K8s Applications mit MicroK8S auf Raspberry PI. Alfred Sabitzer
Читать онлайн.| Название | K8s Applications mit MicroK8S auf Raspberry PI |
|---|---|
| Автор произведения | Alfred Sabitzer |
| Жанр | Математика |
| Серия | |
| Издательство | Математика |
| Год выпуска | 0 |
| isbn | 9783742770134 |
labels:
app: getinfo
annotations:
sidecar.istio.io/inject: "false"
spec:
containers:
- name: getinfo
image: docker.registry:5000/getinfo:20211015
# resource limits
resources:
requests:
memory: "24Mi"
cpu: "500m" # half vcpu
limits:
memory: "64Mi"
cpu: "1000m" # one vcpu
env:
# currently no env vars used for this container
- name: FOO
value: bar
# check for lifetime liveness, restarts if dead
livenessProbe:
exec:
command:
- ls
initialDelaySeconds: 5
periodSeconds: 10
# check for initial readyness
readinessProbe:
exec:
command:
- ls
initialDelaySeconds: 3
periodSeconds: 3
# pod bekommt diesselbe Zeitzone wie der darunterliegende Node
volumeMounts:
- name: tz-local
mountPath: /etc/localtime
volumes:
- name: tz-local
hostPath: # abhängig vom darunterliegenden OS. Das hier ist linux.
path: /etc/localtime
restartPolicy: Always
dnsPolicy: ClusterFirst
---
apiVersion: v1
kind: Service
metadata:
name: getinfo-service
#namespace: default
labels:
app: getinfo
spec:
ports:
# port=available to other containers
- port: 8080
name: hello
# targetPort=exposed from inside container
targetPort: 8080
protocol: TCP
selector:
app: getinfo
---
Dieses yaml wenden wir nun im Cluster an.
alfred@pc1:~$ k apply -f getinfo.yaml
deployment.apps/getinfo created
service/getinfo-service created
alfred@pc1:~$ kubectl get all
NAME READY STATUS RESTARTS AGE
pod/webserver-slainte-67494d5d7b-hj99r 1/1 Running 22 67d
pod/getinfo-6c84cff999-mtf5v 1/1 Running 0 89s
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 10.152.183.1 <none> 443/TCP 67d
service/webserver-slainte ClusterIP 10.152.183.125 <none> 443/TCP 67d
service/getinfo-service ClusterIP 10.152.183.43 <none> 8080/TCP 6m12s
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/webserver-slainte 1/1 1 1 67d
deployment.apps/getinfo 1/1 1 1 6m12s
NAME DESIRED CURRENT READY AGE
replicaset.apps/webserver-slainte-67494d5d7b 1 1 1 67d
replicaset.apps/getinfo-6c84cff999 1 1 1 89s
replicaset.apps/getinfo-6659cf7655 0 0 0 6m12s
Die Anzeige im Dashboard zeigt uns auch einen gut laufenden Pod.
Nun schauen wir, was der Pod zurückliefert:
alfred@pc1:~$ curl http://10.152.183.43:8080/view/hello
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head> <meta http-equiv="content-type" content="text/html; charset=utf-8"/> <title></title> <meta name="generator" content="LibreOffice 7.1.6.2 (Linux)"/> <meta name="author" content="Alfred Sabitzer"/> <meta name="created" content="2021-10-07T16:33:50.696105947"/> <meta name="changedby" content="Alfred Sabitzer"/> <meta name="changed" content="2021-10-07T16:36:08.816466992"/> <style type="text/css"> @page { size: 21cm 29.7cm; margin: 2cm } p { margin-bottom: 0.25cm; line-height: 115%; background: transparent } td p { orphans: 0; widows: 0; background: transparent } </style></head><body lang="de-AT" link="#000080" vlink="#800000" dir="ltr"><p style="margin-bottom: 0cm; line-height: 100%"><p style="margin-bottom: 0cm; line-height: 100%"><br/></p><table width="100%" cellpadding="4" cellspacing="0"> <col width="64*"/> <col width="64*"/> <col width="64*"/> <col width="64*"/> <tr valign="top"> <td width="25%" style="border-top: 1px solid #000000; border-bottom: 1px solid #000000; border-left: 1px solid #000000; border-right: none; padding-top: 0.1cm; padding-bottom: 0.1cm; padding-left: 0.1cm; padding-right: 0cm"><p> OSENVIRONMENT</p> </td> <td width="25%" style="border-top: 1px solid #000000; border-bottom: 1px solid #000000; border-left: 1px solid #000000; border-right: none; padding-top: 0.1cm; padding-bottom: 0.1cm; padding-left: 0.1cm; padding-right: 0cm"><p> DISKUSAGE</p> </td> <td width="25%" style="border-top: 1px solid #000000; border-bottom: 1px solid #000000; border-left: 1px solid #000000; border-right: none; padding-top: 0.1cm; padding-bottom: 0.1cm; padding-left: 0.1cm; padding-right: 0cm"><p> HOSTINFO</p></td> <td width="25%" style="border: 1px solid #000000; padding: 0.1cm"><p> MEMINFO</p> </td> </tr> <tr valign="top"> <td width="25%" style="border-top: none; border-bottom: 1px solid #000000; border-left: 1px solid #000000; border-right: none; padding-top: 0cm; padding-bottom: 0.1cm; padding-left: 0.1cm; padding-right: 0cm"><p> PATH=>/go/bin:/usr/local/go/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin<br>HOSTNAME=>getinfo-6c84cff999-mtf5v<br>GOLANG_VERSION=>1.16.9<br>GOPATH=>/go<br>FOO=>bar<br>WEBSERVER_SLAINTE_PORT_443_TCP=>tcp://10.152.183.125:443<br>GETINFO_SERVICE_SERVICE_PORT=>8080<br>GETINFO_SERVICE_PORT=>tcp://10.152.183.43:8080<br>GETINFO_SERVICE_PORT_8080_TCP=>tcp://10.152.183.43:8080<br>GETINFO_SERVICE_PORT_8080_TCP_PROTO=>tcp<br>GETINFO_SERVICE_PORT_8080_TCP_ADDR=>10.152.183.43<br>WEBSERVER_SLAINTE_SERVICE_PORT=>443<br>WEBSERVER_SLAINTE_PORT=>tcp://10.152.183.125:443<br>KUBERNETES_SERVICE_HOST=>10.152.183.1<br>KUBERNETES_PORT=>tcp://10.152.183.1:443<br>KUBERNETES_PORT_443_TCP=>tcp://10.152.183.1:443<br>KUBERNETES_PORT_443_TCP_PORT=>443<br>WEBSERVER_SLAINTE_SERVICE_HOST=>10.152.183.125<br>WEBSERVER_SLAINTE_SERVICE_PORT_HTTPS=>443<br>WEBSERVER_SLAINTE_PORT_443_TCP_PROTO=>tcp<br>KUBERNETES_SERVICE_PORT=>443<br>KUBERNETES_PORT_443_TCP_PROTO=>tcp<br>GETINFO_SERVICE_SERVICE_PORT_HELLO=>8080<br>GETINFO_SERVICE_PORT_8080_TCP_PORT=>8080<br>WEBSERVER_SLAINTE_PORT_443_TCP_PORT=>443<br>WEBSERVER_SLAINTE_PORT_443_TCP_ADDR=>10.152.183.125<br>KUBERNETES_SERVICE_PORT_HTTPS=>443<br>KUBERNETES_PORT_443_TCP_ADDR=>10.152.183.1<br>GETINFO_SERVICE_SERVICE_HOST=>10.152.183.43<br>HOME=>/root<br>