环境准备
Kubernetes准备
你需要准备一个Kubernetes集群,如图我的集群已经准备完毕:
数据库准备
nacos可以将配置文件存储到数据库当中,所以我们要先准备一个拥有nacos数据表结构的数据库,这样的数据库镜像我已经准备好了,当然你也可以自己制作这个镜像:
registry.cn-shenzhen.aliyuncs.com/xiaohh-docker/nacos-mysql:2.0.4
我之前写过一篇Kubernetes上安装数据库的文章:https://blog.csdn.net/m0_51510236/article/details/132482351,这里我就直接上yaml文件了,注意镜像使用的是上面提到的带有nacos配置表结构的镜像:
apiVersion: v1
kind: Namespace
metadata:
name: deploy-test
spec: {}
status: {}
---
apiVersion: v1
kind: PersistentVolume
metadata:
name: deploy-mysql-nfs-pv
namespace: deploy-test
spec:
capacity:
storage: 1Gi
accessModes:
- ReadWriteMany
nfs:
# 注意修改你的nfs服务器地址和目录
server: 192.168.1.160
path: /data/nfs/nacos-mysql
storageClassName: "nfs"
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: deploy-mysql-nfs-pvc
namespace: deploy-test
spec:
accessModes:
- ReadWriteMany
storageClassName: "nfs"
resources:
requests:
storage: 1Gi
volumeName: deploy-mysql-nfs-pv
---
apiVersion: v1
data:
# 密码为root,具体密码设置可参考我上篇文章
mysql_root_password: cm9vdA==
kind: Secret
metadata:
name: mysql-password
namespace: deploy-test
---
apiVersion: v1
kind: Service
metadata:
name: deploy-mysql-svc
namespace: deploy-test
labels:
app: mysql
spec:
ports:
- port: 3306
name: mysql
targetPort: 3306
nodePort: 30306
selector:
app: mysql
type: NodePort
sessionAffinity: ClientIP
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: deploy-mysql
namespace: deploy-test
spec:
selector:
matchLabels:
app: mysql
serviceName: "deploy-mysql-svc"
replicas: 1
template:
metadata:
labels:
app: mysql
spec:
terminationGracePeriodSeconds: 10
containers:
- args:
- --character-set-server=utf8mb4
- --collation-server=utf8mb4_unicode_ci
- --lower_case_table_names=1
- --default-time_zone=+8:00
name: mysql
image: registry.cn-shenzhen.aliyuncs.com/xiaohh-docker/nacos-mysql:2.0.4
ports:
- containerPort: 3306
name: mysql
volumeMounts:
- name: mysql-data
mountPath: /var/lib/mysql
env:
- name: MYSQL_ROOT_PASSWORD
valueFrom:
secretKeyRef:
key: mysql_root_password
name: mysql-password
volumes:
- name: mysql-data
persistentVolumeClaim:
claimName: deploy-mysql-nfs-pvc
查看创建结果:
kubectl get all -o wide -n deploy-test
发现容器以及运行:
进入容器当中查看表结构:
kubectl exec -itn deploy-test pod/deploy-mysql-0 -- mysql -uroot -p
查看结果,目前已经拥有这样的表结构:
部署nacos集群
我们部署mysql的时候创建了一个 deploy-test
命名空间,部署nacos的时候将nacos部署到这个命名空间当中。
官方镜像地址
nacos官方提供的镜像地址:https://hub.docker.com/r/nacos/nacos-server,在当中我们可以看到有那么多环境变量配置:
创建configmap
上面那张图片中我们要用到这么几个参数:
参数名 | 描述 |
---|---|
MODE | nacos启动模式,cluster为集群模式,standalone为单节点模式 |
NACOS_SERVERS | nacos集群的服务器地址,格式为 ip1:port ip2:port 多个用空格隔开 |
SPRING_DATASOURCE_PLATFORM | nacos使用的数据库,只支持mysql |
MYSQL_SERVICE_HOST | mysql服务器地址 |
MYSQL_SERVICE_PORT | mysql的端口,默认为3306 |
MYSQL_SERVICE_DB_NAME | nacos配置的数据库名,我们创建mysql时配置的数据库名为nacos_config |
MYSQL_SERVICE_USER | mysql的用户名 |
MYSQL_SERVICE_PASSWORD | mysql的密码 |
MYSQL_DATABASE_NUM | mysql数据库的数量,默认为1 |
MYSQL_SERVICE_DB_PARAM | mysql连接字符串后面的参数,默认:characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useSSL=false |
JVM_XMS | jvm永久区最小大小,默认:1g |
JVM_XMX | jvm永久区最大大小,默认:1g |
JVM_XMN | jvm新生区大小,默认:512m |
我们根据上面参数创建一个configmap,执行下面代码获取创建configmap的k8s资源清单文件yaml:
kubectl create configmap nacos-deploy-config -n deploy-test \
--from-literal=mode=cluster \
--from-literal=nacos-servers='deploy-nacos-0.deploy-nacos-svc.deploy-test.svc.cluster.local:8848 deploy-nacos-1.deploy-nacos-svc.deploy-test.svc.cluster.local:8848' \
--from-literal=spring-datasource-platform=mysql \
