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Alexander Rukletsov updated MESOS-4279: --------------------------------------- Shepherd: Alexander Rukletsov (was: Timothy Chen) > Graceful restart of docker task > ------------------------------- > > Key: MESOS-4279 > URL: https://issues.apache.org/jira/browse/MESOS-4279 > Project: Mesos > Issue Type: Bug > Components: containerization, docker > Affects Versions: 0.25.0, 0.26.0, 0.27.2 > Reporter: Martin Bydzovsky > Assignee: Qian Zhang > Labels: docker, mesosphere > > I'm implementing a graceful restarts of our mesos-marathon-docker setup and I > came to a following issue: > (it was already discussed on > https://github.com/mesosphere/marathon/issues/2876 and guys form mesosphere > got to a point that its probably a docker containerizer problem...) > To sum it up: > When i deploy simple python script to all mesos-slaves: > {code} > #!/usr/bin/python > from time import sleep > import signal > import sys > import datetime > def sigterm_handler(_signo, _stack_frame): > print "got %i" % _signo > print datetime.datetime.now().time() > sys.stdout.flush() > sleep(2) > print datetime.datetime.now().time() > print "ending" > sys.stdout.flush() > sys.exit(0) > signal.signal(signal.SIGTERM, sigterm_handler) > signal.signal(signal.SIGINT, sigterm_handler) > try: > print "Hello" > i = 0 > while True: > i += 1 > print datetime.datetime.now().time() > print "Iteration #%i" % i > sys.stdout.flush() > sleep(1) > finally: > print "Goodbye" > {code} > and I run it through Marathon like > {code:javascript} > data = { > args: ["/tmp/script.py"], > instances: 1, > cpus: 0.1, > mem: 256, > id: "marathon-test-api" > } > {code} > During the app restart I get expected result - the task receives sigterm and > dies peacefully (during my script-specified 2 seconds period) > But when i wrap this python script in a docker: > {code} > FROM node:4.2 > RUN mkdir /app > ADD . /app > WORKDIR /app > ENTRYPOINT [] > {code} > and run appropriate application by Marathon: > {code:javascript} > data = { > args: ["./script.py"], > container: { > type: "DOCKER", > docker: { > image: "bydga/marathon-test-api" > }, > forcePullImage: yes > }, > cpus: 0.1, > mem: 256, > instances: 1, > id: "marathon-test-api" > } > {code} > The task during restart (issued from marathon) dies immediately without > having a chance to do any cleanup. -- This message was sent by Atlassian JIRA (v6.3.4#6332)