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Security
Keycloak
Open-source identity and access management (SSO/OIDC).
About
Runs Keycloak in Docker with a generated administrator password, ready to configure realms, clients and identity providers for single sign-on across your applications.
Admin credentials are saved to /root/keycloak-credentials.txt. This starts Keycloak in development mode (start-dev) — switch to a production configuration with a real database and TLS before going live.
Ports opened by the installer
8080/tcp · Keycloak
Install script (runs as cloud-init user-data on first boot)
#!/bin/bash set -e apt-get update -y apt-get install -y ca-certificates curl gnupg install -m 0755 -d /etc/apt/keyrings curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc chmod a+r /etc/apt/keyrings/docker.asc . /etc/os-release echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu $VERSION_CODENAME stable" > /etc/apt/sources.list.d/docker.list apt-get update -y apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin systemctl enable --now docker ADMIN_PASS=$(openssl rand -base64 18 | tr -dc 'A-Za-z0-9') docker run -d --name keycloak --restart=always -p 8080:8080 -e KC_BOOTSTRAP_ADMIN_USERNAME=admin -e KC_BOOTSTRAP_ADMIN_PASSWORD="$ADMIN_PASS" quay.io/keycloak/keycloak:latest start-dev echo "admin / $ADMIN_PASS" > /root/keycloak-credentials.txt
Minimum requirements
- vCPU
- 2
- Memory
- 2 GB
- Disk
- 20 GB
- Base image
- ubuntu
