This guide describes the fastest way to install Graylog on Ubuntu 18.04 LTS. All links and packages are present at the time of writing but might need to be updated later on.
This setup should not be done on publicly exposed servers. This guide does not cover security settings!
Taking a minimal server setup as base will need this additional packages:
$ sudo apt-get update && sudo apt-get upgrade $ sudo apt-get install apt-transport-https openjdk-8-jre-headless uuid-runtime pwgen
The official MongoDB repository provides the most up-to-date version and is the recommended way of installing MongoDB:
$ sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 9DA31620334BD75D9DCB49F368818C72E52529D4 $ echo "deb [ arch=amd64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.0.list $ sudo apt-get update $ sudo apt-get install -y mongodb-org
The last step is to enable MongoDB during the operating system’s startup:
$ sudo systemctl daemon-reload $ sudo systemctl enable mongod.service $ sudo systemctl restart mongod.service
Graylog can be used with Elasticsearch 6.x, please follow the installation instructions from the Elasticsearch installation guide:
$ wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | sudo apt-key add - $ echo "deb https://artifacts.elastic.co/packages/oss-6.x/apt stable main" | sudo tee -a /etc/apt/sources.list.d/elastic-6.x.list $ sudo apt-get update && sudo apt-get install elasticsearch-oss
Make sure to modify the Elasticsearch configuration file (
/etc/elasticsearch/elasticsearch.yml) and set the cluster name to
graylog additionally you need to uncomment (remove the # as first character) the line, and add
action.auto_create_index: false to the configuration file:
cluster.name: graylog action.auto_create_index: false
After you have modified the configuration, you can start Elasticsearch:
$ sudo systemctl daemon-reload $ sudo systemctl enable elasticsearch.service $ sudo systemctl restart elasticsearch.service
Now install the Graylog repository configuration and Graylog itself with the following commands:
$ wget https://packages.graylog2.org/repo/packages/graylog-3.0-repository_latest.deb $ sudo dpkg -i graylog-3.0-repository_latest.deb $ sudo apt-get update && sudo apt-get install graylog-server
Follow the instructions in your
/etc/graylog/server/server.conf and add
root_password_sha2. These settings are mandatory and without them, Graylog will not start!
You need to use the following command to create your
echo -n "Enter Password: " && head -1 </dev/stdin | tr -d '\n' | sha256sum | cut -d" " -f1
To be able to connect to Graylog you should set
http_bind_address to the public host name or a public IP address of the machine you can connect to. More information about these settings can be found in Configuring the web interface.
If you’re operating a single-node setup and would like to use HTTPS for the Graylog web interface and the Graylog REST API, it’s possible to use NGINX or Apache as a reverse proxy.
The last step is to enable Graylog during the operating system’s startup:
$ sudo systemctl daemon-reload $ sudo systemctl enable graylog-server.service $ sudo systemctl start graylog-server.service
Multiple Server Setup¶
If you plan to have multiple server taking care of different roles in your cluster like we have in this big production setup you need to modify only a few settings. This is covered in our Multi-node Setup guide. The default file location guide will give you the file you need to modify in your setup.