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--- distributed_computing:orchestration [2019/08/24 13:50] – created phreazer
+++ distributed_computing:orchestration [2019/08/24 15:26] (current) – phreazer
@@ Line 1: / Line 1: @@
 ====== Orchestration ======
+===== Overview =====
   * Docker swarm / compose
-  * Kubernetes (k8s) / Minikube / Kubespray
+  * Kubernetes (k8s)
+  * OpenShift (productized k8s) / OKD
   * Nomad
   * Mesos
   * Rancher
-  * Openshift
+===== Docker swarm =====
+Setup: Simple setup, when Docker engine is installed
+Scaling: Scale up or down commands (no auto-scaling?)
+Blue green deployments:
+  * Swarm (nginx) https://www.goetas.com/blog/traps-on-the-way-of-blue-green-deployments/
+  * Swarm https://github.com/cecchisandrone/docker-swarm-blue-green
+  *  (nginx, consul): https://botleg.com/stories/blue-green-deployment-with-docker/
+  * Compose and Traefik https://coderbook.com/@marcus/how-to-do-zero-downtime-deployments-of-docker-containers/
+===== Kubernetes =====
+  * Installer:  kubespray, kops, kubeadm
+  * Mini-dev-dist:
+    * minikube (uses vms, needs hypervisor)
+    * microk8s (snap)
+===== Mesos =====
+Resource manager: Pool resources of data center, expose API for Frameworks with scheduling and job management logic.
+Architecture: Zookeeper dependency
+Frameworks on top: Aurora, Marathon
+===== Nomad =====
+General purpose: virtualized, containerized and standalone apps
+Simpler architecture: Client and server binaries
+Composing with Consul (service discovery) and Vault (secret management)
+Scale: > 10.000 nodes (stated by HashiCorp)
+Locations: multi-datacenter, multi-region
+===== OpenShift =====
+Requirements:
+RHEL, CoreOS, CentOS
+Enhanced security: No root containers, RBAC, integration with AD
+Additional components: Internal container registry, EFK logging stack, Prometheus Monitoring, Jenkins
+Templates: No Helm
+Ingress: Router instead of Ingress
+===== Rancher =====
+K8s distribution
+Simplification of Kubernetes deployment / management
+===== Related =====
+Service meshs
+  * Istio
+  * Consul (also Service discovery)