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Delete 02_2__Script_Linode_Setup.stackscript
Now fully using Standup
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Shannon Appelcline
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#!/bin/bash
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# This block defines the variables the user of the script needs to input
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# when deploying using this script.
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#
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# <UDF name="btctype" label="Installation Type" oneOf="Mainnet,Pruned Mainnet,Testnet,Pruned Testnet,Private Regtest" default="Testnet" example="Bitcoin node type" />
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# BTCTYPE=
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# <UDF name="hostname" label="Short Hostname" example="Example: bitcoincore-testnet-pruned" />
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# HOSTNAME=
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# <UDF name="fqdn" label="Fully Qualified Hostname" example="Example: bitcoincore-testnet-pruned.local or bitcoincore-testnet-pruned.domain.com"/>
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# FQDN=
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# <UDF name="userpassword" label="User1 Password" example="Password to for the user1 non-privileged account." />
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# USERPASSWORD=
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# <UDF name="ssh_key" label="SSH Key" default="" example="Key for automated logins to user1 non-privileged account." optional="true" />
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# SSH_KEY=
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# <UDF name="sys_ssh_ip" label="SSH-Allowed IPs" default="" example="Comma separated list of IPs that can use SSH" optional="true" />
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# SYS_SSH_IP=
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####
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# 0. Set Initial Variables
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####
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# CURRENT BITCOIN RELEASE:
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# Change as necessary
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export BITCOIN=bitcoin-core-0.18.0
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# Set the variable $IPADDR to the IP address the new Linode receives.
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IPADDR=$(/sbin/ifconfig eth0 | awk '/inet / { print $2 }' | sed 's/addr://')
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# Output stdout and stderr to ~root files
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exec > >(tee -a /root/stackscript.log) 2> >(tee -a /root/stackscript.log /root/stackscript.err >&2)
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echo "$0 - BEGINNING NEW MACHINE SETUP STACKSCRIPT"
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echo "$0 - BITCOIN SETUP TYPE IS: $BTCTYPE"
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####
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# 1. Update Hostname
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####
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echo $HOSTNAME > /etc/hostname
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# /etc/init.d/hostname.sh start
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/bin/hostname $HOSTNAME
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echo "$0 - Set hostname as $FQDN ($IPADDR)"
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echo "$0 - TODO: Put $FQDN with IP $IPADDR in your main DNS file."
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# Add localhost aliases
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echo "127.0.0.1 localhost" > /etc/hosts
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echo "127.0.1.1 $FQDN $HOSTNAME" >> /etc/hosts
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echo "$0 - Set localhost"
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####
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# 2. Update Timezone
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####
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# Set Timezone to America/LA
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TIMEZONE="America/Los_Angeles"
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echo $TIMEZONE > /etc/timezone
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cp /usr/share/zoneinfo/${TIMEZONE} /etc/localtime
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echo "$0 - Set Time Zone to Lost Angeles"
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####
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# 3. Protect the Server
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####
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# Add firewall rules to block everything that's not Bitcoin, Ping, or SSH
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cat > /etc/iptables.firewall.rules <<EOF
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*filter
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# Allow all loopback (lo0) traffic and drop all traffic to 127/8 that doesn't use lo0
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-A INPUT -i lo -j ACCEPT
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-A INPUT -d 127.0.0.0/8 -j REJECT
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# Accept all established inbound connections
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-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
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# Allow all outbound traffic - you can modify this to only allow certain traffic
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-A OUTPUT -j ACCEPT
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# If you want HTTP and HTTPS, uncomment these
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# Allow SSH connections
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#
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# The -dport number should be the same port number you set in sshd_config
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#
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-A INPUT -p tcp -m state --state NEW --dport 22 -j ACCEPT
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# Allow ping
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-A INPUT -p icmp -j ACCEPT
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# Allow Bitcoin connections
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-A INPUT -p tcp --dport 22 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT
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-A INPUT -p tcp --dport 8333 -j ACCEPT
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-A INPUT -p tcp --dport 18333 -j ACCEPT
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-A INPUT -p tcp --dport 9735 -j ACCEPT
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-A INPUT -m conntrack --ctstate ESTABLISHED -j ACCEPT
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# Log iptables denied calls
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-A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7
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# Drop all other inbound - default deny unless explicitly allowed policy
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-A INPUT -j DROP
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-A FORWARD -j DROP
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COMMIT
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EOF
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# Make a copy of the IPv4 rules for IPv6
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cat /etc/iptables.firewall.rules | sed 's/127.0.0.0\/8/::1\/128/' > /etc/ip6tables.firewall.rules
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# Make a startup file that runs IPv4 and IPv6 rules
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cat > /etc/network/if-pre-up.d/firewall <<EOF
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#!/bin/sh
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/sbin/iptables-restore < /etc/iptables.firewall.rules
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/sbin/ip6tables-restore < /etc/ip6tables.firewall.rules
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EOF
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chmod a+x /etc/network/if-pre-up.d/firewall
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# Then run it
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/etc/network/if-pre-up.d/firewall
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echo "$0 - Created iptables. NOTE! This will prevent everything but Bitcoin, Ping, and SSH from working!!"
