helm repo add bitnami https://charts.bitnami.com/bitnami
helm repo update && helm repo list
kubectl config get-contexts
Config
export KUBECONFIG="${HOME}/.kube/dev-kubeconfig.yaml"
export KUBECONFIG="${HOME}/.kube/gcp-kubeconfig.yaml"
export KUBECONFIG="${HOME}/.kube/config"
Install
kubectl get ns|grep mariadb
kubectl delete ns mariadb
kubectl get ns|grep mariadb
kubectl create ns mariadb
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cat <<ENV | kubectl -n mariadb create secret generic mariadb --from-env-file=/dev/stdin
mariadb-replication-password=sadaqah!
mariadb-root-password=sadaqah!
mariadb-password=sadaqah!
ENV
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cat <<YML | helm -n mariadb install mariadb bitnami/mariadb --version=19.0.5 -f -
---
global:
defaultStorageClass: standard
architecture: standalone
auth:
database: academia
username: academia
existingSecret: mariadb
initdbScripts:
init-chorke.sql: |
-- create database
CREATE DATABASE IF NOT EXISTS academia_flair_staging;
CREATE DATABASE IF NOT EXISTS academia_audit_staging;
CREATE DATABASE IF NOT EXISTS academia_quote_staging;
CREATE DATABASE IF NOT EXISTS academia_users_staging;
CREATE DATABASE IF NOT EXISTS chorke;
-- create user
CREATE USER 'chorke'@'%' IDENTIFIED BY 'sadaqah!';
-- grant access
GRANT ALL PRIVILEGES ON academia_flair_staging.* TO 'chorke'@'%';
GRANT ALL PRIVILEGES ON academia_audit_staging.* TO 'chorke'@'%';
GRANT ALL PRIVILEGES ON academia_quote_staging.* TO 'chorke'@'%';
GRANT ALL PRIVILEGES ON academia_users_staging.* TO 'chorke'@'%';
GRANT ALL PRIVILEGES ON chorke.* TO 'chorke'@'%';
YML
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echo -n password: ;read -s MYSQL_PWD;export MYSQL_PWD;echo
mariadb -hmariadb.k8s.local -p3306 -uacademia academia
mariadb -hmariadb.k8s.local -p3306 -uroot mysql
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echo -n password: ;read -s MYSQL_PWD;export MYSQL_PWD;echo
mariadb 'mariadb://root@mariadb.k8s.local:3306/academia'
mariadb 'mariadb://root@mariadb.k8s.local:3306/mysql'
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Uninstall
helm uninstall -n mariadb mariadb
kubectl delete namespace mariadb
Swiss Knife
kubectl -n mariadb run -i --tty --rm mariadb-client --image=alpine --restart=Never -- sh
echo -n password: ;read -s MYSQL_PWD;export MYSQL_PWD; echo
apk --update add --no-cache mariadb-client inetutils-telnet
mariadb -hmariadb.mariadb.svc.cluster.local -uroot academia
mariadb -hmariadb.mariadb.svc -uroot academia
mariadb -hmariadb.mariadb -uroot academia
mariadb -hmariadb -uroot academia
AWS » EKS
AWS » EKS » EBS
cat << YML | kubectl apply -f -
---
apiVersion: v1
kind: PersistentVolume
metadata:
name: mariadb-pv
spec:
accessModes:
- ReadWriteOnce
awsElasticBlockStore:
fsType: ext4
volumeID: aws://ap-southeast-1/vol-0bbbd80804f1ae62a
capacity:
storage: 10Gi
persistentVolumeReclaimPolicy: Retain
storageClassName: "gp2"
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
labels:
app.kubernetes.io/name: mariadb
name: mariadb-pvc
namespace: mariadb
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 10Gi
storageClassName: "gp2"
volumeName: mariadb-pv
YML
AWS » EKS » Patch
kubectl -n mariadb get sts/mariadb -ojson|jq -r '.spec.template.spec.nodeSelector'
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cat <<YML | kubectl -n mariadb patch sts/mariadb --patch-file=/dev/stdin
---
spec:
template:
spec:
nodeSelector:
topology.kubernetes.io/zone: minikube
YML
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cat <<YML | kubectl -n mariadb patch sts/mariadb --patch-file=/dev/stdin
---
spec:
template:
spec:
nodeSelector:
topology.kubernetes.io/zone: ap-southeast-1a
YML
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kubectl -n mariadb get sts/mariadb -ojson|jq -r '.spec.template.spec.nodeSelector'
kubectl -n mariadb delete pods --all
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Playground
helm -n mariadb install mariadb bitnami/mariadb --version=19.0.0
helm -n mariadb upgrade -i mariadb bitnami/mariadb --version=19.0.5
helm show values bitnami/mariadb --version=19.0.5|less
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kubectl -n mariadb get secret mariadb -o json|jq -r '.data."mariadb-replication-password"'|base64 -d;echo
kubectl -n mariadb get secret mariadb -o json|jq -r '.data."mariadb-root-password"'|base64 -d;echo
kubectl -n mariadb get secret mariadb -o json|jq -r '.data."mariadb-password"'|base64 -d;echo
kubectl -n mariadb exec -it svc/mariadb -c mariadb -- mariadb -uacademia academia -p
kubectl -n mariadb exec -it svc/mariadb -c mariadb -- bash
kubectl -n mariadb exec -it svc/mariadb -- mysql -uroot -p
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kubectl config --kubeconfig=${HOME}/.kube/aws-kubeconfig.yaml view --flatten
kubectl config --kubeconfig=${HOME}/.kube/dev-kubeconfig.yaml view --flatten
kubectl config --kubeconfig=${HOME}/.kube/gcp-kubeconfig.yaml view --flatten
kubectl config --kubeconfig=${HOME}/.kube/config view --flatten
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kubectl -n mariadb delete all --all
kubectl -n mariadb delete ing --all
kubectl -n mariadb delete sts --all
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kubectl -n mariadb delete svc --all
kubectl -n mariadb delete pvc --all
kubectl -n mariadb delete pv --all
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kubectl -n mariadb rollout history sts mariadb
kubectl -n mariadb rollout restart sts mariadb
kubectl -n mariadb rollout status sts mariadb
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kubectl -n mariadb exec -it mariadb-0 -- mariadb -uroot -p
kubectl -n mariadb logs -f svc/mariadb -c mariadb
kubectl -n mariadb logs -f svc/mariadb
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References