DataStax OpsCenter makes it possible to manage Apache Cassandra and DataStax Enterprise clusters from a centralized web-based dashboard.

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DataStax OpsCenter agent fails to start when Cassandra requires authentication

Problem I can not get OpsCenter get to connect to datastax-agent. It seems that datastax-agent starts and tries to connect to cassandra, fails because it does not know the correct credentials, but it ...
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1answer
356 views

Problems gettings datastax-agent (DSE 4.0.2) working with opscenter (4.1.2), IllegalArgumentException

I guess the question is: why isn't this working? I'm a bit stuck because there isn't much in the way of documentation on the agent itself, and the exception (seemingly from Clojure) isn't particularly ...
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1answer
83 views

OpsCenter 5.2 cannot connect to multi-dc cluster

We have two data centers (192.X.X.X and 10.X.X.X) between which gossip (port 7001) is possible but not thrift or the native protocol. OpsCenter runs on a node in the first data center (192.X.X.X). ...
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1answer
125 views

Change hostname in datastax-agent

I've noticed when working in Opscenter that all the nodes are displayed with the result of hostname and their IP address. For an ec2 host this is a little redundant since the hostnames look like ...
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1answer
670 views

Datastax community edition in windows - Error in creating the test cluster

I recently installed Datastax community edition for windows. As per the installation manual, after successful installation, the Ops Center is supposed to open and show the status of the Test Cluster. ...
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1answer
140 views

DataStax OpsCenter 5.0.0 API doesn't increase last_seen when nodes down if DataStax OpsCenter Agent is down, used to work with 3.2.2

I've been using the DataStax OpsCenter (Enterprise) 5.0.0 REST API with DSE 4.5.1 (Cassandra 2.0.9) to query the /$cluster_name/nodes endpoint and see the last_seen field for the number of seconds ...
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1answer
404 views

Opscenter is unable to install agents due permission denied to /tmp

O am not able to install agents on 10.0.0.29 IP through opscenter. It says below error. The user is pavan and this user is having sudo access. Opscenter is unable to install the agents and I'm not ...
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1answer
110 views

datatstax opscenter v 4.1.2 short-os collection failed

I've installed Datastax opscenter v4.1.2. It was bundled with Datastax Cassandra Community edition version 2.0.8. I'm running these on Windows Server 2008 R2 64-bit. When I open opscenter all ...
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1answer
155 views

DataStax OpsCenter ignoring proxy environment variable

we installed DataStax OpsCenter (v4.1.1) on a Debian 7.4 server. After starting the service, the following error is logged in /var/log/opscenter/opscenterd.log: ERROR: Trying to download ...
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342 views

OpsCenter 5.1 add existing cluster

I have recently removed the old opscenter and installed new opscenter Opscenter 5.1. When I am trying to add existing cluster to opscenter I keep getting error "Error creating cluster: Timeout while ...
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1answer
241 views

Can't get datastax-agent to run on a new node

I'm trying to install the datastax-agent on a new CentOS node (there are 3 other nodes currently up and running correctly). After installing the datastax-agent via the Opscenter UI it appears to ...
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1answer
384 views

OpsCenter shows a datacenter as unknown even though the agents are connected

We added a datacenter to our cluster and it is shown as "Unknown DataCenter". The dashboard reports all the agents as connected, and neither the agents logs nor opscenter logs show any error. The ...
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1answer
100 views

opscenter build cluster failing on EC2

I'm trying to build a new Cassandra cluster on Amazon EC2 using Opscenter for development use. I have installed Opscenter (v4.1.3) on an EC2 instance using the instructions on ...
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1answer
25 views

Cassandra Opscenter historical view

I recently upgraded the underlying machines of my Cassandra cluster (In AWS, from "old" to "current" generation hardware). I thought I'd be able to see if this had a performance impact in Opscenter. ...
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52 views

Cassandra versions supported in OpsCenter 5.1.0

We are planning to use Cassandra 2.0.11 but the latest OpsCenter 5.1.0 doesn't support creating a new cluster with Cassandra 2.0.11 package. It shows only 2.0.9. How do we proceed?
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1answer
371 views

DataStax OpsCenter - can't connect with agents

I've installed DataStax OpsCenter (Apache Cassandra) and in OpsCenter, there is an error: "0 of 1 agents connected". When I click "fix", enter credentials and try to install nodes, i get error: ...
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26 views

Adding cluster to Opscenter fails intermittently due to Enterprise functionality: False

