deploy kubernetes in XCI

This commit introduces kubespray into XCI.
k8s install currently assumes k8s install
and OpenStack install cannot coexist.
If XCI_INSTALLER is set to "kubespray" and
DEPLOY_SCENARIO is set to "k8-nosdn-nofeature"
the xci-deploy.sh would install kubernetes instead of OpenStack.
The version of kubernetes is beta release v1.9.0 currently
according to the master of kubespray
it only support the ubuntu now.
Opensuse and centos still need to develop and test.

This patch create the directory xci/installer/kubespray,
the related files of kubespray would be placed to it.
The xci/installer/$installer/playbooks/configure-localhost.yml was moved
to xci/playbooks/configure-localhost.yml as a common yaml file.

You can modify some parameters according your need
in xci/installer/kubespray/files/k8s-cluster.yml to deploy cluster.
When deploying kubernetes,
it would download the kubespray to releng-xci/.cache/repos/kubespray.
If your flavor is Ha, it will download haproxy_server and keepalived
to xci/playbook/roles, which setup haproxy service for kubernetes.

Change-Id: I24d521a735d7ee85fbe5af8c4def65f37586b843
Signed-off-by: wutianwei <wutianwei1@huawei.com>

1 files changed, 64 insertions, 0 deletions

diff --git a/xci/installer/kubespray/README b/xci/installer/kubespray/README
new file mode 100644
index 00000000..171091e8
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+The xci/installer/kubespray/files/k8s-cluster.yml is obtained from kubespray.
+You can change the parameters according to your needs.
+When  starting the deploy, it will be copied to the right directory and will be used by kubespray
+
+For example:
+  kube_network_plugin: calico
+  docker_storage_options: -s overlay2
+  kube_service_addresses: 10.233.0.0/18
+
+Requirements:
+  1. Performance of hosts
+      The performance settings are not required officially. I recommend the following:
+       - VM_CPU=6
+       - VM_DISK=80GB
+       - VM_MEMORY_SIZE=16GB
+
+  2. Distributions
+       - Ubuntu 16.04
+
+  3. Packages:
+       - Ansible v2.4 (or newer) and python-netaddr is installed on the machine that will run Ansible commands
+       - Jinja 2.9 (or newer) is required to run the Ansible Playbooks
+
+  4. Others:
+       - The target servers must have access to the Internet in order to pull docker images.
+       - The target servers are configured to allow IPv4 forwarding.
+       - Your ssh key must be copied to all the servers part of your inventory.
+       - The firewalls are not managed, you'll need to implement your own rules the way you used to. In order to avoid any issue during the deployment you should disable your firewall.
+
+Flavors:
+  1. aio: Single host which acts as the deployment host, master and node.
+  2. mini: One deployment host, 1 master host and 1 node host.
+  3. noha: One deployment host, 1 master host and 2 node hosts.
+  4. ha: One deployment host, 3 master hosts and 2 node hosts.
+
+Components Installed:
+  1. etcd
+  2. network plugins:(one of following, which you can choose. Default is calico)
+       - calico
+       - flannel
+       - contive
+       - weave
+  3. kubernetes
+  4. docker
+
+How to use:
+
+Clone the OPNFV Releng repository
+
+    git clone https://gerrit.opnfv.org/gerrit/releng-xci.git
+
+Change into the directory where the sandbox script is located
+
+    cd releng-xci/xci
+
+Set the variable to run kubespray
+
+    export XCI_INSTALLER=kubespray
+    export DEPLOY_SCENARIO=k8-nosdn-nofeature
+    export XCI_FLAVOR=mini
+
+Execute sandbox script
+
+    ./xci-deploy.sh