Kubernetes集群golang项目上云部署¶
一、项目情况¶
本次上线部署的是一个基于Golang开发的百万并发的IM系统，提供平台用户基本聊天及群聊功能等。
二、项目源码¶
[root@harbor ginchat-v1.0]# ls
asset config docs go.mod go.sum index.html main.go models router service test utils views
前端：
index.html
views
asset
go源码：
go.mod
go.sum
main.go等
配置目录：
config/app.yaml
注意修改：mysql数据库地址及redis连接地址
项目数据库文件
]# ls sql
init_ginchat.sql
三、项目部署第三方服务¶
3.1 数据库 MySQL¶
创建命名空间资源清单文件
[root@nginx 05_go_project]# cat 01_namespace.yaml
apiVersion: v1
kind: Namespace
metadata:
name: ginchat
应用资源清单文件
# kubectl apply -f http://yaml.kubemsb.com/04_python_project/01_namespace.yaml
创建部署MySQL数据库管理系统资源清单文件
[root@nginx 05_go_project]# cat 02_mysql.yaml
apiVersion: v1
kind: Service
metadata:
name: ginchatmysql
namespace: ginchat
spec:
ports:
- port: 3306
name: mysql
clusterIP: None
selector:
app: mysqlginchat
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: ginchatdb
namespace: ginchat
spec:
selector:
matchLabels:
app: mysqlginchat
serviceName: "ginchatmysql"
template:
metadata:
labels:
app: mysqlginchat
spec:
containers:
- name: mysql
image: mysql:5.7
env:
- name: MYSQL_ROOT_PASSWORD
value: "123456"
- name: MYSQL_DATABASE
value: ginchat
ports:
- containerPort: 3306
volumeMounts:
- mountPath: "/var/lib/mysql"
name: mysql-ginchat
volumeClaimTemplates:
- metadata:
name: mysql-ginchat
spec:
accessModes: ["ReadWriteMany"]
storageClassName: "nfs-client"
resources:
requests:
storage: 1Gi
应用资源清单文件
# kubectl apply -f http://yaml.kubemsb.com/04_python_project/02_mysql.yaml
查看数据库对应的pod
# kubectl get pods -n ginchat
NAME READY STATUS RESTARTS AGE
ginchatdb-0 1/1 Running 0 9m
导入项目数据
# kubectl exec -it ginchatdb-0 -n ginchat -- mysql -uroot -p123456 ginchat < init_ginchat.sql
检查持久存储
# ls ginchat-mysql-ginchat-ginchatdb-0-pvc-6a01f107-e29a-462a-a24a-64aeb59f6432/
auto.cnf ca.pem client-key.pem ib_buffer_pool ib_logfile0 ibtmp1 performance_schema public_key.pem server-key.pem
ca-key.pem client-cert.pem ginchat ibdata1 ib_logfile1 mysql private_key.pem server-cert.pem sys
3.2 Redis¶
# mkdir -p /opt/redis/conf
# touch /opt/redis/conf/redis.conf
# docker run -p 6379:6379 --name ginchatredis -v /opt/redis/data:/data -v /opt/redis/conf:/etc/redis -d redis redis-server /etc/redis/redis.conf
四、源码编译¶
4.1 项目源码¶
# ls
asset config docs go.mod go.sum index.html main.go models router service test utils views
4.2 源码编译环境准备¶
# wget https://storage.googleapis.com/golang/getgo/installer_linux
# chmod +x installer_linux
# ./installer_linux
# source /root/.bash_profile
# go version
go version go1.18.3 linux/amd64
4.3 源码编译¶
[root@harbor ginchat-v1.0]# mkdir bin
[root@harbor ginchat-v1.0]# ls
asset bin config docs go.mod go.sum index.html main.go models router service test utils views
[root@harbor ginchat-v1.0]# go get && go build -o bin/ginchatd
[root@harbor ginchat-v1.0]# ls bin
ginchatd
五、项目容器镜像制作¶
5.1 查看制品文件¶
把源码生成的制品文件及前端文件复制到一个新的目录中，内容如下：
[root@harbor ~]## ls ginchat-v1.0/
asset config ginchatd index.html views
