addpeers.sh

#!/bin/bash

#
# 20210119 - Use the new --endpoint flag
#          - Added verbose logging
#
# 20200608 - Updated to TzKt API
#
# 20191029 - Added /v3/network back in. 
#            Thanks to Baking-Bad and their Mystique API
#          - Added some more check logic
#          - Added '>' prefix so you can tell who is outputting
#
# 20191025 - Filtering improvements @FreedomPrevails
#
# 20191019 - Babylon Update
# TZScan was the only public place to find a listing of all connected
# tezos nodes. With tzscan offline, this information is no longer
# accessible. The script below will still attempt to maintain connections
# to the foundation nodes.

# The tezos-admin-client binary will output 'Error' messages in
# most cases, even when already connected to a peer.
#
# If you found this script helpful, send us a tip!
# Baking Tacos! tz1RV1MBbZMR68tacosb7Mwj6LkbPSUS1er1
#

# Where is tezos installed?
TZPATH=/home/myuser/tezos
PARAMS="--endpoint http://127.0.0.1:8732"

# Sanity Tests
command -v $TZPATH/tezos-admin-client >/dev/null 2>&1 || { echo >&2 "Cannot find 'tezos-admin-client' in $TZPATH"; exit 1; }
command -v jq >/dev/null 2>&1 || { echo >&2 "'jq' is required. Please install it."; exit 1; }
command -v curl >/dev/null 2>&1 || { echo >&2 "'curl' is required. Please install it."; exit 1; }
command -v dig >/dev/null 2>&1 || { echo >&2 "'dig' is required. Please install it."; exit 1; }
command -v ss >/dev/null 2>&1 || { echo >&2 "'ss' is required. Please install it."; exit 1; }

# Cache connections list
NET=$(ss -nt state established)

newpeers=0

# get foundation nodes
echo "> Getting list of foundation nodes..."
for i in dubnodes franodes sinnodes nrtnodes pdxnodes; do
    for j in `dig $i.tzbeta.net +short`; do
        if [ -z "$(echo $NET | grep $j)" ]; then
            echo "> Connecting foundation $j..."
            $TZPATH/tezos-admin-client $PARAMS connect address [$j]:9732
            if [ $? -eq 0 ]; then
                ((newpeers++))
                #  echo "> New connection to $j established"
            fi
        fi
    done
done

# Public Nodes
# Loop over pages from mystique API.
APIDOMAIN="services.tzkt.io"

echo "> Fetching list of public nodes from https://$APIDOMAIN/v1/network"
for page in {0..5}; do

    # get array of peers
    peers=($(curl -s "https://$APIDOMAIN/v1/network?state=running&p=$page&n=50" | jq -r '.[] | .point_id' | xargs))
    if [ ${#peers[@]} -eq 0 ]; then
        # exit loop, no results for page
        echo "> ... complete"
        break
    fi

    # loop through peers array
    echo "> Processing list of public nodes..."
    for i in ${peers[@]}; do

        # handle ipv4 or ipv6
        numparts=$(echo $i | awk -F: '{print NF}')
        basenum=$((numparts-1))
        port=$(echo $i | cut -d: -f$numparts)
        base=$(echo $i | cut -d: -f1-$basenum)
        formatted="[$base]:$port"

        if [ -z "$(echo $NET | grep $base)" ]; then
            echo "> Connecting to $formatted..."
            $TZPATH/tezos-admin-client $PARAMS connect address $formatted
            if [ $? -eq 0 ]; then
                ((newpeers++))
                #echo "> New connection to $j established"
            fi
        fi
    done
done

# how many peers do we have now? how many did we add?
numpeers=$($TZPATH/tezos-admin-client $PARAMS p2p stat | grep "MAINNET" | wc -l)
echo "> Added $newpeers peers. Currently $numpeers connected. Done."

Any tips for running this in their Docker distribution?

@ZaneWithSpoon I'm not good enough with docker to give you a solid answer. At first guess, you could mount this script something like -v addpeers.sh:/opt/path/addpeers.sh maybe? Or create a new docker volume, copy this script into the volume and mount it within the container?

jq and curl are not required anymore.
You need to make sure you have installed dnsutils for dig.

Updated code to check for required utilities. Merged @FreedomPrevails improvements. Deleted comment with their code to avoid confusion. Re-added /v3/network polling.

Ive been seeing my nodes getting pretty low in peer count. going to give this a shot tomorrow. thanks.

i love this script. very useful for todays network congestion!