Adding bin/create-motd.sh

diff --git a/bin/create-motd.sh b/bin/create-motd.sh
new file mode 100755 (executable)
index 0000000..d398457
--- /dev/null
+++ b/bin/create-motd.sh
@@ -0,0 +1,434 @@
+#!/bin/bash
+#
+# Author: Frank Brehm <frank.brehm@pixelpark.com>
+#
+
+#
+# Generating /etc/motd like:
+#
+# +----------------------------------------------------------------+
+# | Nodename:    cobbler         Purpose:   Cobbler Install Server |
+# | Domain:      pixelpark.com   Location:  L105                   |
+# | Network:     192.168.88.8    Owner:     Pixelpark GmbH         |
+# | Hardware:    vmware (x86_64) Contact:   8x5@pixelpark.com      |
+# | OS:          CentOS 7.5.1804 Zone-Host: VMWare                 |
+# | Puppet Env:  test            Customer:  pixelpark              |
+# | Puppet Role: default         Project:   cobbler                |
+# +----------------------------------------------------------------+
+#
+
+set -e
+set -u
+
+export LC_ALL="en_US.utf8"
+export LANG="en_US.utf8"
+
+VERBOSE="n"
+DEBUG="n"
+QUIET='n'
+
+VERSION="0.9.9"
+
+BASENAME="$(basename ${0})"
+BASE_DIR="$(dirname ${0})"
+IP=
+
+#------------------------------------------------------------------------------
+get_ip() {
+    local iface=
+
+    IP=
+
+    for iface in $( ip -oneline link show | grep '^[^ ]' | tail -n +2 | awk '{print $2}' | sed -e 's/:$//' ); do
+
+        IP=$( ip -oneline addr show dev eth0 | \
+              grep -P -o '\s+inet\s+(\S+)' | \
+              head -n 1 | \
+              sed -e 's/[      ]*inet[         ][      ]*//' -e 's|/.*||' )
+        if [[ -n "${IP}" ]] ; then
+            break
+        fi
+
+    done
+
+}
+
+NODENAME=$(hostname -s)
+PURPOSE="VMWare Template"
+DOMAIN=$(hostname --fqdn | cut -d. -f 2- )
+LOCATION="L105"
+get_ip
+HARDWARE=$( uname -p )
+OWNER="Digitas Pixelpark GmbH"
+CONTACT="8x5@pixelpark.com"
+COMMENTS=
+ZONE="N/A"
+OS_NAME=$( cat /etc/os-release | grep '^PRETTY_NAME' | awk -F= '{print $2}' | sed -e 's/^"//' -e 's/"$//' )
+KERNEL=$( uname -r | cut -d. -f1,2,3 )
+PUPPET_CUSTOMER="pixelpark"
+PUPPET_PROJECT="<undefined>"
+PUPPET_ENV="${system_status:-development}"
+PUPPET_ROLE="default"
+
+#------------------------------------------------------------------------------
+description() {
+    cat <<-EOF
+       Prints out an initial version of a MOTD.
+       EOF
+
+}
+
+#------------------------------------------------------------------------------
+usage() {
+    cat <<-EOF
+       Usage: ${BASENAME} [-d|--debug] [-v|--verbose] [--nocolor] [<Other options>]
+              ${BASENAME} [-h|--help]
+              ${BASENAME} [-V|--version]
+
+           Options:
+               -n|--node NODENAME
+                               The nodename in the MOTD, Default: '${NODENAME}'.
+               -p|--purpose PURPOSE
+                               The purpose in the MOTD, Default: '${PURPOSE}'.
+               -D|--domain DOMAIN
+                               The domain the MOTD, Default: '${DOMAIN}'.
+               -l|--location LOCATION
+                               The location in the MOTD, Default: '${LOCATION}'.
+               -i|--ip IP      The IP address in the MOTD, Default: '${IP}'.
+               -H|--hardware HARDWARE
+                               The type of hardware, Default: '${HARDWARE}'.
+               -o|--owner OWNER
+                               The owning Customer if this host, Default: '${OWNER}'.
+               -e|--email EMAIL_ADDRESS
+                               The E-Mail-Address of the responsible Person
+                               or Mailgroup, Default: <${CONTACT}>.
+               -c|--comments COMMENTS
+                               Some additional comments to this machine.
+               -z|--zone ZONE_HOST
+                               The containing zone host of this zone, VM or container, Default: '${ZONE}'.
