持续集成交付CICD：HELM 手动完成前端项目应用发布与回滚

2023-12-21 06:17:11

目录

一、实验

1.环境

2.K8S master节点部署HELM3

3.K8S master节点安装git

4. Harbor镜像确认

5. HELM 手动完成前端项目应用发布与回滚

6.代码上传到GitLab

二、问题

1.Ingress中 path 的类型有何区别

2. HELM创建项目报错

?

?

一、实验

1.环境

（1）主机

表1? 主机

主机架构版本IP备注
master1K8S master节点1.20.6192.168.204.180

jenkins slave

（从节点）

?helm3.6.0??
?git1.8.3.1??
node1K8S node节点1.20.6192.168.204.181?
node2K8S node节点1.20.6192.168.204.182?
jenkins

?jenkins主节点? ? ??

2.414.2192.168.204.15:8080

?gitlab?runner

（从节点）

?

harbor私有仓库

1.2.2192.168.204.15?
gitlabgitlab 主节点?????12.10.14192.168.204.8:82

jenkins slave

（从节点）

?sonarqube9.6192.168.204.8:9000?

2.K8S master节点部署HELM3

（1）Helm版本与K8S集群兼容

ee70de7fccd441c2866678f1b28ca9da.png

（2）查看K8S集群状态

# kubectl get node

980e994461ea419187ac8739bfd8c263.png

（3）策略

当前K8S 集群为1.20.6版本，HELM 3.6.x 版本可以兼容。

所以选择3.6.0版本。

（4）部署


1）安装 helm 
//下载二进制 Helm client 安装包
helm-v3.6.0-linux-amd64.tar.gz
 
tar -zxvf helm-v3.6.0-linux-amd64.tar.gz
mv linux-amd64/helm /usr/local/bin/helm
helm version
 
//命令补全
source <(helm completion bash)
 
2）使用 helm 安装 Chart
//添加常用的 chart 仓库，
helm repo add bitnami https://charts.bitnami.com/bitnami
helm repo add aliyun https://kubernetes.oss-cn-hangzhou.aliyuncs.com/charts
helm repo add incubator https://charts.helm.sh/incubator

3) 更新 charts 列表
helm repo update
helm repo list

安装

11241a72251a4e6e87f5ce7f5de14783.png

使用 helm 安装 Chart

ff517b7d44b541dd8a9cf3ee97d7795c.png6f3e168cb7244272ac568207c80ef910.png

?

3.K8S master节点安装git

(1) 安装

1）安装
# yum install -y git

2）查看版本
# git --version

3）全局设置（初始邮箱为admin@example.com）
# git config --global user.name "root"
# git config --global user.email "594372682@qq.com"

安装
b640f096c0fd45a6b98c99952e76a47f.png5f7570d8f9324ebda524d8bb8d38ef26.png

查看版本

9b8f10e92ebe4249bdc147f7432d85f6.png

全局设置
da065a4627534b6494dd1a898ee55348.png

?

4. Harbor镜像确认

（1）查看前端项目镜像

8b099f0c34414d53932441abc12ff585.png

（2）确认如下镜像作为helm项目使用的镜像

 192.168.204.15/devops03/devops03-devops-ui:RELEASE-1.1.6

?

5. HELM 手动完成前端项目应用发布与回滚

（1）构建项目

# helm create devops03-devops-ui

525e34555c1a475ebab0db8ab6798c2c.png

（2）安装tree

# yum install -y tree

554e30074aab4cd5a16030d96383c319.pngb86ba730399d453490cbb6a25b230898.png

(3) 查看目录

# tree

222615993b6d405eb2e004127348ade1.png

（4）修改values.yaml?

