unpack（b) received extra data saltstack故障

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saltstack故障解决

故障一：

[root@scj ~]# salt '*' test.ping

[ERROR] Salt request timed out. If this error persists, worker_threads may need to be increased.

Failed to authenticate! This is most likely because this user is not permitted to execute commands, but there is a small possibility that a disk error occurred (check disk/inode usage).

解决方法：

首先根据错误提示，修改配置文件/etc/salt/master里面的worker_threads 参数，，将其值改大，重启后发现错误依然存在

然后研究了半天才发现：之前master机器重启过，iptables防火墙设置的规则没有save保存，导致master与minion机不通信，解决如下：

[root@scj ~]# iptables -A INPUT -p tcp --dport 4505 -j ACCEPT

[root@scj ~]# iptables -A INPUT -p tcp --dport 4506 -j ACCEPT

[root@scj ~]# /etc/init.d/iptables save

[root@scj ~]# salt "*" test.ping

192.168.186.129:

True

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