+               -C|--customer PUPPET_CUSTOMER
+                               The hiera customer used for Puppet, Default: '${PUPPET_CUSTOMER}'.
+               -P|--project PUPPET_PROJECT
+                               The hiera project below the customer used for Puppet, Default: '${PUPPET_PROJECT}'.
+               -E|--env|--environment ENVIRONMENT
+                               The Puppet Environment, Default: '${PUPPET_ENV}'.
+               -R|--role ROLE  The Puppet Role, Default: '${PUPPET_ROLE}'.
+               -d|--debug      Debug output (bash -x).
+               -v|--verbose    Set verbosity on.
+               -h|--help       Show this output and exit.
+               -V|--version    prints out version number of the script and exit
+       EOF
+}
+
+#------------------------------------------------------------------------------
+get_options() {
+
+    local tmp=
+    local base_dir=
+    local short_options="n:p:D:l:i:H:o:e:c:z:C:P:E:R:dvhV"
+    local long_options="node:,purpose:,domain:,location:,ip:,hardware:,owner:,"
+    long_options+="email:,comments:,zone:,customer:,project:,env:,environment:,role;,"
+    long_options+="debug,verbose,help,version"
+
+    set +e
+    tmp=$( getopt -o "${short_options}" --long "${long_options}" -n "${BASENAME}" -- "$@" )
+    if [[ $? != 0 ]] ; then
+        echo "" >&2
+        usage >&2
+        exit 1
+    fi
+    set -e
+
+    # Note the quotes around `$TEMP': they are essential!
+    eval set -- "${tmp}"
+
+    local p=
+
+    while true ; do
+        case "$1" in
+            -n|--node)
+                NODENAME="$2"
+                shift
+                shift
+                ;;
+            -p|--purpose)
+                PURPOSE="$2"
+                shift
+                shift
+                ;;
+            -D|--domain)
+                DOMAIN="$2"
+                shift
+                shift
+                ;;
+            -l|--location)
+                LOCATION="$2"
+                shift
+                shift
+                ;;
+            -i|--ip)
+                IP="$2"
+                shift
+                shift
+                ;;
+            -H|--hardware)
+                HARDWARE="$2"
+                shift
+                shift
+                ;;
+            -o|--owner)
+                OWNER="$2"
+                shift
+                shift
+                ;;
+            -e|--email)
+                CONTACT="$2"
+                shift
+                shift
+                ;;
+            -c|--comments)
+                COMMENTS="$2"
+                shift
+                shift
+                ;;
+            -z|--zone)
+                ZONE="$2"
+                shift
+                shift
+                ;;
+            -C|--customer)
+                PUPPET_CUSTOMER="$2"
+                shift
+                shift
+                ;;
+            -P|--project)
+                PUPPET_PROJECT="$2"
+                shift
+                shift
+                ;;
+            -E|--env|--environment)
+                PUPPET_ENV="$2"
+                shift
+                shift
+                ;;
+            -R|--role)
+                PUPPET_ROLE="$2"
+                shift
+                shift
+                ;;
+            -d|--debug)
+                DEBUG="y"
+                shift
+                ;;
+            -v|--verbose)
+                VERBOSE="y"
+                shift
+                ;;
+            -h|--help)
+                description
+                echo
+                usage
+                exit 0
+                ;;
+            -V|--version)
+                echo "${BASENAME} version: ${VERSION}"
+                exit 0
+                ;;
+            --) shift
+                break
+                ;;
+            *)  echo "Internal error!"
