docker-graylog

see: http://docs.graylog.org/en/3.2/pages/configuration/elasticsearch.html

Default username: admin
Default password: admin

Get default Graylog config

wget https://raw.githubusercontent.com/Graylog2/graylog-docker/3.2/config/graylog.conf
wget https://raw.githubusercontent.com/Graylog2/graylog-docker/3.2/config/log4j2.xml

Create mongo database and user docker exec -it standalone.mongodb.graylog /bin/bash

show databases;
use graylog;
db.createUser(
{
user: "admin",
pwd: "admin_pass",
roles: [ { role: "root", db: "admin" } ]
}
)
exit

kafka.common.KafkaException: Failed to acquire lock on file .lock in /usr/share/graylog/data/journal. A Kafka instance in another process or thread is using this directory.

rm -f /var/opt/graylog/data/journal/.lock
rm -f /var/opt/graylog/data/journal/.kafka_cleanshutdown

If not works, you need to delete every thing within /var/opt/graylog/data/journal directory.