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admin-stuff/change_munin_ip.sh

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#!/usr/bin/env bash
script_name="$(basename $(realpath $0))"
working_dir="$(dirname $(realpath $0))"
conf_file="${working_dir}/conf/${script_name%%.*}.conf"
LOCK_DIR="/tmp/${script_name%%.*}.LOCK"
log_file="${LOCK_DIR}/${script_name%%.*}.log"
# ----------
# Base Function(s)
# ----------
clean_up() {
# Perform program exit housekeeping
rm -rf "$LOCK_DIR"
blank_line
exit $1
}
echononl(){
if $terminal ; then
echo X\\c > /tmp/shprompt$$
if [ `wc -c /tmp/shprompt$$ | awk '{print $1}'` -eq 1 ]; then
echo -e -n " $*\\c" 1>&2
else
echo -e -n " $*" 1>&2
fi
rm /tmp/shprompt$$
fi
}
fatal(){
echo ""
if $terminal ; then
echo -e " [ \033[31m\033[1mFatal\033[m ]: $*"
echo ""
echo -e " \033[31m\033[1mScript was interupted\033[m!"
else
echo " [ Fatal ]: $*"
echo ""
echo " Script was terminated...."
fi
echo ""
clean_up 1
}
error (){
echo ""
if $terminal ; then
echo -e " [ \033[31m\033[1mError\033[m ]: $*"
else
echo "[ Error ]: $*"
fi
echo ""
}
warn (){
echo ""
if $terminal ; then
echo -e " [ \033[33m\033[1mWarning\033[m ]: $*"
else
echo "[ Warning ]: $*"
fi
echo ""
}
warn_only_terminal () {
if $terminal ; then
echo ""
echo -e "\t[ \033[33m\033[1mWarning\033[m ]: $*"
echo ""
fi
}
info (){
if $terminal ; then
echo ""
echo -e " [ \033[32m\033[1mInfo\033[m ] $*"
echo ""
fi
}
ok (){
if $terminal ; then
echo ""
echo -e " [ \033[32m\033[1mOk\033[m ] $*"
echo ""
fi
}
echo_done() {
if $terminal ; then
echo -e "\033[75G[ \033[32mdone\033[m ]"
fi
}
echo_ok() {
if $terminal ; then
echo -e "\033[75G[ \033[32mok\033[m ]"
fi
}
echo_warn() {
if $terminal ; then
echo -e "\033[75G[ \033[33mwarn\033[m ]"
fi
}
echo_failed(){
if $terminal ; then
echo -e "\033[75G[ \033[1;31mfailed\033[m ]"
fi
}
echo_skipped() {
if $terminal ; then
echo -e "\033[75G[ \033[90m\033[1mskipped\033[m ]"
fi
}
echo_wait(){
if $terminal ; then
echo -en "\033[75G[ \033[5m\033[1m...\033[m ]"
fi
}
trim() {
local var="$*"
var="${var#"${var%%[![:space:]]*}"}" # remove leading whitespace characters
var="${var%"${var##*[![:space:]]}"}" # remove trailing whitespace characters
echo -n "$var"
}
blank_line() {
if $terminal ; then
echo ""
fi
}
containsElement () {
local e
for e in "${@:2}"; do [[ "$e" == "$1" ]] && return 0; done
return 1
}
is_number() {
return $(test ! -z "${1##*[!0-9]*}" > /dev/null 2>&1);
# - also possible
# -
#[[ ! -z "${1##*[!0-9]*}" ]] && return 0 || return 1
#return $([[ ! -z "${1##*[!0-9]*}" ]])
}
is_valid_ipv4() {
local -a octets=( ${1//\./ } )
local RETURNVALUE=0
# return an error if the IP doesn't have exactly 4 octets
[[ ${#octets[@]} -ne 4 ]] && return 1
for octet in ${octets[@]}
do
if [[ ${octet} =~ ^[0-9]{1,3}$ ]]
then # shift number by 8 bits, anything larger than 255 will be > 0
((RETURNVALUE += octet>>8 ))
else # octet wasn't numeric, return error
return 1
fi
done
return ${RETURNVALUE}
}
# - Test if given argument is a valid IPv6 Address
# -
#is_valid_ipv6() {
# local _ipv6=$1
#
# if [ "$1" != "${1#[0-9a-f]*:}" ] \
# && [ "$1" = "${1#*[^0-9a-f:]}" ] \
# && [ "${1#*[0-9A-Fa-f][0-9A-Fa-f][0-9A-Fa-f][0-9A-Fa-f][0-9A-Fa-f]}" = "${1#*:*:*:*:*:*:*:*:*:}" ]; then
# return 0
# else
# return 1
# fi
#}
is_valid_ipv6() {
local _ipv6="$1"
_regex_ipv6='^([0-9a-fA-F]{0,4}:){1,7}[0-9a-fA-F]{0,4}$'
