Graylog is an open-source log management platform that helps collect, process, and analyze log data from various sources. It allows organizations to centralize their log data, gain insights, and troubleshoot issues more effectively.
Step 1: Update System
Before installing Graylog, it is recommended to update the system packages to the latest version. Open the terminal and run the following command:
sudo dnf update -y
Step 2: Install Java
Graylog requires Java to run. Install OpenJDK with the following command:
sudo dnf install java-11-openjdk-devel -y
Step 3: Configure Elasticsearch
Graylog uses Elasticsearch as its backend storage. Modify the Elasticsearch configuration file:
sudo nano /etc/elasticsearch/elasticsearch.yml
Uncomment and set the following configurations:
Save and exit the file, then start and enable the Elasticsearch service:
sudo systemctl enable --now elasticsearch
Step 4: Install MongoDB
MongoDB is used to store Graylog configurations. Install MongoDB with the following command:
Now, you can access the Graylog web interface by opening your browser and navigating to http://your_server_ip:9000/. You will be prompted to create a new administrator account. Follow the on-screen instructions to complete the setup.
Congratulations! You have successfully installed Graylog on CentOS 8.
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