I keep getting this error [2019-02-26T16:50:41,329][FATAL][logstash.runner ] Logstash could not be started because there is already another instance using the configured data directory. If you wish to run multiple instances, you must change the "path.data" setting.
when I launch logstash. I am using the cli to launch logstash. The command that I execute is:
screen -d -S logstash -m bash -c "cd;export JAVA_HOME=/nastools/jdk1.8.0_77/; export LS_JAVA_OPTS=-Djava.net.preferIPv4Stack=true; ~/monitoring/6.2.3/bin/logstash-6.2.3/bin/logstash -f ~/monitoring/6.2.3/config/logstash_forwarder/forwarder.conf"
I don't have any instance of logstash running. I tried running this:
ps xt | grep "logstash" and it didn't return any process. I tried the following as well: killall logstash but to no avail, it gives me the same error. I tried restarting my machine as well but still the same error.
Has anyone experienced something similar? Kibana and elastic search launch just fine.
Thanks in advance for your help!
The problem is solved now. I had to empty the contents of the data directory of logstash. I then restarted it and it generated the uuid and other files it needed.