c12s-kubespray/README.md
2016-07-12 17:20:58 +02:00

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vagrant-k8s
===========
Scripts to create libvirt lab with vagrant and prepare some stuff for `k8s` deployment with `kargo`.
Requirements
------------
* `libvirt`
* `vagrant`
* `vagrant-libvirt` plugin (`vagrant plugin install vagrant-libvirt`)
* `$USER` should be able to connect to libvirt (test with `virsh list --all`)
Vargant lab preparation
-----------------------
* Change default IP pool for vagrant networks if you want:
```bash
export VAGRANT_POOL="10.100.0.0/16"
```
* Clone this repo
```bash
git clone https://github.com/adidenko/vagrant-k8s
cd vagrant-k8s
```
* Prepare the virtual lab:
```bash
vagrant up
```
Deployment on a lab
-------------------
* Login to master node and sudo to root:
```bash
vagrant ssh $USER-k8s-00
sudo su -
```
* Clone this repo
```bash
git clone https://github.com/adidenko/vagrant-k8s ~/mcp
```
* Install required software and pull needed repos (modify script if you're not
running it on Vagrant lab, you'll need to create `nodes` list manually and
clone `microservices` and `microservices-repos` repositories, see ccp-pull.sh
for details)
```bash
cd ~/mcp
./bootstrap-master.sh
```
* Check nodes list and make sure you have SSH access to them
```bash
cd ~/mcp
cat nodes
ansible all -m ping -i nodes_to_inv.py
```
* Deploy k8s using kargo playbooks
```bash
cd ~/mcp
./deploy-k8s.kargo.sh
```
* Deploy OpenStack CCP:
```bash
cd ~/mcp
# Build CCP images
ansible-playbook -i nodes_to_inv.py playbooks/ccp-build.yaml
# Deploy CCP
ansible-playbook -i nodes_to_inv.py playbooks/ccp-deploy.yaml
```
Working with kubernetes
-----------------------
* Login to one of your kube-master nodes (see `/root/kargo/inventory/inventory.cfg`
on master node) and run:
```bash
# List images in registry
curl -s 127.0.0.1:31500/v2/_catalog | python -mjson.tool
# Check CCP jobs status
kubectl --namespace=openstack get jobs
# Check CCP pods
kubectl --namespace=openstack get pods -o wide
```
* Troubleshooting
```bash
# Get logs from pod
kubectl --namespace=openstack logs $POD_NAME
# Exec command from pod
kubectl --namespace=openstack exec $POD_NAME -- cat /etc/resolv.conf
kubectl --namespace=openstack exec $POD_NAME -- curl http://etcd-client:2379/health
# Run a container
docker run -t -i 127.0.0.1:31500/mcp/neutron-dhcp-agent /bin/bash
```
* Network checker
```bash
cd ~/mcp
./deploy-netchecker.sh
# or in openstack namespace
./deploy-netchecker.sh openstack
```
* CCP
```bash
# Run a bash in one of containers
docker run -t -i 127.0.0.1:31500/mcp/nova-base /bin/bash
# Inside container export credentials
export OS_USERNAME=admin
export OS_PASSWORD=password
export OS_TENANT_NAME=admin
export OS_REGION_NAME=RegionOne
export OS_AUTH_URL=http://keystone:35357
# Run CLI commands
openstack service list
neutron agent-list
```