[1] MicroK8s – Instalacja

Zainstaluj [MicroK8s], czyli „odchudzony” Kubernetes dostarczony przez firmę Canonical.

[1] Zainstaluj Snappy: [18] Snappy – Instalacja

[2] Zainstaluj MicroK8s za pomocą Snappy.

[root@vlsr01 ~]# snap install microk8s --classic

[3] Po instalacji MicroK8s zostanie on uruchomiony automatycznie. Aby go zatrzymać/uruchomić zrób jak poniżej.

# pokaż status
[root@vlsr01 ~]# microk8s status
microk8s is running
high-availability: no
datastore master nodes: 127.0.0.1:19001
datastore standby nodes: none
addons:
enabled:
ha-cluster # Configure high availability on the current node
disabled:
ambassador # Ambassador API Gateway and Ingress
cilium # SDN, fast with full network policy
dashboard # The Kubernetes dashboard
dns # CoreDNS
fluentd # Elasticsearch-Fluentd-Kibana logging and monitoring
gpu # Automatic enablement of Nvidia CUDA
helm # Helm 2 - the package manager for Kubernetes
helm3 # Helm 3 - Kubernetes package manager
host-access # Allow Pods connecting to Host services smoothly
ingress # Ingress controller for external access
istio # Core Istio service mesh services
jaeger # Kubernetes Jaeger operator with its simple config
keda # Kubernetes-based Event Driven Autoscaling
knative # The Knative framework on Kubernetes.
kubeflow # Kubeflow for easy ML deployments
linkerd # Linkerd is a service mesh for Kubernetes and other frameworks
metallb # Loadbalancer for your Kubernetes cluster
metrics-server # K8s Metrics Server for API access to service metrics
multus # Multus CNI enables attaching multiple network interfaces to pods
portainer # Portainer UI for your Kubernetes cluster
prometheus # Prometheus operator for monitoring and logging
rbac # Role-Based Access Control for authorisation
registry # Private image registry exposed on localhost:32000
storage # Storage class; allocates storage from host directory
traefik # traefik Ingress controller for external access

# pokaż konfigurację
[root@vlsr01 ~]# microk8s config
apiVersion: v1
clusters:
- cluster:
certificate-authority-data: LS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0tLS0tCk1JSURBVENDQWVtZ0F3SUJBZ0lKQUppZ2Ivd1BXb2pRTUo=
server: https://192.168.100.101:16443
name: microk8s-cluster
contexts:
- context:
cluster: microk8s-cluster
user: admin
name: microk8s
current-context: microk8s
kind: Config
preferences: {}
users:
- name: admin
user:
token: WHFUN1ZtL3QzLy9SKzd4QmsdfgregergSE4yR2xJNXEwOTJEN2hRTi9iY1FEMD0K

[root@vlsr01 ~]# microk8s kubectl get all
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 10.152.183.1 <none> 443/TCP 9m41s

[root@vlsr01 ~]# microk8s kubectl get nodes
NAME STATUS ROLES AGE VERSION
vlsr01.zicher.lab Ready <none> 10m v1.20.1-34+e7db93d188d0d1

# stop MicroK8s
[root@vlsr01 ~]# microk8s stop
stop of [microk8s.daemon-apiserver microk8s.daemon-apiserver-kicker microk8s.daemon-cluster-agent microk8s.…
Stopped.

[root@vlsr01 ~]# microk8s status
microk8s is not running, try microk8s start

# start MicroK8s
[root@vlsr01 ~]# microk8s start
Started.

# wyłącz MicroK8S
[root@vlsr01 ~]# snap disable microk8s
microk8s disabled

# włącz MicroK8s
[root@vlsr01 ~]# snap enable microk8s
microk8s enabled