java - Kubernetes Continuous Deploy插件出现问题

Question

使用Kubernetes Continuous Deploy插件将Kubernetes与Jenkins集成时，出现错误。
该插件在Jenkins 2.190.3版之前都可以使用，但是在升级jenkins之后，它开始出现以下错误。
下面的错误看起来像Yaml文件的问题，但是当我手动执行时，yaml文件工作正常。
即使是我也无法降级kubernetes版本。

Jenkins Version : 2.235.2
Kubernetes Continuous Deploy Plugin : 2.3.0
13:19:19 Starting Kubernetes deployment
13:19:19 Loading configuration: /var/jenkins_home/workspace/bom_sso/bom_rs_deployment.yaml
13:19:19 ERROR: ERROR: Can't construct a java object for tag:yaml.org,2002:io.kubernetes.client.openapi.models.V1Deployment; exception=Class not found: io.kubernetes.client.openapi.models.V1Deployment
13:19:19 in 'reader', line 1, column 1:
13:19:19 apiVersion: apps/v1
13:19:19 ^
13:19:19
13:19:19 hudson.remoting.ProxyException: Can't construct a java object for tag:yaml.org,2002:io.kubernetes.client.openapi.models.V1Deployment; exception=Class not found: io.kubernetes.client.openapi.models.V1Deployment
13:19:19 in 'reader', line 1, column 1:
13:19:19 apiVersion: apps/v1
13:19:19 ^
13:19:19
13:19:19 at org.yaml.snakeyaml.constructor.Constructor$ConstructYamlObject.construct(Constructor.java:336)
13:19:19 at org.yaml.snakeyaml.constructor.BaseConstructor.constructObjectNoCheck(BaseConstructor.java:230)

谢谢，

Answer 1

您描述的问题正在ERROR: ERROR: java.lang.RuntimeException: io.kubernetes.client.openapi.ApiException: Not Found #122 github中讨论，但仍未解决。
这对于使用Jenkins版本的每个人都是非常实际的:2.235.1 +，不确定2.190.3
尚无修复程序，但是有1 workaround，也许会帮助您
我在运行Kubernetes v1.18.3时遇到相同的问题。我正在运行Jenkins v2.235.1，并且我所有的插件都是最新的。

The workaround I've found for now is to downgrade Jackson 2 API to v2.10.3 and to downgrade Snakeyaml API to v1.26.2. If those 2 plugins are updated to their respective latest versions, the error message comes back.

In order to force downgrade those 2 plugins, you can manually delete them from the plugins folder and upload the HPI files directly to Jenkins. Make sure you upload the correct versions as listed above.

This is an ugly workaround, by no means this should be considered a "fix".

降级插件版本

jackson 2 API v2.10.0，
Kubernetes v1.21.3，
Kubernetes客户端API v4.6.3-1，
Kubernetes Continuous Deploy v2.1.2，
Kubernetes凭证v0.5.0
2)检查DNS是否正常工作(非常重要)
2a)修改设置，根据需要自定义

kubectl edit cm coredns -n kube-system
apiVersion: v1
data:
  Corefile: |
    eureka cluster.local:53 {
        errors
        health {
           lameduck 5s
        }
        ready
        kubernetes cluster.local in-addr.arpa ip6.arpa {
           pods insecure
           fallthrough in-addr.arpa ip6.arpa
           ttl 30
        }
        prometheus :9153
        forward . /etc/resolv.conf
        cache 30
        loop
        reload
        loadbalance
    }
    .:53 {
        errors
        health {
           lameduck 5s
        }
        ready
        kubernetes cluster.local in-addr.arpa ip6.arpa {
           pods insecure
           fallthrough in-addr.arpa ip6.arpa
           ttl 30
        }
        prometheus :9153
        forward . 8.8.8.8
        cache 30
        loop
        reload
        loadbalance
    }
kind: ConfigMap
metadata:
  creationTimestamp: "2020-07-24T21:09:19Z"
  managedFields:
  - apiVersion: v1
    fieldsType: FieldsV1
    fieldsV1:
      f:data: {}
    manager: kubeadm
    operation: Update
    time: "2020-07-24T21:09:19Z"
  - apiVersion: v1
    fieldsType: FieldsV1
    fieldsV1:
      f:data:
        f:Corefile: {}
    manager: kubectl
    operation: Update
    time: "2020-07-27T05:30:57Z"
  name: coredns
  namespace: kube-system
  resourceVersion: "952988"
  selfLink: /api/v1/namespaces/kube-system/configmaps/coredns
  uid: 5a7fc41c-01a7-480a-89bd-82ab3070401c

2b)然后重新启动DNS

kubectl get pods -n kube-system -oname |grep coredns |xargs kubectl delete -n kube-system

希望对您有帮助