You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@mesos.apache.org by "Martin Bydzovsky (JIRA)" <ji...@apache.org> on 2016/01/04 16:59:39 UTC
[jira] [Updated] (MESOS-4279) Graceful restart of docker task
[ https://issues.apache.org/jira/browse/MESOS-4279?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Martin Bydzovsky updated MESOS-4279:
------------------------------------
Description:
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.
was:
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 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 app restart I get expected result - task receives sigterm and dies peacefully (during my script-specified 2 seconds)
But when i wrap this python script in 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 a chance to do any cleanup.
> 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
> Reporter: Martin Bydzovsky
>
> 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)