+                exit 1
+                ;;
+        esac
+    done
+
+    if [[ "${DEBUG}" = "y" ]] ; then
+        set -x
+    fi
+
+}
+
+#########################################
+# Some often used funktions
+
+#------------------------------------------------------------------------------
+my_date() {
+    date --rfc-3339=seconds
+}
+
+#------------------------------------------------------------------------------
+debug() {
+    if [[ "${VERBOSE}" != "y" ]] ; then
+        return 0
+    fi
+    echo -e " * [$(my_date)] [${BASENAME}:DEBUG]: $@"
+}
+
+#------------------------------------------------------------------------------
+info() {
+    if [[ "${QUIET}" == "y" ]] ; then
+        return 0
+    fi
+    echo -e " * [$(my_date)] [${BASENAME}:INFO] : $@"
+}
+
+#------------------------------------------------------------------------------
+warn() {
+    echo -e " * [$(my_date)] [${BASENAME}:WARN] : $@" >&2
+}
+
+#------------------------------------------------------------------------------
+error() {
+    echo -e " * [$(my_date)] [${BASENAME}:ERROR]: $@" >&2
+}
+
+#------------------------------------------------------------------------------
+empty_line() {
+    if [[ "${QUIET}" == "y" ]] ; then
+        return 0
+    fi
+    echo
+}
+
+#------------------------------------------------------------------------------
+
+generate() {
+
+    local -a left=()
+    local -a right=()
+    local -a lines=()
+
+    local text=
+
+    info "Generating a new /etc/motd (Message of the day) ..." >&2
+
+    # Texte linke Spalte
+    text="Nodename:    ${NODENAME}"
+    left+=("${text}")
+
+    text="Domain:      ${DOMAIN}"
+    left+=("${text}")
+
+    text="Network:     ${IP}"
+    left+=("${text}")
+
+    text="Hardware:    ${HARDWARE}"
+    left+=("${text}")
+
+    text="OS:          ${OS_NAME} (${KERNEL})"
+    left+=("${text}")
+
+    text="Puppet Env:  ${PUPPET_ENV}"
+    left+=("${text}")
+
+    text="Puppet Role: ${PUPPET_ROLE}"
+    left+=("${text}")
+
+    # Texte rechte Spalte
+    text="Purpose:   ${PURPOSE}"
+    right+=("${text}")
+
+    text="Location:  ${LOCATION}"
+    right+=("${text}")
+
+    text="Owner:     ${OWNER}"
+    right+=("${text}")
+
+    text="Contact:   ${CONTACT}"
+    right+=("${text}")
+
+    text="Zone-Host: ${ZONE}"
+    right+=("${text}")
+
+    text="Customer:  ${PUPPET_CUSTOMER}"
+    right+=("${text}")
+
+    text="Project:   ${PUPPET_PROJECT}"
+    right+=("${text}")
+
+    local length=
+    local max_left="1"
+    local max_right="1"
+    local max="1"
+
+    for text in "${left[@]}" ; do
+        length=$( printf "${text}" | wc -c )
+        if [[ "${length}" -gt "${max_left}" ]] ; then
+            max_left="${length}"
+        fi
+    done
+    if [[ "${VERBOSE}" == "y" ]] ; then
+        echo "Max. length left: ${max_left}" >&2
+    fi
+
+    for text in "${right[@]}" ; do
+        length=$( printf "${text}" | wc -c )
+        if [[ "${length}" -gt "${max_right}" ]] ; then
+            max_right="${length}"
+        fi
+    done
+    if [[ "${VERBOSE}" == "y" ]] ; then
+        echo "Max. length right: ${max_right}" >&2
+    fi
+
+    local i=
+    for i in 0 1 2 3 4 5 6 ; do
+        text=$( printf "%-*s %-*s" "${max_left}"  "${left[${i}]}" \
+                                   "${max_right}" "${right[${i}]}" )
+        lines+=("${text}")
+        length=$( printf "${text}" | wc -c )
+        if [[ "${length}" -gt "${max}" ]] ; then
+            max="${length}"
+        fi
+    done
+    if [[ -n "${COMMENTS}" ]] ; then
+        text="Comments: ${COMMENTS}"
+        lines+=("${text}")
+        length=$( printf "${text}" | wc -c )
+        if [[ "${length}" -gt "${max}" ]] ; then
+            max="${length}"
+        fi
+    fi
+    if [[ "${VERBOSE}" == "y" ]] ; then
+        echo "Max. line length: ${max}" >&2
+    fi
+
+    local ruler="+"
+    local i=0
+    local ruler_length=$(( ${max} + 2 ))
+    while [[ "${i}" -lt "${ruler_length}" ]] ; do
+        i=$(( $i + 1 ))
+        ruler+="-"
+    done
+    ruler+="+"
+
+    echo "${ruler}"
+    for text in "${lines[@]}" ; do
+        printf "| %-*s |\n" ${max} "${text}"
+    done
+    echo "${ruler}"
+    echo
+
+}
+
+################################################################################
+##
+## Main
+##
+################################################################################
+
+#------------------------------------------------------------------------------
+main() {
+
+    get_options "$@"
+    generate
+
+}
+
+main "$@"
+
+exit 0
+
+
+# vim: ts=4 et list