1. Install Required Dependencies
Start by installing necessary tools like unzip, curl, and gnupg:
sudo apt update sudo apt install unzip curl gnupg -y
2. Add HashiCorp’s GPG Key and Repository
Add the HashiCorp GPG key and the official Consul repository:
curl -fsSL https://apt.releases.hashicorp.com/gpg | sudo gpg --dearmor -o /usr/share/keyrings/hashicorp-archive-keyring.gpg echo "deb [signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/hashicorp.list
3. Install Consul
After updating the package index, install Consul with:
sudo apt update sudo apt install consul -y
Verify the installation with:
consul version
4. Configure Consul
Create a configuration directory and a configuration file for the Consul server:
sudo mkdir -p /etc/consul.d sudo nano /etc/consul.d/server.hcl
In server.hcl, add configurations similar to:
datacenter = "dc1"
data_dir = "/opt/consul"
server = true
bootstrap_expect = 1
ui_config {
enabled = true
}
bind_addr = "0.0.0.0"
client_addr = "0.0.0.0"
advertise_addr = "{{ GetInterfaceIP \"eth0\" }}"
5. Set Up Consul as a Systemd Service
Create a systemd service file:
sudo nano /etc/systemd/system/consul.service
Add the following content:
[Unit] Description=Consul Service After=network-online.target Wants=network-online.target [Service] User=consul ExecStart=/usr/bin/consul agent -config-dir=/etc/consul.d Restart=on-failure [Install] WantedBy=multi-user.target
Enable and start the Consul service:
sudo systemctl daemon-reload sudo systemctl enable consul sudo systemctl start consul
6. Open Required Ports
If using a firewall, open Consul’s ports:
sudo ufw allow 8300/tcp 8301/tcp 8301/udp 8302/tcp 8302/udp 8500/tcp 8600/tcp 8600/udp
7. Access the Web UI
Access the Consul web interface by navigating to http://<your-server-ip>:8500.