5.2 修改配置文件¶
[root@harbor ~]# vim ginchat-v1.0/config/app.yml
mysql:
dns: root:123456@tcp(ginchatdb-0.ginchatmysql.ginchat.svc.cluster.local:3306)/ginchat?charset=utf8mb4&parseTime=True&loc=Local
redis:
addr: "192.168.10.213:6379"
password: ""
DB: 0
poolSize: 30
minIdleConn: 30
oos:
Endpoint: "oss-cn-hangzhou.aliyuncs.com"
AccessKeyId: "LTAI5tNCXPJwS3MstKoKgixh"
AccessKeySecret: "YhHE8OyCMsqfjwOnxQ1oO7paYlDjVH"
Bucket : "ginchat"
timeout:
DelayHeartbeat: 3 #延迟心跳时间 单位秒
HeartbeatHz: 30 #每隔多少秒心跳时间
HeartbeatMaxTime: 30000 #最大心跳时间 ，超过此就下线
RedisOnlineTime: 4 #缓存的在线用户时长 单位H
5.3 把制品文件打包¶
[root@harbor ~]# tar cvzf ginchat.tgz ginchat-v1.0
5.4 制作容器镜像¶
[root@harbor ~]# mkdir goginchatproject
[root@harbor goginchatproject]# vim Dockerfile
FROM centos:centos7
ADD ./ginchat.tgz /
WORKDIR /ginchat-v1.0
RUN chmod +x /ginchat-v1.0/ginchatd
EXPOSE 8081
CMD /ginchat-v1.0/ginchatd
[root@harbor ~]# ls goginchatproject/
Dockerfile ginchat.tgz
[root@harbor goginchatproject]# docker build -t www.kubemsb.com/library/ginchat:v1 .
[root@harbor goginchatproject]# docker push www.kubemsb.com/library/ginchat:v1
六、项目部署资源清单文件编写¶
6.1 deployment资源清单文件¶
[root@nginx 05_go_project]# cat 04_deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: ginchat
namespace: ginchat
spec:
replicas: 1
selector:
matchLabels:
project: ginchat
app: ginchat-demo
template:
metadata:
labels:
project: ginchat
app: ginchat-demo
spec:
imagePullSecrets:
- name: harborreg #认证信息
containers:
- name: ginchat
image: www.kubemsb.com/library/ginchat:v2 #镜像
imagePullPolicy: Always
ports:
- containerPort: 8081
name: web
protocol: TCP
resources:
requests:
cpu: 0.5
memory: 1Gi
limits:
cpu: 1
memory: 2Gi
livenessProbe:
httpGet:
path: /
port: 8081
initialDelaySeconds: 30
timeoutSeconds: 20
readinessProbe:
httpGet:
path: /
port: 8081
initialDelaySeconds: 30
timeoutSeconds: 20
6.2 service资源清单文件¶
[root@nginx 05_go_project]# cat 05_service.yaml
apiVersion: v1
kind: Service
metadata:
name: ginchatsvc
namespace: ginchat
spec:
selector:
project: ginchat
app: ginchat-demo
ports:
- name: web
port: 80
targetPort: 8081
6.3 ingress对象资源清单文件¶
[root@nginx 05_go_project]# cat 06_ingress.yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: ginchatingress
namespace: ginchat
annotations:
ingressclass.kubernetes.io/is-default-class: "true"
kubernetes.io/ingress.class: nginx
spec:
rules:
- host: ginchat.kubemsb.com
http:
paths:
- pathType: Prefix
path: /
backend:
service:
name: ginchatsvc
port:
number: 80
七、项目部署¶
[root@master01 ~]# kubectl apply -f http://yaml.kubemsb.com/05_go_project/04_deployment.yaml
[root@master01 ~]# kubectl apply -f http://yaml.kubemsb.com/05_go_project/05_service.yaml
[root@master01 ~]# kubectl apply -f http://yaml.kubemsb.com/05_go_project/06_ingress.yaml
八、项目访问¶
[root@master01 ~]# kubectl get pods -n ginchat
NAME READY STATUS RESTARTS AGE
ginchat-5558d849c5-cq9qq 1/1 Running 0 15m
ginchatdb-0 1/1 Running 0 10m
