DataStax Support Forums » User Favorites: saurabh

DataStax Support Forums » User Favorites: saurabh saurabh Software, Support, and Training for Apache Cassandra en-US Sat, 18 May 2013 16:46:43 +0000 http://bbpress.org/?v=1.0.3 <![CDATA[Search]]> q http://www.datastax.com/support-forums/search.php nickmbailey on "0 of 2 agents connected" http://www.datastax.com/support-forums/topic/0-of-2-agents-connected/page/2#post-8165 Thu, 27 Dec 2012 18:16:15 +0000 nickmbailey 8165@http://www.datastax.com/support-forums/ That is a known bug at the moment. Manually killing the java process should stop the service. Sorry for the inconvenience. mchou on "0 of 2 agents connected" http://www.datastax.com/support-forums/topic/0-of-2-agents-connected/page/2#post-8158 Thu, 27 Dec 2012 15:09:20 +0000 mchou 8158@http://www.datastax.com/support-forums/ Hi, I follow Robin Schumacher's article "How to Setup and Monitor a Multi-Node Cassandra Cluster on Windows" on Winodows 7. I got an error message when I stop the Ops_Center_Agent service - "Windows could not stop the DataStax_OpsCenter_Agent service on Local Computer. Error 1053: The service did not respond to the start or control request in a timely fashion." I reboot my laptop and try again, the same error message. I have no trouble to stop the other two DataStax service. Any suggestions? Regards, Marco nickmbailey on "Error while adding a new node in the existing cluster of 2 nodes (windows platform)" http://www.datastax.com/support-forums/topic/error-while-adding-a-new-node-in-the-existing-cluster-of-2-nodes-windows-platform#post-6683 Wed, 26 Sep 2012 16:57:45 +0000 nickmbailey 6683@http://www.datastax.com/support-forums/ Saurabh, I'm responding here, but this response is applicable to all of your recent posts. They are all indicating the same problem. Either Cassandra is not running on your machines or for some reason OpsCenter can not connect to it. A couple of things you should try: 1) Can you use the cassandra-cli or cqlsh tools to connect to cassandra? 2) Did you change any port or interface settings in your cassandra configuration? 3) Can you check the cassandra log file for any errors there? 4) Have you tried restarting the cassandra process? -Nick Saurabh on "getting hector API error not able to connect to cassandra" http://www.datastax.com/support-forums/topic/getting-hector-api-error-not-able-to-connect-to-cassandra#post-6597 Thu, 20 Sep 2012 12:45:41 +0000 Saurabh 6597@http://www.datastax.com/support-forums/ getting error In opscenter-agent-stdout.log ERROR [Thread-4] 2012-09-20 18:13:05,398 Unable to connect to Cassandra #<HectorException me.prettyprint.hector.api.exceptions.HectorException: All host pools marked down. Retry burden pushed out to client.> opscenter UI is not working perfectly unable to get matrices Saurabh on "Error loading scheduled backups: Scheduled jobs have not been loaded yet. There may be a connectivit" http://www.datastax.com/support-forums/topic/error-loading-scheduled-backups-scheduled-jobs-have-not-been-loaded-yet-there-may-be-a-connectivit#post-6596 Thu, 20 Sep 2012 12:37:51 +0000 Saurabh 6596@http://www.datastax.com/support-forums/ getting error while opening the data backup tab in opscenter UI(windows platform) "Error loading scheduled backups: Scheduled jobs have not been loaded yet. There may be a connectivity problem with Cassandra." Saurabh on "Error while adding a new node in the existing cluster of 2 nodes (windows platform)" http://www.datastax.com/support-forums/topic/error-while-adding-a-new-node-in-the-existing-cluster-of-2-nodes-windows-platform#post-6595 Thu, 20 Sep 2012 12:29:40 +0000 Saurabh 6595@http://www.datastax.com/support-forums/ yes cassandra service is running on all the nodes . Saurabh on "Error saving backup: 'NoneType' object does not support item assignment" http://www.datastax.com/support-forums/topic/error-saving-backup-nonetype-object-does-not-support-item-assignment#post-6594 Thu, 20 Sep 2012 12:27:37 +0000 Saurabh 6594@http://www.datastax.com/support-forums/ I am getting this error in the Data Backups section of UI of opscenter (windows platform) earlier I have scheduled a backup for one of my column family. Now I am getting this error. also when I open the backup tab I get this error. "Error loading scheduled backups: Scheduled jobs have not been loaded yet. There may be a connectivity problem with Cassandra." nickmbailey on "Error while adding a new node in the existing cluster of 2 nodes (windows platform)" http://www.datastax.com/support-forums/topic/error-while-adding-a-new-node-in-the-existing-cluster-of-2-nodes-windows-platform#post-6414 Tue, 11 Sep 2012 15:25:18 +0000 nickmbailey 6414@http://www.datastax.com/support-forums/ That log indicates that cassandra is not running. Are you sure the cassandra