jenkins swarm plugin：无法连接到master,连接被拒绝

ui7jx7zq  于 9个月前  发布在  Jenkins
关注(0)|答案(2)|浏览(180)

我正在使用jenkins swarm插件连接一个从节点到一个主节点。但是，它给出了Connection Refused错误。
我正在使用Docker swarm在多节点集群上部署这个。现在我只使用单节点设置进行测试，这里是我的compose文件：

version: '3.1'

    services:
      viz:
        image: manomarks/visualizer
        volumes:
          - "/var/run/docker.sock:/var/run/docker.sock"
        ports:
          - "8090:8080"

      master:
        image: myproject-jenkins-master
        ports:
          - "8080:8080"
          - "50000:50000"
        volumes:
          - ./jenkins_home:/var/jenkins_home

      nginx:
        image: myproject-jenkins-nginx
        ports:
          - "80:80"

      linuxagent:
        image: myproject-jenkins-linuxagent

字符串
它是使用docker stack deploy命令部署的，因此上面的每个服务都有自己的内部负载均衡器。
Jenkins是通过nginx在web上提供的。但我也保留了8080端口以供调试。如果我打开浏览器并点击http://localhost或http://localhost:8080，我可以访问jenkins web界面。在master上，我已经安装了jenkins swarm插件。如果我从linuxagent容器进入bash shell，这是一个从节点，我可以ping其他的docker服务，但当我尝试运行swarm-client-3.3.jar文件时会发生以下情况。
如果我试图访问jenkins，我可以通过访问http://myproject_master:8080来实现

root@d139902be5de:~# curl http://myproject_master:8080
<html><head><meta http-equiv='refresh' content='1;url=/login?from=%2F'/><script>window.location.replace('/login?from=%2F');</script></head><body style='background-color:white; color:white;'>

Authentication required
<!--
You are authenticated as: anonymous
Groups that you are in:

Permission you need to have (but didn't): hudson.model.Hudson.Read
 ... which is implied by: hudson.security.Permission.GenericRead
 ... which is implied by: hudson.model.Hudson.Administer
-->

</body></html>                                                                                                                                                                                                                                                                                                            root@d139902be5de:~#

型
此外，我可以通过http://myproject_nginx访问相同的

root@d139902be5de:~# curl http://myproject_nginx      
<html><head><meta http-equiv='refresh' content='1;url=/login?from=%2F'/><script>window.location.replace('/login?from=%2F');</script></head><body style='background-color:white; color:white;'>

Authentication required
<!--
You are authenticated as: anonymous
Groups that you are in:

Permission you need to have (but didn't): hudson.model.Hudson.Read
 ... which is implied by: hudson.security.Permission.GenericRead
 ... which is implied by: hudson.model.Hudson.Administer
-->

</body></html>                                                                                                                                                                                                                                                                                                            root@d139902be5de:~#

型
如果我尝试启动swarm的jar文件，我会得到这个错误：

root@d139902be5de:~# java -jar swarm-client-3.3.jar -username mandeep -password 12213 -master http://myproject_nginx      
Apr 09, 2017 5:52:44 PM hudson.plugins.swarm.Client main
INFO: Client.main invoked with: [-username mandeep -password 12213 -master http://myproject_nginx]
Apr 09, 2017 5:52:44 PM hudson.plugins.swarm.Client run
INFO: Discovering Jenkins master
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Apr 09, 2017 5:52:44 PM hudson.plugins.swarm.Client run
INFO: Attempting to connect to http://myproject_nginx/ bc1be8e7-eaf0-47ff-8aeb-36f75d6ba081 with ID c84ce43b
Apr 09, 2017 5:52:45 PM hudson.remoting.jnlp.Main createEngine
INFO: Setting up slave: d139902be5de-c84ce43b
Apr 09, 2017 5:52:45 PM hudson.remoting.jnlp.Main$CuiListener <init>
INFO: Jenkins agent is running in headless mode.
Apr 09, 2017 5:52:45 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Locating server among [http://myproject_nginx/]
Apr 09, 2017 5:52:45 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Agent discovery successful
  Agent address: myproject_nginx
  Agent port:    50000
  Identity:      86:5b:f3:77:84:92:21:87:95:4c:4b:0e:f7:4e:e5:1d
Apr 09, 2017 5:52:45 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Handshaking
Apr 09, 2017 5:52:45 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connecting to myproject_nginx:50000
Apr 09, 2017 5:52:55 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connecting to myproject_nginx:50000 (retrying:2)
java.io.IOException: Failed to connect to myproject_nginx:50000
  at org.jenkinsci.remoting.engine.JnlpAgentEndpoint.open(JnlpAgentEndpoint.java:243)
  at hudson.remoting.Engine.connect(Engine.java:500)
  at hudson.remoting.Engine.innerRun(Engine.java:364)
  at hudson.remoting.Engine.run(Engine.java:287)
Caused by: java.net.ConnectException: Connection refused
  at sun.nio.ch.Net.connect0(Native Method)
  at sun.nio.ch.Net.connect(Net.java:454)
  at sun.nio.ch.Net.connect(Net.java:446)
  at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:648)
  at java.nio.channels.SocketChannel.open(SocketChannel.java:189)
  at org.jenkinsci.remoting.engine.JnlpAgentEndpoint.open(JnlpAgentEndpoint.java:204)
  ... 3 more

