Add support for MidnightBSD to a number of plugins

Build.PL

@@ -236,8 +236,11 @@ if ( not $build->install_path('plugins') ) {
 
 $plugins_files->{'plugins/plugin.sh'} = 'plugins/plugin.sh';
 
+# MidnightBSD is similar to FreeBSD, so we also want to include FreeBSD specific plugins here.
+my $os = $^O;
+$os =~ s/midnightbsd/freebsd/;
 File::Find::find( { wanted => \&_find_plugins_wanted },
-    'plugins/node.d', "plugins/node.d.$^O" );
+    'plugins/node.d', "plugins/node.d.$os" );
 
 sub _find_plugins_wanted {
 

doc/installation/install.rst

@@ -100,6 +100,23 @@ You will have to enable the services in systemd to get them up and running.
 Likely you will have to fix SELinux issues when using 3rd-Party plugins and SELinux active and set to *enforcing mode* on the Munin node.
 In case you get competent and friendly support on `SELinux mailinglist <https://admin.fedoraproject.org/mailman/listinfo/selinux>`_.
 
+MidnightBSD
+-------
+
+From source:
+
+.. code-block:: bash
+
+ cd /usr/mports/sysutils/munin-master && make install clean
+ cd /usr/mports/sysutils/munin-node && make install clean
+
+Binary packages:
+
+.. code-block:: bash
+
+ mport install munin-master
+ mport install munin-node
+
 Other systems
 -------------
 

plugins/node.d.freebsd/cpu

@@ -34,12 +34,11 @@ if [ "$1" = "autoconf" ]; then
 fi
 
 if [ "$1" = "config" ]; then
-
 	OSV=`$SYSCTL_BIN -n kern.osrelease | cut -f1 -d.`
-	if [ "$OSV" = "4" ]; then
-		STATUNITS=`$SYSCTL_BIN -n kern.clockrate | cut -f16 -d' '`
-	elif [ "$OSV" -ge "5" ]; then
+	if [ "$(uname -s)" = "MidnightBSD" ] || [ "$OSV" -ge "5" ]; then
 		STATUNITS=`$SYSCTL_BIN -n kern.clockrate | cut -f13 -d' '`
+	elif [ "$OSV" = "4" ]; then
+		STATUNITS=`$SYSCTL_BIN -n kern.clockrate | cut -f16 -d' '`
 	fi
 	PERCENT=`$SYSCTL_BIN -n hw.ncpu | awk '{print ($1)*100}'`
 	NCPU=`$SYSCTL_BIN -n hw.ncpu`

plugins/node.d.freebsd/systat

@@ -50,7 +50,7 @@ EOF
 	    exit 0
 	fi
 	ostype=`uname -s`
-	if [ ${ostype} = "FreeBSD" ]; then
+	if [ ${ostype} = "FreeBSD" ] || [ ${ostype} = "MidnightBSD" ]; then
 	    echo "yes"
 	    exit 0
 	fi

plugins/node.d.freebsd/vmstat

@@ -20,7 +20,7 @@
 OSV=`/sbin/sysctl -n kern.osrelease | cut -f1 -d.`
 
 if [ "$1" = "autoconf" ]; then
-	if [ "$OSV" -ge "5" ]; then
+	if [ $(uname -s) = "MidnightBSD" ] || [ "$OSV" -ge "5" ]; then
 		/sbin/sysctl -n vm.vmtotal 2>/dev/null >/dev/null
 		RESULT=$?
 		NAME=/sbin/sysctl
@@ -49,7 +49,7 @@ if [ "$1" = "config" ]; then
 	echo 'graph_vlabel process states'
 	echo 'graph_category processes'
 	echo 'graph_info This graph shows number of processes in each state.'
-	if [ "$OSV" -ge "5" ]; then
+	if [ $(uname -s) = "MidnightBSD" ] || [ "$OSV" -ge "5" ]; then
 		echo 'running.label running'
 		echo 'running.info processes on CPU or waiting for CPU'
 		echo 'running.type GAUGE'
@@ -71,7 +71,7 @@ if [ "$1" = "config" ]; then
 	exit 0
 fi
 
-if [ "$OSV" -ge "5" ]; then
+if [ $(uname -s) = "MidnightBSD" ] || [ "$OSV" -ge "5" ]; then
 	/sbin/sysctl -n vm.vmtotal | /usr/bin/awk '
 /^Processes:/ {
 	print "running.value", $3;

plugins/node.d/hddtemp_smartctl

@@ -183,7 +183,7 @@ if ($^O eq 'linux') {
   # Get list of all drives we found
   @drives=(@drivesIDE,@drivesSCSI,@drivesNVME);
 
