I am trying to start cqlsh and this is what I get:
/bin$ ./cqlsh
Connection error: ('Unable to connect to any servers', {'127.0.0.1':
OperationTimedOut('errors=None, last_host=None',)})
I tried removing ~/.cassandra, did not work. I also compared cassandra.yaml with a version that worked.
Any ideas?
posting on this old thread as a memo for others, as i couln't managed to find any info to resolve these symptoms without debugging up to now:
got the same issue with a slow testing cluster, and i resolved it by setting a missing control_connection_timeout kwargs in Cluster() init, in cqlsh.py file.
issue opened and patch proposal provided at https://issues.apache.org/jira/browse/CASSANDRA-10959
Depending on your version and configuration, check the values specified for listen_address and/or rpc_address in your cassandra.yaml. If they are defined to anything other than localhost, you will need to provide that address when connecting with cqlsh.
$ grep listen_address: /etc/cassandra/cassandra.yaml
listen_address: 210.156.89.15
$ cqlsh 210.156.89.15 -u aploetz -p aploetz
Connected to PermanentWaves at 210.156.89.15.
[cqlsh 5.0.1 | Cassandra 2.1.4 | CQL spec 3.2.0 | Native protocol v3]
Use HELP for help.
aploetz#cqlsh>
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.
For my 6 node cluster, I am unable to cqlsh <ip> to the cluster. It gives me :
Connection error: ('Unable to connect to any servers', {'192.168.19.2': ProtocolError("cql_version '3.3.1' is not supported by remote (w/ native protocol). Supported versions: [u'3.4.4']",)})
But, I checked nodetool status, all my nodes are up and running. Also, I am able to contact the cluster via client.
For the cassandra.yaml on each node, I set the following parameters:
listen_address: node's ip
broadcast_address: node's ip
rpc_address: node's ip
broadcast_address: left blank
seed node: same two ips in each nodes
What seems to be the issue?
Update:
I am able to cqlsh from other nodes but not from the first nodes. I can observe that while working on the first node, I somehow messed up with its cqlsh version. Is it possible to change it?
Connection error: ('Unable to connect to any servers',
{'192.168.19.2': ProtocolError("cql_version '3.3.1' is not supported
by remote (w/ native protocol). Supported versions: [u'3.4.4']",)})
You do have different versions of cassandra installed or using the wrong driver. You want to upgrade to your drivers for connecting to your cluster as 3.4 seems to be a 3.10.x cluster while your driver only supports 3.0.x.
I am new to cassandra.
These are the resources with theirs' respected versions that i have used to set up cassandra.
java : jdk1.8.0.111
cassandra : 3.10
ubuntu : 15.10
I have intsalled cassandra and made changes in the cassandra.yaml file. when i run cqlsh from editor then it shows following error:
Connection error: ('Unable to connect to any servers', {'127.0.0.1': AuthenticationFailed('Remote end requires authentication.',)})
I tried my best to look at the issue but couldn't resolve it.
can someone please help me in this.
It seems you have enabled Authentication in your cassandra.yaml file. Login in cqlsh with default username and password 'cassandra'.
cqlsh <listen address> <cql port> -u cassandra -p cassandra
try below code
from cassandra.cluster import Cluster
from cassandra.auth import PlainTextAuthProvider
auth_provider = PlainTextAuthProvider(username ='<<username>>', password='<<password>>')
cluster=Cluster(['<<some ip or url >>'], auth_provider=auth_provider)
Hi anyone instruct me which version of cassandra should I use to run cqlsh-3.4.3, So that i will be able to run GROUP BY queries.
Currently My environment is
[cqlsh 5.0.1 | Cassandra 3.9 | CQL spec 3.4.2 | Native protocol v4]
Error on trying bin/cqlsh --cqlversion=3.4.3
Connection error: ('Unable to connect to any servers', {'127.0.0.1': ProtocolError("cql_version '3.4.3' is not supported by remote (w/ native protocol). Supported versions: [u'3.4.2']",)})
Please Suggest.Thanks.
Same Error while tried with cassandra 3.7 Also.
You can try to force cqlsh to use a specific cql version using the option
--cqlversion="#.#.#"
example: cqlsh 127.0.0.1 9042 --cqlversion="3.2.0" (in your case: 3.4.2)
example of mine:
me#XXX:~$ cqlsh <cassandra_ip>
Connection error: ('Unable to connect to any servers', {<cassandra_ip>: ProtocolError("cql_version '3.4.2' is not supported by remote (w/ native protocol). Supported versions: [u'3.3.1']",)})
me#XXX:~$ cqlsh <cassandra_ip> --cqlversion="3.3.1"
Connected to UAT Analytics Cluster at <cassandra_ip>:9042.
[cqlsh 5.0.1 | Cassandra 2.2.8 | CQL spec 3.3.1 | Native protocol v4]
Use HELP for help.
cqlsh>
UPDATE
(1) group by will be supported in CQL 3.4.3 and Cassandra 3.10.
(2) It is not recommended to upgrade CQL spec for Cassandra of specific version. OR it is impossible to upgrade CQL spec version for one Cassandra version (here).
(3) In order to use group by, you should upgrade cassandra to 3.10, OR user defined functions, OR change your table design...
nodetool -h <ipaddress> -p 7199 status
Error connecting to remote Jmx agent!
java.rmi.NoSuchObectException: no such object in the table
Am getting the above error when I tried to run the nodetool status or any other nodetool command. Cassandra is running fine and nodetool status on other nodes in the cluster shows it is UN state. I tried to add the below entry in cassandra-env.sh file but still I got the same error
JVM_OPTS = "$JVM_OPTS -Djava.rmi.server.hostname="
You have to use your listen_address for nodetool host ip.
nodetool -h <listen_address> -p 7199 status
or if it is not working, try with sudo.
In cassandra.yaml file it is written that jmx by default will only work from localhost. To run it from a remote host you need to uncomment and provide values of the parameters written in that file.
also try
cat /var/lob/cassandra/cassandra.log | grep Error
see if it gives you any error regarding JMX connectivity