LAMP in Containers

An exploration of converting a LAMP app to a multi tier container app.

Transcript

1. ‹#› @tpryan Terry Ryan Developer Advocate LAMP In Containers
2. ‹#› @tpryan Who are you?
3. ‹#› @tpryan 01 Introduction What Am I Trying to Do?
4. ‹#› @tpryan I have an app…
5. ‹#› @tpryan
6. ‹#› @tpryan
7. ‹#› @tpryan Demo: LAMP Version
8. ‹#› @tpryan 02 LAMP Version
9. ‹#› @tpryan DB API UI LAMP
10. ‹#› @tpryan Process • Create a server • Linux • Apache • PHP • MySQL • Get starting schema and content on it • Initialize system
11. ‹#› @tpryan Create a Server # Request Machine gcloud compute instances create $(MYSQL_HOSTNAME) --zone $(ZONE) \ --machine-type "f1-micro" --image-family="debian-8" \ --image-project="debian-cloud" \ --tags "http-server","https-server" # Install Apache + PHP apt-get update -y apt-get install apache2 php5 curl php5-curl -y # Install MySQL and PHP libratries DEBIAN_FRONTEND=noninteractive \ apt-get -y install mysql-server mysql-client php5-mysqlnd php-pear -y /etc/init.d/apache2 restart
12. ‹#› @tpryan Create a Server # Security routines DELETE FROM mysql.user WHERE User='root' AND Host = '$(MYSQL_HOSTNAME)'; SET PASSWORD FOR 'root'@'localhost' = '$(MYSQL_ROOTHASH)'; SET PASSWORD FOR 'root'@'127.0.0.1' = '$(MYSQL_ROOTHASH)'; SET PASSWORD FOR 'root'@'::1' = '$(MYSQL_ROOTHASH)'; FLUSH PRIVILEGES; mysql_secure_installation $(MYSQL_ROOTHASH) = SELECT PASSWORD('SuperSecureIPromise')
13. ‹#› @tpryan Details Time to build ~ 2:30 Time to update ~ :10 Lines of config code 63 Monthly Cost of Solution ~$4.28
14. ‹#› @tpryan 02 3 Tier Version
15. ‹#› @tpryan DB API UI
16. ‹#› @tpryan DB UI API
17. ‹#› @tpryan 03 Containerized
18. ‹#› @tpryan 03.1 Docker
19. ‹#› @tpryan Dockerfiles FROM mysql/mysql-server:5.6 ADD sql/load.sql /docker-entrypoint-initdb.d/load.sql EXPOSE 3306 DB FROM httpd:2.4 COPY ui /usr/local/apache2/htdocs/ui COPY static /usr/local/apache2/htdocs/static UI FROM php:7.0-apache RUN apt-get update && apt-get install -y php5-mysqlnd RUN docker-php-ext-install mysqli RUN a2enmod rewrite && a2enmod headers && service apache2 restart COPY app/ /var/www/html/ API
20. ‹#› @tpryan docker run --name=3tier_frontend -d -p 8080:80 3tier_frontend docker run --name=3tier_api --link 3tier_db:mysql -d -p 80:80 3tier_api Startup scripts docker run --name=3tier_db -d -p 3306:3306 3tier_db DB UI API
21. ‹#› @tpryan Code Changes Change frontend PUT requests to POST to deal with CORS issues. DB UI API
22. ‹#› @tpryan Original UI var url = this.protocol + this.host + this.uri_location_list; var type = "POST"; if (location.id != 0){ url += location.id; type = "PUT"; } $.ajax({ url: url, type: type, data: location, success: successHandler, error: errorHandler }); UI
23. ‹#› @tpryan But secretly the API didn’t really care. if ($post_vars['id'] == 0){ // INSERT SQL.. } else { // UPDATE SQL... } API
24. ‹#› @tpryan So now this var url = this.protocol + this.host + this.uri_location_list; var type = "POST"; if (location.id != 0){ url += location.id; type = "PUT"; } $.ajax({ url: url, type: type, data: location, success: successHandler, error: errorHandler }); UI var url = this.protocol + this.host + this.uri_location_list; var type = "POST"; if (location.id != 0){ url += location.id; type = "PUT"; } $.ajax({ url: url, type: type, data: location, success: successHandler, error: errorHandler });
25. ‹#› @tpryan Details Time to build ~ :08 (+2:30) Time to update ~ :21 + (:10) Lines of config code 95 Monthly Cost of Solution* ~$4.28
26. ‹#› @tpryan 03.2 Kubernetes
27. ‹#› @tpryan # DB FROM mysql/mysql-server:5.6 ADD sql/load.sql /docker-entrypoint-initdb.d/load.sql EXPOSE 3306
28. ‹#› @tpryan # FRONTEND AND SERVICES FROM nginx-php-fpm COPY nginx.conf /etc/nginx/nginx.conf ADD www /var/www/ # API FROM php:7.0-apache RUN apt-get update && apt-get install -y php5-mysqlnd RUN docker-php-ext-install mysqli RUN a2enmod rewrite && a2enmod headers && service apache2 restart COPY app/ /var/www/html/
29. ‹#› @tpryan # UI FROM httpd:2.4 COPY ui /usr/local/apache2/htdocs/ui COPY static /usr/local/apache2/htdocs/static
