一、安装 Argo CD

• k8s版本是v1.19.1

使用以下命令在 argocd 命名空间部署 Argo CD。

# 创建命名空间
kubectl create namespace argocd 
# 部署 argo cd
wget https://raw.githubusercontent.com/argoproj/argo-cd/v2.4.9/manifests/ha/install.yaml

kubectl apply -n argocd -f install.yaml
# 或者 kubectl create -n argocd -f install.yaml

• 卸载argocd

kubectl delete -f install.yaml -n argocd

安装完成后，验证见下：

• 1、Pod

[admin@jenkins]$ kubectl -n argocd get pod
NAME                                                READY   STATUS    RESTARTS   AGE
argocd-application-controller-0                     1/1     Running   0          26m
argocd-applicationset-controller-68b9bdbd8b-ld6cf   1/1     Running   0          26m
argocd-dex-server-6cff7fb675-l94r4                  1/1     Running   0          26m
argocd-notifications-controller-6dbcbc6849-tr2jb    1/1     Running   0          26m
argocd-redis-599b855497-q5hft                       1/1     Running   0          26m
argocd-repo-server-548b5f4c9b-hw2x4                 1/1     Running   0          26m
argocd-server-754cbf9fd7-m2tkc                      1/1     Running   0          26m

• 2、查看admin用户的密码

xjABvQ9kFSS3DerW

[admin@jenkins]$ kubectl -n argocd get secret \
 argocd-initial-admin-secret \
 -o jsonpath="{.data.password}" | base64 -d

xjABvQ9kFSS3DerW

二、发布 Argo CD 服务

默认情况下， Argo CD 服务不对外暴露服务，可以通过 LoadBalancer 或者 NodePort 类型的 Service、Ingress、Kubectl 端口转发等方式将 Argo CD 服务发布到 Kubernetes 集群外部。

这里使用以下命令通过 NodePort 服务的方式暴露 Argo CD 到集群外部。

kubectl patch svc argocd-server -n argocd -p '{"spec": {"type": "NodePort"}}'

因为我没有使用Ingress的方式暴露访问域名，是使用IP+PORT的方式暴露访问地址。
可以看到，argocd-server的类型已经是NodePort了，它生成了一个随机端口30984。所以argocd的访问地址是：https://192.168.80.180:30984/ （192.168.80.180是node节点的ip地址）

[admin@jenkins]$ kubectl get svc -n argocd
NAME                                      TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                      AGE
argocd-applicationset-controller          ClusterIP   10.108.149.65    <none>        7000/TCP,8080/TCP            7d20h
argocd-dex-server                         ClusterIP   10.96.208.150    <none>        5556/TCP,5557/TCP,5558/TCP   7d20h
argocd-metrics                            ClusterIP   10.99.225.44     <none>        8082/TCP                     7d20h
argocd-notifications-controller-metrics   ClusterIP   10.97.136.140    <none>        9001/TCP                     7d20h
argocd-redis                              ClusterIP   10.99.13.121     <none>        6379/TCP                     7d20h
argocd-repo-server                        ClusterIP   10.97.72.137     <none>        8081/TCP,8084/TCP            7d20h
argocd-server                             NodePort    10.111.136.78    <none>        80:30984/TCP,443:30348/TCP   7d20h
argocd-server-metrics                     ClusterIP   10.106.102.243   <none>        8083/TCP                     7d20h

三、对接LDAP

• 1、编写ldap-patch-dex.yaml

[admin@jenkins]$ vi ldap-patch-dex.yaml
# Please edit the object below. Lines beginning with a '#' will be ignored,
# and an empty file will abort the edit. If an error occurs while saving this file will be
# reopened with the relevant failures.
#
apiVersion: v1
data:
  dex.config: |-
    connectors:
    - type: ldap
      name: ..................
      id: ldap
      config:
        # Ldap server address
        host: 192.168.5.16:389
        insecureNoSSL: true
        insecureSkipVerify: true
        # Variable name stores ldap bindDN in argocd-secret
        bindDN: "$dex.ldap.bindDN"
        # Variable name stores ldap bind password in argocd-secret
        bindPW: "$dex.ldap.bindPW"
        usernamePrompt: .........
        # Ldap user serch attributes
        userSearch:
          baseDN: "ou=people,dc=xxx,dc=com"
          filter: "(objectClass=person)"
          username: uid
          idAttr: uid
          emailAttr: mail
          nameAttr: cn
        # Ldap group serch attributes
        groupSearch:
          baseDN: "ou=argocd,ou=group,dc=xxx,dc=com"
          filter: "(objectClass=groupOfUniqueNames)"
          userAttr: DN
          groupAttr: uniqueMember
          nameAttr: cn
  # 注意：这个是argocd的访问地址，必须配置，否则会导致不会跳转.
  url: https://192.168.80.180:30984

• 2、configMap

[admin@jenkins]$ kubectl -n argocd patch configmaps argocd-cm --patch "$(cat ldap-patch-dex.yaml)"

