阿里云升级重启，没有停服务，重启上来fe和be进程都可以启动，但是连不进去库
，
需要用./bin/start_fe.sh --daemon --metadata_failure_recovery 命令才可以进入库里，但是show frontends 显示空指针异常
，
show backends只有一个be活着.
服务配置是docker中一个fe,两个be.be.info日志及show backends截图；
curl只有一个是通的
[root@7fae8cda0e2c bin]# curl -v telnet://172.17.0.3:9050
- Rebuilt URL to: telnet://172.17.0.3:9050/
- Trying 172.17.0.3...
- TCP_NODELAY set
- Connected to 172.17.0.3 (172.17.0.3) port 9050 (#0)
^C
[root@7fae8cda0e2c bin]# curl -v telnet://172.17.0.4:9050 - Rebuilt URL to: telnet://172.17.0.4:9050/
- Trying 172.17.0.4...
- TCP_NODELAY set
- connect to 172.17.0.4 port 9050 failed: Connection refused
- Failed to connect to 172.17.0.4 port 9050: Connection refused
- Closing connection 0
curl: (7) Failed to connect to 172.17.0.4 port 9050: Connection refused