if [[ "$_ipv6" =~ ${_regex_ipv6} ]]; then
return 0
else
return 1
fi
}
# ----------
# Some checks ..
# ----------
# - Running in a terminal?
# -
if [[ -t 1 ]] ; then
terminal=true
else
terminal=false
fi
# ----------
# Default Values
# ----------
BATCH_MODE=false
DEFAULT_MUNIN_CONF_FILE='/etc/munin/munin-node.conf'
DEFAULT_IPT_FIREWALL_MAIN_IPV4_FILE='/etc/ipt-firewall/main_ipv4.conf'
DEFAULT_IPT_FIREWALL_MAIN_IPV6_FILE='/etc/ipt-firewall/main_ipv6.conf'
# ----------
# Read Configuration
# ----------
if [[ -f "$conf_file" ]]; then
source "$conf_file"
else
warn_only_terminal "No configuration file '$conf_file' present.\n
Loading default values.."
fi
# ----------
# Read commandline parameter
# ----------
while getopts bh opt ; do
case $opt in
b) BATCH_MODE=true
;;
h) usage
;;
\?) usage ;;
esac
done
if [[ -n "${IPv4_ADDRESS_OLD}" ]] ; then
_IPv4_ADDRESS_OLD="${IPv4_ADDRESS_OLD}"
fi
if [[ -n "${IPv6_ADDRESS_OLD}" ]] ; then
_IPv6_ADDRESS_OLD="${IPv6_ADDRESS_OLD}"
fi
if [[ -n "${IPv4_ADDRESS_NEW}" ]] ; then
_IPv4_ADDRESS_NEW="${IPv4_ADDRESS_NEW}"
fi
if [[ -n "${IPv6_ADDRESS_NEW}" ]] ; then
_IPv6_ADDRESS_NEW="${IPv6_ADDRESS_NEW}"
fi
if [[ -z "${MUNIN_CONF_FILE}" ]]; then
MUNIN_CONF_FILE="${DEFAULT_MUNIN_CONF_FILE}"
fi
if ${BATCH_MODE} && ( [[ -z "${IPv4_ADDRESS_OLD}" ]] || [[ -z "${IPv4_ADDRESS_NEW}" ]] \
|| [[ -z "${IPv6_ADDRESS_OLD}" ]] || [[ -z "${IPv6_ADDRESS_NEW}" ]] ) ; then
[[ -z "${IPv4_ADDRESS_OLD}" ]] && fatal "Variable 'IPv4_ADDRESS_OLD' is empty and we are in batch mode!"
[[ -z "${IPv4_ADDRESS_NEW}" ]] && fatal "Variable 'IPv4_ADDRESS_NEW' is empty and we are in batch mode!"
[[ -z "${IPv6_ADDRESS_OLD}" ]] && fatal "Variable 'IPv6_ADDRESS_OLD' is empty and we are in batch mode!"
