For anyone following at home, the problem had something to do with the fact that I was accessing opscenter through a proxy. Not sure exactly what went wrong - rather than try to debug it I'm just going to move it and enable authentication.
On Tue, Dec 2, 2014 at 6:33 PM, Nick Bailey <n...@datastax.com> wrote: > Often this is caused by the agent version not matching the OpsCenter > version. Unfortunately the UI currently reports a version mismatch as 'not > installed'. Can you check the versions of your OpsCenter and agent installs? > > On Tue, Dec 2, 2014 at 5:06 PM, Nikolai Grigoriev <ngrigor...@gmail.com> > wrote: > >> I have observed this kind of situation with 0 agents connected. >> Restarting the agents always helped so far. By the way, check the agent's >> logs and opscenterd logs, there may be some clues there. >> >> On Tue, Dec 2, 2014 at 4:59 PM, Ian Rose <ianr...@fullstory.com> wrote: >> >>> Hi all - >>> >>> Just getting started setting up OpsCenter today. I have a 3 node >>> cassandra cluster and (afaict) the agent installed and running happily on >>> all 3 nodes. I also have OpsCenter up and running on a 4th node. I do not >>> have SSL enabled between these nodes. >>> >>> In the OpsCenter interface, I see "0 of 0 agents connected" and >>> restarting OpsCenter does not change this. However, in my cluster settings >>> I have the following entered for the "least one host / IP in the cluster" >>> portion, and these hostnames are all resolvable/pingable from the OpsCenter >>> machine. >>> >>> cassandra-db-1 >>> cassandra-db-2 >>> cassandra-db-3 >>> >>> Also, from this post >>> <http://www.datastax.com/support-forums/topic/agents-running-without-error-but-not-connecting-to-opscenter> >>> I >>> found a suggestion to curl <cluster>/nodes/all and when I do that I (think >>> I) get results showing 3 nodes. >>> >>> Any suggestions? Thanks! >>> - Ian >>> >>> >>> curl http://localhost:8888/FullStory/nodes/all >>> >>> >>> [{"load": 0.0, "has_jna": false, "vnodes": true, "devices": >>> {"saved_caches": "sdb", "commitlog": "sdb", "other": ["sda"], "data": >>> ["sdb"]}, "task_progress": {}, "node_ip": "10.240.167.187", >>> "network_interfaces": ["eth0", "lo"], "ec2": {"instance-type": null, >>> "placement": null, "ami-id": null, "instance-id": null}, "node_version": >>> {"search": null, "jobtracker": null, "tasktracker": null, "spark": >>> {"master": null, "version": null, "worker": null}, "dse": null, >>> "cassandra": "2.0.9"}, "dc": "us-central1", "node_name": >>> "cassandra-db-3.c.fs-staging.internal", "num_procs": 1, "streaming": {}, >>> "token": "-3220529141950148793", "data_held": 54064133.0, "mode": "normal", >>> "rpc_ip": "10.240.167.187", "partitions": {"saved_caches": "/dev/sdb", >>> "commitlog": "/dev/sdb", "other": >>> ["/dev/disk/by_uuid/121fd70f_e625_4394_89ce_5e5eff3d25e0", "rootfs"], >>> "data": ["/dev/sdb"]}, "os": "linux", "rack": "f", "last_seen": 0}, >>> {"load": 0.0, "has_jna": false, "vnodes": true, "devices": {"saved_caches": >>> "sdb", "commitlog": "sdb", "other": ["sda"], "data": ["sdb"]}, >>> "task_progress": {}, "node_ip": "10.240.111.79", "network_interfaces": >>> ["eth0", "lo"], "ec2": {"instance-type": null, "placement": null, "ami-id": >>> null, "instance-id": null}, "node_version": {"search": null, "jobtracker": >>> null, "tasktracker": null, "spark": {"master": null, "version": null, >>> "worker": null}, "dse": null, "cassandra": "2.0.9"}, "dc": "us-central1", >>> "node_name": "cassandra-db-1.c.fs-staging.internal", "num_procs": 1, >>> "streaming": {}, "token": "6048217978730786970", "data_held": 54319361.0, >>> "mode": "normal", "rpc_ip": "10.240.111.79", "partitions": {"saved_caches": >>> "/dev/sdb", "commitlog": "/dev/sdb", "other": >>> ["/dev/disk/by_uuid/2795e34f_4e9b_46a9_9e39_e6cc0f1f1478", "rootfs"], >>> "data": ["/dev/sdb"]}, "os": "linux", "rack": "a", "last_seen": 0}, >>> {"load": 0.04, "has_jna": false, "vnodes": true, "devices": >>> {"saved_caches": "sdb", "commitlog": "sdb", "other": ["sda"], "data": >>> ["sdb"]}, "task_progress": {}, "node_ip": "10.240.129.185", >>> "network_interfaces": ["eth0", "lo"], "ec2": {"instance-type": null, >>> "placement": null, "ami-id": null, "instance-id": null}, "node_version": >>> {"search": null, "jobtracker": null, "tasktracker": null, "spark": >>> {"master": null, "version": null, "worker": null}, "dse": null, >>> "cassandra": "2.0.9"}, "dc": "us-central1", "node_name": >>> "cassandra-db-2.c.fs-staging.internal", "num_procs": 1, "streaming": {}, >>> "token": "4393271482730462700", "data_held": 51388793.0, "mode": "normal", >>> "rpc_ip": "10.240.129.185", "partitions": {"saved_caches": "/dev/sdb", >>> "commitlog": "/dev/sdb", "other": >>> ["/dev/disk/by_uuid/2795e34f_4e9b_46a9_9e39_e6cc0f1f1478", "rootfs"], >>> "data": ["/dev/sdb"]}, "os": "linux", "rack": "b", "last_seen": 0}] >>> >> >> >> >> -- >> Nikolai Grigoriev >> (514) 772-5178 >> > >
