und was kann es? was ist das eigentlich?
TRANSCRIPT
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Was ist das eigentlich?Und was kann es?Sebastian DehnSolution Architect Partner [email protected]
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Wer bin ich?
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Worüber reden wir heute?
3
Die Idee hinter OpenShiftWieso, weshalb warum…?
Lasst uns über Technik reden!Das wichtigste in Kürze
Proof it! Ein kurzer Einblick in die reale OpenShift Welt
Q&AIch beantworte eure Fragen. Habt ihr welche?
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Wer kennt es nicht?
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Bill - VP IT
Chris - VP AppDev
Steve - CEO
Parts Unlimited
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Steve - die Kosten minimieren/Ressourcen effizient nutzen
Bill - Modernisierung Infrastruktur & Standardisierung der IT Prozesse
Chris - Modern AppDev & Innovative Technologien
Der Fokus
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Automated operations
A consistent container application platform
Multi-tenant Networktraffic control
Over-the-airupdates
Bare metal, VMware vSphere, Red Hat Virtualization, Red Hat OpenStack Platform, Amazon Web Services, Microsoft Azure, Google, IBM Cloud
Pluggable architecture
Monitoring& chargeback
Secure by default
From your data center, to the cloud, to the edge
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CONFIDENTIAL Designator
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Zeit für Praxis!
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CONFIDENTIAL Designator
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Die TechnikWas sich unter der Haube versteckt
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Empowering developers to innovate
Zeit für Innovationen!
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OpenShift enables developer productivity
SPRING & JAVA™ EE MICROSERVICES FUNCTIONS
LANGUAGES DATABASES APPLICATION SERVICES
LINUX WINDOWS*
* coming soon
CODE
BUILD TEST DEPLOY
MONITORREVIEW
Self-service provisioning
Automatedbuild & deploy
CI/CDpipelines
Consistentenvironments
Configuration management
App logs & metrics
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BUILD AND DEPLOY CONTAINER IMAGES
DEPLOY YOURSOURCE CODE
DEPLOY YOURCONTAINER IMAGE
DEPLOY YOURAPP BINARY
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DEPLOY SOURCE CODE WITH SOURCE-TO-IMAGE (S2I)
GitRepositoryBUILD APP
(OpenShift)Developer
code
Source-to-Image(S2I)
Builder Image
ImageRegistry
BUILD IMAGE(OpenShift)
DEPLOY(OpenShift)
deployApplication Container
OpenShift DoesUser/Tool Does
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DEPLOY APP BINARY WITH SOURCE-TO-IMAGE (S2I)Application
Binary(e.g. WAR)BUILD APP
(Build Infra) Existing Build Process
build
Source-to-Image(S2I)
Builder Image
ImageRegistry
BUILD IMAGE(OpenShift)
DEPLOY(OpenShift)
deployApplication Container
OpenShift DoesUser/Tool Does
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DEPLOY(Openshift)
DEPLOY DOCKER IMAGE
build
Application Container
deploy
Application Image
ImageRegistry
BUILD IMAGE (Build Infra) Existing Image
Build Process
PUSH(Build Infra)
OpenShift DoesUser/Tool Does
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BuildConfigSource
Dockerfile
Jenkinsfile
Builder Pod Base
Image
App Image Registry
Registry
Push
Pull
DeploymentConfig/Deployment
Deployer Pod
Node
Pull
App Image
1
2
3
4 4
3
5
66
7
Build and Deploy Process
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OpenShift 4 Architecture
Und so sieht die
Architektur der Plattform
aus!
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OPENSHIFT CONTAINER PLATFORM | Architectural Overview
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STORAGENETWORKCOMPUTE
your choice of infrastructure
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OPENSHIFT CONTAINER PLATFORM | Architectural Overview
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WORKER
STORAGENETWORKCOMPUTE
WORKER
workers run workloads
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OPENSHIFT CONTAINER PLATFORM | Architectural Overview
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MASTER
STORAGENETWORKCOMPUTE
masters are the control plane
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OPENSHIFT CONTAINER PLATFORM | Architectural Overview
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everything runs in pods
CONTAINERIMAGE
POD
CONTAINER
10.140.4.44
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OPENSHIFT CONTAINER PLATFORM | Architectural Overview
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MASTER
STORAGE
etcd
NETWORKCOMPUTE
state of everything
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OPENSHIFT CONTAINER PLATFORM | Architectural Overview
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MASTER
STORAGE
Kubernetesservices
etcd
NETWORKCOMPUTE
core kubernetes components
KubernetesAPI server
Scheduler
Cluster Management
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OPENSHIFT CONTAINER PLATFORM | Architectural Overview
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MASTER
OpenShiftservices
STORAGE
Kubernetesservices
etcd
NETWORKCOMPUTE
core OpenShift components
OpenShiftAPI server
Operator Lifecycle Management
Web Console
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OPENSHIFT CONTAINER PLATFORM | Architectural Overview
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MASTER
OpenShift Services
STORAGE
Kubernetesservices
Infrastructureservices
etcd
NETWORKCOMPUTE
internal and support infrastructure services
Monitoring | Logging | Tuned | SDN | DNS | Kubelet
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OPENSHIFT CONTAINER PLATFORM | Architectural Overview
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WORKERMASTER
