326 questions
0
votes
1
answer
49
views
Error during DataStax Opscenter startup, ImportError
I have installed datastax opscenter 6.8 with reference to: Datastax Docs. However, the opscenter fails to start with the following error in startup.log file (/var/log/opscenter/).
06:42:34 [opscenterd]...
0
votes
2
answers
70
views
OpsCenter agent can't connect to node, returns "TransportException: [/127.0.0.1:9042] Cannot connect"
Can't connect to Cassandra (All host(s) tried for query failed (tried: /127.0.0.1:9042 (com.datastax.driver.core.exceptions.TransportException: [/127.0.0.1:9042] Cannot connect))), retrying soon.
on ...
- 1,085
0
votes
1
answer
55
views
What is the procedure for adding a node with OpsCenter on a DSE cluster with encrypted configuration?
https://docs.datastax.com/en/opscenter/6.8/opsc/LCM/opscLCMConfigKnownIssues.html#EncryptedDSEconfigurationvalues
I never understood this part of it.
I build a new DSE cluster in Opscenter. (Only node-...
- 5
0
votes
1
answer
78
views
What should I do in OpsCenter after deleting the cassandra superuser?
After building a DSE cluster with Opscenter, I cannot configure after deleting the cassandra user.
I see an error code that Opscenter is trying to log in to the DSE cluster with the cassandra user.
...
- 5
1
vote
2
answers
249
views
OpsCenter reports "Cannot run anti-entropy repair on tables with NodeSync enabled"
I'm monitoring a DSE cluster and I see the following problem:
As you can see it says that the Repair is currently failing, this value keeps going up with time. Can someone explain to me what's ...
- 199
0
votes
1
answer
91
views
Getting "not a properly formatted private key" when adding nodes using OpsCenter LCM
Environment
Opscenter6.8
RHEL8 on GCP
When building a new cluster in Opscenter's "Lifecycle Manager", after adding a node and starting the installation, I get
"The ssh-private-key value ...
- 5
0
votes
1
answer
180
views
Getting "1 node(s) didn't find available persistent volumes to bind" installing DSE OpsCenter on Kubernetes
I am trying to install DSE Opscenter on Kubernetes.
Below is my cluster file
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: ops-storage
provisioner: kubernetes.io/no-provisioner
...
0
votes
2
answers
139
views
Is it possible to run DataStax OpsCenter on Windows?
Context
I am just "installed" Cassandra 3.11.11 on a Windows 2019 Server ("installed" means unpacked the tar, set all environment, and run). Did some smoke tests all with success ...
- 35.6k
0
votes
1
answer
310
views
not able to connect cluster to opscenter
hyy folks,
i have setup cassandra gui using this doc https://docs.datastax.com/en/install/6.8/install/opscInstallRHEL.html
but as soon as i hit the url it will open this page
here i chosen manage ...
user15224751
0
votes
1
answer
734
views
Can't connect to cassandra, authentication error, please carefully check your auth settings, retrying soon
Stuck with the below error while configuring dse address.yaml.
INFO [async-dispatch-1] 2021-04-17 07:50:06,487 Starting DynamicEnvironmentComponent
;;;;;
;;;;;
INFO [async-dispatch-1] 2021-04-17 07:...
- 1
0
votes
1
answer
133
views
OpsCenter default native client connection and load distribution?
If we have 8 nodes in a OpsCenter cluster(Primary and Secondary) with 2 DCs. We have almost 30 nodes connected to this OpsCenter for monitoring through datastax agent. My question is all 30 nodes will ...
- 1,538
1
vote
2
answers
278
views
OpsCenter 6.7.7 won't manage an existant cassandra cluster (dse 6.7.7) running on: redhat 7.6 Maipo
I encountered an issue with my fresh new OpsCenter 6.7.7; when I click "manage an existing" cluster I received the following error message:
Meld execution failed: OS platform (Red Hat Enterprise ...
- 1,019
1
vote
2
answers
220
views
How and where to configure DSE Opscenter heap size and any other JVM parameters
I am getting OutOfMemory error on OpsCenter.log.
As per DSE documentation default heap size is 2048m (2GB), which should be enough for most installations but If I need to increase or decrease this ...
- 1,538
1
vote
1
answer
129
views
Is there any option in config of OpsCenter to automatically start repair service?
I made an OpsCenter and attach the cluster to it. I don't want to "click" manually to start repair service, instead, I want repair service to start by default (config?) Any help?
- 11
0
votes
0
answers
143
views
stucked compaction of Opscenter.rollup_state table
we just added new second DC to our cassandra cluster with 7 nodes (per 5 jbods SSD), and after replication of the new DC we got periodical stucked compactions of Opscenter.rollup_state table. When ...
- 1
1
vote
2
answers
130
views
DSE Cluster node disk gets filled
I have an 6 node cluster , each node is of 1000 GB in size. But the size of one node reached to 1000 GB randomly.On analysis i found only one key space gets filled & only 1 table of this keyspace ...