I am working with a OpsCenter 5.1.1 installation, while trying to add an existing DSE 4.6.5 cluster containing 5 nodes via the API. The options passed set the storage_cassandra variables for storing ...
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208 views

OpsCenter - DSE Cassandra - Cannot achieve consistency level LOCAL_ONE

I am running into this error on a OpsCenter node with DSE Cassandra installed locally. It is in it's own DC and part of a cluster with three other nodes in another DC. Authentication is enabled on ...
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17 views

Trouble configuring Opscenter (5.1.1) Email alerts

I was wondering if anyone could assist me in figuring out why my opscenter email alerts aren't working. My environment is docker running in native network mode with opscenter in a container. ...
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0answers
260 views

Repairing OpsCenter rollups60 Results in Snapshot Errors

I am running a 6 node cluster using Apache Cassandra 2.1.2 with DataStax OpsCenter 5.0.2 from the AWS EC2 AMI "DataStax Auto-Clustering AMI 2.5.1-hvm" (DataStax Community AMI). When I try to run a ...
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23 views

OpsCenter 5.2 still views a keyspace after DROP via cqlsh

After dropping a keyspace via cqlsh we can still see it on OpsCenter. The following error was seen in the log: Error deleting keyspace: ErrorMessage code=2300 [Query invalid because of ...
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46 views

OpsCenter 5.2.0 - Event log view error: “Undefined name target_node in selection clause”

I've got an upgraded instance from OpsCenter 5.1 to 5.2. When I try to look at the event log, I receive this error in the UI: Error loading events: code=2200 [Invalid query] message="Undefined name ...
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59 views

Cassandra - DataStax OpsCenter: Error provisioning cluster

I installed Cassandra on my local mac, together with opscenter from DataStax. When I create the new cluster, it gives me the error: Error provisioning cluster: Unable to login to some nodes. ...
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138 views

Datastax Installation Opscenter errors

I am installing a 5 node cluster of Datastax Enterprise 4.7 on 5 separate AWS instances. I have gone through the installation process (simple install) and it appeared to succeed. However, upon ...
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79 views

datastax-agent unable to connect after reinstalling OpsCenter (PKIX path validation failed)

I get this error in /var/log/datastax-agent/agent.log on every client after building a new OpsCenter server and pointing my clients at it: ERROR [StompConnection receiver] 2015-03-30 15:57:25,397 ...
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31 views

opscenter agent -f works

I feel certain this is something fairly basic that I'm missing, I'm new to Cassandra and very new to Opscenter and the agent. In brief, Opscenter is working fine and the agent install seems to have ...
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0answers
100 views

OpsCenter : Error loading column family: Make sure all agents are running and connected properly

I'm using OpsCenter version: 5.0.2 and Cassandra 2.1.2 on localhost. I can access keyspaces and see columns list, but when trying to display content of any column I'm getting message: Error ...
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138 views

DataStax OpsCenter Agent Service doesn't report on CentOS, binary works fine

I have OpsCenter 5.0.2 running on a node, and Cassandra 2.1.2 and the Agent 5.0.2 running on another node. I installed both OpsCenter and the Agent using yum/rpm on CentOS 7. I have no problem using ...
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721 views

Opscenter is connected to datastax agents but no data available

We installed opscenter and datastax agents on a cluster with private network through datastax community packages. Configurations seems to be ok and we don't have connectivity issues on jmx or stomp. ...
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92 views

Opscenter 5 setup error on adding existing cluster

I've got an existing Cassandra cluster (Datastax Community v2.1, Linux). I've downloaded 2.0.10 on a separate box (Win) just to use Opscenter (v5). I add ('manage') the existing cluster by simply ...
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33 views

OpsCenter API return all null values for os-cpu-* metrics

Invoking the metrics API (e.g., /cluster/metrics/node/os-cpu-idle?start=1397746020&function=average), I get all null values: { "192.168.4.101": { "AVERAGE": [ [ 1397746020, ...
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117 views

NullPointerException during datastax agent startup

I installed DSE 4.0 and started the datastax agent and set up a 12-node cluster. When I look in the opscenter console I see 0 nodes connected. I see this exception in the agent log: INFO ...
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0answers
390 views

OpsCenter doesn't display disk space

I've looked through multiple forum posts, I've turned on debug et al, and I still cannot for the life of me figure out why the disk space isn't working. ALL other information is filled--except for ...