Minikube Registry
minikube stop
minikube delete --all
rm -rf ${HOME}/.minikube/*
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minikube start
minikube docker-env
minikube addons list
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for p in ingress ingress-dns registry dashboard metrics-server;\
do minikube addons enable ${p};done
minikube addons list
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kubectl get ns
kubectl get all
kubectl get all -A
kubectl get pods -A
kubectl get namespaces
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minikube kubectl -- get ns
minikube kubectl -- get all
minikube kubectl -- get all -A
minikube kubectl -- get pods -A
minikube kubectl -- get namespaces
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kubectl get all -n kube-system
kubectl get configmap -n kube-system
kubectl get configmap coredns -n kube-system
kubectl edit configmap coredns -n kube-system
kubectl get configmap coredns -n kube-system -o yaml
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Ingress
# minikube nameserver ip
printf -v MINIKUBE_NSLOOKUP '%s' $(minikube ip)
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# minikube find coredns last entry
CONFIGMAP_COREDNS_FIND=$(cat <<QRY
}\n\
cache 30\n\
loop\n\
reload\n\
loadbalance\n\
}
QRY
)
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# minikube fill coredns last entry
CONFIGMAP_COREDNS_FILL=$(cat <<UPD
${CONFIGMAP_COREDNS_FIND}\n\
k8s.local:53 {\n\
errors\n\
cache 30\n\
forward . ${MINIKUBE_NSLOOKUP}\n\
}
UPD
)
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K8s » CoreDNS | |
# minikube update coredns entry for k8s.local
kubectl get configmap coredns -n kube-system -o yaml \
| sed -z "s|${CONFIGMAP_COREDNS_FIND}|$(echo "${CONFIGMAP_COREDNS_FILL}")|" \
| kubectl apply -n kube-system -f -
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K8s » Registry | |
cat << YML | kubectl -n kube-system apply -f -
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: registry
namespace: kube-system
labels:
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/name: registry
app.kubernetes.io/instance: registry
app.kubernetes.io/managed-by: Chorke-Academia-Inc
annotations:
kubernetes.io/ingress.class: nginx
nginx.ingress.kubernetes.io/proxy-body-size: "0"
spec:
ingressClassName: nginx
rules:
- host: "registry.k8s.local"
http:
paths:
- path: /
pathType: ImplementationSpecific
backend:
service:
name: registry
port:
number: 80
YML
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cat << YML | kubectl -n kube-system delete -f -
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: registry
namespace: kube-system
labels:
app.kubernetes.io/version: 1.0.0
app.kubernetes.io/name: registry
app.kubernetes.io/instance: registry
app.kubernetes.io/managed-by: Chorke-Academia-Inc
annotations:
kubernetes.io/ingress.class: nginx
nginx.ingress.kubernetes.io/proxy-body-size: "0"
spec:
ingressClassName: nginx
rules:
- host: "registry.k8s.local"
http:
paths:
- path: /
pathType: ImplementationSpecific
backend:
service:
name: registry
port:
number: 80
YML
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kubectl run -i --tty --rm debug --image=alpine --restart=Never -- nslookup registry.k8s.local
kubectl run -i --tty --rm debug --image=alpine --restart=Never -- ping registry.k8s.local
kubectl -n kube-system get ingress registry -o yaml
nslookup registry.k8s.local $(minikube ip)
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K8s » DNS Config | |
RESOLVE='/etc/resolv.conf';\
printf -v K8S_DNS '%s' $(minikube ip);\
if [ -f ${RESOLVE} ]&&[ "$(grep -c ${K8S_DNS} ${RESOLVE})" == 0 ];then\
cat << EOF | sudo tee -a ${RESOLVE} >/dev/null
# minikube dns server
nameserver ${K8S_DNS}
EOF
fi;\
cat ${RESOLVE}
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nslookup registry.k8s.local
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ping registry.k8s.local
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xdg-open http://registry.k8s.local/v2/_catalog &>/dev/null &
gnome-open http://registry.k8s.local/v2/_catalog &>/dev/null &
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x-www-browser http://registry.k8s.local/v2/_catalog &>/dev/null &
sensible-browser http://registry.k8s.local/v2/_catalog &>/dev/null &
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K8s » Docker | |
cat << EXE | sudo bash
cat /etc/docker/daemon.json \
|jq '."insecure-registries"=["registry.k8s.local"]' \
|tee /etc/docker/daemon.json >/dev/null
systemctl restart docker
EXE
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cat << EXE | bash
cat /etc/docker/daemon.json|jq .
systemctl status docker
minikube start
minikube status
EXE
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cat << EXE | bash
docker pull alpine:latest
docker tag alpine:latest registry.k8s.local/alpine:latest
docker push registry.k8s.local/alpine:latest
curl -s http://registry.k8s.local/v2/_catalog|jq -r '.repositories[0]'
curl -s http://registry.k8s.local/v2/_catalog|jq -r '.repositories|length'
EXE
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Playground
watch kubectl get pods -n kube-system watch minikube ssh -- cat /etc/hosts |
References
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