ToInstall Elasticsearch on Centos 7, you can follow these steps. Note that software versions may have changed since my last update, so it’s always a good idea to check the official Elasticsearch documentation for the latest instructions.
1. Install Java:
Elasticsearch requires Java to run. You can install OpenJDK with the following command:
sudo yum install java-1.8.0-openjdk
2. Import the Elasticsearch GPG Key:
sudo rpm --import https://artifacts.elastic.co/GPG-KEY-elasticsearch
3. Add Elasticsearch Repository:
Create a new repository file for Elasticsearch:
sudo nano /etc/yum.repos.d/elasticsearch.repo
Add the following lines to the file:
[elasticsearch-7.x]
name=Elasticsearch repository for 7.x packages
baseurl=https://artifacts.elastic.co/packages/7.x/yum
gpgcheck=1
gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch
enabled=1
autorefresh=1
type=rpm-md
Save and exit the text editor.
4. Install Elasticsearch:
sudo yum install elasticsearch
5. Configure Elasticsearch:
Open the Elasticsearch configuration file:
sudo nano /etc/elasticsearch/elasticsearch.yml
Find and configure the following settings:
# Set the cluster name
cluster.name: my-cluster# Set the node name
node.name: my-node
# Set the network host to bind to a specific IP address
network.host: 127.0.0.1
# Set the discovery type to single-node
discovery.type: single-node
Save and exit the text editor.
6. Start and Enable Elasticsearch:
sudo systemctl start elasticsearch
sudo systemctl enable elasticsearch
7. Test Elasticsearch:
You can test if Elasticsearch is running by accessing its RESTful API. Open your web browser and navigate to:
http://localhost:9200
You should see a JSON response indicating that Elasticsearch is up and running.
That’s it! Elasticsearch should now be installed and configured on your CentOS 7 server. Remember to check the official Elasticsearch documentation for any updates or changes to the installation process.
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