Installing and Configuring the ELK Stack on CentOS 8
The ELK Stack is a popular stack for collecting, analyzing, and visualizing data. It includes Elasticsearch, Logstash, and Kibana. Installing and configuring the ELK Stack on CentOS 8 might seem challenging, but we’ll guide you through the process.
1. Installing Elasticsearch on CentOS 8
First, let’s install Elasticsearch. Add the Elasticsearch repository:
sudo rpm --import https://artifacts.elastic.co/GPG-KEY-elasticsearch
sudo yum install https://artifacts.elastic.co/packages/7.x/yum-7.x.el8.noarch.rpm
Now install Elasticsearch:
sudo yum install elasticsearch
Start Elasticsearch and enable it on boot:
sudo systemctl start elasticsearch
sudo systemctl enable elasticsearch
2. Installing Logstash on CentOS 8
Next, let’s install Logstash. Add the Logstash repository:
sudo rpm --import https://artifacts.elastic.co/GPG-KEY-elasticsearch
sudo yum install https://artifacts.elastic.co/packages/7.x/yum-7.x.el8.noarch.rpm
Install Logstash:
sudo yum install logstash
Start Logstash and enable it on boot:
sudo systemctl start logstash
sudo systemctl enable logstash
3. Installing Kibana on CentOS 8
Finally, let’s install Kibana. Add the Kibana repository:
sudo rpm --import https://artifacts.elastic.co/GPG-KEY-elasticsearch
sudo yum install https://artifacts.elastic.co/packages/7.x/yum-7.x.el8.noarch.rpm
Install Kibana:
sudo yum install kibana
Start Kibana and enable it on boot:
sudo systemctl start kibana
sudo systemctl enable kibana
4. Configuring the ELK Stack
Now let’s configure the ELK Stack. Open the Logstash configuration file and adjust the settings:
sudo nano /etc/logstash/logstash.yml
Configure Elasticsearch and Kibana in their respective configuration files:
sudo nano /etc/elasticsearch/elasticsearch.yml
sudo nano /etc/kibana/kibana.yml
Restart the ELK Stack to apply the changes:
sudo systemctl restart elasticsearch
sudo systemctl restart logstash
sudo systemctl restart kibana
The ELK Stack is now installed and configured on CentOS 8. You can start using it to collect, analyze, and visualize your data.