所以Jenkins安装在集群内
official helm chart
installPlugins:
- kubernetes:1.18.1
- workflow-job:2.33
- workflow-aggregator:2.6
- credentials-binding:1.19
- git:3.11.0
- blueocean:1.19.0
我的Jenkinsfile依赖于以下pod模板来启动从机:
kind: Pod
spec:
# dnsConfig:
# options:
# - name: ndots
# value: "1"
containers:
- name: dind
image: docker:19-dind
command:
- cat
tty: true
volumeMounts:
- name: dockersock
readOnly: true
mountPath: /var/run/docker.sock
resources:
limits:
cpu: 500m
memory: 512Mi
volumes:
- name: dockersock
hostPath:
path: /var/run/docker.sock
无论何时有新的构建,从服务器(pod/dind容器)都会像预期的那样很好地启动。
但是,它在Jenkinsfile pipeline的“docker build”步骤中崩溃了
docker build -t ...
Step 16/24 : RUN ../gradlew clean bootJar
---> Running in f14b6418b3dd
Downloading https://services.gradle.org/distributions/gradle-5.5-all.zip
Exception in thread "main" java.net.UnknownHostException: services.gradle.org
at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:220)
at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:403)
at java.base/java.net.Socket.connect(Socket.java:591)
at java.base/sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:285)
at java.base/sun.security.ssl.BaseSSLSocketImpl.connect(BaseSSLSocketImpl.java:173)
at java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:182)
at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:474)
at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:569)
at java.base/sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:265)
at java.base/sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:372)
at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191)
at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1187)
at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1081)
at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1587)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1515)
at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:250)
at org.gradle.wrapper.Download.downloadInternal(Download.java:67)
at org.gradle.wrapper.Download.download(Download.java:52)
at org.gradle.wrapper.Install$1.call(Install.java:62)
at org.gradle.wrapper.Install$1.call(Install.java:48)
at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:69)
at org.gradle.wrapper.Install.createDist(Install.java:48)
at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:107)
at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:63)
The command '/bin/sh -c ../gradlew clean bootJar' returned a non-zero code:
在第一次galance上,我以为是从容器的DNS解析问题(
docker:19-dind
)因为它是高山。
这就是我调试它的原因
/etc/resolv.conf
通过添加
sh "cat /etc/resolv.conf"
我得到:
nameserver 172.20.0.10
search cicd.svc.cluster.local svc.cluster.local cluster.local ap-southeast-1.compute.internal
options ndots:5
我删除了最后一行
options ndots:5
根据互联网上许多线程的建议。
但这并不能解决问题。
我一遍又一遍地想,我意识到造成这个错误的容器不是从容器(docker:19dind),而是中间容器被打开以满足
docker build
因此,我补充道
RUN cat /etc/resolv.conf
作为Dockerfile中的另一层
FROM gradle:5.5-jdk11
).
resolv.conf
是不同的:
Step 15/24 : RUN cat /etc/resolv.conf
---> Running in 91377c9dd519
; generated by /usr/sbin/dhclient-script
search ap-southeast-1.compute.internal
options timeout:2 attempts:5
nameserver 10.0.0.2
Removing intermediate container 91377c9dd519
---> abf33839df9a
Step 16/24 : RUN ../gradlew clean bootJar
---> Running in f14b6418b3dd
Downloading https://services.gradle.org/distributions/gradle-5.5-all.zip
Exception in thread "main" java.net.UnknownHostException: services.gradle.org
基本上,它是一个不同的名称服务器
10.0.0.2
而不是从容器的名称服务器
172.20.0.10
. 没有
ndots:5
在resolv.conf这个中间容器中。
经过所有这些调试步骤和多次尝试,我感到很困惑。
建筑
Jenkins Server (Container )
||
(spin up slaves)
||__ SlaveA (Container, image: docker:19-dind)
||
( run "docker build" )
||
||_ intermediate (container, image: gradle:5.5-jdk11 )
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