# vim values.yaml

指定镜像仓库、镜像版本为RELEASE-1.1.6、开启ingress


  1 # Default values for devops03-devops-ui.
  2 # This is a YAML-formatted file.
  3 # Declare variables to be passed into your templates.
  4 
  5 replicaCount: 2
  6 
  7 image:
  8   repository: 192.168.204.15/devops03/devops03-devops-ui
  9   pullPolicy: IfNotPresent
 10   # Overrides the image tag whose default is the chart appVersion.
 11   tag: "RELEASE-1.1.6"
 12 
 13 imagePullSecrets: []
 14 nameOverride: ""
 15 fullnameOverride: ""
 16 
 17 serviceAccount:
 18   # Specifies whether a service account should be created
 19   create: true
 20   # Annotations to add to the service account
 21   annotations: {}
 22   # The name of the service account to use.
 23   # If not set and create is true, a name is generated using the fullname template
 24   name: ""
 25 
 26 podAnnotations: {}
 27 
 28 podSecurityContext: {}
 29   # fsGroup: 2000
 30 
 31 securityContext: {}
 32   # capabilities:
 33   #   drop:
 34   #   - ALL
 35   # readOnlyRootFilesystem: true
 36   # runAsNonRoot: true
 37   # runAsUser: 1000
 38 
 39 service:
 40   type: ClusterIP
 41   port: 80
 42 
 43 ingress:
 44   enabled: true
 45   className: ""
 46   annotations:
 47     kubernetes.io/ingress.class: nginx
 48     # kubernetes.io/tls-acme: "true"
 49   hosts:
 50     - host: devops03-devops-ui.devops.com
 51       paths:
 52         - path: /
 53           pathType: ImplementationSpecific
 54   tls: []
 55   #  - secretName: chart-example-tls
 56   #    hosts:
 57   #      - chart-example.local
 58 
 59 resources: {}
 60   # We usually recommend not to specify default resources and to leave this as a conscious
 61   # choice for the user. This also increases chances charts run on environments with little
 62   # resources, such as Minikube. If you do want to specify resources, uncomment the following
 63   # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
 64   # limits:
 65   #   cpu: 100m
 66   #   memory: 128Mi
 67   # requests:
 68   #   cpu: 100m
 69   #   memory: 128Mi
 70 
 71 autoscaling:
 72   enabled: false
 73   minReplicas: 1
 74   maxReplicas: 100
 75   targetCPUUtilizationPercentage: 80
 76   # targetMemoryUtilizationPercentage: 80
 77 
 78 nodeSelector: {}
 79 
 80 tolerations: []
 81 
 82 affinity: {}

（5）?另开一个终端用watch命令观察pod变化

# watch -n 1 "kubectl get pod -n devops03"

ba807433ad4d4e6595b7f743a006a154.png

1c4229ba19854f56b8274ae582ebe903.png

（6）外部测试访问（当前版本为1.1.6）

# curl http://devops03-devops-ui.devops.com:31291

bf9081c1d872440eb5ee2cf888f5a80f.png

?（7）删除已有命名空间

# kubectl delete ns devops03

f7be2b68bf7846b98f12ee39433ff6ee.png

（8）观察pod变化b79da2332628480da53ed7685b52abf9.png

7dffc5a376034fdc9e57b4b4176bbc01.png

（9）重新创建命名空间并查看资源

# kubectl create ns devops03

# kubectl get all -n devops03

45ab26810dc74e189d56c53d6177c3df.png

bdd460b360864dedbb7d37228427483c.png

（7）运行项目

# helm install devops03-devops-ui -n devops03 devops03-devops-ui/

296b935623f14c7c93a3958f3b397e2d.png

（8）观察pod变化

4c8db84159e74520a7f19e056ab36bfa.png

af629e3adff145968197b6dad2b4b324.png

817fb95075cc4ccab5d86d8bc42bc25e.png

（9）外部测试访问（当前版本为1.1.6）

# curl http://devops03-devops-ui.devops.com:31291

4cfd3cf26b964d1186e0a31bac74f35d.png

（10）修改values.yaml?

# vim values.yaml

指定镜像仓库、镜像版本为RELEASE-1.1.5、开启ingress


  1 # Default values for devops03-devops-ui.
  2 # This is a YAML-formatted file.
  3 # Declare variables to be passed into your templates.
  4 
  5 replicaCount: 2
  6 
  7 image:
  8   repository: 192.168.204.15/devops03/devops03-devops-ui
  9   pullPolicy: IfNotPresent
 10   # Overrides the image tag whose default is the chart appVersion.
 11   tag: "RELEASE-1.1.6"
 12 
 13 imagePullSecrets: []
 14 nameOverride: ""
 15 fullnameOverride: ""
 16 
 17 serviceAccount:
 18   # Specifies whether a service account should be created
 19   create: true
 20   # Annotations to add to the service account
 21   annotations: {}
 22   # The name of the service account to use.
 23   # If not set and create is true, a name is generated using the fullname template
 24   name: ""
 25 
 26 podAnnotations: {}
 27 
 28 podSecurityContext: {}
 29   # fsGroup: 2000
 30 
 31 securityContext: {}
 32   # capabilities:
 33   #   drop:
 34   #   - ALL
 35   # readOnlyRootFilesystem: true
 36   # runAsNonRoot: true
 37   # runAsUser: 1000
 38 
 39 service:
 40   type: ClusterIP
 41   port: 80
 42 
 43 ingress:
 44   enabled: true
 45   className: ""
 46   annotations:
 47     kubernetes.io/ingress.class: nginx
 48     # kubernetes.io/tls-acme: "true"
 49   hosts:
 50     - host: devops03-devops-ui.devops.com
 51       paths:
 52         - path: /
 53           pathType: ImplementationSpecific
 54   tls: []
 55   #  - secretName: chart-example-tls
 56   #    hosts:
 57   #      - chart-example.local
 58 
 59 resources: {}
 60   # We usually recommend not to specify default resources and to leave this as a conscious
 61   # choice for the user. This also increases chances charts run on environments with little
 62   # resources, such as Minikube. If you do want to specify resources, uncomment the following
 63   # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
 64   # limits:
 65   #   cpu: 100m
 66   #   memory: 128Mi
 67   # requests:
 68   #   cpu: 100m
 69   #   memory: 128Mi
 70 
 71 autoscaling:
 72   enabled: false
 73   minReplicas: 1
 74   maxReplicas: 100
 75   targetCPUUtilizationPercentage: 80
 76   # targetMemoryUtilizationPercentage: 80
 77 
 78 nodeSelector: {}
 79 
 80 tolerations: []
 81 
 82 affinity: {}

