Added a build.py script for compiling and packaging. Added post and pre install scripts to handle installation and upgrades in a cleaner way. Minor fixes to the init script and service unit file.

scripts/init.sh

@@ -51,7 +51,6 @@ if [ ! -f "$STDERR" ]; then
     mkdir -p `dirname $STDERR`
 fi
 
-
 OPEN_FILE_LIMIT=65536
 
 function pidofproc() {
@@ -98,7 +97,7 @@ function log_success_msg() {
 name=telegraf
 
 # Daemon name, where is the actual executable
-daemon=/opt/telegraf/telegraf
+daemon=/usr/bin/telegraf
 
 # pid file for the daemon
 pidfile=/var/run/telegraf/telegraf.pid
@@ -106,12 +105,12 @@ piddir=`dirname $pidfile`
 
 if [ ! -d "$piddir" ]; then
     mkdir -p $piddir
-    chown $GROUP:$USER $piddir
+    chown $USER:$GROUP $piddir
 fi
 
 # Configuration file
-config=/etc/opt/telegraf/telegraf.conf
-confdir=/etc/opt/telegraf/telegraf.d
+config=/etc/telegraf/telegraf.conf
+confdir=/etc/telegraf/telegraf.d
 
 # If the daemon is not there, then exit.
 [ -x $daemon ] || exit 5
@@ -137,7 +136,7 @@ case $1 in
 
         log_success_msg "Starting the process" "$name"
         if which start-stop-daemon > /dev/null 2>&1; then
-            start-stop-daemon --chuid $GROUP:$USER --start --quiet --pidfile $pidfile --exec $daemon -- -pidfile $pidfile -config $config -config-directory $confdir $TELEGRAF_OPTS >>$STDOUT 2>>$STDERR &
+            start-stop-daemon --chuid $USER:$GROUP --start --quiet --pidfile $pidfile --exec $daemon -- -pidfile $pidfile -config $config -config-directory $confdir $TELEGRAF_OPTS >>$STDOUT 2>>$STDERR &
         else
             nohup $daemon -pidfile $pidfile -config $config -config-directory $confdir $TELEGRAF_OPTS >>$STDOUT 2>>$STDERR &
         fi

scripts/post-install.sh

@@ -0,0 +1,69 @@
+#!/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
+}
+
+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
+
+chown -R -L telegraf:telegraf $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/lsb-release ]]; then
+    # Debian/Ubuntu logic
+    which systemctl &>/dev/null
+    if [[ $? -eq 0 ]]; then
+	install_systemd
+    else
+	# Assuming sysv
+	install_init
+	install_update_rcd
+    fi
+fi

scripts/pre-install.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+if [[ -f /etc/opt/telegraf/telegraf.conf ]]; 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 /etc/opt/telegraf /etc/telegraf
+
+	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

scripts/telegraf.service

@@ -6,7 +6,7 @@ After=network.target
 [Service]
 EnvironmentFile=-/etc/default/telegraf
 User=telegraf
-ExecStart=/opt/telegraf/telegraf -config /etc/opt/telegraf/telegraf.conf -config-directory /etc/opt/telegraf/telegraf.d $TELEGRAF_OPTS
+ExecStart=/usr/bin/telegraf -config /etc/telegraf/telegraf.conf -config-directory /etc/telegraf/telegraf.d ${TELEGRAF_OPTS}
 Restart=on-failure
 KillMode=process