K0s kasutamine: erinevus redaktsioonide vahel
Resümee puudub |
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209. rida: | 209. rida: | ||
</pre> |
</pre> |
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+ | MetalLB võimalusi kasutava service paigaldamiseks sobib kasutada sellist manifesti |
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− | TODO |
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+ | |||
+ | <pre> |
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+ | # cat create-metallb-base-service.yaml |
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+ | apiVersion: v1 |
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+ | kind: Namespace |
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+ | metadata: |
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+ | name: web |
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+ | --- |
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+ | apiVersion: apps/v1 |
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+ | kind: Deployment |
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+ | metadata: |
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+ | name: web-server |
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+ | namespace: web |
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+ | spec: |
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+ | selector: |
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+ | matchLabels: |
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+ | app: web |
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+ | template: |
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+ | metadata: |
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+ | labels: |
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+ | app: web |
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+ | spec: |
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+ | containers: |
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+ | - name: httpd |
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+ | image: httpd:2.4.53-alpine |
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+ | ports: |
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+ | - containerPort: 80 |
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+ | --- |
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+ | apiVersion: v1 |
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+ | kind: Service |
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+ | metadata: |
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+ | name: web-server-service |
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+ | namespace: web |
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+ | spec: |
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+ | selector: |
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+ | app: web |
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+ | ports: |
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+ | - protocol: TCP |
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+ | port: 80 |
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+ | targetPort: 80 |
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+ | type: LoadBalancer |
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+ | </pre> |
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+ | |||
+ | ning öelda |
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+ | |||
+ | <pre> |
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+ | # k0s kubectl apply -f create-metallb-base-service.yaml |
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+ | </pre> |
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+ | |||
+ | Tulemusena saab brauserist pöörduda aadressile http://192.168.10.120/ (konkreetne ip valitakse pool sees nii nagu ta parasjagu valitakse), küsida saab nii |
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+ | |||
+ | <pre> |
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+ | # k0s kubectl get service -n web |
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+ | NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE |
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+ | web-server-service LoadBalancer 10.106.230.54 192.168.10.120 80:32482/TCP 6s |
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+ | </pre> |
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====Paigaldamine - openebs + metallb + nginx==== |
====Paigaldamine - openebs + metallb + nginx==== |
Redaktsioon: 29. august 2023, kell 23:50
Sissejuhatus
TODO
Tööpõhimõte
TODO
Paigaldamine
Järgnevas kirjeldatakse k0s süsteemi paigaldamise variatsioone
Paigaldamine - vanilla
Väited
- süsteem töötab ilma k0s seadistuseta
- ei ole paigaldatud pv jaoks vajalikku storage class lahendust paigaldamise osana
- ei ole paigaldatud ingress controller'it paigaldamise osana
https://docs.k0sproject.io/v1.27.5+k0s.0/install/, kõige lihtsamal juhtumil paigadamine ja käivitamine
# curl -sSLf https://get.k0s.sh | sudo sh # k0s install controller --single # k0s start # k0s status # k0s kubectl get nodes
k0s protsesside lõpetamine ja süsteemist eemaldamine
# k0s stop # k0s reset # reboot
Paigaldamine - vanilla + openebs
Väited
- paigaldust juhitakse k0s seadistusfailiga
- paigaldamise käigus tekib lisaks 'Paigaldamine - vanilla' olukorrale openebs storage lahendus
- https://docs.k0sproject.io/v1.27.5+k0s.0/storage/ (navigeerida 'Usage -> Storage (CSI)')
esmalt moodustatakse k0s seadistusfail
