我的电脑上有两个虚拟机。一个是 OpenVPN 服务器，另一个是客户端。我尝试按照本教程进行操作：https://cyberciti.biz/faq/debian-10-set-up-openvpn-server-in-5-months/。
但我的服务器没有启动，并且systemctl status openvpn@server是：
[email protected] - OpenVPN connection to server
Loaded: loaded (/etc/systemd/system/[email protected]; enabled; vendor preset: enabled)
Active: activating (auto-restart) (Result: exit-code) since Wed 2020-11-04 08:23:01 EST; 875ms ago
Docs: man:openvpn(8)
https://community.openvpn.net/openvpn/wiki/Openvpn24ManPage
https://community.openvpn.net/openvpn/wiki/HOWTO
Process: 17591 ExecStart=/usr/sbin/openvpn --daemon ovpn-server --status /run/openvpn/server.status 10 --cd /etc/openvpn --config /etc/openvpn/server.conf --writepid /run/openvpn/server.pid (code=exited, status=1/FAILURE)
Main PID: 17591 (code=exited, status=1/FAILURE)
Status: "Pre-connection initialization succesful"
在server.conf中是：
port 1194
proto udp
dev tun
user nobody
group nogroup
persist-key
persist-tun
keepalive 10 120
topology subnet
server 10.8.0.0 255.255.255.0
ifconfig-pool-persist ipp.txt
push "dhcp-option DNS 176.103.130.130"
push "dhcp-option DNS 176.103.130.131"
push "redirect-gateway def1 bypass-dhcp"
dh none
ecdh-curve prime256v1
tls-crypt tls-crypt.key
crl-verify crl.pem
ca ca.crt
cert server_dPoisKPsEF83iFyb.crt
key server_dPoisKPsEF83iFyb.key
auth SHA256
cipher AES-138-GCM
ncp-ciphers AES-128-GCM
tls-server
tls-version-min 1.2
tls-cipher TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256
client-config-dir /etc/openvpn/ccd
status /var/log/openvpn/status.log
verb 3