Script To Automatically Restart Monerod

#=============== Script monero.sh =======
#!/bin/bash
# TODO: Change this.
location_bitmonero="/path/to/.bitmonero/"

current_dir=$(pwd)
pushd  $location_bitmonero || cd $location_bitmonero

PATH=/opt/bin/:$PATH
export PATH

DNS_PUBLIC="tcp://127.0.0.1"
#DNS_PUBLIC="tcp://9.9.9.9"
export DNS_PUBLIC

MONERO_RANDOMX_FULL_MEM=1
export MONERO_RANDOMX_FULL_MEM

#
# $1 = file, $2 = max age in hrs - both mandatory.
function is_file_recent () {
    local retval=0 # defaults to 0, false

    file_tmstmp=$(stat -c %Y $1)
    now_tmstmp=$(date +%s)
    file_age=$(($now_tmstmp - $file_tmstmp))
    #max_age=$(( $2 * 60 )) # for debug (in mins)
    max_age=$(( $2 * 60 * 60))

    if [[ $file_age -gt $max_age ]]; then
        # "Max age exceeded re-download"
        retval=0
    else
        # "File is recent no download"
        retval=1
    fi
    echo ${retval}
}

# Download the latest XMR nodes
# https://monero.fail/haproxy.cfg
# https://monero.fail/haproxy.cfg?chain=monero&network=mainnet
function download_haproxy () {
    echo -ne "\nDownloading latest Active Peers.\n"
    wget -q -O haproxy.cfg "https://monero.fail/haproxy.cfg?chain=monero&network=mainnet"
}

re_download=$(is_file_recent "haproxy.cfg" 6)
if [[ $re_download -eq 0 ]]; then
    download_haproxy
else
    echo Active Peers File is new enough!
fi

# ***************************************
peer_nodes=()
success_count=0
MAX_PEER_NODES=15
for anode in $(cat haproxy.cfg |   grep -E '\s+server backend-.+{1,5}\s+' | awk '{print $3}' | grep -vE 'b32\.i2p|\.onion')
do
    server=$(echo "$anode" | sed  's/\(.*\):\(.*\)/\1/')
    echo -ne "\n===================================\n"
    echo -ne "Checking if Monero Node : $server is alive"
    ping -c 1 -W 5 $server 1>/dev/null 2>&1
    if [[ $? -eq 0 ]] then
        echo -ne " -> [Yes]\n===================================\n"
        # append to array.
        peer_nodes+=($anode)
        ((success_count+=1))
    else
        echo -ne " -> [No]\n===================================\n"
    fi

    if [[ $success_count -eq $MAX_PEER_NODES ]] then
       break
    fi
done
add_peer_node_str=""
for pnode in ${peer_nodes[@]}
do
    add_peer_node_str+=" --seed-node $pnode "
done
# ***************************************

function download_banlist () {
    # Download the latest ban list.
    # https://github.com/Boog900/monero-ban-list/blob/main/ban_list.txt
    echo -ne "\nDownloading BanList File.\n\n"
    aria2c --allow-overwrite --remote-time -o ban_list.txt https://raw.githubusercontent.com/Boog900/monero-ban-list/refs/heads/main/ban_list.txt
    # bug fix
    touch ban_list.txt
}

echo -ne "\n"
do_download=$(is_file_recent "ban_list.txt" 6)
if [[ $do_download -eq 0 ]]; then
    download_banlist
else
    echo "========================================"
    echo        BanList File is new enough!
    echo "========================================"
    echo ""
fi


cmd="monerod --zmq-pub tcp://127.0.0.1:18083 "

# Peer Node(s)
cmd+=$add_peer_node_str

cmd_heredoc=$( cat <<'EndCmd'
 --enforce-dns-checkpointing  --enable-dns-blocklist --ban-list  /path/to/ban_list.txt
--limit-rate-up 512
--limit-rate-down 512
--out-peers 100 --in-peers 100
--max-connections-per-ip 3
--p2p-bind-port 18080 --p2p-bind-ip 192.188.1.4 --p2p-external-port 18080
--log-file /mnt/crypto/.bitmonero/bitmonero.log --max-log-files 2
--no-igd --igd=disabled --db-sync-mode safe:sync --max-concurrency 6
--pidfile /path/to/monerod.pid  --detach
--rpc-bind-ip 127.0.0.1  --rpc-bind-port 18081
--public-node --confirm-external-bind
--rpc-restricted-bind-port 18089 --rpc-restricted-bind-ip 192.188.1.4
--rpc-payment-allow-free-loopback
--rpc-ssl-allow-any-cert
--rpc-ssl enabled
--log-level 0
EndCmd
)

cmd+=$cmd_heredoc
echo $cmd

echo "Countdown ends in 10"
for a in {1..9}
do
    echo -ne $a.
    sleep 1
done
echo "10"

sudo -u monero -g monero --preserve-env=DNS_PUBLIC,PATH,MONERO_RANDOMX_FULL_MEM  ${cmd}

popd || cd "$current_dir"


#=============== Script monero-restart.sh =======
#!/usr/bin/bash

# Stop the monerod daemon.
curl -k -v -X POST https://127.0.0.1:18081/stop_daemon -H 'Content-Type: application/json'

# Pause before restart
echo "Restarting in 30"
sleep 30

# restart the daemon
/path/to/bin/monero.sh




# ============================= Cron job =========
# Execute script
SHELL=/bin/bash
PATH=/path/to/bin/:/sbin:/bin:/usr/sbin:/usr/bin
* 7 * * * root /path/to/bin/monero-restart.sh 1>>/path/to/bitmonero.log