在 Proxmox LXC 安裝 OpenVPN，並設定完成啟動後，出現下面的錯誤訊息
# systemctl status openvpn@server.service
● openvpn@server.service – OpenVPN connection to server
Loaded: loaded (/lib/systemd/system/openvpn@.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Mon 2017-02-20 19:17:06 CST; 6s ago
Docs: man:openvpn(8)
https://community.openvpn.net/openvpn/wiki/Openvpn23ManPage
https://community.openvpn.net/openvpn/wiki/HOWTO
Process: 1585 ExecStart=/usr/sbin/openvpn –daemon ovpn-%i –status /run/openvpn/%i.status 10 –cd /etc/openvpn –script-security 2 –config /etc/openvpn/%i.conf –writepid /run/openvpn/%i.pid (code=exited, st
Main PID: 1586 (code=exited, status=1/FAILURE)
Feb 20 19:17:06 vpn systemd[1]: Starting OpenVPN connection to server…
Feb 20 19:17:06 vpn systemd[1]: openvpn@server.service: PID file /run/openvpn/server.pid not readable (yet?) after start: No such file or directory
Feb 20 19:17:06 vpn systemd[1]: Started OpenVPN connection to server.
Feb 20 19:17:06 vpn systemd[1]: openvpn@server.service: Main process exited, code=exited, status=1/FAILURE
Feb 20 19:17:06 vpn systemd[1]: openvpn@server.service: Unit entered failed state.
Feb 20 19:17:06 vpn systemd[1]: openvpn@server.service: Failed with result ‘exit-code’.[@more@]參考網站：
Setup OpenVPN on Proxmox LXC – Hungred Dot Com
登入 LXC 後
# cd /dev
# mkdir net
# mknod net/tun c 10 200
# chmod 0666 net/tun
# ls -l /dev/net/tun
crw-rw-rw- 1 root root 10, 200 Feb 20 19:24 /dev/net/tun
或直接寫在 /etc/rc.local 之中
# vim /etc/rc.local
加入下面幾行
mkdir /dev/net
mknod /dev/net/tun c 10 200
chmod 0666 /dev/net/tun
OpenVPN 可以正常執行
# systemctl status openvpn@server.service
● openvpn@server.service – OpenVPN connection to server
Loaded: loaded (/lib/systemd/system/openvpn@.service; enabled; vendor preset: enabled)
Active: active (running) since Mon 2017-02-20 19:24:33 CST; 18s ago
Docs: man:openvpn(8)
https://community.openvpn.net/openvpn/wiki/Openvpn23ManPage
https://community.openvpn.net/openvpn/wiki/HOWTO
Process: 1600 ExecStart=/usr/sbin/openvpn –daemon ovpn-%i –status /run/openvpn/%i.status 10 –cd /etc/openvpn –script-security 2 –config /etc/openvpn/%i.conf –writepid /run/openvpn/%i.pid (code=exited, st
Main PID: 1601 (openvpn)
CGroup: /system.slice/system-openvpn.slice/openvpn@server.service
mq1601 /usr/sbin/openvpn –daemon ovpn-server –status /run/openvpn/server.status 10 –cd /etc/openvpn –script-security 2 –config /etc/openvpn/server.conf –writepid /run/openvpn/server.pid
Feb 20 19:24:33 vpn systemd[1]: Starting OpenVPN connection to server…
Feb 20 19:24:33 vpn systemd[1]: openvpn@server.service: PID file /run/openvpn/server.pid not readable (yet?) after start: No such file or directory
Feb 20 19:24:33 vpn systemd[1]: Started OpenVPN connection to server.
server.pid 沒有找不到
# ls -l /var/run/openvpn/server.pid
-rw-r–r– 1 root root 5 Feb 20 19:24 /var/run/openvpn/server.pid
# ls -l /run/openvpn/server.pid
-rw-r–r– 1 root root 5 Feb 20 19:24 /run/openvpn/server.pid
執行 OpenVPN 後產生的 tun0 介面
# ifconfig tun0
tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:10.1.0.1 P-t-P:10.1.0.2 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)