Ansible学习笔记（六）：Ansible使用时常见问题总结

1、出现Error: ansible requires a json module, none found!

SSH password:

192.168.24.15 | FAILED >> {

   "failed": true,

   "msg": "Error: ansible requires a json module, nonefound!",

   "parsed": false

}

解决：python版本太低，要不升级python要不就安装python-simplejson

2、安装完成后链接客户端服务器报错：

FAILED => Using a SSH password insteadof a key is not possible because Host Key checking is enabled and sshpass doesnot support this.  Please add this host'sfingerprint to your known_hosts file to manage this host.

解决：在ansible 服务器上使用ssh 登录下/etc/ansible/hosts 里面配置的服务器。而后再次使用ansible 去管理就不会报上面的错误了！但这样大批量登录就麻烦来。由于默认ansible是使用key验证的，若是使用密码登录的服务器，使用ansible的话，要不修改ansible.cfg配置文件的ask_pass = True给取消注释，要不就在运行命令时候加上-k，这个意思是-k, --ask-pass ask for SSH password。再修改：host_key_checking= False便可

3、若是客户端不在know_hosts里将会报错

paramiko: The authenticity of host '192.168.24.15'can't be established.

The ssh-rsa key fingerprint is397c139fd4b0d763fcffaee346a4bf6b.

Are you sure you want to continueconnecting (yes/no)?

解决：须要修改ansible.cfg的#host_key_checking= False取消注释

4、出现FAILED => FAILED: not a valid DSA private key file

解决：须要你在最后添加参数-k

5、openssh升级后没法登陆报错

PAM unable todlopen(/lib64/security/pam_stack.so): /lib64/security/pam_stack.so: cannot openshared object

file: No such file or directory

解决：sshrpm 升级后会修改/etc/pam.d/sshd 文件。须要升级前备份此文件最后还原便可登陆。

6、pip安装完成后，运行ansible报错：

File "/usr/lib64/python2.6/subprocess.py",line 642, in __init__ errread, errwrite)

解决：安装：yum installopenssh-clients

7、第一次系统初始化运行生成本机ansible用户key时报错

failed: [127.0.0.1] =>{"checksum": "f5f2f20fc0774be961fffb951a50023e31abe920","failed": true}

msg: Aborting, target uses selinux butpython bindings (libselinux-python) aren't installed!

FATAL: all hosts have already failed –aborting

解决：# yuminstall libselinux-python -y

8、ansible没法起停tomcat的时候，有两个点须要关注

（1）环境变量，在startup.sh中添加source /etc/profile

（2）后台运行，加上nohup &