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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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4 answers

What are the differences between a node, a cluster and a datacenter in a cassandra nosql database?

I am trying to duplicate data in a cassandra nosql database for a school project using datastax ops center. From what I have read, there is three keywords: cluster, node, and datacenter, and from what I have understand, the data in a node can be…
enjazweb
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Alternatives to Cassandras Opscenter for people using the open source distribution

As DataStax will discontinue the OpsCenter (http://docs.datastax.com/en/opscenter/5.2/opsc/opscPolicyChanges.html), which was rather okay for monitoring purposes and the daily management tasks, I'm searching for a valid alternative. The list of…
Tobias
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Many commitlog files with Cassandra

I've got a mostly idle (till now) 4 node cassandra cluster that's hooked up with opscenter. There's a table that's had very little writes in the last week or so (test cluster). It's running 2.1.0. Happened to ssh in, and out of curiosity, ran du -sh…
ashic
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How to know Native Clients connected to Cassandra

I am able to see 160 Native clients on a particular node from OpsCenter. But none of the application is pointing to this DC or any of the nodes from this DC. If above is the situtation what are those 160 Native clients? Few of them are because I…
Anil Kapoor
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2 answers

datastax opscenter agents not installing

I'm running my own version of cassandra on 127.0.1.1. I changed the rpc_address and also the address to 127.0.1.1. When I'm starting Opscenter I'm prompted to install agents and I'm doing so by the recommended Fix now option. But when I try to…
HackCode
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What are native transport requests in Cassandra?

When looking at node details in Datastax OpsCenter: We can see that there were 34903422 "native-transport-requests", but 1072 were blocked. Could someone explain what is native transport request? What is that in relation to mutation? Is it normal…
piotrwest
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Unable to add node via OpsCenter

When trying to add a node via OpsCenter 5.0.1 I get the following The Ec2Snitch is being used by this cluster. Provisioning nodes using this endpoint_snitch is not supported at this time. Which seems contrary to the instructions given here.
James Tyrrell
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Datastax Enterprise - Amazon M3.Xlarge Machines

Does anyone know how to use Datastax enterprise (using opscenter) in a cluster using amazon ec2 M3.Xlarge machines? When I have tried to use these type of instances (that use ssd) I got the following error: Launching instances failed.Invalid node…
Bruno César
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1 answer

Cassandra opscenter "agents failed to connect" on removed nodes

I have some EC2 instances where cassandra provisioning failed. I terminated the instances and the machines no longer exist. Opscenter keeps nagging me about "agents failed to connect" on these machines. The machines do not show up in nodepool status…
Vincent de Lagabbe
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Datastax Opscenter - Agent not connecting

I setup Cassandra, OpsCenter and the needed DataStax agent on my EC2 Amazon machine. At the moment it's only one machine. Everything seems to be running fine, except the node list is empty and so are the keyspaces in the Opscenter. The cassandra,…
Gerard
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4 answers

Cassandra compaction tasks stuck

I'm running Datastax Enterprise in a cluster consisting of 3 nodes. They are all running under the same hardware: 2 Core Intel Xeon 2.2 Ghz, 7 GB RAM, 4 TB Raid-0 This should be enough for running a cluster with a light load, storing less than 1 GB…
parek
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Not able to add cluster in opscenter getting error unable to connect to cluster

I am trying to create a datastax cluster with datastax enterprise. I have changed Cassandra.yaml of the node and started Cassandra and opscenter on the node. I am able to connect to opscenter via webbroser. But when I am trying to do "Add Cluster"…
user1108687
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How to find list of active Queries used/Queried on Cassandra Database?

Is it possible to find list of all queries that application uses to query Cassandra Database? Do we have any option in Cassandra Database to pull all the queries queried, instead of gathering from the application? From Performance Service section of…
Arun
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cassandra on azure, how to configure security groups

i just installed the datastax cluster of cassandra. i have a question regarding the security groups and how to limit access. currently, there are no security groups to the vnet and to all vms. so everyone can connect to the cluster. the problem…
Avi Cohen
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OpsCenter rollups* tables are growing forever

We are using DSE 4.8.8 with OpsCenter 5.2.4. All our OpsCenter.rollups* tables are growing forever, especially the rollups60 one: Size of rollups60, 1 month The keyspace OpsCenter uses org.apache.cassandra.locator.NetworkTopologyStrategy, DC1 1, DC2…
Kilian
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