DevStack Docker Demo for Openstack HP Meetup

General setup

1. Download and install Virtualbox and Vagrant

   Tip: If you already have Vagrant installed, we suggest update to the current version available.

2. Download a copy of this repo in zip format or just clone it

   git clone https://github.com/kikitux/devstack_docker.git

3. Navigate into your newly created devstack_docker directory cd devstack_docker, then run vagrant up --provider virtualbox in the local directory where the Vagrantfile is in to download the DevStack Vagrant box and spin up the VM

   Tip: On first run, Vagrant will download the base box required.

Login to your OpenStack dashboard

1. Go to http://localhost:8888

2. Login to admin with username admin and password password or login to demo with username demo and password password

   

That's it, you have a fully functioning DevStack environment!

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Setup Sample Web Server

Now that you have your DevStack running, it's time to use it. Below are steps to setup a sample web server on your DevStack.

Step 1: Neutron configuration

1. Run vagrant ssh in the directory the Vagrantfile is in

2. Go to the devstack directory

   cd /opt/stack/devstack

3. Source the demo environment

   . openrc demo

   Tip: the command is . command argument, it starts with a dot

4. Setup security groups

   neutron security-group-rule-create --protocol icmp \
   --direction ingress --remote-ip-prefix 0.0.0.0/0 default
   

   neutron security-group-rule-create --protocol tcp \
   --port-range-min 22 --port-range-max 22 \
   --direction ingress --remote-ip-prefix 0.0.0.0/0 default
   

   neutron security-group-rule-create --protocol tcp \
   --port-range-min 80 --port-range-max 80 \
   --direction ingress --remote-ip-prefix 0.0.0.0/0 default
   

5. Provide internet access to the containers

   sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

Step 2: Start a Docker container

1. Source the admin environment

   . openrc admin

   Tip: the command is . command argument, it starts with a dot

2. Pull down the larsks/thttpd Docker image

   docker pull larsks/thttpd

3. Create a glance image

   docker save larsks/thttpd |
   glance image-create --name larsks/thttpd \
   --is-public true --container-format docker \
   --disk-format raw
   

4. Source the demo environment

   . openrc demo

   Tip: the command is . command argument, it starts with a dot

5. Boot the glance image

   nova boot --image larsks/thttpd --flavor m1.small test0

Step 3: Test that the webpage works

1. Grab the private ip by running the command nova list

nova list

+----...+-------+--------+...+-------------+--------------------+ | ID ...| Name | Status |...| Power State | Networks | +----...+-------+--------+...+-------------+--------------------+ | 0c3...| test0 | ACTIVE |...| Running | private=internal_ip| +----...+-------+--------+...+-------------+--------------------+

2. Run `curl http://internal_ip` to verify we have a working web server

<title>Your web server is working</title> [...] ```

3. In the browser go to http://localhost:888n where n is the IP of the server

   10.0.0.1 -> localhost 8881
   10.0.0.2 -> localhost 8882
   10.0.0.3 -> localhost 8883
   10.0.0.4 -> localhost 8884
   10.0.0.5 -> localhost 8885
   

   

4. Login to your OpenStack dashboard and view your newly created instance

   

   

   

Step 5: Rebuild the environment if required, openstack way

At somepoint if you require rebuild the environment, you can use devstack tools

1. Connect to the guest

   vagrant ssh

2. Deconfigure using unstack.sh

   cd /opt/devstack
   ./unstack.sh
   

3. Run stack.sh

   cd /opt/devstack
   ./stack.sh
   

   example run:

   This is your host ip: 10.0.2.15
   Horizon is now available at http://10.0.2.15/
   Keystone is serving at http://10.0.2.15:5000/
   The default users are: admin and demo
   The password: password
   real 7m29.726s
   

Step 6: Rebuild the environment if required, vagrant way

At somepoint if you require rebuild the environment, you can use vagrant

1. vagrant destroy

2. vagrant up --provider=virtualbox