What's already configured
After the one-click deploy, Portainer Server runs as a Docker container with /var/run/docker.sock mounted from the host, which is how it manages containers without a separate agent on the same machine. The UI listens on port 9443 over HTTPS with a self-signed certificate generated automatically; port 8000 stays open only if you plan to connect Edge Agents from remote nodes, and it can be ignored otherwise. The container restarts automatically if it stops, matching Portainer's own documented --restart=always policy.
First login
Navigate to https://your-server-ip:9443 and you'll land on the "Create initial admin user" screen. This has to happen within 5 minutes of the container's first start — miss the window and Portainer locks itself with a timeout error, requiring a container restart from the Leneex panel to get a fresh 5-minute window. Set a username (default suggestion is "admin") and a password of at least 12 characters, then confirm to finish initialization.
First things to check
After logging in, choose "Docker" as the environment type to manage the local engine — this connects Portainer to the same Docker socket it's already mounted to, no agent installation needed for the local host.