Steps to Install Graylog Monitoring Tool on Ubuntu 20.04 LTS

Graylog is a free & open source monitoring tool.It provides a web-interface platform & used for log management like structured and unstructured data. It supports Elasticsearch, MongoDB, and Scala.It provides a web interface to visualizes the data.

There are few steps to install & configure Graylog on ubuntu:

Step 1: Update the system.

apt-get update

Step 2: Install the required packages.

apt-get install apt-transport-https gnupg2 uuid-runtime pwgen curl dirmngr

Step 3: Install Java.

apt-get install openjdk-11-jre-headless

  • Check the java version.

java -version

  • Here is the command output.

Install ElasticSearch on system.

Step 4: Add the GPG key & Repo.

wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | sudo apt-key add -
echo "deb https://artifacts.elastic.co/packages/oss-7.x/apt stable main" | sudo tee /etc/apt/sources.list.d/elastic-7.x.list

  • Here is the command output.

  • Update the packages.

apt-get update

  • Install Elasticsearch.

apt-get install elasticsearch-oss

  • Configure the Elasticsearch.yml file.

vim /etc/elasticsearch/elasticsearch.yml

  • Edit & Add the following lines:

cluster.name: graylog
action.auto_create_index: false

  • Here is the command output.

Step 5: Start & Enable the Elasticsearch service.

systemctl daemon-reload
systemctl start elasticsearch
systemctl enable elasticsearch

  • Check the status of elasticSearch.

systemctl status elasticsearch

  • Here is the command output.

  • Verfiy the ElasticSearch using the following command.

curl -X GET http://localhost:9200

  • Here is the command output.

Install MongoDB on system.

Step 6: Update the system.

apt-get update

  • Install Mongodb.

apt-get install mongodb-server

Step 7: Start & Enable the MongoDB.

systemctl start mongodb
systemctl enable mongodb

  • Check the MonogoDB status.

systemctl status mongodb

  • Here is the command output.

Install Graylog Server on System

Step 8: Download & Install the Graylog Repo.

wget https://packages.graylog2.org/repo/packages/graylog-4.1-repository_latest.deb

  • Here is the command output.

  • Install the repo.

dpkg -i graylog-4.1-repository_latest.deb

  • Here is the command output.

Step 9: Update the packages.

apt-get update

  • Install Graylog.

apt-get install graylog-server

Step 10: Run the following command to generate a secret to secure user login passwords.

pwgen -N 1 -s 96

  • Run the following command to generate a secure graylog user password.

echo -n password_here | sha256sum

echo -n password | sha256sum

  • Here is the command output.

  • Copy both commands outputs.
  • Open the Graylog server configuration file.Paste the both commands output as:

vim /etc/graylog/server/server.conf

  • Add the following values:

password_secret = WaCWgE5mWCsrK3j1kKa9Om3jyJaGUHYp3ErqvbVCGhcnihUq0kN65ACiotOjDhsQFE89ZVXsJV5SKlvS2zQfnmBT2d4Pfmpk
root_password_sha2 = 5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8
http_bind_address = 0.0.0.0:9000
rest_listen_uri = http://127.0.0.1:9000/api/
web_listen_uri = http://127.0.0.1:9000/

  • Here is the command output.

Step 11: Start & Enable the Graylog server.

systemctl daemon-reload
systemctl restart graylog-server
systemctl enable graylog-server

  • Check Graylog server status.

systemctl status graylog-server

  • Here is the command output.

Access Graylog web-interface

http://server-ip:9000

  • Here is the  output.
  • Provide the user-name : admin & Password: password
  • Click on Sign In.

  • Now Graylog is Ready.

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