A：
• 现象：
报错如下：
"description": "Cannot do an IO operation(e.g. network IO error, file IO error)", "details": "I
/O error on POST request for \"http://127.0.0.1:7758/console/establish\": Connect to 127
.0.0.1:7758 [/127.0.0.1] failed: Connection refused; nested exception is org.apache.http
.conn.HttpHostConnectException: Connect to 127.0.0.1:7758 [/127.0.0.1] failed: Connect
ion refused","$$hashKey": "object:1344"

• 解决方案：
删除zstack/pickledb/下面的consoleProxy文件，且重连控制台代理生效。