Update user guide (#1299)

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@ -92,150 +92,6 @@ INFO OpenShift file "foo-buildconfig.yaml" created
**Note**: If you are manually pushing the Openshift artifacts using ``oc create -f``, you need to ensure that you push the imagestream artifact before the buildconfig artifact, to workaround this Openshift issue: https://github.com/openshift/origin/issues/4518 .
## Kompose Up
Kompose supports a straightforward way to deploy your "composed" application to Kubernetes or OpenShift via `kompose up`.
### Kubernetes
```sh
$ kompose --file ./examples/docker-guestbook.yml up
We are going to create Kubernetes deployments and services for your Dockerized application.
If you need different kind of resources, use the 'kompose convert' and 'kubectl create -f' commands instead.
INFO Successfully created service: redis-master
INFO Successfully created service: redis-slave
INFO Successfully created service: frontend
INFO Successfully created deployment: redis-master
INFO Successfully created deployment: redis-slave
INFO Successfully created deployment: frontend
Your application has been deployed to Kubernetes. You can run 'kubectl get deployment,svc,pods' for details.
$ kubectl get deployment,svc,pods
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
deploy/frontend 1 1 1 1 4m
deploy/redis-master 1 1 1 1 4m
deploy/redis-slave 1 1 1 1 4m
NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE
svc/frontend 10.0.174.12 <none> 80/TCP 4m
svc/kubernetes 10.0.0.1 <none> 443/TCP 13d
svc/redis-master 10.0.202.43 <none> 6379/TCP 4m
svc/redis-slave 10.0.1.85 <none> 6379/TCP 4m
NAME READY STATUS RESTARTS AGE
po/frontend-2768218532-cs5t5 1/1 Running 0 4m
po/redis-master-1432129712-63jn8 1/1 Running 0 4m
po/redis-slave-2504961300-nve7b 1/1 Running 0 4m
```
Note:
- You must have a running Kubernetes cluster with a pre-configured kubectl context.
- If you kubernetes api server url is different than `https://127.0.0.1:6443`, you can use the `--server` flag to customize it.
- Only deployments and services are generated and deployed to Kubernetes. If you need different kind of resources, use the 'kompose convert' and 'kubectl create -f' commands instead.
### OpenShift
```sh
$ kompose --file ./examples/docker-guestbook.yml --provider openshift up
We are going to create OpenShift DeploymentConfigs and Services for your Dockerized application.
If you need different kind of resources, use the 'kompose convert' and 'oc create -f' commands instead.
INFO Successfully created service: redis-slave
INFO Successfully created service: frontend
INFO Successfully created service: redis-master
INFO Successfully created deployment: redis-slave
INFO Successfully created ImageStream: redis-slave
INFO Successfully created deployment: frontend
INFO Successfully created ImageStream: frontend
INFO Successfully created deployment: redis-master
INFO Successfully created ImageStream: redis-master
Your application has been deployed to OpenShift. You can run 'oc get dc,svc,is' for details.
$ oc get dc,svc,is
NAME REVISION DESIRED CURRENT TRIGGERED BY
dc/frontend 0 1 0 config,image(frontend:v4)
dc/redis-master 0 1 0 config,image(redis-master:e2e)
dc/redis-slave 0 1 0 config,image(redis-slave:v1)
NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE
svc/frontend 172.30.46.64 <none> 80/TCP 8s
svc/redis-master 172.30.144.56 <none> 6379/TCP 8s
svc/redis-slave 172.30.75.245 <none> 6379/TCP 8s
NAME DOCKER REPO TAGS UPDATED
is/frontend 172.30.12.200:5000/fff/frontend
is/redis-master 172.30.12.200:5000/fff/redis-master
is/redis-slave 172.30.12.200:5000/fff/redis-slave v1
```
Note:
- You must have a running OpenShift cluster with a pre-configured `oc` context (`oc login`)
## Kompose Down
Once you have deployed "composed" application to Kubernetes, `$ kompose down` will help you to take the application out by deleting its deployments and services. If you need to remove other resources, use the 'kubectl' command.
```sh
$ kompose --file docker-guestbook.yml down
INFO Successfully deleted service: redis-master
INFO Successfully deleted deployment: redis-master
INFO Successfully deleted service: redis-slave
INFO Successfully deleted deployment: redis-slave
INFO Successfully deleted service: frontend
INFO Successfully deleted deployment: frontend
```
Note:
- You must have a running Kubernetes cluster with a pre-configured kubectl context.
- If you kubernetes api server url is different than https://127.0.0.1:6443, you can use the --server flag to customize it.
## Build and Push Docker Images
Kompose supports both building and pushing Docker images. When using the `build` key within your Docker Compose file, your image will:
- Automatically be built with Docker using the `image` key specified within your file
- Be pushed to the correct Docker repository using local credentials (located at `.docker/config`)
If you do not want to push the image you have built, you and use the `--push-image=false` flag to disable it.
Using an [example Docker Compose file](https://raw.githubusercontent.com/kubernetes/kompose/master/examples/buildconfig/docker-compose.yml):
```yaml
version: "2"
services:
foo:
build: "./build"
image: docker.io/foo/bar
```
Using `kompose up` with a `build` key:
```sh
$ kompose up
INFO Build key detected. Attempting to build and push image 'docker.io/foo/bar'
INFO Building image 'docker.io/foo/bar' from directory 'build'
INFO Image 'docker.io/foo/bar' from directory 'build' built successfully
INFO Pushing image 'foo/bar:latest' to registry 'docker.io'
INFO Attempting authentication credentials 'https://index.docker.io/v1/
INFO Successfully pushed image 'foo/bar:latest' to registry 'docker.io'
INFO We are going to create Kubernetes Deployments, Services and PersistentVolumeClaims for your Dockerized application. If you need different kind of resources, use the 'kompose convert' and 'kubectl create -f' commands instead.
INFO Deploying application in "default" namespace
INFO Successfully created Service: foo
INFO Successfully created Deployment: foo
Your application has been deployed to Kubernetes. You can run 'kubectl get deployment,svc,pods,pvc' for details.
```
In order to disable the functionality, or choose to use BuildConfig generation (with OpenShift) `--build (local|build-config|none)` can be passed.
```sh
# Disable building/pushing Docker images
$ kompose up --build none
# Generate Build Config artifacts for OpenShift
$ kompose up --provider openshift --build build-config
```
## Alternative Conversions
The default `kompose` transformation will generate Kubernetes [Deployments](http://kubernetes.io/docs/user-guide/deployments/) and [Services](http://kubernetes.io/docs/user-guide/services/), in yaml format. You have alternative option to generate json with `-j`. Also, you can alternatively generate [Replication Controllers](http://kubernetes.io/docs/user-guide/replication-controller/) objects, [Daemon Sets](http://kubernetes.io/docs/admin/daemons/), or [Helm](https://github.com/helm/helm) charts.