How to fix this issue, after I finally got VPN working again:
? openvpn@sysadmin_server1.service - OpenVPN Robust And Highly Flexible Tunneling Application On sysadmin_server1
Loaded: loaded (/usr/lib/systemd/system/[email protected]; enabled; vendor preset: disabled)
Drop-In: /etc/systemd/system/[email protected]
+-sangoma_openvpn_override.conf
Active: active (running) since Tue 2019-01-29 20:31:16 CST; 6h ago
Main PID: 5315 (openvpn)
Status: "Initialization Sequence Completed"
CGroup: /system.slice/system-openvpn.slice/openvpn@sysadmin_server1.service
+-5315 /usr/sbin/openvpn --cd /etc/openvpn/ --config sysadmin_server1.conf
Jan 30 02:36:20 pbx.XXX.biz openvpn[5315]: Wed Jan 30 02:36:20 2019 client24/XX.XX.XX.XXXX:39481 peer info: IV_COMP_STUB=1
Jan 30 02:36:20 pbx.XXX.biz openvpn[5315]: Wed Jan 30 02:36:20 2019 client24/XX.XX.XX.XXXX:39481 peer info: IV_COMP_STUBv2=1
Jan 30 02:36:20 pbx.XXX.biz openvpn[5315]: Wed Jan 30 02:36:20 2019 client24/XX.XX.XX.XXXX:39481 peer info: IV_TCPNL=1
Jan 30 02:36:20 pbx.XXX.biz openvpn[5315]: Wed Jan 30 02:36:20 2019 client24/XX.XX.XX.XXXX:39481 Outgoing Data Channel: Cipher 'AES-256-GCM' initialized with 256 bit key
Jan 30 02:36:20 pbx.XXX.biz openvpn[5315]: Wed Jan 30 02:36:20 2019 client24/XX.XX.XX.XXXX:39481 Incoming Data Channel: Cipher 'AES-256-GCM' initialized with 256 bit key
Jan 30 02:36:20 pbx.XXX.biz openvpn[5315]: Wed Jan 30 02:36:20 2019 client24/XX.XX.XX.XXXX:39481 Control Channel: TLSv1.2, cipher TLSv1/SSLv3 ECDHE-RSA-AES256-GCM-SHA384, 2048 bit RSA
Jan 30 02:46:32 pbx.XXX.biz openvpn[5315]: Wed Jan 30 02:46:32 2019 YYY.YYY.YYY.YY:32840 TLS: Initial packet from [AF_INET]YYY.YYY.YYY.YY:32840, sid=12121212 12121212
Jan 30 02:47:32 pbx.XXX.biz openvpn[5315]: Wed Jan 30 02:47:32 2019 YYY.YYY.YYY.YY:32840 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)
Jan 30 02:47:32 pbx.XXX.biz openvpn[5315]: Wed Jan 30 02:47:32 2019 YYY.YYY.YYY.YY:32840 TLS Error: TLS handshake failed
Jan 30 02:47:32 pbx.XXX.biz openvpn[5315]: Wed Jan 30 02:47:32 2019 YYY.YYY.YYY.YY:32840 SIGUSR1[soft,tls-error] received, client-instance restarting```