jenkins问题汇总1（jenkins连接slave失败）

1. ssh链接被拒绝

错误告警

ubuntuSSH Connection failed with IOException: "Connection refused (Connection refuse...

原因及解决

没有安装ssh
通过ps -axv | grep ssh 查看发现没有安装ssh，安装命令apt-get install ssh

2. 密码错误

错误告警

·SSH host key matches key seen previously for this host. Connection will be allowed.
ERROR: Failed to authenticate as root. Wrong password.

原因及解决

密码确实是对的，发现其他账号可以登录，切换成普通用户以后就OK了
ssh 使用root用户登录需要设置

sudo vi /etc/ssh/sshd_config

找到并用#注释掉这行：

PermitRootLogin prohibit-password

新建一行 添加：

PermitRootLogin yes

重启服务

sudo service ssh restart

3. SSH

错误告警

Key exchange was not finished, connection is closed.
java.io.IOException: There was a problem while connecting to 192.168.1.107:22

原因及解决

切换成信任的策略

4. 拷贝脚本/新建路径失败

错误告警

[SSH] Copying latest remoting.jar...
java.io.IOException: Could not copy remoting.jar into '/usr1/home' on agent

主要原因

普通用户权限不够

5. java找不到

错误告警

Couldn't figure out the Java version of /usr1/home/jdk/bin/java bash: /usr1/

原因及解决

设置手动设置java路径