killall -USR2 openvpn ; tail -f /var/log/syslog

Oct 14 07:34:14 vpn2 openvpn[20959]: Updated,Fri Oct 14 07:34:14 2016
Oct 14 07:34:14 vpn2 openvpn[20959]: Common Name,Real Address,Bytes Received,Bytes Sent,Connected Since
Oct 14 07:26:26 vpn2 openvpn[20959]:
10.8.0.132,hostname1,213.219.XXX.XXX:63765,Fri Oct 14 07:25:01 2016
Oct 14 07:26:26 vpn2 openvpn[20959]:
10.8.0.242,hostname2,213.219.XXX.XXX:62416,Sun Sep 25 03:49:19 2016

10.9.10.11,test-docker,52.58.48.98:56859,Wed May  4 09:37:34 2016
10.9.7.45,test-docker,52.58.156.80:38774,Wed May  4 09:36:59 2016
10.9.1.103,test-docker,52.58.161.230:52201,Wed May  4 09:35:47 2016
GLOBAL STATS
Max bcast/mcast queue length,0
END
>CLIENT:ESTABLISHED,19845
>CLIENT:ENV,n_clients=19361
>CLIENT:ENV,time_unix=1462357164