[[ -z "${IPv6_ADDRESS_NEW}" ]] && fatal "Variable 'IPv6_ADDRESS_NEW' is empty and we are in batch mode!"
fatal "Something wired went wrong.."
fi
if ! ${BATCH_MODE} ; then
echo ""
echo -e "\033[32m--\033[m"
echo ""
echo "Insert IPv4-Address which do you want to change (old address)."
echo ""
echo -e "Type \"\033[33mNone\033[m\" if no IPv4 address should be changed."
echo ""
IPv4_ADDRESS_OLD=
_set_ipv4=true
while [ "X$IPv4_ADDRESS_OLD" = "X" ]; do
if [[ -z "${_IPv4_ADDRESS_OLD}" ]]; then
echononl "Old IPv4-Address: "
read IPv4_ADDRESS_OLD
## - To lower case
IPv4_ADDRESS_OLD=${IPv4_ADDRESS_OLD,,}
if [ "X$IPv4_ADDRESS_OLD" = "X" ]; then
echo -e "\n\t\033[33m\033[1mAn entry is required!\033[m\n"
IPv4_ADDRESS_OLD=""
continue
fi
else
echononl "Old IPv4-Address: [${_IPv4_ADDRESS_OLD}]: "
read IPv4_ADDRESS_OLD
## - To lower case
IPv4_ADDRESS_OLD=${IPv4_ADDRESS_OLD,,}
if [[ -z "$(trim ${IPv4_ADDRESS_OLD})" ]]; then
IPv4_ADDRESS_OLD=${_IPv4_ADDRESS_OLD}
fi
fi
if [ "${IPv4_ADDRESS_OLD,,}" = "none" ];then
_set_ipv4=false
break
fi
if ! is_valid_ipv4 $IPv4_ADDRESS_OLD ; then
echo -e "\n\t\033[33m\033[1m$IPv4_ADDRESS_OLD\033[m is NOT a valid IPv4 Address\n"
IPv4_ADDRESS_OLD=""
continue
fi
done
if $_set_ipv4 ; then
echo ""
echo -e "\033[32m--\033[m"
echo ""
echo "Insert IPv4-Address of the new munin server."
echo ""
IPv4_ADDRESS_NEW=
while [ "X$IPv4_ADDRESS_NEW" = "X" ]; do
if [[ -z "${_IPv4_ADDRESS_NEW}" ]]; then
echononl "New IPv4-Address: "
read IPv4_ADDRESS_NEW
## - To lower case
IPv4_ADDRESS_NEW=${IPv4_ADDRESS_NEW,,}
if [ "X$IPv4_ADDRESS_NEW" = "X" ]; then
echo -e "\n\t\033[33m\033[1mAn entry is required!\033[m\n"
IPv4_ADDRESS_NEW=""
continue
fi
else
echononl "New IPv4-Address [${_IPv4_ADDRESS_NEW}]: "
read IPv4_ADDRESS_NEW
## - To lower case
IPv4_ADDRESS_NEW=${IPv4_ADDRESS_NEW,,}
if [[ -z "$(trim ${IPv4_ADDRESS_NEW})" ]]; then
IPv4_ADDRESS_NEW=${_IPv4_ADDRESS_NEW}
fi
fi
if ! is_valid_ipv4 $IPv4_ADDRESS_NEW ; then
echo -e "\n\t\033[33m\033[1m$IPv4_ADDRESS_NEW\033[m is NOT a valid IPv4 Address\n"
IPv4_ADDRESS_NEW=""
continue
fi
done
fi
echo ""
echo -e "\033[32m--\033[m"
echo ""
echo "Insert IPv6-Address which do you want to change (old address)."
echo ""
echo -e "Type \"\033[33mnone\033[m\" if no IPv6 address should be changed."