OpenShift Services
STORAGE
Kubernetesservices
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Infrastructureservices
etcd
NETWORKCOMPUTE
WORKER
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
run on all hosts
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OPENSHIFT CONTAINER PLATFORM | Architectural Overview
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WORKERMASTER
OpenShift Services
STORAGE
Kubernetesservices
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Infrastructureservices
etcd
NETWORKCOMPUTE
Registry
WORKER
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Registry
integrated image registry
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OPENSHIFT CONTAINER PLATFORM | Architectural Overview
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WORKERMASTER
OpenShift Services
STORAGE
Kubernetesservices
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Infrastructureservices
etcd
NETWORKCOMPUTE
Registry
Prometheus | Grafana Alertmanager
WORKER
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Registry
Prometheus | Grafana Alertmanager
cluster monitoring
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OPENSHIFT CONTAINER PLATFORM | Architectural Overview
29
WORKERMASTER
OpenShift Services
STORAGE
Kubernetesservices
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Infrastructureservices
etcd
NETWORKCOMPUTE
Registry
Prometheus | Grafana Alertmanager
Kibana | Elasticsearch
WORKER
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Registry
Prometheus | Grafana Alertmanager
Kibana | Elasticsearch
log aggregation
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OPENSHIFT CONTAINER PLATFORM | Architectural Overview
30
WORKERMASTER
OpenShift Services
STORAGE
Kubernetesservices
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Infrastructureservices
etcd
NETWORKCOMPUTE
Registry
Prometheus | Grafana Alertmanager
Kibana | Elasticsearch
Router
WORKER
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Registry
Prometheus | Grafana Alertmanager
Kibana | Elasticsearch
Router
integrated routing
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OPENSHIFT CONTAINER PLATFORM | Architectural Overview
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EXISTING AUTOMATION
TOOLSETS
SCM(GIT)
CI/CD
WORKERMASTER
OpenShift Services
STORAGE
Kubernetesservices
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Infrastructureservices
etcd
NETWORKCOMPUTE
Registry
Prometheus | Grafana Alertmanager
Kibana | Elasticsearch
RouterDevelopers
Admins
WORKER
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Registry
Prometheus | Grafana Alertmanager
Kibana | Elasticsearch
Router
dev and ops via web, cli, API, and IDE
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Red Hat Enterprise Linux CoreOS
Und was ist die Basis?
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OPENSHIFT CONTAINER PLATFORM | Architectural Overview
33
EXISTING AUTOMATION
TOOLSETS
SCM(GIT)
CI/CD
WORKERMASTER
OpenShift Services
STORAGE
Kubernetesservices
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Infrastructureservices
etcd
NETWORKCOMPUTE
Registry
Prometheus | Grafana Alertmanager
Kibana | Elasticsearch
RouterDevelopers
Admins
WORKER
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Registry
Prometheus | Grafana Alertmanager
Kibana | Elasticsearch
Router
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Immutable Operating SystemOPENSHIFT PLATFORM
Red Hat Enterprise Linux CoreOS is versioned with OpenShiftCoreOS is tested and shipped in conjunction with the platform. Red Hat runs thousands of tests against these configurations.
Red Hat Enterprise Linux CoreOS is managed by the clusterThe Operating system is operated as part of the cluster, with the config for components managed by Machine Config Operator:● CRI-O config● Kubelet config● Authorized registries● SSH config
v4.1.6
v4.1.6
RHEL CoreOS admins are responsible for:Nothing.
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OpenShift Architecture
35
A lightweight, OCI-compliant container runtime
Minimal and Secure Architecture
Optimized for Kubernetes
Runs any OCI-compliant image
(including docker)
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OpenShift Architecture
36
podman
A docker-compatible CLI for containers● Remote
management API via Varlink
● Image/container tagging
● Advanced namespace isolation
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OpenShift Architecture
37
buildah
Secure & flexible OCI container builds
● Integrated into OCP build pods
● Performance improvements for knative enablement
● Image signing improvements
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kubelet static containers scheduled containerssystemd-managed
native binaries
CoreOS “pod” architecture
kubelet CRI-O
etcd
kube-scheduler
kubecontroller-manager
kube-apiserver
coredns
openshift-apiserver
openshiftcontroller-manager
openshift-oauth
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OpenShift Monitoring
Das allsehende Auge!
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OPENSHIFT CONTAINER PLATFORM | Architectural Overview
40
EXISTING AUTOMATION
TOOLSETS
SCM(GIT)
CI/CD
WORKERMASTER
OpenShift Services
STORAGE
Kubernetesservices
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Infrastructureservices
etcd
NETWORKCOMPUTE
Registry
Prometheus | Grafana Alertmanager
Kibana | Elasticsearch
RouterDevelopers
Admins
WORKER
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Registry
Prometheus | Grafana Alertmanager
Kibana | Elasticsearch
Router
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OPENSHIFT MONITORING | Solution Overview
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OpenShift Cluster Monitoring
Metrics collection and storage via Prometheus, an
open-source monitoring system time series database.
