reorganized common repo, some minor modules improvements

repo/common/cmk/check_mk

@@ -0,0 +1,39 @@
+# Copyright (C) 2019 tribe29 GmbH - License: GNU General Public License v2
+# This file is part of Checkmk (https://checkmk.com). It is subject to the terms and
+# conditions defined in the file COPYING, which is part of this source code package.
+
+service check_mk
+{
+	type           = UNLISTED
+	port           = 6556
+	socket_type    = stream
+	protocol       = tcp
+	wait           = no
+	user           = root
+	server         = /usr/bin/check_mk_agent
+
+        # To avoid intentional or unintentional overload due to too many parallel
+        # queries from one source we set this parameter. It limits the number of
+        # concurrent connections per source address. If you need more requests
+        # per source system, you can of course increase or remove this value
+        # (https://github.com/tribe29/checkmk/pull/157)
+        per_source     = 3
+
+        # listen on IPv4 AND IPv6 when available on this host
+        #flags          = IPv6
+
+	# If you use fully redundant monitoring and poll the client
+	# from more then one monitoring servers in parallel you might
+	# want to use the agent cache wrapper:
+	#server         = /usr/bin/check_mk_caching_agent
+
+	# configure the IP address(es) of your Nagios server here:
+	only_from      = 127.0.0.1 192.168.1.201
+
+	# Don't be too verbose. Don't log every check. This might be
+	# commented out for debugging. If this option is commented out
+	# the default options will be used for this service.
+	log_on_success =
+
+	disable        = no
+}

repo/common/cmk/mk_apt

@@ -0,0 +1,53 @@
+#!/bin/bash
+# Copyright (C) 2019 tribe29 GmbH - License: GNU General Public License v2
+# This file is part of Checkmk (https://checkmk.com). It is subject to the terms and
+# conditions defined in the file COPYING, which is part of this source code package.
+
+# Reason for this no-op: shellcheck disable=... before the first command disables the error for the
+# entire script.
+:
+
+# Disable unused variable error (needed to keep track of version)
+# shellcheck disable=SC2034
+CMK_VERSION="2.0.0p3"
+
+# Check for APT updates (Debian, Ubuntu)
+# TODO:
+# Einstellungen:
+# - upgrade oder dist-upgrade
+# - vorher ein update machen
+# Bakery:
+# - Bakelet anlegen
+# - Async-Zeit einstellbar machen und das Ding immer async laufen lassen
+# Check programmieren:
+#   * Schwellwerte auf Anzahlen
+#   * Regexen auf Pakete, die zu CRIT/WARN führen
+# - Graph malen mit zwei Kurven
+
+# This variable can either be "upgrade" or "dist-upgrade"
+UPGRADE=upgrade
+DO_UPDATE=yes
+
+
+function check_apt_update {
+    if [ "$DO_UPDATE" = yes ] ; then
+        # NOTE: Even with -qq, apt-get update can output several lines to
+        # stderr, e.g.:
+        #
+        # W: There is no public key available for the following key IDs:
+        # 1397BC53640DB551
+        apt-get update -qq 2> /dev/null
+    fi
+    apt-get -o 'Debug::NoLocking=true' -o 'APT::Get::Show-User-Simulation-Note=false' -s -qq "$UPGRADE" | grep -v '^Conf'
+}
+
+
+if type apt-get > /dev/null ; then
+    echo '<<<apt:sep(0)>>>'
+    out=$(check_apt_update)
+    if [ -z "$out" ]; then
+        echo "No updates pending for installation"
+    else
+        echo "$out"
+    fi
+fi