process is running on all nodes? For information on token generation see: <a href="http://www.datastax.com/docs/1.1/initialize/token_generation" rel="nofollow">http://www.datastax.com/docs/1.1/initialize/token_generation</a> nickmbailey on "0 of 2 agents connected" http://www.datastax.com/support-forums/topic/0-of-2-agents-connected#post-6413 Tue, 11 Sep 2012 15:23:41 +0000 nickmbailey 6413@http://www.datastax.com/support-forums/ That error in the log means it can not connect to the agent on that machine. It shouldn't affect the UI however. Did you change the 'interface' property in the opscenter conf file? You will need to update that to be '0.0.0.0' or '<ip of machine>' before you can access the web interface from an external host. thobbs on "Getting error while trying to access database from webpage" http://www.datastax.com/support-forums/topic/getting-error-while-trying-to-access-database-from-webpage#post-6348 Sat, 08 Sep 2012 00:12:29 +0000 thobbs 6348@http://www.datastax.com/support-forums/ The logs at INFO indicate that OpsCenter cannot connect to your nodes using Thrift. I suspect your cluster may not be totally healthy. Can you run nodetool ring against each node in the cluster and paste the results? Saurabh on "Getting error while trying to access database from webpage" http://www.datastax.com/support-forums/topic/getting-error-while-trying-to-access-database-from-webpage#post-6326 Fri, 07 Sep 2012 08:39:56 +0000 Saurabh 6326@http://www.datastax.com/support-forums/ 1 node's agent is not connected rest 2 are connected . can you explain what this INFO is about [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 186.0 seconds.) Anonymous on "Getting error while trying to access database from webpage" http://www.datastax.com/support-forums/topic/getting-error-while-trying-to-access-database-from-webpage#post-6325 Fri, 07 Sep 2012 07:43:49 +0000 Anonymous 6325@http://www.datastax.com/support-forums/ any changes? Saurabh on "Getting error while trying to access database from webpage" http://www.datastax.com/support-forums/topic/getting-error-while-trying-to-access-database-from-webpage#post-6320 Fri, 07 Sep 2012 05:25:33 +0000 Saurabh 6320@http://www.datastax.com/support-forums/ Hi , I have a cluster of 3 nodes out of which 1 node's agent is node connected . 2 agents are connected when I am accessing the data explorer I am getting Unavailable exception pop up. opsecenterd.log shows 2012-09-07 10:07:26+0530 [] INFO: reactor class: twisted.internet.selectreactor.SelectReactor. 2012-09-07 10:07:26+0530 [] INFO: Logging level set to 'info' 2012-09-07 10:07:26+0530 [] INFO: OpsCenterdService startService 2012-09-07 10:07:26+0530 [] INFO: OpsCenter version: 2.1.1 2012-09-07 10:07:26+0530 [] INFO: Compatible agent version: 2.9 2012-09-07 10:07:26+0530 [] INFO: Loading per-cluster config file C:\Program Files\DataStax Community\opscenter\conf\clusters\local.conf 2012-09-07 10:07:27+0530 [] INFO: HTTP BASIC authentication disabled 2012-09-07 10:07:27+0530 [] INFO: Starting webserver with ssl disabled. 2012-09-07 10:07:27+0530 [] INFO: SSL disabled 2012-09-07 10:07:27+0530 [] INFO: opscenterd.WebServer.OpsCenterdWebServer starting on 8888 2012-09-07 10:07:27+0530 [] INFO: Starting factory <opscenterd.WebServer.OpsCenterdWebServer instance at 0x02A07260> 2012-09-07 10:07:27+0530 [] INFO: morbid.morbid.StompFactory starting on 61619 2012-09-07 10:07:27+0530 [] INFO: Starting factory <morbid.morbid.StompFactory instance at 0x02A2D9E0> 2012-09-07 10:07:41+0530 [] INFO: OS Version: Microsoft Windows 7 Enterprise |C:\Windows|\Device\Harddisk0\Partition1 2012-09-07 10:07:41+0530 [] INFO: Cpu Info: 2900 MHz, 2 cores, 2 procs 2012-09-07 10:07:41+0530 [] INFO: Mem Info: 2048 MB 2012-09-07 10:07:41+0530 [] INFO: Configuring agent communication with ssl support disabled. 2012-09-07 10:07:41+0530 [] INFO: morbid.morbid.StompFactory starting on 61620 2012-09-07 10:07:41+0530 [local] INFO: Starting services for cluster local 2012-09-07 10:07:42+0530 [local] INFO: Starting CassandraCluster service 2012-09-07 10:07:42+0530 [local] INFO: agent_config items: {'rollups60_ttl': 604800, 'thrift_port': 9160, 'rollups7200_ttl': 31536000, 'rollups300_ttl': 2419200, 'rollups86400_ttl': -1, 'metrics_ignored_solr_cores': '', 'api_port': '61621', 'metrics_enabled': 1, 'metrics_ignored_column_families': '', 'metrics_ignored_keyspaces': 'system, OpsCenter'} 2012-09-07 10:07:42+0530 [local] INFO: Starting PushService 2012-09-07 10:07:48+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 1 pending requests. Expected candidate node retry in 0.2 seconds.) 2012-09-07 10:07:48+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 1 pending requests. Expected candidate node retry in 0.2 seconds.) 