Version 1.7. This version is no longer supported. For information about how to upgrade to version 1.8, see Upgrading Anthos on bare metal in the 1.8 documentation. For more information about supported and unsupported versions, see the Version history page in the latest documentation.

Configuring Ubuntu

You must configure the base operating system of your node machines to use Google Distributed Cloud. This page contains the steps you need to take to complete the needed configuration. For more information about troubleshooting Google Distributed Cloud requirements, see the troubleshooting guides.

Before you begin

Ensure you are using a supported version of your operating system. Google Distributed Cloud supports the following versions for Ubuntu:

18.04
20.04

Validate package manager:

  sudo apt-get check

The output should show no errors and look similar to the following example:

  # Reading package lists... Done
  # Building dependency tree
  # Reading state information... Done

Disabling `AppArmor`

Stop AppArmor:
```
sudo systemctl stop apparmor
```
Disable AppArmor:
```
sudo systemctl disable apparmor
```

Check that AppArmor appears as inactive:

sudo systemctl status apparmor | grep "Active"

For example:

  # Active: inactive (dead) ...

Disabling `ufw`

Disable ufw:
```
sudo ufw disable
```
Check that ufw is disabled:
```
sudo ufw status
# Status: inactive
```

Configuring Docker 19.03+ on your workstation

Google Distributed Cloud helps you install Docker on your bare metal machines in the following scenarios:

If your bare metal machines don't have Docker installed, bmctl installs 19.03.13 or later.
If your bare metal machines have Docker 19.03.5 or earlier installed, bmctl upgrades Docker to version 19.03.13 or later.

Follow these steps to manually install Docker:

Remove any previous Docker version:

sudo apt-get remove docker docker-engine docker.io containerd runc

Update your package manager:
```
sudo apt-get update
```

Install Docker 19.03+:

sudo apt-get install \
  apt-transport-https \
  ca-certificates \
  curl \
  gnupg-agent \
  software-properties-common \
  docker.io

Verify you are now running version 19.03+:
```
sudo docker version
```

Compare your output with the following example to ensure the Client and Server versions are 19.03+ :

 Client: Docker Engine - Community
 Version:           19.03.13
 ...
 Server: Docker Engine - Community
  Engine:
  Version:          19.03.13

Configuring Ubuntu