Hi,
I can’t access my application using mesos-dns. Neither port 8123 nor 8080
responding. I think I miss something in configuration but can’t find problem
myself.
I have a very basic java application that listen on port 8080. I have created
docker image and deployed this application to marathon.
My deployment configuration is following:
$ cat app-slick.json
{
"container": {
"type": "DOCKER",
"docker": {
"image": "edvorkin/slick-swagger:1",
"network": "BRIDGE",
"portMappings": [
{ "containerPort": 8080, "hostPort": 0, "servicePort": 9000,
"protocol": "tcp" }
]
}
},
"cmd": "java -jar /tmp/spray-slick-swagger-assembly-0.0.2.jar Boot",
"id": "slick-swagger-demo",
"instances": 1,
"cpus": 0.1,
"mem": 256,
"constraints": [
["hostname", "UNIQUE"]
]
}
Application successfully deployed to 2 nodes and assigned random port of 31990
and 31000 on each node.
Now I installed and configured Mesos-DNS with config.json
{
"zk": "zk://172.31.50.58:2181,172.31.50.59:2181,172.31.50.60:2181/mesos",
"refreshSeconds": 60,
"ttl": 60,
"domain": "mesos",
"port": 53,
"resolvers": ["172.31.0.2"],
"timeout": 5,
"email": "root.mesos-dns.mesos"
}
and I got following:
$ dig slick-swagger-demo.marathon.mesos
; <<>> DiG 9.9.4-RedHat-9.9.4-18.el7_1.1 <<>> slick-swagger-demo.marathon.mesos
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 20376
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;slick-swagger-demo.marathon.mesos. IN A
;; ANSWER SECTION:
slick-swagger-demo.marathon.mesos. 60 IN A 172.31.11.202
slick-swagger-demo.marathon.mesos. 60 IN A 172.31.11.203
;; Query time: 1 msec
;; SERVER: 54.86.164.193#53(54.86.164.193)
;; WHEN: Thu Jul 16 15:23:04 UTC 2015
;; MSG SIZE rcvd: 83
curl http://localhost:8123/v1/services/_slick-swagger-demo._tcp.marathon.mesos
|python -m json.tool
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 289 100 289 0 0 1916 0 --:--:-- --:--:-- --:--:-- 1926
[
{
"host": "slick-swagger-demo-15491-s42.marathon.mesos.",
"ip": "172.31.11.203",
"port": "31990",
"service": "_slick-swagger-demo._tcp.marathon.mesos"
},
{
"host": "slick-swagger-demo-20495-s43.marathon.mesos.",
"ip": "172.31.11.202",
"port": "31000",
"service": "_slick-swagger-demo._tcp.marathon.mesos"
}
]
But when I try to access my application using dns name, I can’t get get
response.
curl http://slick-swagger-demo.marathon.mesos:8080
curl: (7) Failed connect to slick-swagger-demo.marathon.mesos:8080; Connection
refused
curl slick-swagger-demo.marathon.mesos:8123
404: Page Not Found
curl slick-swagger-demo.marathon.mesos:31990 – produce desired results, but
that binded to a random port.
How do I configure mapping between random ports and my service?
I would like to be able to access my server on port 80 for example
Curl http://slick-swagger-demo.marathon.mesos
Thanks
Eugene
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