0
votes
0
answers
529
views
DataStax - OpsCenter LifeCycle Manager (Failed to Start LSB: DataStax Enterprise)
I am currently trying to create a cluster using LCM and one my nodes fails with the error Failed to Start LSB: DataStax. I have attempted to edit certain files to solve the issue but to no avail.
I ...
- 651
6
votes
2
answers
3k
views
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 ...
- 774
2
votes
1
answer
318
views
For system_auth default Class should be SimpleStrategy or NetworkTopologyStrategy
In our Prod cluster, I see some of the system* keyspaces with SimpleStrategy.
As we are adding new DCs in our cluster we need to be on NetworkTopologyStrategy otherwise while I am running nodetool ...
- 774
3
votes
1
answer
3k
views
Deleting Huge Data In Cassandra Cluster
I have Cassandra cluster with three nodes. We have data close to 7 TB from last 4 years. Now because of less space available in the server, we would like to keep data only for last 2 years. But we don'...
- 53
1
vote
1
answer
79
views
How to enable Opscenter Settings and rebalance tab?
I am a newbie to the Opscenter and Cassandra.
After configuring cluster and nodes I found out that there is more load on two nodes: I looked into action tab and found rebalance option but its grayed ...
- 11
1
vote
0
answers
51
views
OpsCenter Data backup and Restore issue
We are restoring data backup for Cassandra using OpsCenter. We are able to store most of the tables successfully but getting failed for few ones.
Few tables having types as UDT like ones. What ...
- 11
0
votes
2
answers
469
views
DataStax agent 6.5 not connecting to DSE cluster
I have installed a DSE 6.0 cassandra cluster using LCM| opscenter 6.5 and node is up is running . During LCM cluster install, it installed datastax agent as well .
But the agent is not connecting to ...
- 721
0
votes
1
answer
275
views
Opscenter LCM cluster dse not starting
I have configured a Cassandra cluster through Opscenter LCM . When opscenter LCM tries to start DSE at final stage, it fails with below error.
WARN [main] 2018-07-20 12:24:27,504 FileSystemUtil....
- 721
1
vote
0
answers
2k
views
Can't connect to Cassandra (All host(s) tried for query failed
I am trying to setup Datastax OpsCenter.
When I tried to run datastax-agent I get the following error:
Can't connect to Cassandra (All host(s) tried for query failed (tried:
/X.X.X.X1:9042 (com....
- 31
1
vote
1
answer
205
views
Get "Error starting DynamicEnvironmentComponent." in staring OpsCenter 6.5 agents.DSE 6.0.1
After using Adding an existing cluster to add DSE(6.0.1) cluster to OpsCenter, and select install agent automatically after all agents installed I have something like below picture in OpsCenter(...
- 382
1
vote
1
answer
61
views
Can't Connect to Cassandras default cluster (Test Cluster) Using Opscenter
My Error is as below
OpsCenter was not able to add the cluster: OpsCenter was unable to resolve the ip for Test_Cluster, please specify seed nodes using the rpc_address
My OS is CentOS 7
I install ...
- 21
2
votes
0
answers
581
views
OpsCenter 6.1.16 Datastax Agent Creating stomp connection to ERROR [async-dispatch-2] Error connecting via stomp
I am facing challenges making an HTTP connection to opscenter through the datastax-agent using SSL:
Datastax Version 5.1.7
Opscenter version 6.1.16
INFO [async-dispatch-2] 2018-05-23 20:58:24,549 ...
- 35
0
votes
1
answer
111
views
Opscenter installation help for Ubuntu 16.04
I have installed DSE 6(casssandra) on my Ubuntu 16.04 LTS.
Now i want to install the Opscenter. Tarball install is not working(may be I don't know the instructions for that).
So i tried this:
https://...
- 654
0
votes
1
answer
289
views
upgrading cassandra with DataStax Lifecycle manager
The DataStax Opscenter LifeCycle Manager only seems to have an option to run an 'install' job. Looking at the language, it seems to be only to provision new nodes.
Can LifeCycle Manager be used to ...
- 45.3k
1
vote
0
answers
273
views
Failure to restore from S3 backup using Datastax Opscenter
I have an existing Cassandra DSE cluster managed by Opscenter with a backup schedule of all keyspaces to a S3 bucket. I spinned up a fresh cluster (with a separate instance of Opscenter) to attempt a ...
- 11
1
vote
1
answer
309
views
DSE Cannot run program df - Too many open files
Our agent stoped working and the only way to get it back is by restarting the agent in every node, the error we get:
ERROR [clojure-agent-send-off-pool-11618] df failed on execute;
returning default ...
- 676
3
votes
0
answers
304
views
How to disable the rollups tables in OpsCenter keyspace?
We are using DSE 4.8.8 with OpsCenter 5.2.4. I don't want to collect 1min and 5min metrics. Here is my cluster config file settings.
[cassandra_metrics]
1min_ttl = -1
5min_ttl = -1
2hr_ttl = ...
- 31
1
vote
0
answers
32
views
Error installing DataStax OpsCenter while creating opscenter SSL files
I downloaded the setup from official site and executed ./setup.py but got following error
File "./setup.py", line 54
print "Error when creating opscenter SSL files. Error was:\n"
...
