly.

thanks!

Posted 7 months ago #

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