Steps to reproduce

1. Pulled this git repo
2. Did docker-compose up -d of Docker/docker-compose.yaml

➜ Docker git:(master) docker-compose ps
Name Command State Ports

docker_web_1 python app.py Up 0.0.0.0:3000->5000/tcp
redis docker-entrypoint.sh redis ... Up 6379/tcp

➜ Docker git:(master) curl localhost:3000
curl: (7) Failed to connect to localhost port 3000: Connection refused

Hi all, I am trying to start minikube with the examples, but when I check pods status

bryanleekw@nb1:~/Projects/kubernetes-101/Kubernetes$ kubectl get pods
NAME READY STATUS RESTARTS AGE
my-web-5f796bf89-c495j 0/1 ImagePullBackOff 0 1d
redis 1/1 Running 0 15m
web 1/1 Running 0 15m
web-hr4jv 1/1 Running 0 15m

================================================
I check the pods status by describe, and unable to pull that images
bryanleekw@nb1:~/Projects/kubernetes-101/Kubernetes$ kubectl describe pods my-web-5f796bf89-c495j
Name: my-web-5f796bf89-c495j
Namespace: default
Node: minikube/192.168.99.100
Start Time: Wed, 03 Jan 2018 22:52:14 +0800
Labels: pod-template-hash=193526945
run=my-web
Annotations: kubernetes.io/created-by={"kind":"SerializedReference","apiVersion":"v1","reference":{"kind":"ReplicaSet","namespace":"default","name":"my-web-5f796bf89","uid":"afb6f69c-f095-11e7-9de0-080027302ed5","...
Status: Running
IP: 172.17.0.2
Controlled By: ReplicaSet/my-web-5f796bf89
Containers:
my-web:
Container ID: docker://4a69f9aea721506c3f1fe60f1b7e7d171217182cf60f2955fdc7a41f81a1d90f
Image: 192.168.99.100:80/myweb
Image ID: docker-pullable://192.168.99.100:80/myweb@sha256:8e79b39e50dba9fc733260bede99f43655faab6ddfd6e0123b78f31757c9ded7
Port: 80/TCP
State: Waiting
Reason: ImagePullBackOff
Last State: Terminated
Reason: Error
Exit Code: 255
Started: Wed, 03 Jan 2018 22:52:15 +0800
Finished: Fri, 05 Jan 2018 08:30:53 +0800
Ready: False
Restart Count: 0
Environment:
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from default-token-4f4ds (ro)
Conditions:
Type Status
Initialized True
Ready False
PodScheduled True
Volumes:
default-token-4f4ds:
Type: Secret (a volume populated by a Secret)
SecretName: default-token-4f4ds
Optional: false
QoS Class: BestEffort
Node-Selectors:
Tolerations:
Events:
Type Reason Age From Message

Normal Scheduled 1d default-scheduler Successfully assigned my-web-5f796bf89-c495j to minikube
Normal SuccessfulMountVolume 1d kubelet, minikube MountVolume.SetUp succeeded for volume "default-token-4f4ds"
Normal Pulling 1d kubelet, minikube pulling image "192.168.99.100:80/myweb"
Normal Pulled 1d kubelet, minikube Successfully pulled image "192.168.99.100:80/myweb"
Normal Created 1d kubelet, minikube Created container
Normal Started 1d kubelet, minikube Started container
Normal SandboxChanged 17m kubelet, minikube Pod sandbox changed, it will be killed and re-created.
Normal SuccessfulMountVolume 17m kubelet, minikube MountVolume.SetUp succeeded for volume "default-token-4f4ds"
Normal Pulling 16m (x3 over 17m) kubelet, minikube pulling image "192.168.99.100:80/myweb"
Warning Failed 16m (x3 over 17m) kubelet, minikube Failed to pull image "192.168.99.100:80/myweb": rpc error: code = Unknown desc = Error response from daemon: Get http://192.168.99.100:80/v2/: dial tcp 192.168.99.100:80: getsockopt: connection refused
Warning BackOff 15m (x5 over 16m) kubelet, minikube Back-off restarting failed container
Normal BackOff 7m (x25 over 17m) kubelet, minikube Back-off pulling image "192.168.99.100:80/myweb"
Warning FailedSync 2m (x71 over 17m) kubelet, minikube Error syncing pod
bryanleekw@nb1:~/Projects/kubernetes-101/Kubernetes$

=================================================================
However, when I issued docker images command, that image exists there.

bryanleekw@nb1:~/Projects/kubernetes-101/Kubernetes$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
bryanmunich/webnew latest 72a89934aba4 15 hours ago 95.8MB
192.168.99.100:80/myweb latest 3f55de602b18 36 hours ago 177MB
redis latest 1e70071f4af4 3 weeks ago 107MB
gcr.io/google_containers/kubernetes-dashboard-amd64 v1.8.0 55dbc28356f2 5 weeks ago 119MB
gcr.io/k8s-minikube/storage-provisioner v1.8.0 4689081edb10 8 weeks ago 80.8MB
gcr.io/k8s-minikube/storage-provisioner v1.8.1 4689081edb10 8 weeks ago 80.8MB
gcr.io/google_containers/k8s-dns-sidecar-amd64 1.14.5 fed89e8b4248 3 months ago 41.8MB
gcr.io/google_containers/k8s-dns-kube-dns-amd64 1.14.5 512cd7425a73 3 months ago 49.4MB
gcr.io/google_containers/k8s-dns-dnsmasq-nanny-amd64 1.14.5 459944ce8cc4 3 months ago 41.4MB
gcr.io/google_containers/kubernetes-dashboard-amd64 v1.6.3 691a82db1ecd 5 months ago 139MB
gcr.io/google-containers/kube-addon-manager v6.4-beta.2 0a951668696f 6 months ago 79.2MB
gcr.io/google_containers/pause-amd64 3.0 99e59f495ffa 20 months ago 747kB

https://github.com/janakiramm/kubernetes-101/blob/master/Docker/app.py#L5

Shouldn't this be REDIS_SERVICE_HOST instead of REDIS_HOST

The images was created, when I have submitted docker-compose with image built.
However, when I try to curl localhost:5000, and it shows following error
curl: (7) Failed to connect to localhost port 5000: Connection refused

I tried to find out why with using iptables -t nat -L -n, it should be correct to open the port. Do you guys have any ideas about why? thanks

Chain PREROUTING (policy ACCEPT)
target prot opt source destination
DOCKER all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type LOCAL

Chain INPUT (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination
DOCKER all -- 0.0.0.0/0 !127.0.0.0/8 ADDRTYPE match dst-type LOCAL

Chain POSTROUTING (policy ACCEPT)
target prot opt source destination
MASQUERADE all -- 172.17.0.0/16 0.0.0.0/0
MASQUERADE all -- 172.18.0.0/16 0.0.0.0/0
MASQUERADE tcp -- 172.17.0.3 172.17.0.3 tcp dpt:5000

Chain DOCKER (2 references)
target prot opt source destination
RETURN all -- 0.0.0.0/0 0.0.0.0/0
RETURN all -- 0.0.0.0/0 0.0.0.0/0
DNAT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:3000 to:172.17.0.3:5000