telegraf/scripts/pre-install.sh

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#!/bin/bash
if ! grep "^telegraf:" /etc/group &>/dev/null; then
groupadd -r telegraf
fi
if ! id telegraf &>/dev/null; then
useradd -r -M telegraf -s /bin/false -d /etc/telegraf -g telegraf
fi
if [[ -d /etc/opt/telegraf ]]; then
# Legacy configuration found
if [[ ! -d /etc/telegraf ]]; then
# New configuration does not exist, move legacy configuration to new location
echo -e "Please note, Telegraf's configuration is now located at '/etc/telegraf' (previously '/etc/opt/telegraf')."
mv -vn /etc/opt/telegraf /etc/telegraf
if [[ -f /etc/telegraf/telegraf.conf ]]; then
backup_name="telegraf.conf.$(date +%s).backup"
echo "A backup of your current configuration can be found at: /etc/telegraf/${backup_name}"
cp -a "/etc/telegraf/telegraf.conf" "/etc/telegraf/${backup_name}"
fi
fi
fi