python - 安装 apache bloodbound 时出错

Question

在此命令行之后：

python bloodhound_setup.py --environments_directory=/opt/bloodhound/environments bloodbound=DEF

我明白了

Error: TimeoutError: Unable to get database connection within 0 seconds. (OperationalError: could not connect to server: Connection refused
        Is the server running on host "localhost" (::1) and accepting
        TCP/IP connections on port 5432?
could not connect to server: Connection refused
        Is the server running on host "localhost" (127.0.0.1) and accepting
        TCP/IP connections on port 5432?
)

有什么帮助吗？谢谢