- 2,796
1
vote
0
answers
355
views
DATASTAX OPSCENTER 6.0 not able to connect to DSE 4.8 cluster
I am trying to connect opscenter to DSE cluster, I tried and verified the same configurations with in the other environments (DEV, STAGING) but while I am trying to do the same on Prod, I am getting ...
- 113
0
votes
1
answer
224
views
Meld error when setting up a new cluster
I am evaluating the DataStax OpsCenter on a virtual machine to start managing/monitoring cassandra. I am following the online docs to create cluster topology models via OpsCenter LCM, but the error ...
- 73
0
votes
1
answer
367
views
Unable to configure DSE from Opscenter
I am trying to configure DSE on newly configured centos 7 VM but I am getting error Attempting to configure dse-full 5.1.0, but found a different version installed. Upgrades and downgrades aren't ...
- 960
1
vote
1
answer
683
views
Cassandra JMX Bean to monitor the hints
Is there way to monitor the hints in cassandra cluster using the JMX Bean?
I am looking at : http://cassandra.apache.org/doc/latest/operating/metrics.html#hintsservice-metrics and I see the below ...
- 839
0
votes
1
answer
101
views
Datastax Opscenter Restore Fails with TLS enabled (node-to-node encryption)?
I am using DSE version 5.09 and Opscenter version 6.08.
Opscenter restore process seems to be failing when node-to-node encryption is enabled on C* nodes. It works successfully when I disable TLS on ...
- 541
1
vote
1
answer
547
views
OpsCenter 6.1.2 keeps crashing after update from 6.0.X "No agents available to query for getDsePerformanceStatusFromOneAgent"
After updating OpsCenter 6.0.X to 6.1.2 using yum, OpsCenter frequently crashes with the following error in opsenterd.log:
2017-08-25 10:03:34,066 [opscenterd] ERROR: Unhandled error in Deferred: No ...
- 41
1
vote
1
answer
557
views
Getting "Error initializing cluster data" in OpsCenter
I am getting following error in Opscenter, after some time the issue got resolved itself.
Error initializing cluster data: The request to
/APP_Live/keyspaces?ksfields=column_families%...
- 613
0
votes
1
answer
2k
views
Cassandra: how to reduce the number of tombstones in a table? (tombstone_compaction_interval, gc_grace_seconds and LevelledCompactionStrategy)
I've a table where I insert data with a TTL of 1 minute and I have a warning in DSE OpsCenter about the high number of tombstones in that table. Which does make sense since in average 80 records per ...
- 170
0
votes
1
answer
439
views
com.jcraft.jsch.ChannelSftp.throwStatusError error with DSE on AWS
Getting below error trying to install DSE via opscenter
Permission Denied
com.jcraft.jsch.ChannelSftp.throwStatusError(ChannelSftp.java:2846)
com.jcraft.jsch.ChannelSftp._put(ChannelSftp.java:594)
...
- 505
0
votes
0
answers
332
views
DataStax Lifecycle Manager Failing to Install New Cluster
We are using Lifecycle Manager to distribute DSE to a new Cass cluster. The install fails no matter what is tried. The log shows the following where I edited ip addresses.
Meld failed on name="...
- 33
0
votes
1
answer
150
views
datastax opscenter posturl.conf is not posting alerts to an AWS api gateway endpoint
I am trying to post Opscenter alerts to an AWS Api Gateway endpoint(which is of the form https://xxxxxxxx.execute-api.us-east-1.amazonaws.com/opscenteralerts/alerts). I was able to post to api gateway ...
- 57
1
vote
1
answer
374
views
Errors in opscenterd.log after starting repair service
After upgrading from Opscenter 5.x > 6.0.8 > 6.1.0 > 6.1.1, I see lots of errors and warnings in the opscenterd.log, like the following. I'm using DSE 4.8.10. I've turned on the Repair Service, which ...
- 2,351
0
votes
1
answer
70
views
Keyspace doesn't appear in Opscenter Repair Service UI
I recently updated to Datastax OpsCenter 6.1.0 and enabled the repair service against my cluster running DSE 5.0.5. The UI shows repair task status for tables in the OpsCenter keyspace, but none for ...
- 1,163
0
votes
1
answer
655
views
Cassandra time series roll-ups without Opscenter
I'm trying figure out what the best practice is for aggregating and rolling up Cassandra time series data.
I came across this this page which mentions Opscenter can be used for roll-ups, but I don't ...
- 1,179
0
votes
1
answer
153
views
Datastax OpsCenter Install Cluster Error: 400 Client Error when retrieving package_information
I'm attempting to use OpsCenter 6.1 to install a new cluster. OpsCenter successfully ssh's to each of the nodes in the cluster then appears to nearly immediately error out on each node with the ...
- 821
0
votes
0
answers
64
views
Cassandra eating hard drive space
I'm using Cassandra with OpsCenter (3 servers = 2 nodes, 1 server for OpsCenter) and for some reason every day going my hard drive space is taken more 1G and nothing change on the DB (no inserts / ...
- 676