3.1.1 使用Helm部署Redis

# 添加Redis Helm仓库
helm repo add bitnami https://charts.bitnami.com/bitnami
# 部署Redis
helm install redis bitnami/redis --namespace middleware --create-namespace --set auth.password=yourpassword
# 查看Redis状态
kubectl get pods -n middleware

执行 →

NAME               READY   STATUS    RESTARTS   AGE
redis-master-0     1/1     Running   0          5m
redis-replicas-0   1/1     Running   0          5m
redis-replicas-1   1/1     Running   0          5m

3.2.1 使用Helm部署Kafka

，学习交流加群风哥QQ113257174。

# 添加Kafka Helm仓库
helm repo add bitnami https://charts.bitnami.com/bitnami
# 部署Kafka
helm install kafka bitnami/kafka --namespace middleware --create-namespace --set replicaCount=3
# 查看Kafka状态
kubectl get pods -n middleware

执行 →

NAME              READY   STATUS    RESTARTS   AGE
kafka-0           1/1     Running   0          5m
kafka-1           1/1     Running   0          5m
kafka-2           1/1     Running   0          5m
kafka-zookeeper-0 1/1     Running   0          5m

3.3.1 使用Helm部署MySQL

# 添加MySQL Helm仓库
helm repo add bitnami https://charts.bitnami.com/bitnami
# 部署MySQL
helm install mysql bitnami/mysql --namespace middleware --create-namespace --set auth.rootPassword=yourpassword --set auth.database=fgedudb
# 查看MySQL状态
kubectl get pods -n middleware

执行 →

NAME                READY   STATUS    RESTARTS   AGE
mysql-primary-0     1/1     Running   0          5m
mysql-secondary-0   1/1     Running   0          5m

4.1.1 连接Redis

# 获取Redis密码，更多视频教程www.fgedu.net.cn。
REDIS_PASSWORD=$(kubectl get secret --namespace middleware redis -o jsonpath="{.data.redis-password}" | base64 --decode)
# 连接Redis
kubectl run redis-client --rm --tty -i --restart='Never' --namespace middleware --image docker.io/bitnami/redis:7.0.8 -- redis-cli -h redis-master -a $REDIS_PASSWORD

执行 →

OK
redis-master:6379> get fgedu:key
“Hello Kubernetes”
redis-master:6379> exit

4.2.1 创建Kafka主题

# 创建Kafka主题
kubectl run kafka-client --rm --tty -i --restart='Never' --namespace middleware --image docker.io/bitnami/kafka:3.2.3 -- bash
# 在容器内执行
topic=fgedu-topic
broker=kafka:9092
/kafka/bin/kafka-topics.sh --create --topic $topic --bootstrap-server $broker --replication-factor 3 --partitions 3

执行 →

Created topic fgedu-topic.

4.2.2 生产和消费消息

# 生产消息
/kafka/bin/kafka-console-producer.sh --topic $topic --bootstrap-server $broker
> Message 1
> Message 2
> Message 3
# 消费消息（在另一个终端）
/kafka/bin/kafka-console-consumer.sh --topic $topic --from-beginning --bootstrap-server $broker

执行 →

Message 1
Message 2
Message 3，更多学习教程公众号风哥教程itpux_com。

4.3.1 连接MySQL

# 获取MySQL密码
MYSQL_ROOT_PASSWORD=$(kubectl get secret --namespace middleware mysql -o jsonpath="{.data.mysql-root-password}" | base64 --decode)
# 连接MySQL
kubectl run mysql-client --rm --tty -i --restart='Never' --namespace middleware --image docker.io/bitnami/mysql:8.0.30 -- mysql -h mysql-primary -u root -p$MYSQL_ROOT_PASSWORD

执行 →

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 123
Server version: 8.0.30 MySQL Community Server - GPL
Copyright (c) 2000, 2022, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> use fgedudb;
Database changed
Query OK, 0 rows affected (0.01 sec)
mysql> insert into fgedu_users values (1, 'fgedu01'), (2, 'fgedu02');
Query OK, 2 rows affected (0.00 sec)
Records: 2  Duplicates: 0  Warnings: 0
mysql> select * from fgedu_users;
+----+--------+
| id | name   |
+----+--------+
|  1 | fgedu01 |
|  2 | fgedu02 |
+----+--------+
2 rows in set (0.00 sec)
mysql> exit
Bye