echo ""
IPv6_ADDRESS_OLD=
_set_ipv6=true
while [ "X$IPv6_ADDRESS_OLD" = "X" ]; do
if [[ -z "${_IPv6_ADDRESS_OLD}" ]]; then
echononl "Old IPv6-Address: "
read IPv6_ADDRESS_OLD
## - To lower case
IPv6_ADDRESS_OLD=${IPv6_ADDRESS_OLD,,}
if [ "X$IPv6_ADDRESS_OLD" = "X" ]; then
echo -e "\n\t\033[33m\033[1mAn entry is required!\033[m\n"
IPv6_ADDRESS_OLD=""
continue
fi
else
echononl "Old IPv6-Address: [${_IPv6_ADDRESS_OLD}]: "
read IPv6_ADDRESS_OLD
## - To lower case
IPv6_ADDRESS_OLD=${IPv6_ADDRESS_OLD,,}
if [[ -z "$(trim ${IPv6_ADDRESS_OLD})" ]]; then
IPv6_ADDRESS_OLD=${_IPv6_ADDRESS_OLD}
fi
fi
if [ "${IPv6_ADDRESS_OLD,,}" = "none" ];then
_set_IPv6=false
break
fi
if ! is_valid_ipv6 $IPv6_ADDRESS_OLD ; then
echo -e "\n\tXX\033[33m\033[1m$IPv6_ADDRESS_OLD\033[mXX is NOT a valid IPv6 Address\n"
IPv6_ADDRESS_OLD=""
continue
fi
done
if $_set_ipv6 ; then
echo ""
echo -e "\033[32m--\033[m"
echo ""
echo "Insert IPv6-Address iof the new munin server"
echo ""
IPv6_ADDRESS_NEW=
while [ "X$IPv6_ADDRESS_NEW" = "X" ]; do
if [[ -z "${_IPv6_ADDRESS_NEW}" ]]; then
echononl "New IPv6-Address: "
read IPv6_ADDRESS_NEW
## - To lower case
IPv6_ADDRESS_NEW=${IPv6_ADDRESS_NEW,,}
if [ "X$IPv6_ADDRESS_NEW" = "X" ]; then
echo -e "\n\t\033[33m\033[1mAn entry is required!\033[m\n"
IPv6_ADDRESS_NEW=""
continue
fi
else
echononl "New IPv6-Address [${_IPv6_ADDRESS_NEW}]: "
read IPv6_ADDRESS_NEW
## - To lower case
IPv6_ADDRESS_NEW=${IPv6_ADDRESS_NEW,,}
if [[ -z "$(trim ${IPv6_ADDRESS_NEW})" ]]; then
IPv6_ADDRESS_NEW=${_IPv6_ADDRESS_NEW}
fi
fi
if ! is_valid_ipv6 $IPv6_ADDRESS_NEW ; then
echo -e "\n\t\033[33m\033[1m$IPv6_ADDRESS_NEW\033[m is NOT a valid IPv6 Address\n"
IPv6_ADDRESS_NEW=""
continue
fi
done
fi
fi
#clear
echo ""
echo ""
echo -e "\033[14G\033[32mReplace IP-Address(es) for munin server\033[m"
echo ""
if $_set_ipv4 ; then
echo " Old IPv4 Address...........................: $IPv4_ADDRESS_OLD"
echo " New IPv4 Address...........................: $IPv4_ADDRESS_NEW"
else
echo -e " IPv4 Address(es)...........................: \033[33mNone\033[m"
fi
echo ""
if $_set_ipv6 ; then
echo " Old IPv6 Address...........................: $IPv6_ADDRESS_OLD"
echo " New IPv6 Address...........................: $IPv6_ADDRESS_NEW"
else
echo -e " IPv6 Address(es)........................: \033[33mNone\033[m"
fi
echo ""
echo -e " Munin Node configuration file..............: \033[33m${MUNIN_CONF_FILE}\033[m"
echo -e " ipt firewall main IPv4 file................: \033[33m${IPT_FIREWALL_MAIN_IPV4_FILE}\033[m"
echo -e " ipt firewall main IPv6 file................: \033[33m${IPT_FIREWALL_MAIN_IPV6_FILE}\033[m"
echo ""
OK=
while [ "$OK" != "yes" -o "$OK" != "no" ] ; do
echononl "Parameters ok? [yes/no]: "
read OK
## - To lower case
OK=${OK,,}
if [ "X$OK" = "X" ]; then
echo -e "\n\t\033[33m\033[1mAn entry is required!\033[m\n"
OK=""
continue
fi
if [ "$OK" != "yes" -o "$OK" != "no" ] ; then
break
fi
echo -e "\n\t\033[33m\033[1mWrong entry!\033[m\n"
done
[[ $OK = "yes" ]] || fatal Repeat execution with different parameters
blank_line
blank_line
echononl " Replace ${IPv4_ADDRESS_OLD} in file '${MUNIN_CONF_FILE}'.."
