Instack Docker Setup

The instack Docker setup provides an environment equivalent to that produced by running instack-virt-setup in a reuseable Docker container.

Running the instack-virt-setup Docker image

Pre-requisites.

 # Run these commands as root
 yum install docker-io qemu-kvm
 modprobe kvm
 modprobe openvswitch
 systemctl start docker

Pull the image from the docker registry.

 # Run these commands as root
 # Note that this is about an 8GB download as it contains a fully
 # installed undercloud with all the overcloud images already loaded into
 # glance.
 docker pull slagle/instack-virt

Create a directory on your docker host to mount into the container for storage. This directory should have at least 30GB free.
```
 # Run these commands as root
 mkdir -p /storage/docker/lib/instack-virt-environment
```
Start the container. The container must be started with --privileged so that libvirt has access to create networks. The host path created in the previous step is also mounted into the container at /var/lib/libvirt/images for the instack vm's to use for their disks.
```
 # Run these commands as root
 setenforce 0
 docker run \
     -it \
     --name instack-virt-environment \
     --privileged \
     --volume /storage/docker/lib/instack-virt-environment:/var/lib/libvirt/images \
     slagle/instack-virt
```

Open a new termainl and look up the IP address of the container

 # Run these commands as root
 docker inspect instack-virt-environment | grep IPAddress

ssh as stack to the container's IP address. The initial stack password is also stack.
Once ssh'd into the container, start the instack vm
```
 virsh start instack
```
The IP address of the instack vm will be 192.168.122.100. ssh as the stack user (initial password is stack) to the instack vm. It may take a minute or 2 for it to come up.
```
 ssh stack@192.168.122.100
```
Once ssh'd to the instack vm, you must wait for the run of os-collect-config to complete. It should complete in < 5 minutes. Use the following command to check for completion.
```
 sudo journalctl -u os-collect-config --full -f | grep "Completed phase migration"
```
Once os-collect-config has comleted, you can source the necessary files and verify the images are already loaded in glance. Note that you must source the 3 files below anytime you want to use the OpenStack clients. The paths are relative to /home/stack.
```
 source instack-undercloud/instack-sourcerc
 source tripleo-undercloud-passwords
 source stackrc
 glance image-list
```

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Instack Docker Setup

Running the instack-virt-setup Docker image

2.7 KiB

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