Add GPG Key

wget -O - https://apt.releases.hashicorp.com/gpg | sudo gpg --dearmor -o /usr/share/keyrings/hashicorp-archive-keyring.gpg

Add Repository

echo "deb [arch=$(dpkg --print-architecture) 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

Install

sudo apt update && sudo apt install consul

Check Version

which consul
consul version

Enable Fire Wall

sudo ufw allow ssh
sudo ufw enable

for i in 8300/tcp 8301/tcp 8302/tcp 8400/tcp 8500/tcp 8600/tcp
do sudo ufw allow $i
done

sudo ufw status

Configure and Restart Consul Service

sudo systemctl stop consul

save the generated key

consul keygen

sudo nano /etc/consul.d/consul.hcl

datacenter = "my-dc-1"

data_dir = "/opt/consul"

client_addr = "0.0.0.0"

domain = "consul"

ui = true

server = true

advertise_addr = "127.0.0.1"

bootstrap_expect=1

encrypt = "2I2x0tUjCO6uCpU4S6GQNSSJJkEwKBSjQhU6CB+jdLE="

sudo consul validate /etc/consul.d/

sudo systemctl stop consul
sudo systemctl start consul
sudo systemctl status consul

Test Service

do this after at least one client connected to this server

consul members

consul operator raft list-peers

consul kv put consul/configuration/test_db testkv

consul kv get consul/configuration/test_db

dig @127.0.0.1 -p 8600 consul.service.consul

Visit UI Console

http://localhost:8500