k8s系列(6)-Helm

1. 下载
wget https://get.helm.sh/helm-v3.2.4-linux-amd64.tar.gz
2. 解压
tar -zxvf helm-v3.2.4-linux-amd64.tar.gz
3. 移动
mv linux-amd64/helm /usr/local/bin/helm

# 安装
helm repo add bitnami https://charts.bitnami.com/bitnami
helm install my-mongo bitnami/mongodb

# 指定密码和架构
helm install my-mongo bitnami/mongodb --set architecture="replicaset",auth.rootPassword="mongopass"

# 删除
helm ls
helm delete my-mongo

# 查看密码
kubectl get secret my-mongo-mongodb -o json
kubectl get secret my-mongo-mongodb -o yaml > secret.yaml

# 临时运行一个包含 mongo client 的 debian 系统
kubectl run mongodb-client --rm --tty -i --restart='Never' --image docker.io/bitnami/mongodb:4.4.10-debian-10-r20 --command -- bash

# 进去 mongodb
mongo --host "my-mongo-mongodb" -u root -p mongopass

# 也可以转发集群里的端口到宿主机访问 mongodb
kubectl port-forward svc/my-mongo-mongodb 27017:27018

[root@VM-79-37-centos ~]# helm install my-mongo bitnami/mongodb --set architecture="replicaset",auth.rootPassword="mongopass"
[root@VM-79-37-centos ~]# kubectl run mongodb-client --rm --tty -i --restart='Never' --image docker.io/bitnami/mongodb:4.4.10-debian-10-r20 --command -- bash

If you don't see a command prompt, try pressing enter.

I have no name!@mongodb-client:/$ mongo --host my-mongo-mongodb-0.my-mongo-mongodb-headless.default.svc.cluster.local:27017 -u root -p mongopass

rs0:PRIMARY> exit

bye

I have no name!@mongodb-client:/$ mongo --host my-mongo-mongodb-1.my-mongo-mongodb-headless.default.svc.cluster.local:27017 -u root -p mongopass

rs0:SECONDARY> show dbs

uncaught exception: Error: listDatabases failed:{


^C[root@VM-79-37-centos ~]# kubectl get pvc

NAME                         STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS   AGE

datadir-my-mongo-mongodb-0   Bound    pvc-93f8f01b-af14-4680-a2a0-b5868b0b0ee8   8Gi        RWO            standard       18m

datadir-my-mongo-mongodb-1   Bound    pvc-fedbe73d-ad3f-4d97-a4ba-12127482e3ca   8Gi        RWO            standard       18m

[root@VM-79-37-centos ~]# kubectl get pv

NAME                                       CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS   CLAIM                                STORAGECLASS   REASON   AGE

pvc-93f8f01b-af14-4680-a2a0-b5868b0b0ee8   8Gi        RWO            Delete           Bound    default/datadir-my-mongo-mongodb-0   standard                18m

pvc-fedbe73d-ad3f-4d97-a4ba-12127482e3ca   8Gi        RWO            Delete           Bound    default/datadir-my-mongo-mongodb-1   standard                18m

[root@VM-79-37-centos ~]# kubectl get sc

NAME                 PROVISIONER                RECLAIMPOLICY   VOLUMEBINDINGMODE   ALLOWVOLUMEEXPANSION   AGE

standard (default)   k8s.io/minikube-hostpath   Delete          Immediate           false                  31d