# mkdir /etc/k0s # k0s config create > /etc/k0s/k0s.yaml
ning kasutatakse k0s.yaml failis muu hulgas sektsiooni (need direktiivid ei esine tõenäoliselt litrally järjest, aga on spreitud sobivalt)
spec: extensions: storage: type: openebs_local_storage
k0s süsteemi käivitamine toimub samamoodi nagu vanilla juhtumil. Oodatav tulemus on, et süsteemis on olemas openebs storage class
# k0s kubectl get storageclass NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE openebs-device openebs.io/local Delete WaitForFirstConsumer false 6d2h openebs-hostpath openebs.io/local Delete WaitForFirstConsumer false 6d2h
Storage class saab kasutada nt sellise nginx yaml abil
apiVersion: v1 kind: Namespace metadata: name: web --- apiVersion: v1 kind: Service metadata: name: web-server-service namespace: web spec: selector: app: web ports: - protocol: TCP port: 5000 targetPort: 80 --- apiVersion: v1 kind: PersistentVolumeClaim metadata: name: nginx-pvc namespace: web spec: accessModes: - ReadWriteOnce storageClassName: openebs-hostpath resources: requests: storage: 512Mi --- apiVersion: apps/v1 kind: Deployment metadata: name: nginx namespace: web labels: app: nginx spec: selector: matchLabels: app: nginx strategy: type: Recreate template: metadata: labels: app: nginx spec: containers: - image: nginx name: nginx volumeMounts: - name: persistent-storage mountPath: /var/lib/nginx volumes: - name: persistent-storage persistentVolumeClaim: claimName: nginx-pvc
Deployimiseks sobib öelda
# kubectl apply -f create-pvc.yaml
Tulemusena tekib deployment, eriti kasutatakse pv/pvc ressursse (pv ei ole namespace põhine ressurss)
# k0s kubectl get pvc -n web NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE nginx-pvc Bound pvc-4bba23d7-eeb6-4485-b1df-b2b4c6657665 512Mi RWO openebs-hostpath 58s # k0s kubectl get pv NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE pvc-4bba23d7-eeb6-4485-b1df-b2b4c6657665 512Mi RWO Delete Bound web/nginx-pvc openebs-hostpath 49s
Kustutamiseks sobib öelda
# kubectl delete -f create-pvc.yaml
Paigaldamine - vanilla + metallb
Väited
Paigaldamiseks sobib kasutada custom k0s seadistusfailis lisaks sektsiooni
spec: extensions: helm: repositories: - name: metallb url: https://metallb.github.io/metallb charts: - name: metallb chartname: metallb/metallb namespace: metallb
ning paigaldada k0s nö tavalisel viisil custom seadistust arvestades. Seejärel moodustada IPAddressPool ja L2Advertisement tüüpi ressursid, kasutada sobivat ip vahemikku
--- apiVersion: metallb.io/v1beta1 kind: IPAddressPool metadata: name: first-pool namespace: metallb-system spec: addresses: - 192.168.10.120-192.168.10.124 --- apiVersion: metallb.io/v1beta1 kind: L2Advertisement metadata: name: example namespace: metallb-system
Tulemusena on olemas vastavad ressursid
# k0s kubectl get IPAddressPool -n metallb NAME AGE first-pool 9m51s # k0s kubectl get L2Advertisement -n metallb NAME AGE example 9m54s
MetalLB võimalusi kasutava service paigaldamiseks sobib kasutada sellist manifesti
# cat create-metallb-base-service.yaml apiVersion: v1 kind: Namespace metadata: name: web --- apiVersion: apps/v1 kind: Deployment metadata: name: web-server namespace: web spec: selector: matchLabels: app: web template: metadata: labels: app: web spec: containers: - name: httpd image: httpd:2.4.53-alpine ports: - containerPort: 80 --- apiVersion: v1 kind: Service metadata: name: web-server-service namespace: web spec: selector: app: web ports: - protocol: TCP port: 80 targetPort: 80 type: LoadBalancer
ning öelda
# k0s kubectl apply -f create-metallb-base-service.yaml
Tulemusena saab brauserist pöörduda aadressile http://192.168.10.120/ (konkreetne ip valitakse pool sees nii nagu ta parasjagu valitakse), küsida saab nii
# k0s kubectl get service -n web NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE web-server-service LoadBalancer 10.106.230.54 192.168.10.120 80:32482/TCP 6s
Paigaldamine - openebs + metallb + nginx
TODO
Paigaldamine - traefik
k0s tarkvara paigaldamiseks sobib öelda
# curl -sSLf https://get.k0s.sh | sudo sh
kus
- TODO
Moodustada vaikimisi seadistusfail
# mkdir /etc/k0s # k0s config create > /etc/k0s/k0s.yaml
Lisada seadistusfaili
- openebs storage
- metallb
- traefik
Kokku on seadistusfail selline, lisatud lõigud on tähistatud
# cat /etc/k0s/k0s.yaml apiVersion: k0s.k0sproject.io/v1beta1 kind: ClusterConfig metadata: creationTimestamp: null name: k0s spec: api: address: 192.168.10.182 k0sApiPort: 9443 port: 6443 sans: - 192.168.10.182 - fe80::9867:8bff:fef0:3754 tunneledNetworkingMode: false controllerManager: {} # alates siit extensions: helm: repositories: - name: traefik url: https://traefik.github.io/charts - name: bitnami url: https://charts.bitnami.com/bitnami charts: - name: traefik chartname: traefik/traefik version: "20.5.3" namespace: default - name: metallb chartname: bitnami/metallb version: "2.5.4" namespace: default values: |2 configInline: address-pools: - name: generic-cluster-pool protocol: layer2 addresses: - 192.168.10.131-192.168.10.135 storage: type: openebs_local_storage # lopetades siin installConfig: users: etcdUser: etcd kineUser: kube-apiserver konnectivityUser: konnectivity-server kubeAPIserverUser: kube-apiserver kubeSchedulerUser: kube-scheduler ...
Paigaldatakse
# k0s install controller --single
Käivitada, seejuures tekitatakse systemd unit seadistus
# k0s start
systemd unit seadistust saab esitada
# systemctl status k0scontroller
Tulemusena on ootus et kubernetest saab kasutada, nt
# export KUBECONFIG=/var/lib/k0s/pki/admin.conf # k0s kubectl get nodes NAME STATUS ROLES AGE VERSION k0s-traefik Ready control-plane 2m35s v1.27.3+k0s
Kasulikud lisamaterjalid
- TODO