30. ‹#› @tpryan Docker
31. ‹#› @tpryan Docker
32. ‹#› @tpryan Docker
33. ‹#› @tpryan Docker Docker
34. ‹#› @tpryan Docker Docker
35. ‹#› @tpryan Docker Docker
36. ‹#› @tpryan Docker
37. ‹#› @tpryan That’s a lot to manage.
38. ‹#› @tpryan 4 3 1
39. ‹#› @tpryan Kubernetes • Container Orchestration System • Open Source • Started by Google • Contributed to by others
40. ‹#› @tpryan Requirements • Kubernetes Cluster • Images hosted in repository • Multiple running containers for • API • UI • Single instance of • DB • Disk for • DB • Public IP and load balancers for • API • UI
41. ‹#› @tpryan Create a Cluster # Request Cluster gcloud container clusters create $(CLUSTER) --num-nodes 2 \ --disk-size=200 —machine-type="g1-small"
42. ‹#› @tpryan Build and host images # Build API image docker build -t gcr.io/projectname/locations-api "containers/api/." # Push API to repository gcloud docker push gcr.io/projectname/locations-api # Build UI image docker build -t gcr.io/projectname/locations-ui "containers/ui/." # Push UI to repository gcloud docker push gcr.io/projectname/locations-ui # Build DB image docker build -t gcr.io/projectname/locations-db "containers/db/." # Push API to repository gcloud docker push gcr.io/projectname/locations-db
43. ‹#› @tpryan Running containers Pod Pod Pod Pod Replica Set Deployment
44. ‹#› @tpryan Deployment apiVersion: extensions/v1beta1 kind: Deployment metadata: name: frontend-deployment spec: replicas: 4 strategy: type: RollingUpdate template: metadata: labels: layer: ui spec: containers: - name: "frontend" image: "gcr.io/lamp-in-containers/locations-frontend" ports: - name: "http" containerPort: 80 protocol: TCP Pod Replica Set Deployment
45. ‹#› @tpryan Create a Deployment # Create deployment kubectl create -f deployment.yaml
46. ‹#› @tpryan Containers as Pets Pod Stateful Set Persistent Volume Claim
47. ‹#› @tpryan Stateful Set apiVersion: apps/v1beta1 kind: StatefulSet metadata: name: db-set spec: serviceName: "mysql" replicas: 1 template: metadata: labels: layer: db spec: terminationGracePeriodSeconds: 0 containers: - name: db image: "gcr.io/lamp-in-containers/locations-db" ports: - containerPort: 3306 name: mysql volumeMounts: - name: mysql-pvc mountPath: /var/lib/mysql volumeClaimTemplates: - metadata: name: mysql-pvc annotations: volume.alpha.kubernetes.io/storage-class: anything spec: accessModes: [ "ReadWriteOnce" ] resources: requests: storage: 1Gi Pod Persistent Volume Claim Stateful Set
48. ‹#› @tpryan Exposing containers Pod Pod Pod Pod Service
49. ‹#› @tpryan Deployment apiVersion: extensions/v1beta1 kind: Deployment metadata: name: frontend-deployment spec: replicas: 4 strategy: type: RollingUpdate template: metadata: labels: layer: ui spec: containers: - name: "frontend" image: "gcr.io/lamp-in-containers/locations-frontend" ports: - name: "http" containerPort: 80 protocol: TCP Pod Label
50. ‹#› @tpryan Service apiVersion: v1 kind: Service metadata: labels: name: frontend name: frontend spec: type: LoadBalancer ports: - port: 80 targetPort: 80 protocol: TCP selector: layer: ui Selector
51. ‹#› @tpryan ui Pod ui deployment ui Pod ui Pod ui Pod ui service (public) api Pod api deployment api service (public) api Pod api Pod db statefulset db service (private) db Pod
52. ‹#› @tpryan Demo: Kubernetes Version
53. ‹#› @tpryan Details Time to build ~ 4:30 Time to update ~ :24 Lines of config code 266 Monthly Cost of Solution* ~$43.63
54. ‹#› @tpryan Is this the right way?
55. ‹#› @tpryan 04 Cloud Version
56. ‹#› @tpryan DB API UI Managed SQL File Storage Leave on Kubernetes Switch to App Engine flexible
57. ‹#› @tpryan Details Time to build ~ 8:00 Time to update ~ 5:00 Lines of config code 66 Monthly Cost of Solution ~$47.83
58. ‹#› @tpryan 05 Conclusions Bring it home
59. ‹#› @tpryan All in one boxes are a liability
60. ‹#› @tpryan LAMP
 = L+A+M+P
61. ‹#› @tpryan Technology Shift
62. ‹#› @tpryan Thank You terrenceryan.com @tpryan This preso: http://bit.ly/tpryan-chaos