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Similar to Kube journey 2017-04-19
Kube journey 2017-04-19
- 1. Advanced Orchestration with IBMBluemix Container Service Chris Rosen (crosen@us.ibm.com) Doug Davis (dug@us.ibm.com) If you want to follow along with gitlab demo: https://github.com/IBM/kubernetes-container-service-gitlab-sample
- 2. Agenda • IBM BluemixContainer Service • What is Kubernetes? • Developer Journey – Deploying Gitlab into IBM's Kubernetes platform • Services
- 3. Everyone’s container journeystarts with one container…. IBM Bluemix Container Service IBM Bluemix Container Service | IBM Confidential | ©2017 IBM Corporation
- 4. At first thegrowth is easy to handle…. IBM Bluemix Container Service IBM Bluemix Container Service | IBM Confidential | ©2017 IBM Corporation
- 5. But soon itis overwhelming… chaos reins IBM Bluemix Container Service IBM Bluemix Container Service | IBM Confidential | ©2017 IBM Corporation
- 6. Regain control withKubernetes IBM Bluemix Container Service IBM Bluemix Container Service | IBM Confidential | ©2017 IBM Corporation
- 7. Beta available now. CombiningDocker and Kubernetes to deliver powerful tools, an intuitive user experience, and built-in security and isolation to enable rapid delivery of applications - all while leveraging IBM Cloud Services including cognitive capabilities from Watson. www.ibm.com/cloud-computing/bluemix/containers IBM Bluemix Container Service IBM Bluemix Container Service | IBM Confidential | ©2017 IBM Corporation
- 8. Agenda • IBM BluemixContainer Service • What is Kubernetes? • Developer Journey – Deploying Gitlab into IBM's Kubernetes platform • Services
- 9. What is Kubernetes? •Building blocks of a platform to host Containers • Open / Extensible System • Replacements are encouraged • APIs between components are not just for internal use • Can add new Controllers w/o core API changes • Auth / Storage / Network / etc… plugins • Third Party Resources • Many attempts to make local deployment easy • Designed to be hosted in the Cloud 9 K8s NodeNode K8s Control Plane App Client K8s Client LB Kubelet KubeProxy API Server Kubelet KubeProxy ...Ctrs Sch etcd
- 10. Kubernetes - ManagingApplications • While there is some "porcelain": $ kubectl run --image=myapp $ kubectl scale --replicas=5 rs/myapp • More common method is yaml/json: $ kubectl create -f myapp.yaml • Native scripting is possible, but many use 3rd party tooling - eg: Ansible, Helm • Asynchronous Programming Model • A RESTful Database with a set of Controllers 10 apiVersion: extensions/v1beta1 kind: ReplicaSet metadata: name: myapp spec: replicas: 1 selector: matchLabels: name: web template: metadata: labels: name: web spec: containers: - name: myappWeb image: myapp
- 11. Kubernetes - SpecialSauce • Any type of application or code • Pod: a collection of co-located containers • Label Selectors • App is more than just a Load Balancer + a scaled Pod • The most customizable of the three (CF, Docker, K8s) • More knobs than you can ever imagine - and more coming every day • Supports limited multi-tenancy • Service Accounts linked with Namespaces • By default, no network isolation though • Backed by Google 11 apiVersion: ... kind: ReplicaSet metadata: name: myapp spec: replicas: 1 selector: matchLabels: name: web template: metadata: labels: name: web spec: containers: - name: myappWeb image: myapp
- 12. Kubernetes - ResourceModel • Component Status • Config Maps / Secrets • Daemon Sets • Deployments • Endpoints • Horizontal Pod Autoscaler • Ingress • Jobs • Namespaces • Stateful Sets • Pods • Persistent Volumes • Replica Sets • Services • Third Party Resources • ... • Nodes • Service Accounts • Orchestration • Single instance pods - one-offs • Scaled pods • Stateful Set • Daemon Sets • Rolling upgrades of Deployments • Many are alpha/beta - stability/longevity is ? 12
- 13. The Anatomy ofa Resource • API Version • Kind • Metadata • Spec • Status apiVersion: v1 kind: Pod metadata: annotations: foo: bar creationTimestamp: 2017-04-14T15:23:26Z labels: app: server name: ibm-keepalived-watcher-98wjm namespace: ibm-system spec: containers: - image: registry.ng.bluemix.net/myapp:39 imagePullPolicy: IfNotPresent name: myapp status: conditions: - lastTransitionTime: 2017-04-14T15:23:30Z status: "True" type: Initialized
- 14. Developer Journey Info •Main page: https://github.ibm.com/developer-journeys/cloud-infra-journey- gitlab-on-containers • Video: https://w3.ibm.com/developer/content-showcase/videos/run-gitlab-on- kubernetes/ • Overview: https://developer.ibm.com/code/journey/run-gitlab-kubernetes/ • Github: https://github.com/IBM/kubernetes-container-service-gitlab-sample • If you want to follow along
- 15. Container Journey • Gitlab– 3 Pods • Gitlab UI • Redis • Postgresql
- 16. Container Journey -Outline • Install the Bluemix client & Docker • Create a Kubernetes Cluster • Create a "namespace" in the Bluemix registry for our images • Build and push the Postgres and Gitlab images • Deploy Gitlab • Deploy Postgres, Redis and Gitlab
- 17.
- 18. Bluemix Value Add •Security • Vulnerability Scanning of Images • Isolated Networking & Storage • Private Registries • Customizable Clusters • Configurable Networking and Storage • Persistent Volumes using IBM Cloud Storage • Services • Watson, IoT, Analytics and Data Services • IP and application Load Balancing • Built-in log and metrics collection with IBM Bluemix log and metrics services • Native Kubernetes Experience • Seamless experience moving from local development to IBM Bluemix • 100% Kubernetes API and tools • Supports Kubernetes dashboard • Integrated Operational Tools • Use with IBM DevOps tools such as Delivery Pipeline • Supports popular add-ons including Prometheus, Weave, sysdig, fluentd and others
- 19. Bluemix Value Add:Services / Marketplace
- 20. Cloud Foundry ServiceBroker API • Simplifies how users/apps leverage services • Platform manages the service on behalf of the application • Freeing the application to focus on its business logic • Enables easier service integration • Find a service: $ bx service offerings • Create instance: $ bx service create cloudantNoSQLDB Lite myDB • Bind it to an app: $ bx service bind myApp myDB • Credentials are provided to the app • CF / Docker : environment variable ( VCAP_SERVICES ) • Kubernetes : secret
- 21. Cloud Foundry ServiceBroker API • Does not change interaction pattern between app and service • Does relieve the developer from having to deploy, configure and manage the service • Service instances can be shared across CF, Docker and Kubernetes • Future : Open Service Broker API • CF donated SB API to a new org called Open Service Broker API: http://openservicebrokerapi.org/ • IBM, Pivotal, RedHat, Google, Fujitsu, SAP • Expect to see it in: CF, Kubernetes, OpenShift • Changes: removal of CF-ism, schema-tizing parameters, additional auth mechanisms, etc...
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Editor's Notes
- #15 Info: https://www.eventbrite.com/e/docker-kubernetes-workshop-on-creating-a-cluster-and-deploying-an-app-tickets-33600955362?utm_term=eventurl_text Time: 6:30pm – 8:00pm Location: Galvanize, 119 Nueces Street, Austin, TX 78701