feat: add Dockerfile, docker-compose.yml, entrypoint and example configs

run-prtgmpprobe.sh

@@ -0,0 +1,89 @@
+#!/bin/bash
+set -eu
+
+error() {
+    echo >&2 "Error: $*"
+}
+
+#################
+
+PRTGMPPROBE__BINARY=/opt/paessler/mpprobe/prtgmpprobe
+
+_passthrough=0
+for _arg in "$@"
+do
+    case "$_arg" in
+        --help|example-config)
+            _passthrough=1
+        ;;
+    esac
+done
+if [ ! $_passthrough -eq 0 ] ; then
+    exec gosu paessler_mpprobe:paessler_mpprobe \
+        ${PRTGMPPROBE__BINARY} \
+        "$@"
+fi
+
+PRTGMPPROBE__CONFIG_FILE=${PRTGMPPROBE__CONFIG_FILE:-/config/config.yml} # needs to be provided by user
+PRTGMPPROBE__ID_FILE=${PRTGMPPROBE__ID_FILE:-/config/id.txt}
+
+for _var in PRTGMPPROBE__ACCESS_KEY \
+            PRTGMPPROBE__NATS__AUTHENTICATION__USER \
+            PRTGMPPROBE__NATS__AUTHENTICATION__PASSWORD
+do
+    if [ -n "${!_var-}" ] ; then
+        error "Setting ${_var} = ${!_var-} as environment variable is insecure. Please set any security related variables inside ${PRTGMPPROBE__CONFIG_FILE}."
+        echo >&2 " "
+        echo >&2 "Example:"
+        ${PRTGMPPROBE__BINARY} example-config >&2
+        exit 1
+    fi
+done
+
+# Handling Env vars
+
+# Get/Generate a probe id from PRTGMPPROBE__ID_FILE or from PRTGMPPROBE__ID
+if [ -z "${PRTGMPPROBE__ID-}" ] ; then
+    if [ ! -f "${PRTGMPPROBE__ID_FILE}" ] ; then
+        cat /proc/sys/kernel/random/uuid > ${PRTGMPPROBE__ID_FILE} || (
+            error "Unable to write to ${PRTGMPPROBE__ID_FILE}. Please either set PRTGMPPROBE__ID in the container environment or make sure the location ${PRTGMPPROBE__ID_FILE} is writable."
+            echo >&2 " "
+            echo >&2 "Example:"
+            echo >&2 "PRTGMPPROBE__ID=$(cat /proc/sys/kernel/random/uuid)"
+            exit 1
+        )
+    fi
+    PRTGMPPROBE__ID=$(cat ${PRTGMPPROBE__ID_FILE})
+    export PRTGMPPROBE__ID
+fi
+
+export PRTGMPPROBE__NAME=${PRTGMPPROBE__NAME:-"multi-platform-probe@$(hostname)"}
+
+export PRTGMPPROBE__MOMO__DIR=${PRTGMPPROBE__MOMO__DIR:-/opt/paessler/mpprobe/monitoringmodules/}
+export PRTGMPPROBE__MAX_SCHEDULING_DELAY=${PRTGMPPROBE__MAX_SCHEDULING_DELAY:-300}
+export PRTGMPPROBE__HEARTBEAT_INTERVAL=${PRTGMPPROBE__HEARTBEAT_INTERVAL:-30}
+export PRTGMPPROBE__NATS__CLIENT_NAME=${PRTGMPPROBE__NATS__CLIENT_NAME:-${PRTGMPPROBE__NAME}}
+
+# Containers don't have journald available
+export PRTGMPPROBE__LOGGING__CONSOLE__LEVEL=${PRTGMPPROBE__LOGGING__CONSOLE__LEVEL:-"info"}
+export PRTGMPPROBE__LOGGING__CONSOLE__WITHOUT_TIME=${PRTGMPPROBE__LOGGING__CONSOLE__WITHOUT_TIME:-"true"}
+export PRTGMPPROBE__LOGGING__JOURNALD__LEVEL=${PRTGMPPROBE__LOGGING__JOURNALD__FIELD_PREFIX:-"off"}
+export PRTGMPPROBE__LOGGING__JOURNALD__FIELD_PREFIX=${PRTGMPPROBE__LOGGING__JOURNALD__FIELD_PREFIX:-"PRTGMPPROBE"}
+
+if [ ! -f "${PRTGMPPROBE__CONFIG_FILE}" ] ; then
+    error "Configuration file ${PRTGMPPROBE__CONFIG_FILE} does not exist. Please create one."
+    echo >&2 " "
+    echo >&2 "Example:"
+    ${PRTGMPPROBE__BINARY} example-config >&2
+    exit 1
+fi
+
+env | grep PRTGMPPROBE__ >&2
+
+# add capabilities for icmp to the probe executable
+setcap cap_net_admin,cap_net_raw+eip ${PRTGMPPROBE__BINARY} || true
+
+exec gosu paessler_mpprobe:paessler_mpprobe \
+    ${PRTGMPPROBE__BINARY} \
+    --config ${PRTGMPPROBE__CONFIG_FILE} \
+    "$@"