dcron | 轻量分布式定时任务库 a lightweight distributed job scheduler library | Cron Utils library
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kandi X-RAY | dcron Summary
轻量分布式定时任务库 a lightweight distributed job scheduler library
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QUESTION
I have created a cron with crond + Alpine in Google Cloud Run
All work, but after minutes the cron is stopped when container no receive any request across http.
But if you do not reload the web page after at least 30 minutes cron is stopped.
Any idea what is wrong?
This is my dockerfile.
...ANSWER
Answered 2020-Dec-13 at 00:47Nothing is wrong in respect to how Cloud Run is designed.
When there are no requests, the Cloud Run container is suspended. This means you cannot do background tasks. Cloud Run is an HTTP Request/Response system. When Cloud Run returns the HTTP response and there are no other requests being processed, your CPU is stopped.
After startup, you should only expect to be able to do computation within the scope of a request: a container instance does not have any CPU allocated if it is not processing a request.
QUESTION
I want to create a container using Docker which is will be responsible for starting recurrent rake tasks based on the Whenever gem's configuration. I have a plain ruby project (without rails/sinatra) with the following structure:
Gemfile:
...ANSWER
Answered 2019-Mar-07 at 04:48This is the solution to the problem I listed above. I had some issues at the Dockerfile
and schedule.rb
. This is what I had to change to make it work correctly.
Dockerfile
- wrong echo call
- wrong bundle command
- change ENTRYPOINT instead of CMD
QUESTION
My problem is when run cron and rackup service for ruby sinatra in docker.
file cronjobs
* * * * * cd /app && rake parser >> cron.log 2>&1
file Dockerfile
...ANSWER
Answered 2019-Feb-07 at 23:35Docker container is running while main process inside it is running. So if you want to run two services inside docker container, one of them has to be run in a background mode.
So, CMD
layer should be the following:
QUESTION
I am trying to create a docker image based on alpine:3.7
, but I get errors while installing some packages with apk add
.
Example:
...ANSWER
Answered 2018-Feb-20 at 20:15You have an issue with the following packages: apache2-suexec
, host
, lpr
and time
.
Alpine has some other package structure than main Linux OSs:
apache2-suexec
is a part ofapache2
package;host
is a part ofbind-tools
package;lpr
is a part ofcups-client
package;time
is already in alpine image. It usesbusybox
'stime
utility.
So, the final Dockerfile
is:
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