• Set up a workspace
  • Prerequisites
  • Create a workspace
• Connect to a workspace with SSH
  • Set up the GitLab workspaces proxy for SSH connections
  • Update your runtime images
• Related topics
• Troubleshooting
  • Failed to renew lease when creating a workspace

Workspace configuration

You can use workspaces to create and manage isolated development environments for your GitLab projects. Each workspace includes its own set of dependencies, libraries, and tools, which you can customize to meet the specific needs of each project.

Set up a workspace

Prerequisites

• Set up a Kubernetes cluster that the GitLab agent supports. See the supported Kubernetes versions.
• Ensure autoscaling for the Kubernetes cluster is enabled.
• In the Kubernetes cluster:
  • Verify that a default storage class is defined so that volumes can be dynamically provisioned for each workspace.
  • Install an Ingress controller of your choice (for example, ingress-nginx) and make that controller accessible over a domain.
    • In development environments, add an entry to the /etc/hosts file or update your DNS records.
    • In production environments, point *.<workspaces.example.dev> and <workspaces.example.dev> to the load balancer exposed by the Ingress controller.
  • Set up the GitLab workspaces proxy.
  • Install and configure the GitLab agent.
• You must have at least the Developer role in the root group.
• In each project you want to use this feature for, create a devfile:
  1. On the left sidebar, select Search or go to and find your project.
  2. In the root directory of your project, create a file named .devfile.yaml. You can use one of the example configurations.
• Ensure the container images used in the devfile support arbitrary user IDs.

Create a workspace

To create a workspace:

1. On the left sidebar, select Search or go to.
2. Select Your work.
3. Select Workspaces.
4. Select New workspace.
5. From the Project dropdown list, select a project with a .devfile.yaml file.
6. From the Cluster agent dropdown list, select a cluster agent owned by the group the project belongs to.
7. From the Git reference dropdown list, select the branch, tag, or commit hash GitLab uses to create the workspace.
8. In Devfile location, enter the path to the devfile you use to configure the workspace. If your devfile is not in the root directory of your project, specify a relative path.
9. In Workspace automatically terminates after, enter the number of hours until the workspace automatically terminates. This timeout is a safety measure to prevent a workspace from consuming excessive resources or running indefinitely.
10. Select Create workspace.

The workspace might take a few minutes to start. To open the workspace, under Preview, select the workspace. You also have access to the terminal and can install any necessary dependencies.

Connect to a workspace with SSH

Prerequisites:

• SSH must be enabled for the workspace.
• You must have a TCP load balancer that points to the GitLab workspaces proxy.

To connect to a workspace with an SSH client:

1. Run this command:

   ssh <workspace_name>@<ssh_proxy>
   

2. For the password, enter your personal access token with at least the read_api scope.

When you connect to gitlab-workspaces-proxy through the TCP load balancer, gitlab-workspaces-proxy examines the username (workspace name) and interacts with GitLab to verify:

• The personal access token
• User access to the workspace

Set up the GitLab workspaces proxy for SSH connections

Prerequisites:

• You must have an SSH host key for client verification.

SSH is now enabled by default in the GitLab workspaces proxy. To set up gitlab-workspaces-proxy with the GitLab Helm chart:

1. Run this command:

   ssh-keygen -f ssh-host-key -N '' -t rsa
   export SSH_HOST_KEY=$(pwd)/ssh-host-key
   

2. Install gitlab-workspaces-proxy with the generated SSH host key:

   helm upgrade --install gitlab-workspaces-proxy \
         gitlab-workspaces-proxy/gitlab-workspaces-proxy \
         --version 0.1.8 \
         --namespace=gitlab-workspaces \
         --create-namespace \
         --set="auth.client_id=${CLIENT_ID}" \
         --set="auth.client_secret=${CLIENT_SECRET}" \
         --set="auth.host=${GITLAB_URL}" \
         --set="auth.redirect_uri=${REDIRECT_URI}" \
         --set="auth.signing_key=${SIGNING_KEY}" \
         --set="ingress.host.workspaceDomain=${GITLAB_WORKSPACES_PROXY_DOMAIN}" \
         --set="ingress.host.wildcardDomain=${GITLAB_WORKSPACES_WILDCARD_DOMAIN}" \
         --set="ingress.tls.workspaceDomainCert=$(cat ${WORKSPACES_DOMAIN_CERT})" \
         --set="ingress.tls.workspaceDomainKey=$(cat ${WORKSPACES_DOMAIN_KEY})" \
         --set="ingress.tls.wildcardDomainCert=$(cat ${WILDCARD_DOMAIN_CERT})" \
         --set="ingress.tls.wildcardDomainKey=$(cat ${WILDCARD_DOMAIN_KEY})" \
         --set="ssh.host_key=$(cat ${SSH_HOST_KEY})" \
         --set="ingress.className=nginx"
   

Update your runtime images

To update your runtime images for SSH connections:

1. Install sshd in your runtime images.
2. Create a user named gitlab-workspaces to allow access to your container without a password.

FROM golang:1.20.5-bullseye

# Install `openssh-server` and other dependencies
RUN apt update \
    && apt upgrade -y \
    && apt install  openssh-server sudo curl git wget software-properties-common apt-transport-https --yes \
    && rm -rf /var/lib/apt/lists/*

# Permit empty passwords
RUN sed -i 's/nullok_secure/nullok/' /etc/pam.d/common-auth
RUN echo "PermitEmptyPasswords yes" >> /etc/ssh/sshd_config

# Generate a workspace host key
RUN ssh-keygen -A
RUN chmod 775 /etc/ssh/ssh_host_rsa_key && \
    chmod 775 /etc/ssh/ssh_host_ecdsa_key && \
    chmod 775 /etc/ssh/ssh_host_ed25519_key

# Create a `gitlab-workspaces` user
RUN useradd -l -u 5001 -G sudo -md /home/gitlab-workspaces -s /bin/bash gitlab-workspaces
RUN passwd -d gitlab-workspaces
ENV HOME=/home/gitlab-workspaces
WORKDIR $HOME
RUN mkdir -p /home/gitlab-workspaces && chgrp -R 0 /home && chmod -R g=u /etc/passwd /etc/group /home

# Allow sign-in access to `/etc/shadow`
RUN chmod 775 /etc/shadow

USER gitlab-workspaces

Related topics

• Quickstart guide for GitLab remote development workspaces
• Set up your infrastructure for on-demand, cloud-based development environments in GitLab

Troubleshooting

Failed to renew lease when creating a workspace

You might not be able to create a workspace due to a known issue in the GitLab agent for Kubernetes. The following error message might appear in the agent’s log:

{"level":"info","time":"2023-01-01T00:00:00.000Z","msg":"failed to renew lease gitlab-agent-remote-dev-dev/agent-123XX-lock: timed out waiting for the condition\n","agent_id":XXXX}

This issue occurs when an agent instance cannot renew its leadership lease, which results in the shutdown of leader-only modules including the remote_development module. To resolve this issue, restart the agent instance.