cvat启动成功之后无法访问

Posted 2021-07-31 修炼之路

错误信息

cvat安装好之后，通过docker-compose up -d启动成功之后，输出信息如下

$ docker-compose up -d
/root/anaconda3/lib/python3.5/site-packages/paramiko/transport.py:33: CryptographyDeprecationWarning: Python 3.5 support will be dropped in the next release of cryptography. Please upgrade your Python.
  from cryptography.hazmat.backends import default_backend
Creating network "cvat_default" with the default driver
Creating cvat_redis ... done
Creating cvat_db    ... done
Creating cvat       ... done
Creating cvat_ui    ... done
Creating cvat_proxy ... done

通过localhost:8080来访问时，提示无法访问。通过下面命令来创建super user时报错

#创建super user
docker exec -it cvat bash -ic 'python3 ~/manage.py createsuperuser'
#错误信息如下
django.db.utils.OperationalError: could not connect to server: Connection timed out
	Is the server running on host "cvat_db" (172.28.0.3) and accepting
	TCP/IP connections on port 5432?

解决办法

方法1

• 用ifconfig命令查看docker占用的网络服务

$ ifconfig
br-fe794652b2b6 Link encap:Ethernet  HWaddr 02:42:07:cf:35:d7  
          inet addr:172.28.0.1  Bcast:172.28.0.255  Mask:255.255.255.0
          inet6 addr: fe80::42:7ff:fecf:35d7/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:183 errors:0 dropped:0 overruns:0 frame:0
          TX packets:249 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:236909 (236.9 KB)  TX bytes:35323 (35.3 KB)

如果在docker-compose down之后这个服务还在，我们就通过sudo ifconfig br-fe794652b2b6 down来关闭这个服务之后，再通过docker-compose up重启之后这个问题就能解决了

方法2

通过上面的信息不难看出，应该是cvat_db无法连接导致的，我们通过docker来测试连接，发现根本无法ping通

> docker exec -it cvat_db bash
bash-5.1# ping 172.28.0.4
PING 172.28.0.4 (172.28.0.4): 56 data bytes
^C
--- 172.28.0.4 ping statistics ---
5 packets transmitted, 0 packets received, 100% packet loss
bash-5.1# ping 172.28.0.0
PING 172.28.0.0 (172.28.0.0): 56 data bytes
^C
--- 172.28.0.0 ping statistics ---
5 packets transmitted, 0 packets received, 100% packet loss
bash-5.1# ping 172.28.0.6
PING 172.28.0.6 (172.28.0.6): 56 data bytes
^C
--- 172.28.0.6 ping statistics ---
2 packets transmitted, 0 packets received, 100% packet loss

修改配置文件中设置的IP地址，修改内容如下

• 修改docker-compose.xml中https://github.com/openvinotoolkit/cvat/blob/develop/docker-compose.yml#L83

将172.28.0.0/24改为
172.18.0.0/16

• 修改docker-compose.serverless.yml中的https://github.com/openvinotoolkit/cvat/blob/develop/components/serverless/docker-compose.serverless.yml#L17

将172.28.0.1改为
172.18.0.0

修改完成之后，重新启动即可访问

参考：

1. https://openvinotoolkit.github.io/cvat/docs/for-users/installation/
2. https://github.com/openvinotoolkit/cvat/issues/3179