Welcome to DROP (Distributed Reliable Operation Platform)

"                    ___           ___           ___    "
"     _____         /\  \         /\  \         /\  \   "
"    /::\  \       /::\  \       /::\  \       /::\  \  "
"   /:/\:\  \     /:/\:\__\     /:/\:\  \     /:/\:\__\ "
"  /:/  \:\__\   /:/ /:/  /    /:/  \:\  \   /:/ /:/  / "
" /:/__/ \:|__| /:/_/:/__/___ /:/__/ \:\__\ /:/_/:/  /  "
" \:\  \ /:/  / \:\/:::::/  / \:\  \ /:/  / \:\/:/  /   "
"  \:\  /:/  /   \::/~~/~~~~   \:\  /:/  /   \::/__/    "
"   \:\/:/  /     \:\~~\        \:\/:/  /     \:\  \    "
"    \::/  /       \:\__\        \::/  /       \:\__\   "
"     \/__/         \/__/         \/__/         \/__/   "
"

DROP - Serverless Functions Made Simple

Any process can be packaged as a function enabling you to consume a range of any events or other functions.

Run code without thinking about servers.

Installing DROP

Prerequisites

• CentOS 7.3 or later, for the 64-bit x86_64 architecture.
• Yum package management application installed.
• Root or sudo access to the system.

Installation from Vagrantfile (local)

curl -O https://raw.githubusercontent.com/droopp/vagrant/master/Vagrantfile .
vagrant up

Installation from RPM packages

curl https://dropfaas.com/RPMS/drop-bootstrap.sh | sudo sh

Configuring DROP node (after set up - systemctl restart drop-core)

Inter-node communication interface (Optional)

If you have more than one network interface and don't want to use default interface, you need configure name of inerface

sudo echo 'export DROP_IFACE=eth1' >> /home/drop-core/.bashrc

eth1 - example name of network interface

By default node will be used default network interface

Declare nodes (Optional)

If your network not support multicast you need declare your nodes

For example

sudo echo '192.168.50.4
           192.168.50.5
           192.168.50.6' > /var/lib/drop/drop-hosts

By default nodes will declare self by multicast

Linux system optimisation (Optional)

In production you need tune linux parameters for better performance

 ulimit -n 
 vm.swappiness
 vm.vfs_cache_pressure
 vm.dirty_ratio
 vm.dirty_background_ratio
 vm.dirty_writeback_centisecs
 vm.dirty_expire_centisecs
 kernel.panic
 fs.file-max
 net.core.netdev_max_backlog
 net.core.somaxconn
 net.ipv4.tcp_syncookies
 net.ipv4.tcp_max_syn_backlog
 net.ipv4.tcp_max_tw_buckets
 net.ipv4.tcp_tw_recycle
 net.ipv4.tcp_timestamps
 net.ipv4.tcp_tw_reuse
 net.ipv4.tcp_fin_timeout
 net.ipv4.tcp_keepalive_time
 net.ipv4.tcp_keepalive_probes
 net.ipv4.tcp_keepalive_intvl
 net.core.wmem_max
 net.core.rmem_max
 net.core.rmem_default
 net.core.wmem_default
 net.ipv4.tcp_rmem
 net.ipv4.tcp_wmem