SSH Access 2 Azure Arc-enabled servers (Ubuntu)

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SSH for Arc-enabled servers enables SSH based connections to Arc-enabled servers without requiring a public IP address or additional open ports.

Prerequisites:

• Agent version of 1.13.21320.014 or higher (see link)

# Check Connected Machine Agent Config (on the arc enabled server)
azcmagent show

• Working SSH - Service

# Check SSH - Service (on the arc enabled server)
sudo service ssh status

• Compatible regions

eastus2euap, eastus, eastus2, westus2, southeastasia, westeurope, northeurope, westcentralus, southcentralus, uksouth, australiaeast, francecentral, japaneast, eastasia, koreacentral, westus3, westus, centralus, northcentralus.

• RBAC - Role - Virtual Machine Local User Login role (if you want to login with your azure credentials without knowing a local user)
• HybridConnectivity resource provider

# Alternate way via Azure CLI
az provider show -n Microsoft.HybridConnectivity
az provider register -n Microsoft.HybridConnectivity

# Enable Port 22 for Incoming Connections via Arc (on the arc enabled server)
azcmagent config set incomingconnections.ports 22

# Check Config (on the arc enabled server)
azcmagent config list

Connecting to the arc enabled Server through the Cloud Shell via SSH

# Check for the SSH Extension
az

# Connecting from the Cloud via ARC over SSH

az ssh arc --resource-group <ressource group> --name <arc enabled server name> --local-user <local user>

References:

https://www.cyberciti.biz/faq/howto-start-stop-ssh-server/

https://it-infrastructure.solutions/onboarding-azure-arc-linux-ubuntu/