DataStax Support Forums » Topic: 0 of 4 agents connected

DataStax Support Forums » Topic: 0 of 4 agents connected http://www.datastax.com/support-forums/topic/0-of-4-agents-connected Software, Support, and Training for Apache Cassandra en-US Mon, 20 May 2013 17:10:37 +0000 http://bbpress.org/?v=1.0.3 <![CDATA[Search]]> q http://www.datastax.com/support-forums/search.php GodenYao on "0 of 4 agents connected" http://www.datastax.com/support-forums/topic/0-of-4-agents-connected#post-6792 Sat, 06 Oct 2012 05:22:44 +0000 GodenYao 6792@http://www.datastax.com/support-forums/ after disabling SSL , it works perfectly. thanks! nickmbailey on "0 of 4 agents connected" http://www.datastax.com/support-forums/topic/0-of-4-agents-connected#post-6640 Mon, 24 Sep 2012 15:57:58 +0000 nickmbailey 6640@http://www.datastax.com/support-forums/ The doc here describes changing SSL configuration for OpsCenter: <a href="http://www.datastax.com/docs/opscenter/configure/configure_ssl" rel="nofollow">http://www.datastax.com/docs/opscenter/configure/configure_ssl</a> 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? GodenYao on "0 of 4 agents connected" http://www.datastax.com/support-forums/topic/0-of-4-agents-connected#post-6629 Sun, 23 Sep 2012 19:03:11 +0000 GodenYao 6629@http://www.datastax.com/support-forums/ how do I check SSL setup for my agent communication? tupton on "0 of 4 agents connected" http://www.datastax.com/support-forums/topic/0-of-4-agents-connected#post-6559 Tue, 18 Sep 2012 16:39:34 +0000 tupton 6559@http://www.datastax.com/support-forums/ Have you set up SSL for agent communication? If so, can the agents connect if you disable SSL? GodenYao on "0 of 4 agents connected" http://www.datastax.com/support-forums/topic/0-of-4-agents-connected#post-6550 Tue, 18 Sep 2012 05:39:58 +0000 GodenYao 6550@http://www.datastax.com/support-forums/ 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 -a | egrep 'Proto|LISTEN' Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 *:netbios-ssn *:* LISTEN tcp 0 0 *:42574 *:* LISTEN tcp 0 0 *:52559 *:* LISTEN tcp 0 0 *:sunrpc *:* LISTEN tcp 0 0 localhost:61619 *:* LISTEN tcp 0 0 *:61620 *:* LISTEN tcp 0 0 *:57684 *:* LISTEN tcp 0 0 *:ssh *:* LISTEN tcp 0 0 mars:afs3-fileserver *:* LISTEN tcp 0 0 mars:8888 *:* LISTEN tcp 0 0 localhost:smtp *:* LISTEN tcp 0 0 *:microsoft-ds *:* LISTEN tcp 0 0 *:7199 *:* LISTEN tcp 0 0 *:35456 *:* LISTEN tcp 0 0 *:nfs *:* LISTEN tcp 0 0 *:44866 *:* LISTEN tcp 0 0 mars:9160 *:* LISTEN tcp6 0 0 [::]:rmiregistry [::]:* LISTEN tcp6 0 0 mars:61621 [::]:* LISTEN tcp6 0 0 [::]:ssh [::]:* LISTEN tcp6 0 0 [::]:46617 [::]:* LISTEN tcp6 0 0 ip6-localhost:smtp [::]:* LISTEN Proto RefCnt Flags Type State I-Node Path unix 2 [ ACC ] STREAM LISTENING 5193 /var/run/acpid.socket unix 2 [ ACC ] STREAM LISTENING 5255 /var/run/dbus/system_bus_socket unix 2 [ ACC ] 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. tupton on "0 of 4 agents connected" http://www.datastax.com/support-forums/topic/0-of-4-agents-connected#post-6534 Mon, 17 Sep 2012 16:23:22 +0000 tupton 6534@http://www.datastax.com/support-forums/ 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? GodenYao on "0 of 4 agents connected" http://www.datastax.com/support-forums/topic/0-of-4-agents-connected#post-6516 Sun, 16 Sep 2012 17:42:12 +0000 GodenYao 6516@http://www.datastax.com/support-forums/ 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 []}