• 3、修改configMap

kubectl edit cm argocd-cm -n argocd

• 3、secret

# bindDN是cn=admin,dc=xxx,dc=com
kubectl -n argocd patch secrets argocd-secret --patch "{\"data\":{\"dex.ldap.bindDN\":\"$(echo cn=admin,dc=xxx,dc=com | base64 -w 0)\"}}"

# 密码bindPW是123456
kubectl -n argocd patch secrets argocd-secret --patch "{\"data\":{\"dex.ldap.bindPW\":\"$(echo 123456 | base64 -w 0)\"}}"

• 4、查看日志

kubectl logs -f -n argocd argocd-dex-server-7689686bd9-4srkc

time="2023-06-27T07:10:00Z" level=info msg="ArgoCD Dex Server is starting" built="2023-06-16T14:35:08Z" commit=a2430af1c356b283e5e3fc5bde1f5e2b5199f258 namespace=argocd version=v2.7.5+a2430af.dirty
time="2023-06-27T07:10:00Z" level=info msg="Generating self-signed TLS certificate for this session"
time="2023-06-27T07:10:00Z" level=info msg="Starting configmap/secret informers"
time="2023-06-27T07:10:00Z" level=info msg="Configmap/secret informer synced"
time="2023-06-27T07:10:00Z" level=info msg="0xc0006ac600 subscribed to settings updates"
time="2023-06-27T07:10:00Z" level=info msg="dex is not configured"
time="2023-06-27T07:18:35Z" level=info msg="Notifying 1 settings subscribers: [0xc0006ac600]"
time="2023-06-27T07:18:35Z" level=info msg="dex config modified. restarting dex"
time="2023-06-27T07:18:35Z" level=info msg="Dex Version: v2.36.0-dirty, Go Version: go1.20.2, Go OS/ARCH: linux amd64"
time="2023-06-27T07:18:35Z" level=info msg="config issuer: https://192.168.80.180:30984/api/dex"
time="2023-06-27T07:18:35Z" level=info msg="config storage: memory"
time="2023-06-27T07:18:35Z" level=info msg="config static client: Argo CD"
time="2023-06-27T07:18:35Z" level=info msg="config static client: Argo CD CLI"
time="2023-06-27T07:18:35Z" level=info msg="config connector: ldap"
time="2023-06-27T07:18:35Z" level=info msg="config skipping approval screen"
time="2023-06-27T07:18:35Z" level=info msg="config refresh tokens rotation enabled: true"
time="2023-06-27T07:18:35Z" level=warning msg="Deprecated: LDAP: use groupSearch.userMatchers option instead of \"userAttr/groupAttr\" fields."
time="2023-06-27T07:18:35Z" level=info msg="keys expired, rotating"
time="2023-06-27T07:18:36Z" level=info msg="keys rotated, next rotation: 2023-06-27 13:18:36.026673153 +0000 UTC"
time="2023-06-27T07:18:36Z" level=info msg="listening (telemetry) on 0.0.0.0:5558"
time="2023-06-27T07:18:36Z" level=info msg="listening (https) on 0.0.0.0:5556"
time="2023-06-27T07:18:36Z" level=info msg="listening (grpc) on 0.0.0.0:5557"
time="2023-06-27T08:49:52Z" level=info msg="performing ldap search ou=people,dc=xxx,dc=com sub (&(objectClass=person)(uid=150xxxx9916))"
time="2023-06-27T08:49:52Z" level=info msg="username \"150xxxx9916\" mapped to entry cn=150xxxx9916,ou=java-platform,ou=people,dc=xxx,dc=com"
time="2023-06-27T08:49:52Z" level=info msg="performing ldap search ou=argocd,ou=group,dc=xxx,dc=com sub (&(objectClass=groupOfUniqueNames)(uniqueMember=cn=150xxxx9916,ou=java-platform,ou=people,dc=xxx,dc=com))"
time="2023-06-27T08:49:52Z" level=info msg="login successful: connector \"ldap\", username=\"150xxxx9916\", preferred_username=\"\", email=\"xxx@xxx.com\", groups=[\"argocd-admin\"]"

• 5、删除POD，以重启，让上面的ldap配置生效。

kubectl delete pod -n argocd argocd-server-7bf49f8b5-ksq6l
kubectl delete pod -n argocd argocd-dex-server-7689686bd9-xwxf8

四、登录测试

重启后，这里会多一个登录入口，支持LDAP。

输入用户名和密码，登录系统~

但是，不同的浏览器对这个界面的样式展示会有差异，下面是Safari浏览器。

五、Ldap设置

新建两个组，argocd-admin(管理员)，argocd-users(普通用户)

六、argocd的权限

参考其官方网址：https://argo-cd.readthedocs.io/en/stable/operator-manual/rbac/

1、自定义角色

kubectl edit configmaps -n argocd argocd-rbac-cm

• 创建一个devops角色，具备某一部分的权限。

apiVersion: v1
kind: ConfigMap
metadata:
  name: argocd-rbac-cm
  namespace: argocd
data:
  policy.csv: |
  # 先定义角色及对应的权限项列表
    # 角色leader-admin，和默认的角色admin一样
    p, role:leader-admin, *, *, *, allow
    # 配置应用同步权限
    p, role:devops, applications, sync, *, allow    
    # 配置应用回滚权限
    p, role:devops, applications, update, *, allow  
    # 配置查看应用日志权限
    p, role:devops, logs, get, *, allow    
    # 配置用户可以进入容器终端进行操作的权限  
    p, role:devops, exec, create, */*, allow   
    