2012-09-07 10:07:48+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 1 pending requests. Expected candidate node retry in 0.2 seconds.) 2012-09-07 10:07:48+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 1 pending requests. Expected candidate node retry in 0.2 seconds.) 2012-09-07 10:07:48+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 1 pending requests. Expected candidate node retry in 0.2 seconds.) 2012-09-07 10:07:49+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 0.5 seconds.) 2012-09-07 10:07:49+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 0.5 seconds.) 2012-09-07 10:07:49+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 0.5 seconds.) 2012-09-07 10:07:49+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 0.5 seconds.) 2012-09-07 10:07:49+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 0.5 seconds.) 2012-09-07 10:07:50+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 1.2 seconds.) 2012-09-07 10:07:50+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 1.2 seconds.) 2012-09-07 10:07:50+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 1.2 seconds.) 2012-09-07 10:07:50+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 1.2 seconds.) 2012-09-07 10:07:50+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 1.2 seconds.) 2012-09-07 10:07:53+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 3.7 seconds.) 2012-09-07 10:07:53+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 3.7 seconds.) 2012-09-07 10:07:53+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 3.7 seconds.) 2012-09-07 10:07:53+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 3.7 seconds.) 2012-09-07 10:07:53+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 3.7 seconds.) 2012-09-07 10:07:57+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 11.5 seconds.) 2012-09-07 10:07:57+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 11.5 seconds.) 2012-09-07 10:07:57+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 11.5 seconds.) 2012-09-07 10:07:57+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 11.5 seconds.) 2012-09-07 10:07:57+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 11.5 seconds.) 2012-09-07 10:08:10+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 33.9 seconds.) 2012-09-07 10:08:10+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 33.9 seconds.) 2012-09-07 10:08:10+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 33.9 seconds.) 2012-09-07 10:08:10+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 33.9 seconds.) 2012-09-07 10:08:10+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 33.9 seconds.) 2012-09-07 10:08:45+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 68.3 seconds.) 2012-09-07 10:08:45+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 68.3 seconds.) 2012-09-07 10:08:45+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 68.3 seconds.) 2012-09-07 10:08:45+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 68.3 seconds.) 2012-09-07 10:08:45+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 68.3 seconds.) 2012-09-07 10:09:54+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 186.0 seconds.) 2012-09-07 10:09:54+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 186.0 seconds.) 2012-09-07 10:09:54+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 186.0 seconds.) 2012-09-07 10:09:54+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 186.0 seconds.) 2012-09-07 10:09:54+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 186.0 seconds.) Saurabh on "Error while adding a new node in the existing cluster of 2 nodes (windows platform)" http://www.datastax.com/support-forums/topic/error-while-adding-a-new-node-in-the-existing-cluster-of-2-nodes-windows-platform#post-6303 Thu, 06 Sep 2012 13:12:56 +0000 Saurabh 6303@http://www.datastax.com/support-forums/ Also how to generate new tokens for more than 2 machines Saurabh on "Error while adding a new node in the existing cluster of 2 nodes (windows platform)" http://www.datastax.com/support-forums/topic/error-while-adding-a-new-node-in-the-existing-cluster-of-2-nodes-windows-platform#post-6302 Thu, 06 Sep 2012 12:30:23 +0000 Saurabh 6302@http://www.datastax.com/support-forums/ Hi, I have setup a 2 node cluster in datastax community (windows) named Test cluster I am adding a new node to the cluster after making all the changes the primary machine UI shows 3 nodes and 2 of 3 agents connected not able to connect the agent of this third node . opscenterd.log file shows 2012-09-06 16:55:37+0530 [] Problem while calling InspectKeyspaceController Traceback (most recent call last): Failure: opscenterd.CassandraService.NoCassandraConnection: No Cassandra connections available 2012-09-06 16:55:37+0530 [] Problem while calling GetFiredAlertsController Traceback (most recent call last): File "C:\Program