- 25 May 2022
- 3 Minutes to read
- Updated on 25 May 2022
- 3 Minutes to read
This guide describes the fastest way to install Graylog on Ubuntu 18.04 and 20.04 LTS. All links and packages are present at the time of writing but might need to be updated later on.
Taking a minimal server setup as a base will need these additional packages:
sudo apt-get update && sudo apt-get upgrade sudo apt-get install apt-transport-https openjdk-<version_number>-jre-headless uuid-runtime pwgen
If you get an error stating Unable to locate the package, you likely need to enable the universe repository, which can be done by typing the below command and subsequent commands as follows:
sudo add-apt-repository universe sudo apt-get update && sudo apt-get upgrade sudo apt-get install apt-transport-https openjdk-<version_number>-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
For example, in corporate proxies and other non-free environments, you can use a keyserver approach via a widget.
wget -qO- 'http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x9DA31620334BD75D9DCB49F368818C72E52529D4' | sudo apt-key add -
The last step is to enable MongoDB during the operating system’s startup and verify it is running.
sudo systemctl daemon-reload sudo systemctl enable mongod.service sudo systemctl restart mongod.service sudo systemctl --type=service --state=active | grep mongod
Graylog can be used with Elasticsearch 7.x; follow the below instructions to install the open-source version of Elasticsearch.
wget -q https://artifacts.elastic.co/GPG-KEY-elasticsearch -O myKey sudo apt-key add myKey echo "deb https://artifacts.elastic.co/packages/oss-7.x/apt stable main" | sudo tee -a /etc/apt/sources.list.d/elastic-7.x.list sudo apt-get update && sudo apt-get install elasticsearch-oss
The above instructions are a derivative from the Elasticsearch install page.
Modify the Elasticsearch configuration file (
/etc/elasticsearch/elasticsearch.yml), set the cluster name to Graylog, and uncomment
action.auto_create_index: false to enable the action:
sudo tee -a /etc/elasticsearch/elasticsearch.yml > /dev/null <<EOT cluster.name: graylog action.auto_create_index: false EOT
After you have modified the configuration, you can start Elasticsearch and verify it is running.
sudo systemctl daemon-reload sudo systemctl enable elasticsearch.service sudo systemctl restart elasticsearch.service sudo systemctl --type=service --state=active | grep elasticsearch
Now install the Graylog repository configuration and Graylog itself with the following commands:
wget https://packages.graylog2.org/repo/packages/graylog-4.3-repository_latest.deb sudo dpkg -i graylog-4.3-repository_latest.deb sudo apt-get update && sudo apt-get install graylog-server graylog-enterprise-plugins graylog-integrations-plugins graylog-enterprise-integrations-plugins
Edit the Configuration File
Read the instructions within the configurations file and edit as needed, located at
/etc/graylog/server/server.conf. Additionally, add
root_password_sha2 as these are mandatory and Graylog will not start without them.
To create your
root_password_sha2 run the following command:
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 hostname or a public IP address of the machine to which you can connect. More information about these settings can be found in Configuring the web interface.
The last step is to enable Graylog during the operating system’s startup and verify it is running.
sudo systemctl daemon-reload sudo systemctl enable graylog-server.service sudo systemctl start graylog-server.service sudo systemctl --type=service --state=active | grep graylog
Multiple Server Setup
If you plan to have multiple servers taking care of different roles in your cluster as 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.