 # 下面是对组进行赋予角色   
    # ldap组argocd-admin赋予角色leader-admin
    g, argocd-admin, role:leader-admin
    # ldap组argocd-users赋予角色devops
    g, argocd-users, role:devops
    
# 默认的权限包含role:readonly  
  policy.default: role:readonly

重启Pod: argocd-server、argocd-dex-server。

2、默认角色对应的权限

默认，系统已创建好了两个角色，见下：

• role:admin
• role:readonly

详细的权限项见下，官网链接是https://github.com/argoproj/argo-cd/blob/master/assets/builtin-policy.csv

# Built-in policy which defines two roles: role:readonly and role:admin,
# and additionally assigns the admin user to the role:admin role.
# There are two policy formats:
# 1. Applications, logs, and exec (which belong to a project):
# p, <user/group>, <resource>, <action>, <project>/<object>
# 2. All other resources:
# p, <user/group>, <resource>, <action>, <object>

p, role:readonly, applications, get, */*, allow
p, role:readonly, certificates, get, *, allow
p, role:readonly, clusters, get, *, allow
p, role:readonly, repositories, get, *, allow
p, role:readonly, projects, get, *, allow
p, role:readonly, accounts, get, *, allow
p, role:readonly, gpgkeys, get, *, allow
p, role:readonly, logs, get, */*, allow

p, role:admin, applications, create, */*, allow
p, role:admin, applications, update, */*, allow
p, role:admin, applications, delete, */*, allow
p, role:admin, applications, sync, */*, allow
p, role:admin, applications, override, */*, allow
p, role:admin, applications, action/*, */*, allow
p, role:admin, applicationsets, get, */*, allow
p, role:admin, applicationsets, create, */*, allow
p, role:admin, applicationsets, update, */*, allow
p, role:admin, applicationsets, delete, */*, allow
p, role:admin, certificates, create, *, allow
p, role:admin, certificates, update, *, allow
p, role:admin, certificates, delete, *, allow
p, role:admin, clusters, create, *, allow
p, role:admin, clusters, update, *, allow
p, role:admin, clusters, delete, *, allow
p, role:admin, repositories, create, *, allow
p, role:admin, repositories, update, *, allow
p, role:admin, repositories, delete, *, allow
p, role:admin, projects, create, *, allow
p, role:admin, projects, update, *, allow
p, role:admin, projects, delete, *, allow
p, role:admin, accounts, update, *, allow
p, role:admin, gpgkeys, create, *, allow
p, role:admin, gpgkeys, delete, *, allow
p, role:admin, exec, create, */*, allow

# 角色role:admin追加角色role:readonly，相当于取权限的并集了。
g, role:admin, role:readonly
# 用户admin赋予角色role:admin
g, admin, role:admin

3、权限的补充说明

你可以使用正则表达式像下面这样~

# 权限仅限于项目dev-project
p, dev-group, applicationsets, *, dev-project/*, allow

关于resource和action到底有哪些：

Resources: clusters, projects, applications, applicationsets, repositories, certificates, accounts, gpgkeys, logs, exec, extensions
Actions: get, create, update, delete, sync, override,action/<group/kind/action-name>

注意：后面的Actions(sync, override, and action/<group/kind/action-name>) 只适用于 resource-applications。

4、argocd-users组下的用户登录argocd

测试验证project的create权限，提示用户不能创建，缺少权限。

七、出现过的问题

1、argocd-repo-server安装失败

time="2023-07-04T07:49:59Z" level=info msg="ArgoCD Repository Server is starting" built="2023-06-20T20:51:13Z" commit=00c914a948d9e8ad99be8bd82a368fbdeba12f88 port=8081 version=v2.7.6+00c914a.dirty
time="2023-07-04T07:49:59Z" level=info msg="Generating self-signed TLS certificate for this session"
time="2023-07-04T07:49:59Z" level=info msg="Initializing GnuPG keyring at /app/config/gpg/keys"
time="2023-07-04T07:49:59Z" level=info msg="gpg --no-permission-warning --logger-fd 1 --batch --gen-key /tmp/gpg-key-recipe2861856502" dir= execID=cb51c
time="2023-07-04T07:50:05Z" level=error msg="`gpg --no-permission-warning --logger-fd 1 --batch --gen-key /tmp/gpg-key-recipe2861856502` failed exit status 2" execID=cb51c
time="2023-07-04T07:50:05Z" level=info msg=Trace args="[gpg --no-permission-warning --logger-fd 1 --batch --gen-key /tmp/gpg-key-recipe2861856502]" dir= operation_name="exec gpg" time_ms=6049.890974
time="2023-07-04T07:50:05Z" level=fatal msg="`gpg --no-permission-warning --logger-fd 1 --batch --gen-key /tmp/gpg-key-recipe2861856502` failed exit status 2"

• 目前的解决办法：降低argocd的版本号