Auth_pam will require audit writes or the connection will be rejected
as the plugin fails to initialize like:
  openvpn[1111]: sudo: unable to send audit message
  openvpn[1111]: sudo: pam_open_session: System error
  openvpn[1111]: sudo: policy plugin failed session initialization

See links from https://community.openvpn.net/openvpn/ticket/918 for
more.

auth_pam is a common use case and capabilties for it should be allowed
by the .service file.

Fixes: #918

Signed-off-by: Christian Ehrhardt <christian.ehrha...@canonical.com>
---
 distro/systemd/openvpn-ser...@.service.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/distro/systemd/openvpn-ser...@.service.in 
b/distro/systemd/openvpn-ser...@.service.in
index a8366a04..d1cc72cb 100644
--- a/distro/systemd/openvpn-ser...@.service.in
+++ b/distro/systemd/openvpn-ser...@.service.in
@@ -11,7 +11,7 @@ Type=notify
 PrivateTmp=true
 WorkingDirectory=/etc/openvpn/server
 ExecStart=@sbindir@/openvpn --status %t/openvpn-server/status-%i.log 
--status-version 2 --suppress-timestamps --config %i.conf
-CapabilityBoundingSet=CAP_IPC_LOCK CAP_NET_ADMIN CAP_NET_BIND_SERVICE 
CAP_NET_RAW CAP_SETGID CAP_SETUID CAP_SYS_CHROOT CAP_DAC_OVERRIDE
+CapabilityBoundingSet=CAP_IPC_LOCK CAP_NET_ADMIN CAP_NET_BIND_SERVICE 
CAP_NET_RAW CAP_SETGID CAP_SETUID CAP_SYS_CHROOT CAP_DAC_OVERRIDE 
CAP_AUDIT_WRITE
 LimitNPROC=10
 DeviceAllow=/dev/null rw
 DeviceAllow=/dev/net/tun rw
-- 
2.17.1


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