Introduction
CockroachDB is a distributed SQL database that provides high availability, strong consistency, and horizontal scalability. This tutorial will guide you through the process of setting up a CockroachDB cluster on Ubuntu 22.04.
Prerequisites
Before you begin, ensure you have:
- Three or more Ubuntu 22.04 servers
- Root or sudo privileges on each server
Step 1: Install CockroachDB
Download the CockroachDB binary:
wget -qO- https://binaries.cockroachdb.com/cockroach-latest.linux-amd64.tgz | tar xvz
Move the CockroachDB binary to the system path:
sudo mv cockroach-v*/cockroach /usr/local/bin/
Step 2: Configure CockroachDB Nodes
On each server, create a CockroachDB data directory:
mkdir -p /var/lib/cockroachdb
Initialize the CockroachDB node on each server:
cockroach init --insecure --host=:26257
Replace <node_ip> with the IP address of each server.
Step 3: Start CockroachDB Nodes
Start CockroachDB nodes on each server:
cockroach start --insecure --store=/var/lib/cockroachdb --host=
Replace <node_ip> with the IP address of each server.
Step 4: Access the CockroachDB Web UI
Access the CockroachDB web UI in your web browser at http://:8080.
Step 5: Join Nodes to the Cluster
On one of the servers, run the following command to join the other nodes to the cluster:
cockroach start --insecure --store=/var/lib/cockroachdb --join=:26257,:26257,:26257
Replace <node1_ip>, <node2_ip>, and <node3_ip> with the IP addresses of the other servers.
Conclusion
Congratulations! You have successfully set up a CockroachDB cluster on Ubuntu 22.04. You can now start using CockroachDB for your distributed SQL database needs.