修改前：

b9e27d1af0c341edbd551a24c5fb9c93.png

修改后：

9456ec598178466d8948f267c713cd3f.png

（11）更新项目

# helm upgrade devops03-devops-ui -n devops03 devops03-devops-ui/

0533c2a2bd0146958f0d12458fba6174.png

（12）观察pod变化

584ac02b96484ef38fc0cfbc072699bf.png

1f1423073d3b4bbd9383abba2aebea6a.png

a1fa364efb3f4c03bf248dde6b19def6.png

22529ac20a1846e1be91f06604b7b86a.png

5996e347953043f98f36430f91c16a08.png

（13）外部测试访问（当前版本为1.1.5）

# curl http://devops03-devops-ui.devops.com:31291

0a2b649d311944a98e132a90a15cb3b8.png

（14）查看历史版本

# helm history devops03-devops-ui -n devops03

a619675ed16c44db949de1fff4d0ad0d.png

（15）回滚指定版本

# helm rollback devops03-devops-ui 1 -n devops03

7712da6b6b6348fb92e17adf1a7ab95c.png

（16）观察pod变化

d9937cabf85a4a4bad75a3186a765602.png

80ae516b79b041e8b5eb3cbccdef903e.png

5b3b0dcc47554391a83f559d7e35f517.png

d6df60a242be4a64b29c0752ff626550.png

d23125e09397406d80c1b94788a7a0a0.png

（17）外部测试访问（当前版本为1.1.6）

# curl http://devops03-devops-ui.devops.com:31291

acb0d800a34147da8ab6ebe349628b51.png

?

6.代码上传到GitLab

(1)?将项目克隆到服务器

# git clone http://192.168.204.8:82/devops03/devops03-helm-service.git

99ddaf60094141b589edb21517b20cc2.png

(2)切换目录,移动HELM项目

# mv devops03-devops-ui/ devops03-helm-service/

7264242ea34749c1b5615edc7275732b.png

（3）将代码上传到工作区

# git add devops03-devops-ui/

259862b802b745a48f61fe7b305ed2af.png

（4）提交代码申明

# git commit -m "devops03 app"

9b53b020ede7409fba4e8d41a6f3baa5.png

（5）?将代码推送到GitLab

# git push origin master

dd4fa580e2974c0a949154671ef4725b.png

（6）GitLab查看项目

b991229c3b37407c8d252bc6009d2cfb.png

（7）目录结构

4a1ad908ba4c4b14a60b8707f92a696d.png

?

二、问题

1.Ingress中 path 的类型有何区别

（1）区别

exact: 精确匹配路径。如 path: /foo,只匹配请求路径与之完全相同的 /foo。

prefix: 前缀匹配路径。如 path: /foo,匹配请求路径以 /foo 开始的所有路径,如 /foo、/foo/bar 等。

ImplementationSpecific: 特定 Ingress controller 的匹配方式。如 Nginx Ingress controller 忽略路径类型,作为前缀匹配路径处理。

2. HELM创建项目报错

（1）报错

ae45ad93cf904bb2b9a78113c5500a41.png

（2）原因分析

格式转换错误。

（3）解决方法

修改配置文件。

修改前：

34854e7121684042a168205fed49807b.png

修改后：

a7e02f164e274e6c878b73e9e7a5604f.png

成功：

cc61d48bd8b1418ab8c86066b4c724eb.png

?

?

文章来源:https://blog.csdn.net/cronaldo91/article/details/135098756
本文来自互联网用户投稿，该文观点仅代表作者本人，不代表本站立场。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。