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1. Confirm how Restreamer is running
These steps apply when Restreamer runs as a Docker container on your VPS. The Restreamer Linux installation guide covers Docker deployments on 64-bit Intel/AMD systems and current Linux distributions such as Ubuntu and Debian. If your installation uses a different method, such as a manually managed process or another container platform, Docker restart policies will not control it.
Before making changes, identify the container and inspect its current configuration:
- Run
docker ps -ato find the Restreamer container, including one that is currently stopped. - Record its name or ID, image, port mappings, environment variables, mounts, and any hardware-specific runtime options. Use
docker inspect <container>to review its configuration and current restart policy. - Check that configuration and data are stored persistently. Restreamer’s guide shows host directories mounted into
/core/configand/core/data; preserve the actual paths used by your deployment.
Do not recreate a container from a shortened example unless you have accounted for all the options in your existing configuration.
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2. Set a restart policy on the container
Update the existing container
If the container already exists and was not created with --rm, update its policy without recreating it:
docker update --restart unless-stopped <container>
Replace <container> with the name or ID shown by docker ps -a. Docker documents this command for changing a container’s restart policy. Check the result with docker inspect <container>; the policy is shown under the container’s host configuration.
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Set the policy when recreating the container
If you need to recreate the container, include --restart unless-stopped in the new docker run command and carry over the current image, mounts, ports, environment, and runtime options. Do not add --rm: Docker says that using --restart together with --rm results in an error. This is especially worth noting because the Restreamer Quick Start example includes both flags; adjust it before using that example to create a container that should restart automatically.
Restreamer’s Linux guide shows common examples including web access on ports 8080 and 8181, RTMP on 1935, RTMPS on 1936, and SRT on UDP 6000. These are examples, not a replacement for your own settings: retain the host-side mappings and protocols your installation actually uses.
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3. Choose between unless-stopped and always
| Policy | What happens after a manual stop | When it fits |
|---|---|---|
unless-stopped |
A container you manually stopped stays stopped when the Docker daemon restarts. | Choose it when an intentional stop should remain in effect across a VPS reboot. |
always |
Docker restarts a stopped container when the daemon restarts, including one previously stopped manually. After a manual stop, it restarts only when the daemon or container is manually restarted. | Choose it when the container should resume after Docker restarts, even if it had been manually stopped. |
Both policies are Docker-supported ways to start containers automatically when they exit or when Docker restarts. Restreamer’s Linux guide uses --restart=always in its guidance, but the right choice depends on whether you want a manual stop to persist. See Docker’s container run reference for the policy behavior.
4. Ensure Docker starts when the VPS boots
A container policy can act only when Docker is running. Docker says Debian and Ubuntu start Docker at boot by default. On other systemd-based Linux distributions, Docker’s Linux post-installation steps give these commands to enable Docker and containerd at startup:
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sudo systemctl enable docker.service
sudo systemctl enable containerd.service
Check your VPS distribution and how Docker was installed before changing service startup. You can inspect Docker’s service state with systemctl status docker; enabling a service for boot and checking whether it is running now are separate checks.
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5. Verify the setup after reboot
- Reboot the VPS using your provider’s console or the normal system method for your distribution.
- After the server is reachable, run
docker ps. Confirm Restreamer appears as running. - If it is absent, run
docker ps -ato see whether the container exited, then inspect it withdocker inspect <container>for its state, restart policy, and restart count. - Review container logs with
docker logs <container>. If necessary, check Docker events and the Docker service logs for evidence of daemon startup or container failures. - Test Restreamer’s web interface and the stream path you rely on. A running container alone does not establish that an upstream source is available or that streaming is healthy.
6. Troubleshoot if Restreamer does not return
- Docker is not running after the reboot: Check
systemctl status dockerand confirm that Docker is enabled for boot on your distribution. Enable the appropriate services only after verifying the installation method. - The container is stopped but has no restart policy: Inspect the policy with
docker inspect <container>, then usedocker update --restart unless-stopped <container>if the container was not created with--rm. - The container was created with
--rm: Docker does not allow setting a restart policy on that container, and--rmcannot be combined with--restartat creation. Recreate it without--rm, preserving the existing run configuration. - It exits immediately on its first start: Docker’s restart policy takes effect only after the container has started successfully and Docker has monitored it for at least 10 seconds. Inspect logs and the container configuration to diagnose the startup failure; a policy does not fix a bad configuration.
- The container is running but Restreamer is unreachable: Check the preserved port mappings, firewall rules, and whether the expected address and protocol are available. A restart policy does not restore missing network connectivity.
- The interface works but the stream does not: Check Restreamer’s logs and the upstream source. Docker can restart the application, but the policy does not establish that the source is ready or repair application-level problems.
For production deployments, Restreamer’s official recommendations strongly recommend its official Docker images to reduce dependency and operating-system mismatch issues. That recommendation does not establish one release tag as the latest or best choice for every VPS.
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