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I am running zookeeper( not thru docker ) on my localhost with port 2181.
Also, trying to run a docker image thru docker compose as follows.
#
# Mesos
#
mesos-master:
image: mesosphere/mesos-master:1.0.3
restart: always
privileged: true
network_mode: host
volumes:
- ~/mesos-data/master:/tmp/mesos
environment:
MESOS_CLUSTER: "mesos-cluster"
MESOS_QUORUM: "1"
MESOS_ZK: "zk://localhost:2181/mesos"
MESOS_PORT: 5000
MESOS_REGISTRY_FETCH_TIMEOUT: "2mins"
MESOS_EXECUTOR_REGISTRATION_TIMEOUT: "2mins"
MESOS_LOGGING_LEVEL: INFO
MESOS_INITIALIZE_DRIVER_LOGGING: "false"
Zookeepr is listening on port 2181, but still my docker process is unable to connect to the zookeeper port 2181.
Is there anything missing?
Thanks
337
You are pointing to localhost from inside your docker container. This means that your docker container tries to connect to the container itself (localhost) on that specific port and NOT on the localhost of your server. You'll need to specify a specific IP to connect or you can run your docker container with the --net="host" option.
$ docker run -d --net="host" ...
This will create your container inside the host network and not inside the default bridge network.
Example:
I create a apache container (default) and map port on 127.0.0.1:80 of the host. So on my server I can curl 127.0.0.1:80.
$ docker run -d -p 80:80 httpd
curl 127.0.0.1:80 from host works:
$ curl localhost:80
<html><body><h1>It works!</h1></body></html>
If I start a help container with curl installed in which I will curl 127.0.0.1:80:
$ docker run --rm tutum/curl /bin/bash -c 'curl 127.0.0.1:80'
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0curl: (7) Failed to connect to 127.0.0.1 port 80: Connection refused
Connection is refused because the container is inside the default bridge network and tries to curl itself on port 80.
Now I start the container inside the host network:
$ docker run --net=host --rm tutum/curl /bin/bash -c 'curl 127.0.0.1:80'
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 45 100 45 0 0 8573 0 --:--:-- --:--:-- --:--:-- 22500
<html><body><h1>It works!</h1></body></html>
The --net=host translated to your docker-compose file means you have to add network_mode: host
103
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