Metrics visualization via Grafana, the leading metrics
visualization technology.
Alerting/notification via Prometheus’ Alertmanager, an open-source tool that handles
alerts send by Prometheus.
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OPENSHIFT MONITORING | Operator & Operand Relationships
cluster-monitoring-operator
prometheus-operator
Grafana
kube-state-metrics
node-exporter
openshift-state-metrics(4.2)
prometheus-adapter telemeter-client
Prometheus Alertmanager
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OPENSHIFT MONITORING | Prometheus, Grafana and Alertmanager Wiring
Infra/Worker (“hardware”)
Grafana Prometheus Alertmanager
Node (kubelet)
node-exporter
kube-state-metrics
Worker (“hardware”)
Node (kubelet)
node-exporter
Control Plane (API)
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OpenShift Logging
Ihr sucht, ihr findet!
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OPENSHIFT CONTAINER PLATFORM | Architectural Overview
45
EXISTING AUTOMATION
TOOLSETS
SCM(GIT)
CI/CD
WORKERMASTER
OpenShift Services
STORAGE
Kubernetesservices
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Infrastructureservices
etcd
NETWORKCOMPUTE
Registry
Prometheus | Grafana Alertmanager
Kibana | Elasticsearch
RouterDevelopers
Admins
WORKER
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Registry
Prometheus | Grafana Alertmanager
Kibana | Elasticsearch
Router
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Observability via log exploration and corroboration with EFK
OPENSHIFT LOGGING | Solution Overview
Components
○ Elasticsearch: a search and analytics engine to store logs○ Fluentd: gathers logs and sends to Elasticsearch.○ Kibana: A web UI for Elasticsearch.
Access control
○ Cluster administrators can view all logs○ Users can only view logs for their projects
Ability to forward logs elsewhere
○ External elasticsearch, Splunk, etc
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OPENSHIFT LOGGING | Operator & Operand Relationships
ElasticSearchOperator
Cluster LoggingOperator
ElasticSearchCluster
Kibana
...
Fluentd(per node)
Curator CronJob
Curator
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Node
FluentdNode
Fluentd
Log data flow in OpenShift
OPENSHIFT LOGGING | Architecture
Node
Fluentd
Elasticsearch Kibana
Application Logs
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TLSTLS
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Node (OS)
Log data flow in OpenShift
OPENSHIFT LOGGING | Architecture
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Elasticsearch
CRI-O
stdoutstderr
OS DISK
Fluentd
kubelet
journald
TLS
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Persistent Storage
Connecting real-world
storage to your
containers to enable
stateful applications
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OPENSHIFT CONTAINER PLATFORM | Architectural Overview
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EXISTING AUTOMATION
TOOLSETS
SCM(GIT)
CI/CD
WORKERMASTER
OpenShift Services
STORAGE
Kubernetesservices
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Infrastructureservices
etcd
NETWORKCOMPUTE
Registry
Prometheus | Grafana Alertmanager
Kibana | Elasticsearch
RouterDevelopers
Admins
WORKER
Monitoring | Logging | Tuned
SDN | DNS | Kubelet
Registry
Prometheus | Grafana Alertmanager
Kibana | Elasticsearch
Router
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A broad spectrum ofstatic and dynamic storage endpoints
OPENSHIFT CONTAINER PLATFORM | Persistent Storage
NFS
GlusterFS
OpenStack Cinder
Ceph RBD
AWS EBS
GCE Persistent Disk
iSCSI
Fiber Channel
Azure Disk
Azure File
FlexVolume
VMWare vSphere VMDK
Container Storage Interface (CSI)**NetApp Trident*
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PV Consumption
OPENSHIFT CONTAINER PLATFORM | Persistent Storage
Node
POD
CONTAINER
ClaimZ
apiVersion: v1kind: Podmetadata: name: mypodspec: containers: - name: myfrontend image: nginx volumeMounts: - mountPath: "/var/www/html" name: mypd volumes: - name: mypd persistentVolumeClaim: claimName: z
PV
Kubelet
Storage
/foo/bar
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iSCSIPV
iSCSIPVNFS
PV
NFSPV
Static Storage Provisioning
OPENSHIFT CONTAINER PLATFORM | Persistent Storage
AdminPersistentVolumes
NFSPV
iSCSIPV ...
ClaimZ
2Gi RWX
Bind
User
POD
CONTAINER
...VolumeMount: Z
Pod Definition
Mount
Define/Map
2Gi NFS
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Dynamic Storage Provisioning
OPENSHIFT CONTAINER PLATFORM | Persistent Storage
Admin
StorageClass
ClaimZ
2Gi RWXGood
Bind
User
...VolumeMount: Z
Pod Definition
MountFast
NetApp Flash
BlockVMware VMDK
GoodNetApp SSD
Master
NetApp SSD
2Gi NFS
PV
Crea
te
Map
POD
CONTAINER
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CONFIDENTIAL Designator
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Eure Fragen!
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Nützliches
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OpenShift Blog
Lerne OpenShift
Mein YouTube Channel
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CONFIDENTIAL Designator
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Danke!
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