How to start below services in docker Entrypoint

Question

I want to start below services when container is running.

sudo service celeryd start
sudo service celerybeat start 
service php7.0-fpm start 
service rsyslog start

Current below command is not working AWS ECS. And throwing some errors.

ENTRYPOINT sudo service celeryd start 
&& sudo service celerybeat start 
&& service php7.0-fpm start 
&& service rsyslog start && bash

Please advise me how to do it

Thanks in advance.

Please, add the stacktrace. Also what is this `&& bash` supposed to do? — Mornor, May 28 '18 at 10:38
sudo is useless, as if your Dockerfile does not have a `USER xxx` directive, you are root, and as said by Ignacio `You should provide a command that doesn't end` so you may at least add at the end `&& sleep infinity` — user2915097, May 28 '18 at 12:40

score 3 · Accepted Answer · answered May 28 '18 at 13:55

3

I don't recommend the overall design since you are running multiple apps inside a single container. You have no error handling or feedback if any one service fails to start. That said, fixing your current problem can be done by using a command that won't exit when there is no input.

ENTRYPOINT service celeryd start \
 && service celerybeat start \
 && service php7.0-fpm start \
 && service rsyslog start \
 && tail -f /dev/null

answered May 28 '18 at 13:55

BMitch

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Do i need to add above entrypoint to task definition as well or just in the dockerfile will be enough ? – GihanS May 28 '18 at 14:02
@user3849082 you simply replace the lines in your dockerfile with these and then rebuild your image. I'm not sure what you mean by adding to the "task definition". – BMitch May 28 '18 at 15:03

Ignacio Millán · Answer 2 · 2018-05-28T14:57:18.313

1

The commands you're trying to execute as entrypoint are a bash expression, so they must be executed inside a bash terminal:

ENTRYPOINT ["/bin/bash", "-c", "sudo service celeryd start && sudo service celerybeat start && sudo service php7.0-fpm start && sudo service rsyslog start && tail -f /dev/null"]

Furthermore, your last command is bash so the container will end right after executing the entrypoint. You should provide a command that doesn't end

edited May 28 '18 at 14:57

answered May 28 '18 at 10:43

Ignacio Millán

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Yes and how to do it ? – GihanS May 28 '18 at 13:50
The `&&` works in the default shell which processes commands when you use the string syntax. No need to use json syntax and then add a shell back manually. The lack of input to bash is the issue. – BMitch May 28 '18 at 13:52
Just edited with the idea from the answer of BMitch: Use tail -f /dev/null for keeping it running forever – Ignacio Millán May 28 '18 at 14:56
You're completely right about the entrypoint, no need of /bin/bash -c and JSON format – Ignacio Millán May 28 '18 at 15:00

score 0 · Answer 3 · answered May 29 '18 at 16:16

0

put all commands start.sh file and give execute permission, Copy that files to docker image while building docker image

write docker file below CMD ["./start.sh"]

answered May 29 '18 at 16:16

Ashok Reddy

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How to start below services in docker Entrypoint

3 Answers3