--from-literal=mysql-service-host='deploy-mysql-0.deploy-mysql-svc.deploy-test.svc.cluster.local' \
--from-literal=mysql-service-port=3306 \
--from-literal=mysql-service-db-name=nacos_config \
--from-literal=mysql-service-user=root \
--from-literal=mysql-database-num=1 \
--from-literal=mysql-service-db-param='characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useSSL=false' \
--from-literal=jvm-xms=256m \
--from-literal=jvm-xmx=256m \
--from-literal=jvm-xmn=128m \
--dry-run=client -o yaml
注意下面这一行:
--from-literal=nacos-servers='deploy-nacos-0.deploy-nacos-svc.deploy-test.svc.cluster.local:8848 deploy-nacos-1.deploy-nacos-svc.deploy-test.svc.cluster.local:8848'
因为我们这次只部署两个节点的集群,如果你打算部署多个节点,那么你往后面加即可。同时这行命令我们也没设置数据库的密码,这是因为我们创建mysql的时候就创建了一个密码的secret,待会直接使用即可。我们看这行命令的执行结果:
发现成功创建了一个k8s的configmap资源清单文件,文件内容:
apiVersion: v1
data:
jvm-xmn: 128m
jvm-xms: 256m
jvm-xmx: 256m
mode: cluster
mysql-database-num: "1"
mysql-service-db-name: nacos_config
mysql-service-db-param: characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useSSL=false
mysql-service-host: deploy-mysql-0.deploy-mysql-svc.deploy-test.svc.cluster.local
mysql-service-port: "3306"
mysql-service-user: root
nacos-servers: deploy-nacos-0.deploy-nacos-svc.deploy-test.svc.cluster.local:8848
deploy-nacos-1.deploy-nacos-svc.deploy-test.svc.cluster.local:8848
spring-datasource-platform: mysql
kind: ConfigMap
metadata:
name: nacos-deploy-config
namespace: deploy-test
先将这个yaml保存下来以供接下来使用:
创建部署文件
部署文件内容:
apiVersion: v1
kind: Service
metadata:
name: deploy-nacos-svc
namespace: deploy-test
labels:
app: nacos
spec:
ports:
- port: 8848
name: nacos
targetPort: 8848
nodePort: 30848
selector:
app: nacos
type: NodePort
sessionAffinity: ClientIP
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: deploy-nacos
namespace: deploy-test
spec:
selector:
matchLabels:
app: nacos
serviceName: "deploy-nacos-svc"
replicas: 2
template:
metadata:
labels:
app: nacos
spec:
terminationGracePeriodSeconds: 10
containers:
- name: nacos
# 如果能拉取到dockerhub上的镜像就用这个
# image: docker.io/nacos/nacos-server:v2.0.4
# 拉取不到dockerhub上的镜像就用我推送到阿里云上的nacos官方镜像
image: registry.cn-shenzhen.aliyuncs.com/xiaohh-docker/nacos-server:v2.0.4
ports:
- containerPort: 8848
name: nacos
env: # 引用各类环境变量为nacos做配置,注意大部分引用configmap,只有数据库密码引用的创建mysql时候的secret
- name: JVM_XMN
valueFrom:
configMapKeyRef:
key: jvm-xmn
name: nacos-deploy-config
- name: JVM_XMS
valueFrom:
configMapKeyRef:
key: jvm-xms
name: nacos-deploy-config
- name: JVM_XMX
valueFrom:
configMapKeyRef:
key: jvm-xmx
name: nacos-deploy-config
- name: MODE
valueFrom:
configMapKeyRef:
key: mode
name: nacos-deploy-config
- name: MYSQL_DATABASE_NUM
valueFrom:
configMapKeyRef:
key: mysql-database-num
name: nacos-deploy-config
- name: MYSQL_SERVICE_DB_NAME
valueFrom:
configMapKeyRef:
key: mysql-service-db-name
name: nacos-deploy-config
- name: MYSQL_SERVICE_DB_PARAM
valueFrom:
configMapKeyRef:
key: mysql-service-db-param
name: nacos-deploy-config
- name: MYSQL_SERVICE_HOST
valueFrom:
configMapKeyRef:
key: mysql-service-host
name: nacos-deploy-config
- name: MYSQL_SERVICE_PASSWORD
valueFrom:
secretKeyRef:
key: mysql_root_password
name: mysql-password
- name: MYSQL_SERVICE_PORT
valueFrom:
configMapKeyRef:
key: mysql-service-port
name: nacos-deploy-config
- name: MYSQL_SERVICE_USER
valueFrom:
configMapKeyRef:
key: mysql-service-user
name: nacos-deploy-config
- name: NACOS_SERVERS