if [[ -f "${MUNIN_CONF_FILE}" ]] ; then
if $(grep -q "${IPv4_ADDRESS_OLD}" "${MUNIN_CONF_FILE}" 2> /dev/null) ; then
perl -i -n -p -e "s#${IPv4_ADDRESS_OLD}#${IPv4_ADDRESS_NEW}#g" "${MUNIN_CONF_FILE}" > /dev/null 2>&1
if [[ $? -gt 0 ]]; then
echo_failed
else
echo_ok
fi
else
echo_skipped
fi
else
echo_skipped
fi
echononl " Replace ${IPv6_ADDRESS_OLD} in file '${MUNIN_CONF_FILE}'.."
if [[ -f "${MUNIN_CONF_FILE}" ]] ; then
if $(grep -q "${IPv6_ADDRESS_OLD}" "${MUNIN_CONF_FILE}" 2> /dev/null) ; then
perl -i -n -p -e "s#${IPv6_ADDRESS_OLD}#${IPv6_ADDRESS_NEW}#g" "${MUNIN_CONF_FILE}" > /dev/null 2>&1
if [[ $? -gt 0 ]]; then
echo_failed
else
echo_ok
fi
else
echo_skipped
fi
else
echo_skipped
fi
echononl " Replace ${IPv4_ADDRESS_OLD} in file '${IPT_FIREWALL_MAIN_IPV4_FILE}'.."
if [[ -f "${IPT_FIREWALL_MAIN_IPV4_FILE}" ]] ; then
if $(grep -q -E "munin_remote_ip=\"?${IPv4_ADDRESS_OLD}\"?" "${IPT_FIREWALL_MAIN_IPV4_FILE}" 2> /dev/null) ; then
perl -i -n -p -e "s#munin_remote_ip=\"?${IPv4_ADDRESS_OLD}\"?#munin_remote_ip=\"${IPv4_ADDRESS_NEW}\"#g" "${IPT_FIREWALL_MAIN_IPV4_FILE}" > /dev/null 2>&1
if [[ $? -gt 0 ]]; then
echo_failed
else
echo_ok
fi
else
echo_skipped
fi
else
echo_skipped
fi
echononl " Replace ${IPv6_ADDRESS_OLD} in file '${IPT_FIREWALL_MAIN_IPV6_FILE}'.."
if [[ -f "${IPT_FIREWALL_MAIN_IPV6_FILE}" ]] ; then
if $(grep -q -E "munin_remote_ip=\"?${IPv6_ADDRESS_OLD}\"?" "${IPT_FIREWALL_MAIN_IPV6_FILE}" 2> /dev/null) ; then
perl -i -n -p -e "s#munin_remote_ip=\"?${IPv6_ADDRESS_OLD}\"?#munin_remote_ip=\"${IPv6_ADDRESS_NEW}\"#g" "${IPT_FIREWALL_MAIN_IPV6_FILE}" > /dev/null 2>&1
if [[ $? -gt 0 ]]; then
echo_failed
else
echo_ok
fi
else
echo_skipped
fi
else
echo_skipped
fi
clean_up 0
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