zabbix_agentd: Add ovpn monitoring items

Added new IPFire specific monitoring capabilities to Zabbix Agent:
- ipfire.ovpn.clients.discovery: Discovery of configured ovpn
  clients. Returns a JSON array.
- ipfire.ovpn.statusreport.get: Parses and returns
  /var/run/ovpnserver.log in a JSON array

Since /var/run/ovpnserver.log is only readable by root, 'cat' of that
file is added to sudoers.d/zabbix_agentd.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/config/zabbix_agentd/sudoers b/config/zabbix_agentd/sudoers
index 2d71ae78f3bdbfaba32e37cd03420be329bb3fe5..d93ec5d5566650a32cd4232ed81d753af031fdef 100644 (file)
--- a/config/zabbix_agentd/sudoers
+++ b/config/zabbix_agentd/sudoers
@@ -8,4 +8,4 @@
 # To add more sudo rights to zabbix agent, you should modify the sudoers file zabbix_agentd_user
 #
 Defaults:zabbix !requiretty
-zabbix ALL=(ALL) NOPASSWD: /opt/pakfire/pakfire status, /usr/sbin/fping, /usr/local/bin/getipstat
+zabbix ALL=(ALL) NOPASSWD: /opt/pakfire/pakfire status, /usr/sbin/fping, /usr/local/bin/getipstat, /bin/cat /var/run/ovpnserver.log

diff --git a/config/zabbix_agentd/userparameter_ipfire.conf b/config/zabbix_agentd/userparameter_ipfire.conf
index c5a636edf337136ffaee71e728a7a7ad08c5ed0c..b8b512d820356a59a37d7805661d527d87955716 100644 (file)
--- a/config/zabbix_agentd/userparameter_ipfire.conf
+++ b/config/zabbix_agentd/userparameter_ipfire.conf
@@ -9,4 +9,10 @@ UserParameter=ipfire.net.fw.hits.raw,sudo /usr/local/bin/getipstat -xf | grep "/
 # Number of currently Active DHCP leases
 UserParameter=ipfire.dhcpd.clients,grep -s -E 'lease|bind' /var/state/dhcp/dhcpd.leases | sed ':a;/{$/{N;s/\n//;ba}' | grep "state active" | wc -l
 # Number of Captive Portal clients
-UserParameter=ipfire.captive.clients,awk -F ',' 'length($2) == 17 {sum += 1} END {if (length(sum) == 0) print 0; else print sum}' /var/ipfire/captive/clients
\ No newline at end of file
+UserParameter=ipfire.captive.clients,awk -F ',' 'length($2) == 17 {sum += 1} END {if (length(sum) == 0) print 0; else print sum}' /var/ipfire/captive/clients
+# Discovery of configured ovpn clients
+UserParameter=ipfire.ovpn.clients.discovery,cat /var/ipfire/ovpn/ovpnconfig 2>/dev/null | awk -F',' 'BEGIN { ORS = ""; print "[" } { printf "%s{\"{#NAME}\":\"%s\",\"{#COMMONNAME}\":\"%s\",\"{#STATE}\":\"%s\",\"{#REMARK}\":\"%s\",\"{#TYPE}\":\"%s\"}", separator, $3, $4, $2, $27, $5; separator = ","; } END { print "]" }'
+# Get OpenVPN status report
+UserParameter=ipfire.ovpn.statusreport.get,sudo cat /var/run/ovpnserver.log 2>/dev/null | awk -F"," 'function unixtime(t) { gsub(/[-:]/," ",t); return mktime(t) } BEGIN { ORS = ""; print "{" } /^Updated,.+/ { printf "\"timestamp\":%s,\"clients\":[",unixtime($2) } /^.+,[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+:[0-9]+,[0-9]+,[0-9]+,.+/ { if ($1 != "Common Name") { printf "%s{\"common_name\":\"%s\",\"real_address\":\"%s\",\"bytes_in\":\"%s\",\"bytes_out\":\"%s\",\"connected_since\":\"%s\"}", separator, $1, $2, $3, $4, unixtime($5); separator = ","; } } /^ROUTING TABLE/ { print "],\"routing_table\":["; separator = "" } /^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+,.+,[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+:[0-9]+,.+/ { if ($1 != "Virtual Address") { printf "%s{\"common_name\":\"%s\",\"virtual_address\":\"%s\",\"real_address\":\"%s\",\"last_ref\":\"%s\"}", separator, $2, $1, $3, unixtime($4); separator = "," } } END { print "]}" }'
+# Allow item key to be called with (unused) parameters. This allows the #SINGLETON method of discovering this item only when openvpn service is active
+Alias=ipfire.ovpn.statusreport.get[]:ipfire.ovpn.statusreport.get
\ No newline at end of file