valueFrom:
configMapKeyRef:
key: nacos-servers
name: nacos-deploy-config
- name: SPRING_DATASOURCE_PLATFORM
valueFrom:
configMapKeyRef:
key: spring-datasource-platform
name: nacos-deploy-config
根据yaml资源清单文件部署nacos
根据上面步骤我们得到了完整的 deploy-nacos.yaml
文件内容:
apiVersion: v1
data:
jvm-xmn: 128m
jvm-xms: 256m
jvm-xmx: 256m
mode: cluster
mysql-database-num: "1"
mysql-service-db-name: nacos_config
mysql-service-db-param: characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useSSL=false
mysql-service-host: deploy-mysql-0.deploy-mysql-svc.deploy-test.svc.cluster.local
mysql-service-port: "3306"
mysql-service-user: root
nacos-servers: deploy-nacos-0.deploy-nacos-svc.deploy-test.svc.cluster.local:8848
deploy-nacos-1.deploy-nacos-svc.deploy-test.svc.cluster.local:8848
spring-datasource-platform: mysql
kind: ConfigMap
metadata:
name: nacos-deploy-config
namespace: deploy-test
---
apiVersion: v1
kind: Service
metadata:
name: deploy-nacos-svc
namespace: deploy-test
labels:
app: nacos
spec:
ports:
- port: 8848
name: nacos
targetPort: 8848
nodePort: 30848
selector:
app: nacos
type: NodePort
sessionAffinity: ClientIP
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: deploy-nacos
namespace: deploy-test
spec:
selector:
matchLabels:
app: nacos
serviceName: "deploy-nacos-svc"
replicas: 2
template:
metadata:
labels:
app: nacos
spec:
terminationGracePeriodSeconds: 10
containers:
- name: nacos
image: registry.cn-shenzhen.aliyuncs.com/xiaohh-docker/nacos-server:v2.0.4
ports:
- containerPort: 8848
name: nacos
env:
- name: JVM_XMN
valueFrom:
configMapKeyRef:
key: jvm-xmn
name: nacos-deploy-config
- name: JVM_XMS
valueFrom:
configMapKeyRef:
key: jvm-xms
name: nacos-deploy-config
- name: JVM_XMX
valueFrom:
configMapKeyRef:
key: jvm-xmx
name: nacos-deploy-config
- name: MODE
valueFrom:
configMapKeyRef:
key: mode
name: nacos-deploy-config
- name: MYSQL_DATABASE_NUM
valueFrom:
configMapKeyRef:
key: mysql-database-num
name: nacos-deploy-config
- name: MYSQL_SERVICE_DB_NAME
valueFrom:
configMapKeyRef:
key: mysql-service-db-name
name: nacos-deploy-config
- name: MYSQL_SERVICE_DB_PARAM
valueFrom:
configMapKeyRef:
key: mysql-service-db-param
name: nacos-deploy-config
- name: MYSQL_SERVICE_HOST
valueFrom:
configMapKeyRef:
key: mysql-service-host
name: nacos-deploy-config
- name: MYSQL_SERVICE_PASSWORD
valueFrom:
secretKeyRef:
key: mysql_root_password
name: mysql-password
- name: MYSQL_SERVICE_PORT
valueFrom:
configMapKeyRef:
key: mysql-service-port
name: nacos-deploy-config
- name: MYSQL_SERVICE_USER
valueFrom:
configMapKeyRef:
key: mysql-service-user
name: nacos-deploy-config
- name: NACOS_SERVERS
valueFrom:
configMapKeyRef:
key: nacos-servers
name: nacos-deploy-config
- name: SPRING_DATASOURCE_PLATFORM
valueFrom:
configMapKeyRef:
key: spring-datasource-platform
name: nacos-deploy-config
接下来执行这行命令开始部署:
kubectl apply -f deploy-nacos.yaml
查看执行结果:
执行这行命令查看部署结果:
kubectl get pod -o wide -n deploy-test
执行后的结果可以看到两个nacos节点部署成功:
执行这行命令查看nacos暴露的nodeport端口:
kubectl get svc -o wide -n deploy-test
可以看到端口为 30848
:
我们可以通过任何一个Kubernetes节点的IP地址加上这个端口访问nacos:
输入默认的用户名和密码 nacos/nacos
即可登陆到首页:
我们来到 集群管理->节点管理
可以看到两个节点都为up状态:
接下来我们来到 配置管理->配置列表
点击 +
新增一个配置:
我们先随便新增一个yaml配置文件:
点击下面的发布之后查看数据库:文章来源:https://www.toymoban.com/news/detail-775855.html
数据库里面已经新增了这个配置的数据。Kubernetes集群里面安装nacos集群就已经安装好了。文章来源地址https://www.toymoban.com/news/detail-775855.html
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