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Questions tagged [opscenter]

OpsCenter is a management tool for Apache Cassandra and DataStax Enterprise provided by DataStax.

Documentation for DataStax Opscenter can be found on the Datastax website.

325 questions
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IAM Policy for OpsCenter backup to S3 user

Using OpsCenter 5.1.0 and trying to add S3 as a location for snapshot backups. What are the necessary permissions in AWS IAM for the opscenter user? So far, I have the following policy: "Statement": [ { "Effect": "Allow", …
LHWizard
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opscenter backup fails while trying to snapshot and non-existing SStable

I'm running a DSE cluster in AWS: m2.4xlarge instances running Datastax Enterprise 4.6.1, with Cassandra 2.0.12.200 and Opscenter 5.1.0. When we try to do a backup of a keyspace, we get this: Snapshot of keyspaces [XXXXXXX] on node XXX.XXX.XXX.XXX…
sebamontini
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High load on Cassandra nodes

For some reason I experience high load on my Cassandra nodes. Here are some information to get the picture. When I create a brand new Cluster the load is constantly low for a couple of days and increases by time, after a week or something it just…
parek
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1 answer

When Cassandra authentication enabled, opscenter can not connect to the cluster

Using Datastax Community Edition. When Password authentication is enabled, opscenter can not connect with cassandra. I can access cassandra through cqlsh shortcut where I provided username and password modifying shortcut's target field. Opscenter…
Avijoy Chakma
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1 answer

opscenter 5.0.1 agent connection fail

opscenter agent can't connet to opscenter. opscenter's agent.log show error like this. ( replace IP to XX) INFO [pdp-loader] 2014-11-28 12:03:53,517 Attempting to load stored metric values. ERROR [StompConnection receiver] 2014-11-28 12:03:54,814…
Zin UX
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What does adding nodes in Cassandra generally means?

Hi I have a cassandra DB with a huge amount of data and I am using only one node to store it.So someone suggested me to use multiple nodes . So what will happen if I add a new node , will the data get replicated to the other node or it will…
JavaRookie
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Error installing datastax cassandra 2.0

I am unable to install datastax cassandra 2.0 on Ubuntu. I can install 2.1 without any problem but I need to run 2.0.9. I am following these steps, is there any thing that I can do to install 2.0? echo "deb http://debian.datastax.com/community…
vrtx54234
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cassandra multi datacenter data sync lag

I have configured a Cassandra cluster spanning two data centers (AWS, us-east and us-west). The writes happen only to the us-east ring, and I can see the data synchronizing to the other ring. However, the lag is high. On DC1 cqlsh:ks> select…
vrtx54234
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DSE OpsCenter best practice fails when Cassandra PasswordAuthenticator is used

The following best practice checks fail when Cassandra's PasswordAuthenticator is enabled: Search nodes enabled with bad autocommit Search nodes enabled with query result cache Search nodes with bad filter cache My values are in compliance with…
PJ.
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Java is not installed unix issue

I am on Linux Centos 6. I've installed Java JRE and JDK on my machine. [root@mhsapp002 conf]# java -version java version "1.7.0_60" Java(TM) SE Runtime Environment (build 1.7.0_60-b19) Java HotSpot(TM) 64-Bit Server VM (build 24.60-b09, mixed…
Wild Goat
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2 answers

DataStax Enterprise version 4.0.2 , Cassandra 2.0.6 and Opscenter 4.1.2. show "Error creating cluster: Timeout while adding cluster. "

I have setup cluster with 5 node on Amazon EC2 with multi region center. And ops center node/instance is separate from cluster nodes. When I try to add a existing cluster by the opscenter web, it show "Error creating cluster: Timeout while adding…
user3632180
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Can connect to Cassandra cluster using OpsCenter but not DevCenter or via Java

Cassandra noob here. I've done the online training which didn't need more than a localhost connection. Now I've pulled out some old computers and set them up as a cluster, however I can't connect to them via DevCenter or using the Java Driver. I…
Lance Albertson
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Having trouble getting DataStax OpsCenter 4.0.3 to connect to Cassandra 2.0.4 cluster

I have a 1-node C* 2.0.4 cluster running and nodetool status shows a healthy cluster. I then installed OpsCenter 4.0.3 on a separate machine on the same network using 'sudo yum install opscenter-free'. In the opscenterd.conf file, I set the…
Blueplastic
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How to generate tokens for my two node Cassandra cluster?

I am trying to setup two node Cassandra Cluster on windows machine. I have basically two windows machine and I was following this datastax tutorial Whenever I use the below command to get the token number from the above tutorial - python -c "num=2;…
arsenal
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3 answers

Cannot add existing Cassandra 2.0.0 cluster to OpsCenter

I have recently upgraded a small development cluster to Cassandra 2.0.0 from 1.2.9. I used DataStax OpsCenter free edition and it worked OK before. After the upgrade it refused to see the cluster - it was showing the cluster name with 0 nodes alive.…
Nikolai Grigoriev
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