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Ethereum: Docker containers (safe infrastructure), exit to ubuntu OS
Recently, I was facing a challenge to implement our Ethereum -based Ubuntu 22.04 infrastructure using Docker Compose. Despite the fact that after creating the necessary configurations and releasing the Docker containers, several of them did not answer or leave properly.
To eliminate this problem, I decided to take a closer look at the Docker handling container exits and what configuration options can be adjusted to prevent such problems in the future.
What happens when the Docker containers come out?
When the Docker container comes out, it is interrupted by the system. This process is activated automatically after the specified time or when the container receives a signal. The exact behavior depends on the specific version and configuration of Docker.
Ubuntu 22.04 has introduced new features that can help prevent containers to avoid unexpectedly. One of these features is the use of the “exposition” teams to direct the signals to the container, not to terminate it immediately.
Docker Configuration Make Safe Infrastructure
To configure our safe infrastructure using Docker Compose, we need to update the Docker-compose.yml file to include the following parameters:
`Yaml
Version: “3”
Services:
Ethereum node:
Image: Ethereum/Node: V20.4-Slim
reveal:
– “0.0.0.0: 2224”
– “/Dev/null”
signal to stop containers
Tom:
– ./node:/home/ethereum/node
`
The Expose Directive is used to indicate which port should be exposed to a container while setting a “/dev/null” as a signal to be used after stopping containers. This will ensure that our Ethereum node continues to operate, even if the Docker Compose file is modified or the system breaks down.
Alternative methods
If you are facing Ethereum -based infrastructure problems at Ubuntu 22.04, there are other configuration options:
1
`Yaml
Version: “3”
Services:
Ethereum node:
Image: Ethereum/Node: V20.4-Slim
reveal:
– “0.0.0.0: 2224”
– “/Dev/null”
signal to stop containers
Tom:
– ./node:/home/ethereum/node
`
However, this approach may not be inappropriate for all cases of use.
2.
`Yaml
Version: “3”
Services:
Ethereum node:
Image: Ethereum/Node: V20.4-Slim
reveal:
– “0.0.0.0: 2224”
Tom:
– ./node:/home/ethereum/node
`
Again, this approach may be unsuitable for all cases of use.
Conclusion
To remove the trial and prevent the Docker containers to get out of Ubuntu 22.04 unexpectedly, consider using the “exposition” directive to direct the signals to containers, not immediately interrupted them. You can also experiment with alternative attitudes such as NE-EXIT or NO-NUC-PROK to see if they help solve your problems.
Note
: The exact configuration options and behavior may vary depending on your specific use and the Docker version. Always read the official Docker documentations for more information on container management and signal management.