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# Put your Login IPs into the hosts.allow file to allow access
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if [ -n "$SYS_SSH_IP" ]; then
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echo "sshd: $SYS_SSH_IP" >> /etc/hosts.allow
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echo "sshd: ALL" >> /etc/hosts.deny
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echo "$0 - Limited SSH access."
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else
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echo "$0 - WARNING: Your SSH access is not limited; this is a major security hole!"
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fi
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# Block SSH access from everywhere else
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# Yes, this means that if you don't have an IP address for SSH, you can only login
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# from Linode's Lish Console
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####
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# 4. Set Up User
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####
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# Create "user1" with optional password and give them sudo capability
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/usr/sbin/useradd -m -p `perl -e 'printf("%s\n",crypt($ARGV[0],"password"))' "$USERPASSWORD"` -g sudo -s /bin/bash user1
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/usr/sbin/adduser user1 sudo
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echo "$0 - Setup user1 with sudo access."
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# Set up SSH Key
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if [ -n "$SSH_KEY" ]; then
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mkdir ~user1/.ssh
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echo "$SSH_KEY" >> ~user1/.ssh/authorized_keys
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chown -R user1 ~user1/.ssh
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echo "$0 - Added .ssh key to user1."
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fi
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# Give user some helpful bitcoin aliases
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if [ "$BTCTYPE" == "Testnet" ] || [ "$BTCTYPE" == "Pruned Testnet" ]; then
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sudo -u user1 cat >> ~user1/.bash_profile <<EOF
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alias btcdir="cd ~/.bitcoin/" #linux default bitcoind path
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# alias btcdir="cd ~/Library/Application\ Support/Bitcoin/" #mac default bitcoind path
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alias bc="bitcoin-cli"
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alias bd="bitcoind"
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alias btcinfo='bitcoin-cli getwalletinfo | egrep "\"balance\""; bitcoin-cli getnetworkinfo | egrep "\"version\"|connections"; bitcoin-cli getmininginfo | egrep "\"blocks\"|errors"'
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alias btcblock="echo \\\`bitcoin-cli getblockcount 2>&1\\\`/\\\`wget -O - http://blockexplorer.com/testnet/q/getblockcount 2> /dev/null | cut -d : -f2 | rev | cut -c 2- | rev\\\`"
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EOF
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else
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sudo -u user1 cat >> ~user1/.bash_profile <<EOF
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alias btcdir="cd ~/.bitcoin/" #linux default bitcoind path
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# alias btcdir="cd ~/Library/Application\ Support/Bitcoin/" #mac default bitcoind path
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alias bc="bitcoin-cli"
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alias bd="bitcoind"
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alias btcinfo='bitcoin-cli getwalletinfo | egrep "\"balance\""; bitcoin-cli getnetworkinginfo | egrep "\"version\"|connections"; bitcoin-cli getmininginfo | egrep "\"blocks\"|errors"'
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alias btcblock="echo \\\`bitcoin-cli getblockcount 2>&1\\\`/\\\`wget -O - http://blockchain.info/q/getblockcount 2>/dev/null\\\`"
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EOF
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fi
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/bin/chown user1 ~user1/.bash_profile
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cp ~user1/.bash_profile ~user1/.bashrc
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/bin/chown user1 ~user1/.bashrc
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echo "$0 - Give user1 bitcoin aliases in their .bash_profile."
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####
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# 5. Bring Debian Up To Date
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####
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echo "$0 - Starting Debian updates; this will take a while!"
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# Make sure all packages are up-to-date
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export DEBIAN_FRONTEND=noninteractive
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apt-get update
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apt-get upgrade -y
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apt-get dist-upgrade -y
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# Install emacs (a good text editor), haveged (a random number generator
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apt-get install emacs -y
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apt-get install haveged -y
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# Set system to automatically update
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echo "unattended-upgrades unattended-upgrades/enable_auto_updates boolean true" | debconf-set-selections
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apt-get -y install unattended-upgrades
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echo "$0 - Updated Debian Packages"
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####
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# 6. Install Bitcoin
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####
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# Download Bitcoin
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echo "$0 - Downloading Bitcoin; this will also take a while!"