Files\DataStax Community\opscenter\lib\py-win32\2.7\twisted\web\resource.py", line 210, in render return m(request) File "build/lib/python2.7/site-packages/opscenterd/TwistedRouter.py", line 220, in _render File "C:\Program Files\DataStax Community\opscenter\lib\py-win32\2.7\twisted\internet\defer.py", line 1141, in unwindGenerator return _inlineCallbacks(None, f(*args, **kwargs), Deferred()) File "C:\Program Files\DataStax Community\opscenter\lib\py-win32\2.7\twisted\internet\defer.py", line 1020, in _inlineCallbacks result = g.send(result) --- <exception caught here> --- File "build/lib/python2.7/site-packages/opscenterd/TwistedRouter.py", line 185, in doCall File "build/lib/python2.7/site-packages/opscenterd/WebServer.py", line 921, in GetFiredAlertsController File "build/lib/python2.7/site-packages/opscenterd/alerts/AlertService.py", line 75, in describeFiredAlerts File "build/lib/python2.7/site-packages/opscenterd/alerts/AlertService.py", line 45, in _assert_loaded opscenterd.alerts.AlertService.AlertsNotLoaded: Alerts have not been loaded yet. There may be a connectivity problem with Cassandra. 2012-09-06 16:55:52+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 52.3 seconds.) 2012-09-06 16:55:52+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 52.3 seconds.) 2012-09-06 16:55:52+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 52.3 seconds.) 2012-09-06 16:55:52+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 52.3 seconds.) 2012-09-06 16:55:52+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 52.3 seconds.) 2012-09-06 16:56:46+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 173.7 seconds.) 2012-09-06 16:56:46+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 173.7 seconds.) 2012-09-06 16:56:46+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 173.7 seconds.) 2012-09-06 16:56:46+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 173.7 seconds.) 2012-09-06 16:56:46+0530 [local] INFO: (No candidate nodes to expand pool to target size 5 from 0; there are 0 pending requests. Expected candidate node retry in 173.7 seconds.) 2012-09-06 16:58:09+0530 [] Problem while calling GetFiredAlertsController Traceback (most recent call last): File "C:\Program Files\DataStax Community\opscenter\lib\py-win32\2.7\twisted\web\resource.py", line 210, in render return m(request) File "build/lib/python2.7/site-packages/opscenterd/TwistedRouter.py", line 220, in _render File "C:\Program Files\DataStax Community\opscenter\lib\py-win32\2.7\twisted\internet\defer.py", line 1141, in unwindGenerator return _inlineCallbacks(None, f(*args, **kwargs), Deferred()) File "C:\Program Files\DataStax Community\opscenter\lib\py-win32\2.7\twisted\internet\defer.py", line 1020, in _inlineCallbacks result = g.send(result) --- <exception caught here> --- File "build/lib/python2.7/site-packages/opscenterd/TwistedRouter.py", line 185, in doCall File "build/lib/python2.7/site-packages/opscenterd/WebServer.py", line 921, in GetFiredAlertsController File "build/lib/python2.7/site-packages/opscenterd/alerts/AlertService.py", line 75, in describeFiredAlerts File "build/lib/python2.7/site-packages/opscenterd/alerts/AlertService.py", line 45, in _assert_loaded opscenterd.alerts.AlertService.AlertsNotLoaded: Alerts have not been loaded yet. There may be a connectivity problem with Cassandra. 2012-09-06 16:58:09+0530 [] Problem while calling GetFiredAlertsController Traceback (most recent call last): File "C:\Program Files\DataStax Community\opscenter\lib\py-win32\2.7\twisted\web\resource.py", line 210, in render return m(request) File "build/lib/python2.7/site-packages/opscenterd/TwistedRouter.py", line 220, in _render File "C:\Program Files\DataStax Community\opscenter\lib\py-win32\2.7\twisted\internet\defer.py", line 1141, in unwindGenerator return _inlineCallbacks(None, f(*args, **kwargs), Deferred()) File "C:\Program Files\DataStax Community\opscenter\lib\py-win32\2.7\twisted\internet\defer.py", line 1020, in _inlineCallbacks result = g.send(result) --- <exception caught here> --- File "build/lib/python2.7/site-packages/opscenterd/TwistedRouter.py", line 185, in doCall File "build/lib/python2.7/site-packages/opscenterd/WebServer.py", line 921, in GetFiredAlertsController File "build/lib/python2.7/site-packages/opscenterd/alerts/AlertService.py", line 75, in describeFiredAlerts File "build/lib/python2.7/site-packages/opscenterd/alerts/AlertService.py", line 45, in _assert_loaded opscenterd.alerts.AlertService.AlertsNotLoaded: Alerts have not been loaded yet. There may be a connectivity problem with Cassandra. 2012-09-06 16:58:09+0530 [] Problem while calling InspectKeyspaceController Traceback (most recent call last): Failure: opscenterd.CassandraService.NoCassandraConnection: No Cassandra connections available