-} elsif ($^O eq 'freebsd') {
+} elsif (($^O eq 'freebsd') || ($^O eq 'midnightbsd')) {
   opendir(DEV, '/dev');
   @drives = grep /^(ada?|da)[0-9]+$/, readdir DEV;
   closedir(DEV);

plugins/node.d/processes

@@ -72,7 +72,7 @@ OPERSYS=${OPERSYS:-$(uname | cut -f 1 -d _)}
 
 if [ "$1" = "autoconf" ]; then
     case "$OPERSYS" in
-        Linux|SunOS|FreeBSD|OpenBSD|NetBSD|Darwin|CYGWIN)
+        Linux|SunOS|FreeBSD|OpenBSD|NetBSD|Darwin|CYGWIN|MidnightBSD)
             if ! "$ps" >/dev/null 2>/dev/null; then
                 echo "no (ps=$ps failed)"
             elif ! echo | "$awk" '{ print "Hei" }' >/dev/null 2>/dev/null; then
@@ -227,11 +227,25 @@ if [ "$1" = "config" ]; then
         echo "nonexistent.info The number of nonexistent processes."
         print_warning nonexistent
         print_critical nonexistent
+    elif [ "$OPERSYS" = "MidnightBSD" ]; then
+        echo "graph_order sleeping idle stopped zombie lock uninterruptible interrupt runnable processes"
+        echo "lock.label lock"
+        echo "lock.draw STACK"
+        echo "lock.colour $LOCK"
+        echo "lock.info The number of processes that are waiting to acquire a lock."
+        print_warning lock
+        print_critical lock
+        echo "interrupt.label interrupt"
+        echo "interrupt.draw STACK"
+        echo "interrupt.colour $INTERRUPT"
+        echo "interrupt.info The number of idle interrupt threads."
+        print_warning interrupt
+        print_critical interrupt
     fi
 
     # Common flags for some OS
     if [ "$OPERSYS" = "FreeBSD" ] || [ "$OPERSYS" = "OpenBSD" ] ||
-    [ "$OPERSYS" = "NetBSD" ] || [ "$OPERSYS" = "Darwin" ]; then
+    [ "$OPERSYS" = "NetBSD" ] || [ "$OPERSYS" = "Darwin" ] || [ "$OPERSYS" = "MidnightBSD" ]; then
         echo "idle.label idle"
         echo "idle.draw STACK"
         echo "idle.colour $IDLE"
@@ -267,7 +281,7 @@ if [ "$1" = "config" ]; then
     fi
 
     if [ "$OPERSYS" = "Linux" ] || [ "$OPERSYS" = "FreeBSD" ] ||
-    [ "$OPERSYS" = "OpenBSD" ] || [ "$OPERSYS" = "NetBSD" ]; then
+    [ "$OPERSYS" = "OpenBSD" ] || [ "$OPERSYS" = "NetBSD" ] || [ "$OPERSYS" = "MidnightBSD" ]; then
         echo "uninterruptible.label uninterruptible"
         echo "uninterruptible.draw STACK"
         echo "uninterruptible.colour $UNINTERRUPTIBLE"
@@ -344,7 +358,7 @@ print "runnable.value " 0+stat["R"];
 print "stopped.value "  0+stat["T"];
 print "zombie.value "   0+stat["Z"];
 }'
-elif [ "$OPERSYS" = "FreeBSD" ]; then
+elif [ "$OPERSYS" = "FreeBSD" ] || [ "$OPERSYS" = "MidnightBSD" ]; then
     # shellcheck disable=SC2016
     "$ps" -axo state= | sed -e 's/^\(.\).*/\1/' | "$awk" '
 { processes++; stat[$1]++ }

plugins/node.d/smart_

@@ -572,7 +572,7 @@ def find_smart_drives():
                     continue
         except Exception as exc:
             verboselog('Failed to list OpenBSD disks: {}'.format(exc))
-    elif os.uname()[0] == "FreeBSD":
+    elif os.uname()[0] in {"FreeBSD", "MidnightBSD"}:
         try:
             sysctl_kerndisks = os.popen('sysctl kern.disks')
             kerndisks = sysctl_kerndisks.readline().strip()
@@ -588,7 +588,7 @@ def find_smart_drives():
                 except Exception:
                     continue
         except Exception as exc:
-            verboselog('Failed to list FreeBSD disks: {}'.format(exc))
+            verboselog('Failed to list {} disks: {}'.format(os.uname()[0], exc))
     elif os.uname()[0] == "Darwin":
         try:
             from glob import glob