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export BITCOINPLAIN=`echo $BITCOIN | sed 's/bitcoin-core/bitcoin/'`
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sudo -u user1 wget https://bitcoin.org/bin/$BITCOIN/$BITCOINPLAIN-x86_64-linux-gnu.tar.gz -O ~user1/$BITCOINPLAIN-x86_64-linux-gnu.tar.gz
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sudo -u user1 wget https://bitcoin.org/bin/$BITCOIN/SHA256SUMS.asc -O ~user1/SHA256SUMS.asc
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sudo -u user1 wget https://bitcoin.org/laanwj-releases.asc -O ~user1/laanwj-releases.asc
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# Verifying Bitcoin: Signature
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echo "$0 - Verifying Bitcoin."
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sudo -u user1 /usr/bin/gpg --no-tty --import ~user1/laanwj-releases.asc
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export SHASIG=`sudo -u user1 /usr/bin/gpg --no-tty --verify ~user1/SHA256SUMS.asc 2>&1 | grep "Good signature"`
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echo "SHASIG is $SHASIG"
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if [[ $SHASIG ]]; then
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echo "VERIFICATION SUCCESS / SIG: $SHASIG"
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else
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(>&2 echo "VERIFICATION ERROR: Signature for Bitcoin did not verify!")
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fi
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# Verify Bitcoin: SHA
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export TARSHA256=`/usr/bin/sha256sum ~user1/$BITCOINPLAIN-x86_64-linux-gnu.tar.gz | awk '{print $1}'`
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export EXPECTEDSHA256=`cat ~user1/SHA256SUMS.asc | grep $BITCOINPLAIN-x86_64-linux-gnu.tar.gz | awk '{print $1}'`
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if [ "$TARSHA256" == "$EXPECTEDSHA256" ]; then
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echo "VERIFICATION SUCCESS / SHA: $TARSHA256"
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else
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(>&2 echo "VERIFICATION ERROR: SHA for Bitcoin did not match!")
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fi
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# Install Bitcoin
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echo "$0 - Installinging Bitcoin."
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sudo -u user1 /bin/tar xzf ~user1/$BITCOINPLAIN-x86_64-linux-gnu.tar.gz -C ~user1
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/usr/bin/install -m 0755 -o root -g root -t /usr/local/bin ~user1/$BITCOINPLAIN/bin/*
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/bin/rm -rf ~user1/$BITCOINPLAIN/
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# Start Up Bitcoin
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echo "$0 - Starting Bitcoin."
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sudo -u user1 /bin/mkdir ~user1/.bitcoin
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# The only variation between Mainnet and Testnet is that Testnet has the "testnet=1" variable
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# The only variation between Regular and Pruned is that Pruned has the "prune=550" variable, which is the smallest possible prune
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# TODO: need to test rpcpassword random below using EOF technique
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# TODO: there are other more modern ways to set up rpc authentication — to investigate and document.
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cat >> ~user1/.bitcoin/bitcoin.conf << EOF
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server=1
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dbcache=1536
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par=1
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blocksonly=1
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maxuploadtarget=137
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maxconnections=16
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rpcuser=bitcoinrpc
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rpcpassword=$(xxd -l 16 -p /dev/urandom)
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rpcallowip=127.0.0.1
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walletbroadcast=1
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EOF
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if [ "$BTCTYPE" == "Mainnet" ]; then
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cat >> ~user1/.bitcoin/bitcoin.conf << EOF
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txindex=1
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EOF
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elif [ "$BTCTYPE" == "Pruned Mainnet" ]; then
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cat >> ~user1/.bitcoin/bitcoin.conf << EOF
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prune=550
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EOF
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elif [ "$BTCTYPE" == "Testnet" ]; then
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cat >> ~user1/.bitcoin/bitcoin.conf << EOF
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txindex=1
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testnet=1
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EOF
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elif [ "$BTCTYPE" == "Pruned Testnet" ]; then
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cat >> ~user1/.bitcoin/bitcoin.conf << EOF
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prune=550
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testnet=1
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EOF
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elif [ "$BTCTYPE" == "Private Regtest" ]; then
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(>&2 echo "$0 - ERROR: Private Regtest is not setup yet.")
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else
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(>&2 echo "$0 - ERROR: Somehow you managed to select no Bitcoin Installation Type, so Bitcoin hasn't been properly setup. Whoops!")
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fi
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/bin/chown user1 ~user1/.bitcoin/bitcoin.conf
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/bin/chmod 600 ~user1/.bitcoin/bitcoin.conf
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sudo -u user1 /usr/local/bin/bitcoind -daemon
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# Add Bitcoin Startup to Crontab for User1
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sudo -u user1 sh -c '( /usr/bin/crontab -l -u user1 2>/dev/null; echo "@reboot /usr/local/bin/bitcoind -daemon" ) | /usr/bin/crontab -u user1 -'
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# Alert User!
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sudo -u user1 touch ~user1/BITCOIN-IS-READY
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echo "$0 - ENDING NEW MACHINE SETUP STACKSCRIPT"
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