AppSync：添加 Red Hat Enterprise Linux 主机失败，并显示错误“Deployment failed...”

AppSync 服务器日志显示：

<Date Time> INFO [Thread-78 (ActiveMQ-client-global-threads)] [com.emc.archway.service.sshservice.SshServiceBean] [AppSync Server] [] 123->>> Running ACP...
<Date Time> DEBUG [Thread-78 (ActiveMQ-client-global-threads)] [com.emc.archway.service.sshservice.SecureShellSession] [AppSync Server] [] 123->>> Wating for channnel status
<Date Time> 09:34:36.624 DEBUG [Thread-78 (ActiveMQ-client-global-threads)] [com.emc.archway.service.sshservice.SecureShellSession] [AppSync Server] [] 123->>> Channnel closed, Status  :1
<Date Time> 09:34:36.624 DEBUG [Thread-78 (ActiveMQ-client-global-threads)] [com.emc.archway.service.sshservice.SecureShellSession] [AppSync Server] [] 123->>> status :1 :stdout :0 :stderr :601
<Date Time> 09:34:36.624 ERROR [Thread-78 (ActiveMQ-client-global-threads)] [com.emc.archway.service.sshservice.SshServiceBean] [AppSync Server] [] 123->>> ACP failed, dumping stderr: Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/cx_Freeze-5.1.1-py3.6-linux-x86_64.egg/cx_Freeze/initscripts/__startup__.py", line 14, in run
  File "/usr/local/lib/python3.6/site-packages/cx_Freeze-5.1.1-py3.6-linux-x86_64.egg/cx_Freeze/initscripts/Console.py", line 26, in run
  File "acp.py", line 147, in <module>
  File "acp.py", line 119, in main
  File "linux/host.py", line 86, in run
  File "linux/host.py", line 111, in getHostInformation
  File "linux/host.py", line 1466, in getAliases
UnboundLocalError: local variable 'out' referenced before assignment
<Date Time> INFO [Thread-78 (ActiveMQ-client-global-threads)] [com.emc.archway.service.eventservice.EventServiceBean] [AppSync Server] [] 123->>> EVENT [GENL_000055]: An error occurred while running getHostInformation on host SourceHost. Refer e20fd18a-ad8a-4775-b753-7b37bd5402dd_getHostInformation.log on the agent host for more details.

注明的代理主机插件日志显示：

<Date Time> acputil.py[671]:execute() Info:Running command: /sbin/ip link
<Date Time> host.py[1458]:getAliases() NICList :: ['vethxxxd@if256', 'lo', 'enxxx2', ............]
<Date Time> acputil.py[270]:getCommandTimeout() CommandTimeout value : 1800
<Date Time> acputil.py[665]:execute() commandTimeout value : 1800
<Date Time> acputil.py[671]:execute() Info:Running command: /sbin/ip addr show dev vethxxxd@if256
<Date Time> host.py[1465]:getAliases() Error:ip command not found

手动运行 命令时，即使设备确实存在，也不存在返回的设备。

[root@SourceHost logs]# /sbin/ip addr show dev vethxxxd@if256
Device "vethxxxd@if256" does not exist.

Red Hat IP link 命令返回多个网络设备。第一个命令无效，因此，下一个命令导致代理停止响应。

与主机管理员接洽以移除无效的网络设备。