telegraf/scripts/post-install.sh

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#!/bin/bash
BIN_DIR=/usr/bin
LOG_DIR=/var/log/telegraf
SCRIPT_DIR=/usr/lib/telegraf/scripts
LOGROTATE_DIR=/etc/logrotate.d
function install_init {
cp -f $SCRIPT_DIR/init.sh /etc/init.d/telegraf
chmod +x /etc/init.d/telegraf
}
function install_systemd {
cp -f $SCRIPT_DIR/telegraf.service /lib/systemd/system/telegraf.service
systemctl enable telegraf || true
systemctl daemon-reload || true
}
function install_update_rcd {
update-rc.d telegraf defaults
}
function install_chkconfig {
chkconfig --add telegraf
}
id telegraf &>/dev/null
if [[ $? -ne 0 ]]; then
useradd --system -U -M telegraf -s /bin/false -d /etc/telegraf
fi
test -d $LOG_DIR || mkdir -p $LOG_DIR
chown -R -L telegraf:telegraf $LOG_DIR
chmod 755 $LOG_DIR
# Remove legacy symlink, if it exists
if [[ -L /etc/init.d/telegraf ]]; then
rm -f /etc/init.d/telegraf
fi
# Add defaults file, if it doesn't exist
if [[ ! -f /etc/default/telegraf ]]; then
touch /etc/default/telegraf
fi
# Add .d configuration directory
if [[ ! -d /etc/telegraf/telegraf.d ]]; then
mkdir -p /etc/telegraf/telegraf.d
fi
# Distribution-specific logic
if [[ -f /etc/redhat-release ]]; then
# RHEL-variant logic
which systemctl &>/dev/null
if [[ $? -eq 0 ]]; then
install_systemd
else
# Assuming sysv
install_init
install_chkconfig
fi
elif [[ -f /etc/debian_version ]]; then
# Debian/Ubuntu logic
which systemctl &>/dev/null
if [[ $? -eq 0 ]]; then
install_systemd
systemctl restart telegraf || echo "WARNING: systemd not running."
else
# Assuming sysv
install_init
install_update_rcd
invoke-rc.d telegraf restart
fi
elif [[ -f /etc/os-release ]]; then
source /etc/os-release
if [[ $ID = "amzn" ]]; then
# Amazon Linux logic
install_init
install_chkconfig
fi
fi