Gitkube - Build and deploy docker images to Kubernetes using git push

Gitkube architecture and demo

Transcript

2. Hasura We’re making it fast for developers to build their backends. 1. A fast, lightweight GraphQL engine on postgres 2. Easily deploy code on kubernetes with a git push
3. Shahidh K Muhammed @shahidh_k
4. Deploy docker based apps to Kubernetes
5. Sample app app ├── Dockerfile ├── k8s.yaml └── src ├── app.py ├── requirements.txt └── server.py
6. Typical dev/deployment workflow 1. Modify code 2. docker build -t “myapp:version” . 3. docker push “myapp:version” 4. kubectl --context=dev edit deployment myapp 5. Repeat
7. Typical dev/deployment workflow
8. Workflow with gitkube 1. Modify code 2. git commit -am “changes” 3. git push dev master 4. Repeat
9. git push dev master
10. Setup for “git push dev master” 1. Install gitkube on your kubernetes cluster 2. Create a remote called “dev” which is configured to build a docker image and update a deployment.
11. The dev remote apiVersion: gitkube.sh/v1alpha1 kind: Remote metadata: name: dev spec: authorizedKeys: - "ssh-rsa your-ssh-public-key" deployments: - name: app containers: - name: app path: app dockerfile: app/Dockerfile
12. The dev remote apiVersion: gitkube.sh/v1alpha1 kind: Remote metadata: name: dev spec: authorizedKeys: - "ssh-rsa your-ssh-public-key" deployments: - name: app containers: - name: app path: app dockerfile: app/Dockerfile
13. The dev remote apiVersion: gitkube.sh/v1alpha1 kind: Remote metadata: name: dev spec: authorizedKeys: - "ssh-rsa your-ssh-public-key" deployments: - name: app containers: - name: app path: app dockerfile: app/Dockerfile
14. The dev remote apiVersion: gitkube.sh/v1alpha1 kind: Remote metadata: name: dev spec: authorizedKeys: - "ssh-rsa your-ssh-public-key" deployments: - name: app containers: - name: app path: app dockerfile: app/Dockerfile app ├── Dockerfile ├── k8s.yaml └── src ├── app.py ├── requirements.txt └── server.py
15. The dev remote apiVersion: gitkube.sh/v1alpha1 kind: Remote metadata: name: dev spec: authorizedKeys: - "ssh-rsa your-ssh-public-key" deployments: - name: app containers: - name: app path: app dockerfile: app/Dockerfile
16. Architecture
17. Features 1. Update multiple deployments with a single remote 2. Configure multiple remotes with different permissions 3. Push images to a registry (required on multi node clusters) 4. Build and deploy based on webhook events (coming soon!) 5. Easy customisation of hooks - plugin your own steps (coming soon!)
18. gitkube vs .. 1. Git based tooling. Every developer is familiar with git. 2. Quick iteration time when used on dev/staging clusters 3. Simple permission system based on public keys 4. Very small surface area. Can easily be replaced with more sophisticated CI/CD pipelines when moving to production.
19. Demo • Gitkube • GitOps at Hasura: ◦ Deploying applications ◦ Changing subdomain ◦ Add a new domain ◦ Database migrations
20. Shahidh K Muhammed @shahidh_k Thanks for listening! Questions?
21. How do we build such a system?
22. Your computer (?) deployment git push kube master
23. Your computer gitkubed Exposed externally SSH-key based auth deployment git push kube master
24. Your computer gitkubed (deployment,svc) Exposed externally SSH-key based auth deployment git push kube master Remote (custom resource) Which deployments to update? Which authorized-keys? kubectl ... remote.yaml
25. Your computer gitkubed (deployment,svc) Exposed externally SSH-key based auth deployment git push kube master Remote (custom resource) Which deployments to update? Which authorized-keys? gitkube-controller (operator) Listen to changes, and transmit kubectl ... remote.yaml