connection refused while connecting to Cassandra

1
votes

I am trying to run cassandra but everytime it is giving same error while connecting ... is there anything i need to edit in config file or property file

('Unable to connect to any servers', {'127.0.0.1:9042': error(61, "Tried connecting to [('127.0.0.1', 9042)]. Last error: Connection refused")})

There is error while starting cassandra

# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x0000000106116a8c, pid=27359, tid=0x0000000000006e03
#
# JRE version: OpenJDK Runtime Environment (8.0_275) (build 1.8.0_275-bre_2020_11_16_16_16-b00)
# Java VM: OpenJDK 64-Bit Server VM (25.275-b00 mixed mode bsd-amd64 compressed oops)
# Problematic frame:
# V  [libjvm.dylib+0x564a8c]
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /Users/sandhyasingh/hs_err_pid27359.log
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
#
Abort trap: 6
2
cassandra
I have never seen an error like that (with Cassandra) before. Is that in the system.log? It sort of suggests that your heap sizings are either way too big or too small. - Aaron
check logs in system.log file. - ROHIT KHURANA

2 Answers

1
votes

It means that you're trying to connect to localhost but either:

  • Cassandra isn't running, or
  • you've set rpc_address to something other than localhost

Run this command to see which IP address CQL port 9042 is bound to:

$ sudo lsof -nPi -sTCP:LISTEN

You need to connect to the IP that the server is listening for clients. Cheers!

1
votes

Came here with a completely different application but an exact match on build 1.8.0_275-bre_2020_11_16_16_16-b00. After changing Java versions (went to 1.8.0_292) the "fatal error" went away.