型
看起来问题是从服务器期望主服务器是myproject_nginx，因此命中端口50000，这失败了，因为此服务没有暴露端口50000。因此，出于此目的，我在myproject_master服务上暴露了端口8080和50000。但是当我尝试该URL时，我得到了不同的错误

root@d139902be5de:~# java -jar swarm-client-3.3.jar -username mandeep -password 12213 -master http://myproject_master:8080
Apr 09, 2017 5:57:01 PM hudson.plugins.swarm.Client main
INFO: Client.main invoked with: [-username mandeep -password 12213 -master http://myproject_master:8080]
Apr 09, 2017 5:57:01 PM hudson.plugins.swarm.Client run
INFO: Discovering Jenkins master
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Apr 09, 2017 5:57:01 PM hudson.plugins.swarm.Client run
SEVERE: IOexception occurred
java.net.ConnectException: Connection refused (Connection refused)
  at java.net.PlainSocketImpl.socketConnect(Native Method)
  at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
  at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
  at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
  at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
  at java.net.Socket.connect(Socket.java:589)
  at java.net.Socket.connect(Socket.java:538)
  at java.net.Socket.<init>(Socket.java:434)
  at java.net.Socket.<init>(Socket.java:286)
  at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:80)
  at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:122)
  at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:707)
  at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpConnectionAdapter.open(MultiThreadedHttpConnectionManager.java:1361)
  at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:387)
  at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
  at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
  at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323)
  at hudson.plugins.swarm.SwarmClient.discoverFromMasterUrl(SwarmClient.java:224)
  at hudson.plugins.swarm.Client.run(Client.java:115)
  at hudson.plugins.swarm.Client.main(Client.java:88)

型
这是我完全卡住的地方，无法理解如何解决这个问题。是否有问题，因为从运行在负载均衡器后面？或者我试图实现的架构中有什么根本性的错误？我希望能够动态扩展linuxagent服务，以便每个节点都充当从代理，并且只与主节点连接我读了关于jenkins的swarm插件的文章，发现它可以用来实现这种设置。

Jenkins

2条答案

按热度按时间
6g8kf2rb

6g8kf2rb1#

对于我来说，改变参数的顺序修复了它。请将-master移动到群参数的开头：

java -jar /usr/share/jenkins/swarm-client-3.4.jar -disableSslVerification -master

字符串
这应该修复了我看到的以下错误：

Jul 25, 2017 6:26:23 PM hudson.plugins.swarm.Client run
INFO: Discovering Jenkins master
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for 
further details.
Exception in thread "main" java.lang.IllegalArgumentException: Host 
name may not be null
at org.apache.commons.httpclient.HttpHost.<init>(HttpHost.java:68)
at org.apache.commons.httpclient.HttpHost.<init>(HttpHost.java:107)
at org.apache.commons.httpclient.HttpMethodBase.setURI(HttpMethodBase.java:280)
at org.apache.commons.httpclient.HttpMethodBase.<init>(HttpMethodBase.java:220)
at org.apache.commons.httpclient.methods.GetMethod.<init>(GetMethod.java:89)
at hudson.plugins.swarm.SwarmClient.discoverFromMasterUrl(SwarmClient.java:220)
at hudson.plugins.swarm.Client.run(Client.java:114)
at hudson.plugins.swarm.Client.main(Client.java:87)

型

赞(0）分享  回复(0）举报  9个月前
j7dteeu8

j7dteeu82#

尝试打开TCP端口443和50000的TCP端口。

赞(0）分享  回复(0）举报  9个月前
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