碼頭工人的詹金斯奴隸拒絕SSH密鑰

Question

我在Docker容器中正在運行的Jenkins。 當拆分另一個Docker容器中的節點時，我收到消息：

[11/18/16 20:46:21] [SSH] Opening SSH connection to 192.168.99.100:32826.
ERROR: Server rejected the 1 private key(s) for Jenkins (credentialId:528bbe19-eb26-4c9f-bae3-82cd1247d50a/method:publickey)
[11/18/16 20:46:22] [SSH] Authentication failed.
hudson.AbortException: Authentication failed.
    at hudson.plugins.sshslaves.SSHLauncher.openConnection(SSHLauncher.java:1217)
    at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:711)
    at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:706)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
[11/18/16 20:46:22] Launch failed - cleaning up connection
[11/18/16 20:46:22] [SSH] Connection closed.

使用docker exec -i -t slave_name /bin/bash命令，我可以進入home / jenkins / .ssh目錄，以確認ssh密鑰在預期位置。

在我的配置頁面的CLOUD標題下，測試連接返回

版本= 1.12.3，API版本= 1.24

。

我正在運行OSX Sierra，並嘗試遵循RIOT Games Jenkins-Docker教程http://engineering.riotgames.com/news/building-jenkins-inside-ephemeral-docker-container 。

Jenkins主Docker文件：

FROM debian:jessie

# Create the jenkins user
RUN useradd -d "/var/jenkins_home" -u 1000 -m -s /bin/bash jenkins

# Create the folders and volume mount points
RUN mkdir -p /var/log/jenkins
RUN chown -R jenkins:jenkins /var/log/jenkins
VOLUME ["/var/log/jenkins", "/var/jenkins_home"]

USER jenkins
CMD ["echo", "Data container for Jenkins"]

詹金斯奴隸Dockerfile

FROM centos:7

# Install Essentials
RUN yum update -y && yum clean all

# Install Packages
RUN yum install -y git \
    && yum install -y wget \
    && yum install -y openssh-server \
    && yum install -y java-1.8.0-openjdk \
    && yum install -y sudo \
    && yum clean all

# gen dummy keys, centos doesn't autogen them.
RUN /usr/bin/ssh-keygen -A

# Set SSH Configuration to allow remote logins without /proc write access
RUN sed -ri 's/^session\s+required\s+pam_loginuid.so$/session optional \
    pam_loginuid.so/' /etc/pam.d/sshd

# Create Jenkins User
RUN useradd jenkins -m -s /bin/bash

# Add public key for Jenkins login
RUN mkdir /home/jenkins/.ssh
COPY /files/authorized_keys /home/jenkins/.ssh/authorized_keys
RUN chown -R jenkins /home/jenkins
RUN chgrp -R jenkins /home/jenkins
RUN chmod 600 /home/jenkins/.ssh/authorized_keys
RUN chmod 700 /home/jenkins/.ssh

# Add the jenkins user to sudoers
RUN echo "jenkins  ALL=(ALL)  ALL" >> etc/sudoers

# Set Name Servers to avoid Docker containers struggling to route or resolve DNS names.
COPY /files/resolv.conf /etc/resolv.conf

# Expose SSH port and run SSHD
EXPOSE 22
CMD ["/usr/sbin/sshd","-D"]

我一直在和另一個人在一個被困在同一地方的Linux機器上做同樣的教程。 任何幫助，將不勝感激。

Answer 1

您遇到的問題可能與主機的交互式授權有關。 嘗試將以下命令添加到從屬設備的Dockerfile

RUN ssh-keyscan -H 192.168.99.100 >> /home/jenkins/.ssh/known_hosts

確保在創建jenkins用戶之后添加它，最好在

USER jenkins

以避免錯誤的文件所有權。

另外，請確保在主主機在線時執行此操作，否則它將告訴您主機不可達。 如果不能，請手動執行從從屬服務器獲取known_hosts文件，然后將其復制到從屬服務器中。

您可以驗證這一點。 如果您將控制台連接到Docker從屬服務器並將ssh連接到主服務器，它將要求您信任服務器並將其添加到已知主機。