Node and Iquidus Explorer Setup for Dummies

Node / Iquidus Explorer Setup for Dummies
Pulse Crypto is used in this example.

This Tutorial is going to create a Daemon (node) and install Explorer.
THIS IS NOT GOING TO CREATE A GUI CLIENT.

Follow the instructions in [whatever coin name] docs folder Unix build - some builds are different.

I setup this up on both Ubuntu 15.10 and 16.04 with no issues.
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******************************************
*** Change Password / Update System
******************************************

Change passwords
# sudo passwd  //change root password

Update Packages
# sudo apt-get update
# sudo apt-get upgrade -y

Install git and nano
# sudo apt-get install nano git -y

******************************************
*** Installing Pulse Node
******************************************

Get the Source Code

Basic packages to build the coin
# sudo apt-get install build-essential libssl-dev libdb++-dev libboost-all-dev libqrencode-dev miniupnpc libminiupnpc-dev autoconf pkg-config libtool autotools-dev libqt5gui5 libqt5core5a libqt5dbus5 qttools5-dev qttools5-dev-tools libprotobuf-dev automake -y

Create a Swap File - Low Ram Servers
# sudo fallocate -l 4G /swapfile
# sudo chmod 600 /swapfile
# sudo mkswap /swapfile
# sudo swapon /swapfile
# sudo nano /etc/fstab

Add to fstab file
/swapfile   none    swap    sw    0   0

Adding the Coin
# sudo git clone https://github.com/elcrypto/Pulse.git

Change Directories to src/
# cd Pulse/src/ 

Compile the code with flags
# sudo make -f makefile.unix USE_UPNP=1
# sudo strip pulsed

Stat the file with daemon flag so that you can create a config file
# sudo ./pulsed -daemon

Create a conf file in .pulse/pulse.conf
# cd
# sudo nano .pulse/pulse.conf

rpcuser=pulserpc
rpcpassword=Gnfh67gdmRTGvA5YB3UZhV6e6cPTTeneTTdnosLLD3cU
listen=1
maxconnections=500

*make sure to set the file to read only.
# sudo chmod 400 .pulse/pulse.conf
# cd Pulse/src
# sudo ./pulsed -daemon -txindex

Check it daemon has started.  If it returns information, the daemon is working!
# sudo ./pulsed getinfo

Stopping the daemon
# sudo ./pulsed stop

******************************************
*** Setting up the Explorer
*** https://github.com/iquidus/explorer
******************************************

# for older iquidus Install MongoDB Community Edition
## https://docs.mongodb.org/manual/tutorial/install-mongodb-on-ubuntu/

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv EA312927

Ubuntu14
# echo "deb http://repo.mongodb.org/apt/ubuntu trusty/mongodb-org/3.2 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.2.list
Ubuntu16
# echo "deb http://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.2 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.2.list

# sudo apt-get update
# sudo apt-get install -y mongodb-org

# for recent iquidus. ubu 20 
## https://docs.mongodb.com/manual/tutorial/install-mongodb-on-ubuntu/
wget -qO - https://www.mongodb.org/static/pgp/server-4.4.asc | sudo apt-key add -
echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu focal/mongodb-org/4.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.4.list
apt update
apt-get install -y mongodb-org

sudo systemctl start mongod
systemctl enable mongod
reboot

##Default init system is systemd which was Upstart previously. So you need to install Upstart, reboot your system and here you go, you can now run mongodb service.

Install Upstart
# sudo apt-get install upstart-sysv -y

Ubuntu 16 autostart mongod service
# systemctl enable mongod.service

# Reboot your system
# sudo reboot
# sudo service mongod start

Running MongoDB - reference
# sudo service mongod start
# sudo service mongod stop
# sudo service mongod restart
// alternatively ubu16
systemctl start mongod ... etc

Installing Nodejs
# sudo apt-get update
# sudo apt-get install nodejs nodejs-legacy -y
# sudo apt-get install npm -y

Creating a MongoDB Database
# sudo mongo
> use explorerdb
> db.createUser( { user: "3er44we222", pwd: "3eu4ue8hhk988!kd8", roles: [ "readWrite" ] } )
> exit

Installing the Explorer
# cd /home/
# git clone https://github.com/iquidus/explorer explorer
# cd explorer && npm install --production
# cp ./settings.json.template ./settings.json

Modify the Settings File
# sudo nano settings.json

See if it's working
# npm start

Update the databases
# sudo node scripts/sync.js index update 

Install Forever to keep the js running
# sudo npm install forever -g
# sudo npm install forever-monitor

Start the Explorer
# forever start bin/cluster

******************************************
*** Installing Cron
*** https://help.ubuntu.com/community/CronHowto
******************************************

# sudo apt-get install gnome-schedule -y

Editing Cron
# sudo crontab -e

Add Cron to File to update the explorer
*/1 * * * * cd /path/to/explorer && /usr/bin/node scripts/sync.js index update > /dev/null 2>&1

Add Cron to make sure the Pulsed runs (NOT WORKING)
If anyone has a good reboot for this, please post in the comments.
@reboot cd /root/Pulse/src ./pulsed -daemon -txindex
@reboot cd /root/explorer forever start bin/cluster 



******************************************
logfiles tend to get large if left

cheap way to delete >

cleanlogs - Deletes all historical forever log files. https://github.com/foreverjs/forever
# forever cleanlogs 

mongod doesnt seem to have such simple option, there are obvious choices
--quiet           #minimises output
--logappend       #seems to stick with one log file
--logrotate arg   #obviously an option to create regular new log files
by default it works with one logfile so todays cheap deal is
# echo "" > /var/log/mongodb/mongod.log

weekly cronjobs for both are

0 0 * * * 0 forever cleanlogs
0 0 * * * 0 echo "" > /var/log/mongodb/mongod.log