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#!/usr/bin/env bash
#shellcheck disable=SC2181
# this script will uninstall netdata
# Variables needed by script and taken from '.environment' file:
# - NETDATA_PREFIX
# - NETDATA_ADDED_TO_GROUPS
usage="$(basename "$0") [-h] [-f ] -- program to calculate the answer to life, the universe and everything
where:
-e, --env path to environment file (defauls to '/etc/netdata/.environment'
-f, --force force uninstallation and do not ask any questions
-h show this help text
-y, --yes flag needs to be set to proceed with uninstallation"
FILE_REMOVAL_STATUS=0
ENVIRONMENT_FILE="/etc/netdata/.environment"
INTERACTIVITY="-i"
YES=0
while :; do
case "$1" in
-h | --help)
echo "$usage" >&2
exit 1
;;
-f | --force)
INTERACTIVITY="-f"
shift
;;
-y | --yes)
YES=1
shift
;;
-e | --env)
ENVIRONMENT_FILE="$2"
shift 2
;;
-*)
echo "$usage" >&2
exit 1
;;
*) break ;;
esac
done
if [ "$YES" != "1" ]; then
echo "This script will REMOVE netdata from your system."
echo "Run it again with --yes to do it."
exit 1
fi
if [[ $EUID -ne 0 ]]; then
echo "This script SHOULD be run as root or otherwise it won't delete all installed components."
key="n"
read -r -s -n 1 -p "Do you want to continue as non-root user [y/n] ? " key
if [ "$key" != "y" ] && [ "$key" != "Y" ]; then
exit 1
fi
fi
function quit_msg() {
echo
if [ "$FILE_REMOVAL_STATUS" -eq 0 ]; then
echo "Something went wrong :("
else
echo "Netdata files were successfully removed from your system"
fi
}
function user_input() {
TEXT="$1"
if [ "${INTERACTIVITY}" == "-i" ]; then
read -r -p "$TEXT" >&2
fi
}
function rm_file() {
FILE="$1"
if [ -f "${FILE}" ]; then
rm -v ${INTERACTIVITY} "${FILE}"
fi
}
function rm_dir() {
DIR="$1"
if [ -n "$DIR" ] && [ -d "$DIR" ]; then
user_input "Press ENTER to recursively delete directory '$DIR' > "
rm -v -f -R "${DIR}"
fi
}
netdata_pids() {
local p myns ns
myns="$(readlink /proc/self/ns/pid 2>/dev/null)"
for p in \
$(cat /var/run/netdata.pid 2>/dev/null) \
$(cat /var/run/netdata/netdata.pid 2>/dev/null) \
$(pidof netdata 2>/dev/null); do
ns="$(readlink "/proc/${p}/ns/pid" 2>/dev/null)"
#shellcheck disable=SC2002
if [ -z "${myns}" ] || [ -z "${ns}" ] || [ "${myns}" = "${ns}" ]; then
name="$(cat "/proc/${p}/stat" 2>/dev/null | cut -d '(' -f 2 | cut -d ')' -f 1)"
if [ "${name}" = "netdata" ]; then
echo "${p}"
fi
fi
done
}
trap quit_msg EXIT
#shellcheck source=/dev/null
source "${ENVIRONMENT_FILE}" || exit 1
#### STOP NETDATA
echo "Stopping a possibly running netdata..."
for p in $(netdata_pids); do
i=0
while kill "${p}" 2>/dev/null; do
if [ "$i" -gt 30 ]; then
echo "Forcefully stopping netdata with pid ${p}"
kill -9 "${p}"
sleep 2
break
fi
sleep 1
i=$((i + 1))
done
done
sleep 2
#### REMOVE NETDATA FILES
rm_file /etc/logrotate.d/netdata
rm_file /etc/systemd/system/netdata.service
rm_file /lib/systemd/system/netdata.service
rm_file /usr/lib/systemd/system/netdata.service
rm_file /etc/init.d/netdata
rm_file /etc/periodic/daily/netdata-updater
rm_file /etc/cron.daily/netdata-updater
if [ -n "${NETDATA_PREFIX}" ] && [ -d "${NETDATA_PREFIX}" ]; then
rm_dir "${NETDATA_PREFIX}"
else
rm_file "/usr/sbin/netdata"
rm_dir "/usr/share/netdata"
rm_dir "/usr/libexec/netdata"
rm_dir "/var/lib/netdata"
rm_dir "/var/cache/netdata"
rm_dir "/var/log/netdata"
rm_dir "/etc/netdata"
fi
FILE_REMOVAL_STATUS=1
#### REMOVE NETDATA USER & GROUP
if [ -n "$NETDATA_ADDED_TO_GROUPS" ]; then
user_input "Press ENTER to delete 'netdata' from following groups: '$NETDATA_ADDED_TO_GROUPS' > "
for group in $NETDATA_ADDED_TO_GROUPS; do
gpasswd -d netdata "${group}"
done
fi
user_input "Press ENTER to delete 'netdata' system user > "
userdel -f netdata || :
user_input "Press ENTER to delete 'netdata' system group > "
groupdel -f netdata || :
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