#!/bin/bash
echo "=========================================="
echo "Installing Monitoring Node Components     "
echo "=========================================="
HOSTNAME=$(hostname)
FWZONE=$(sudo firewall-cmd --get-default-zone)
echo "Installing InfluxDB"
echo "============================="
sudo yum install -y wget
sudo yum install -y curl
cat <<EOF | sudo tee /etc/yum.repos.d/influxdata.repo
[influxdata]
name = InfluxData Repository - Stable
baseurl = https://repos.influxdata.com/stable/\$basearch/main
enabled = 1
gpgcheck = 1
gpgkey = https://repos.influxdata.com/influxdata-archive_compat.key
EOF
sudo yum -y install influxdb
echo "============================="
echo "Opening firewall for InfluxDB"
echo "============================="
cat <<EOF | sudo tee /etc/firewalld/services/influxdb.xml
<?xml version="1.0" encoding="utf-8"?>
<service version="1.0">
    <short>influxdb</short>
    <description>InfluxDB</description>
    <port port="8086" protocol="tcp"/>
    <port port="2003" protocol="tcp"/>
</service>
EOF
sleep 10
sudo firewall-cmd --permanent --zone=$FWZONE --add-service=influxdb
sudo systemctl enable influxdb.service
echo "============================="
echo "Installing Grafana"
echo "============================="
sudo yum install -y https://s3-us-west-2.amazonaws.com/grafana-releases/release/grafana-5.2.1-1.x86_64.rpm 

cat <<EOF | sudo tee /etc/firewalld/services/grafana.xml
<?xml version="1.0" encoding="utf-8"?>
<service version="1.0">
    <short>grafana</short>
    <description>Grafana</description>
    <port port="3000" protocol="tcp"/>
</service>
EOF
sleep 5
echo ""
sudo firewall-cmd --permanent --zone=$FWZONE --add-service=grafana
sudo firewall-cmd --reload
sudo systemctl enable grafana-server.service
echo "============================"
echo "Installing jmxtrans"
echo "============================"
sudo yum -y install  https://repo1.maven.org/maven2/org/jmxtrans/jmxtrans/272/jmxtrans-272.rpm
sudo chkconfig --del jmxtrans
read -e -p "Please enter the hostname of the Teamwork Cloud Node (as obtained via the hostname command):  "  -i ""  HOSTNAME
echo "" 
read -e -p "Please enter the IP Address of the Teamwork Cloud Node:  "  -i ""  IPADDRESS
echo "" 
JMXFILE=twcloud-$HOSTNAME.json
sudo sed -e "s/HOST_NAME/$HOSTNAME/g" twcloud.json.template > $JMXFILE
sudo sed -i "s/IP_ADDRESS/$IPADDRESS/g" $JMXFILE

sudo chmod 755 $JMXFILE
sudo \cp -fR $JMXFILE /var/lib/jmxtrans/

cat <<EOF | sudo tee /etc/systemd/system/jmxtrans.service
[Unit]
Description=JMX Transformer - more than meets the eye
After=syslog.target network.target

[Service]
Type=forking
User=jmxtrans
Group=jmxtrans
# Run ExecStartPre with root-permissions
PermissionsStartOnly=true
ExecStartPre=-/usr/bin/mkdir /run/jmxtrans/
ExecStartPre=/usr/bin/chown -R jmxtrans:jmxtrans /run/jmxtrans/
PIDFile=/var/run/jmxtrans/jmxtrans.pid
ExecStart=/usr/share/jmxtrans/bin/jmxtrans start

[Install]
WantedBy=multi-user.target
 

EOF
sleep 5
sudo chmod +x /etc/systemd/system/jmxtrans.service
sudo sed -i '/wrapper.app.parameter.3/a wrapper.app.parameter.4=-s\nwrapper.app.parameter.5=30\n' /etc/jmxtrans/wrapper.conf 
sudo systemctl enable jmxtrans
echo "==========================="
echo "Initializing influxdb databases with 35 day retention"
echo "==========================="
sudo cp influxdb.conf /etc/influxdb/influxdb.conf
sudo systemctl daemon-reload
sudo systemctl enable influxdb

sudo systemctl start influxdb
sleep 5
sudo influx -execute "CREATE DATABASE graphite with duration 35d"
sudo influx -execute "CREATE DATABASE telegraf with duration 35d"
sudo influx -execute "CREATE DATABASE twcloud with duration 35d"  
sudo influx -execute "CREATE DATABASE webapp with duration 35d"  
sudo systemctl daemon-reload
echo "==========================="
echo "Starting Grafana Server"
echo "==========================="
sudo systemctl enable grafana-server
sudo systemctl start grafana-server
echo "==========================="
echo "Starting jmxtrans"
echo "==========================="
sudo systemctl enable jmxtrans
sudo systemctl start jmxtrans
echo "=========================="
echo "Reloading firewall rules"
echo "=========================="
sudo firewall-cmd --reload
echo "=========================="
echo "Create Grafana Datasources"
echo "=========================="
sudo curl -X POST -H "Content-Type: application/json" -d @datasource1.json http://admin:admin@localhost:3000/api/datasources
sudo curl -X POST -H "Content-Type: application/json" -d @datasource2.json http://admin:admin@localhost:3000/api/datasources
sudo curl -X POST -H "Content-Type: application/json" -d @datasource3.json http://admin:admin@localhost:3000/api/datasources 
sudo curl -X POST -H "Content-Type: application/json" -d @datasource4.json http://admin:admin@localhost:3000/api/datasources 
echo "=========================="
echo "Create Grafana Guest User" 
echo "=========================="
sudo curl -X POST -H "Content-Type: application/json" -d @createguest.json http://admin:admin@localhost:3000/api/admin/users/