When I run cassandra i get the output like this:
D:\STUDIA\cassandra\apache-cassandra-3.11.9\bin>cassandra
Detected powershell execution permissions. Running with enhanced startup scripts.
*---------------------------------------------------------------------*
*---------------------------------------------------------------------*
WARNING! Automatic page file configuration detected.
It is recommended that you disable swap when running Cassandra
for performance and stability reasons.
*---------------------------------------------------------------------*
*---------------------------------------------------------------------*
Failed 64-bit check. Re-running to get version from 32-bit
*---------------------------------------------------------------------*
*---------------------------------------------------------------------*
WARNING! Detected a power profile other than High Performance.
Performance of this node will suffer.
Modify conf\cassandra.env.ps1 to suppress this warning.
*---------------------------------------------------------------------*
*---------------------------------------------------------------------*
Cassandra 3.0 and later require Java 8u40 or later.
and when i type cqlsh:
D:\STUDIA\cassandra\apache-cassandra-3.11.9\bin>cqlsh
Connection error: ('Unable to connect to any servers', {'127.0.0.1': error(10061, "Tried connecting to [('127.0.0.1', 9042)]. Last error: Nie mo\xbfna nawi\xb9za\xe6 po\xb3\xb9czenia, poniewa\xbf komputer docelowy aktywnie go odmawia")})
it says that
"Can not
make connections because the target computer is actively refusing it"
The error indicates that Cassandra is not running. You will need to check the Cassandra system.log to get an idea of the cause.
It may have failed to start or shutdown. It isn't possible to know why without looking at the logs. Cheers!
Related
Cassandra nodetool throws an error after updating OpenJDK
nodetool status
nodetool: Failed to connect to '127.0.0.1:7199' - URISyntaxException: 'Malformed IPv6 address at index 7: rmi://[127.0.0.1]:7199'.
This also affects the current official Docker-Hub Image https://hub.docker.com/_/cassandra version 3.11.12
How can I fix this error?
There seems to be an issue with "improved" IPv6 address parsing in the latest jdk update.
The workaround would be to use the IPv6 notation of localhost
nodetool -h ::FFFF:127.0.0.1 status
You can upgrade to Apache Cassandra 3.11.13 or use this command:
nodetool -Dcom.sun.jndi.rmiURLParsing=legacy status
Another way is to add this -Dcom.sun.jndi.rmiURLParsing=legacy to JAVA_TOOL_OPTIONS environment variable.
Hi Im new on cassandra and I running ubuntu OS. How do I set up cassandra in ubuntu 20?. Why Im I getting so many errors? This is the last one I come across, I have tried everything
cassandra
.....
ERROR org.apache.cassandra.db.Directories - Doesn't have write permissions for /var/lib/cassandra/data directory
before that one I got this one
cqlsh
Connection error: ('Unable to connect to any servers', {'127.0.0.1': error(111, "Tried connecting to [('127.0.0.1', 9042)]. Last error: Connection refused")})
The error indicates that the default cassandra user does not have permissions on the data directory.
Ordinarily for package installations, it will automatically create the directories for you with the correct permissions but if you manually created directories before running the installation, there's a possibility that you created them as root so Cassandra can't access them.
If so, you will need to reset the permissions to the cassandra user for all the directories and subdirectories in /var/lib/cassandra.
For details, see the Installation instructions I wrote in the official Apache Cassandra website. Cheers!
I have 2 node Cassandra cluster with datastax-agent up and running(one seed node) also nodetool status showing healthy.
In the 3 node I have opscenter install and the UI is loading fine with a blank screen, when I saw the var log it's complaining 'NO cassandra connection available for hostlist with a invalid unsupported version'(paster the log details message below). Any help is highly appreciated
2017-02-25 06:33:06+0000 [CLUSTER_NAME] ERROR: Control connection failed to connect, shutting down Cluster: ('Unable to connect to any servers', {'SEED-IP': })
2017-02-25 06:33:06+0000 [CLUSTER_NAME] WARN: No cassandra connection available for hostlist ['SEED-IP'] . Retrying.
I was using an old version of opscenter which was not matching the version of dse. Here is the map for your refference.
Reference: datastax doc
hi everybody im using OpsCenter 5.2.0 and agent connected to opscenter
bout no Disks in Dashboard I have error on datastax-agent log
ERROR [os-metrics-7] 2015-08-23 21:00:37,095 Short os-stats collector failed: Process failed: df --print-type --no-sync --block-size=1G --local
I am unable to connect to to the cassandra. By this I mean that when I try cassandra-CLI, or pycassaShell I get the following error:
Exception connecting to localhost/9160. Reason: Connection refused.
I have tried using a few non-defaul ports but to no joy.
I am running cassandra version 1.0.7
I have tried bounding the service, using restart, stop, start, and force-restart.
Run jps command under root user and kill CassandraDaemon if you will see it. After this you will start Cassandra again.
My problem was cassandra was not even starting. Solution was to start Cassandra!
I had the same issue in cassandra, After rename var/lib/cassandra/data to var/lib/cassandra/data1 then cassandra is working fine, If cassandra alloted maximum memory is full then it will throw connection refuse exception