Mac下的宝塔面板中安装了MongoDB，但是启动时候执行 sudo systemctl start mongod 报错“Failed to get D-Bus connection: Operation not permitted”。经过查找记录一下解决方法：

1 先做备份

mv /usr/bin/systemctl /usr/bin/systemctl.old

2 下载 systemctl文件

curl https://raw.githubusercontent.com/gdraheim/docker-systemctl-replacement/master/files/docker/systemctl.py > /usr/bin/systemctl

3 赋予权限

chmod +x /usr/bin/systemctl

4 完成