#!/bin/bash

# this script ends up in:
#	/var/lib/cloud/instance/scripts/part-001
# running as the 'root' user and is run during first start up of the machine

# start a log file to record some information from the operation of this script:
export logFile="/tmp/startUpScript.log.$$"

# record environment to find out the operating conditions of this script

printf "#### begin start up script log %s\n" "`date '+%s %F %T'`" > "${logFile}"
printf "#### uname -a\n" >> "${logFile}"
uname -a >> "${logFile}" 2>&1
## printf "#### df -h\n" >> "${logFile}"
## df -h >> "${logFile}" 2>&1
printf "#### env\n" >> "${logFile}"
env >> "${logFile}" 2>&1
printf "#### set\n" >> "${logFile}"
set >> "${logFile}" 2>&1
printf "#### arp -a\n" >> "${logFile}"
arp -a >> "${logFile}" 2>&1
printf "#### ifconfig -a\n" >> "${logFile}"
ifconfig -a >> "${logFile}" 2>&1

if [ -s /home/centos/.bashrc ]; then
  printf "## parasol node machine started install %s\n" "`date '+%s %F %T'`" >> /etc/motd
  mkdir -p /data /home/centos/bin
  chmod 777 /data
  chmod 755 /home/centos
  chown -R centos:centos /data /home/centos/bin
  # these additions to .bashrc should protect themselves from repeating
  printf "export PATH=/data/bin:/data/bin/blat:/home/centos/bin:\$PATH\n" >> /home/centos/.bashrc
  printf "export LANG=C\n" >> /home/centos/.bashrc
  printf "alias og='ls -ogrt'\n" >> /home/centos/.bashrc
  printf "alias plb='parasol list batches'\n" >> /home/centos/.bashrc
  printf "alias vi='vim'\n" >> /home/centos/.bashrc
  printf "set -o vi\n" >> /home/centos/.bashrc
  printf "set background=dark\n" >> /home/centos/.vimrc
  printf "#### before yum install %s\n" "`date '+%s %F %T'`" >> "${logFile}"
  # useful to have the 'host' command, 'traceroute' and nmap ('nc')
  # to investigate the network, and wget for fetching, tcsh for csh shell
  #  bc for math calcs, perl-core installs 112 packages, vim for editing
  # convenience
  yum -y install bind-utils traceroute nmap-ncat wget tcsh perl-core vim-X11 vim-common vim-enhanced vim-minimal bc >> "${logFile}" 2>&1
  printf "#### after yum install %s\n" "`date '+%s %F %T'`" >> "${logFile}"
  # this P A R A H U B will be sed changed to have the IP address of
  # the parasol hub machine
  mount -t nfs PARAHUB:/data /data >> "${logFile}" 2>&1
  # wait for NFS to work
  sleep 15
  # wake up NFS, ensure the files are here
  touch /data/parasol/nodeInfo >> "${logFile}" 2>&1
  cat /data/parasol/nodeInfo/id_rsa.pub > /home/centos/.ssh/id_rsa.pub
  # adding id_rsa.pub to authorized_keys will allow all machines in this
  # parasol system to ssh to each other without prompts, including localhost
  cat /home/centos/.ssh/id_rsa.pub >> /home/centos/.ssh/authorized_keys
  chmod 644 /home/centos/.ssh/id_rsa.pub
  chown -R centos:centos /home/centos/.ssh /home/centos/.vimrc
  printf "## parasol node machine finished install %s\n" "`date '+%s %F %T'`" >> /etc/motd
  date '+%s %F %T' > /tmp/node.machine.ready.signal
fi
printf "#### end start up script log %s\n" "`date '+%s %F %T'`" >> "${logFile}"