SSH Access to Container Instances

Cloudflare Containers now supports SSH connectivity to running instances, enabling developers to directly access and interact with containerized applications. This capability is accessed through Wrangler, Cloudflare's command-line tool for Workers and Containers.

How to Enable SSH

To use this feature, configure SSH access in your container configuration file (wrangler.jsonc or wrangler.toml):

• Set wrangler_ssh.enabled to true
• Add your ssh-ed25519 public key(s) to the authorized_keys array with a descriptive name

Using SSH

Once configured, connect to a running instance with:

wrangler containers ssh <INSTANCE_ID>

You can also execute single commands without an interactive session:

wrangler containers ssh <INSTANCE_ID> -- ls -al

Find instance IDs using wrangler containers instances <APPLICATION>.

Use Cases

SSH access enables developers to:

• Debug running container applications in real-time
• Inspect active processes and their state
• Execute one-off diagnostic or maintenance commands
• Troubleshoot issues without redeployment