Configure_simplestreams_for_a_private_cloud.md

@@ -6,11 +6,11 @@ When Juju bootstraps a cloud, it needs two critical pieces of information:
 
 **The URL from which to download the correct version of a tools tarball.**
 
-We can simply think the essential information above is stored in two json files.
+The essential information above is actually stored in two json files in simplestreams.
 
 To learn more details ,you can refer [here](https://jujucharms.com/docs/1.25/howto-privatecloud).
 
-Before generating  the json files,we need to do some preparation:
+Before configuring the simplestreams, we need to do some preparations:
 
 
 ## Upload Ubuntu 14.04LTS(Trusty) and Ubuntu 16.04LTS(Xenial)  image to Openstack 
@@ -34,10 +34,11 @@ Before generating  the json files,we need to do some preparation:
    ```
 
 
-## Generate image json file:
+## Generate image json file for simplestreams:
 
    ```shell
-   sudo juju metadata generate-image -a amd64 -i 843bef24-8c70-40e1-a380-972717c9e4b3 -r RegionOne -s xenial -d /var/www/html/stack -u http://172.16.1.3:5000/v2.0 -e openstack
+sudo mkdire /var/www/html/stack
+sudo juju metadata generate-image -a amd64 -i 843bef24-8c70-40e1-a380-972717c9e4b3 -r RegionOne -s xenial -d /var/www/html/stack -u http://172.16.1.3:5000/v2.0 -e openstack
    ```
 
    Regarding the command-line flags used:
@@ -49,7 +50,7 @@ Before generating  the json files,we need to do some preparation:
    * -a amd64: specifies the CPU architecture.
    * -d /var/www/html/stack: specifies the base directory where the metadata will be written to. For images, the path will be /opt/stack/images/streams/v1..
 
-## Generate tools json file:
+## Generate tools json file for simplestreams:
 
    ```shell
    juju metadata generate-tools -d /var/www/html/stack/ --stream released
@@ -57,14 +58,8 @@ Before generating  the json files,we need to do some preparation:
 
    Tips:
 
-   `/var/www/html` is the Apache server default directory
+   `/var/www/html` is the default directory of Apache server 
 
-## Use the validation command to ensure iamge and tools are available for juju to use:
-
-   ```shell
-   juju metadata validate-images
-   juju metadata validate-tools
-   ```
 
 ## Download tool files:
 
@@ -83,9 +78,23 @@ Before generating  the json files,we need to do some preparation:
    sudo chmod -R 777 ./*
    ```
 
+## Use the validation commands to ensure image and tools are available for juju to use:
+
+   ```shell
+   juju metadata validate-images
+   juju metadata validate-tools
+   ```
+
 ## Bootstrap Juju
 
    ```shell
    juju switch openstack
    juju bootstrap
-   ```
\ No newline at end of file
+   ```
+
+And then you can try to deploy services by using ```juju deploy```, for example:
+
+```
+juju deploy juju-gui
+```
+