Crash server after some hour

hi
i have an question about cardano node , we installed cardano node in ubuntu 20 and everything works fine for some hour, after that server starting to crash
i followed up cardano official document for setup (installed with ghcup)
i cant access to server after crash and i must recreate VM

sudo apt-get install automake build-essential pkg-config libffi-dev libgmp-dev libssl-dev libtinfo-dev libsystemd-dev zlib1g-dev make g++ tmux git jq wget libncursesw5 curl libtool autoconf libssl-dev libffi7 libgmp10 libncurses-dev -y


curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh


cabal update


$ ghcup install ghc 8.10.5

$ ghcup install cabal 3.4.0.0

$ ghcup set ghc 8.10.5

$ ghcup set cabal 3.4.0.0

$ mkdir -p ~/src

$ cd ~/src

## Download and install libsodium (Sodium is a new, easy-to-use software library for encryption, decryption, signatures, password hashing and more https://github.com/jedisct1/libsodium)

git clone https://github.com/input-output-hk/libsodium

cd libsodium

git checkout 66f017f1

./autogen.sh

./configure

make

sudo make install

cd ~/src

git clone https://github.com/input-output-hk/cardano-node.git

cd cardano-node

git fetch --all --recurse-submodules --tags

git tag

<!-- choose the tag with the highest version number: TAGGED-VERSION -->

git checkout tags/1.30.1

cabal configure --with-compiler=ghc-8.10.5

## Building and installing the node

cabal build all

cp -p "$(./scripts/bin-path.sh cardano-node)" ~/.local/bin/

cp -p "$(./scripts/bin-path.sh cardano-cli)" ~/.local/bin/

## Have fun

cardano-cli --version

Runner script


#!/bin/sh

BASE_DIRECTORY=/home/cardano/cardano-node


PIDFILE=${BASE_DIRECTORY}/node-runner.pid
if [ -f $PIDFILE ]; then
    PID=$(cat $PIDFILE)
    ps -p $PID >/dev/null 2>&1
    if [ $? -eq 0 ]; then
        echo "Process already running"
        exit 1
    else
        ## Process not found assume not running
        echo $$ >$PIDFILE
        if [ $? -ne 0 ]; then
            echo "Could not create PID file"
            exit 1
        fi
    fi
else
    echo $$ >$PIDFILE
    if [ $? -ne 0 ]; then
        echo "Could not create PID file"
        exit 1
    fi
fi

DIRECTORY=/home/cardano/cardano-my-node
mkdir -p $DIRECTORY
PORT=6000
HOSTADDR=0.0.0.0
TOPOLOGY=${DIRECTORY}/mainnet-topology.json
yes | /bin/cp -rf ${BASE_DIRECTORY}/config/mainnet-topology.json $TOPOLOGY
DB_PATH=${DIRECTORY}/db
mkdir -p $DB_PATH
SOCKET_PATH=${DIRECTORY}/db/node.socket

CONFIG=${DIRECTORY}/mainnet-config.json
yes | /bin/cp -rf ${BASE_DIRECTORY}/config/mainnet-config.json $CONFIG

yes | /bin/cp -rf ${BASE_DIRECTORY}/config/mainnet-byron-genesis.json ${DIRECTORY}/mainnet-byron-genesis.json
# yes | /bin/cp -rf ${BASE_DIRECTORY}/config/rest-config.json ${DIRECTORY}/rest-config.json
yes | /bin/cp -rf ${BASE_DIRECTORY}/config/mainnet-shelley-genesis.json ${DIRECTORY}/mainnet-shelley-genesis.json
yes | /bin/cp -rf ${BASE_DIRECTORY}/config/mainnet-alonzo-genesis.json ${DIRECTORY}/mainnet-alonzo-genesis.json

/home/cardano/.local/bin/cardano-node run --topology ${TOPOLOGY} --database-path ${DB_PATH} --socket-path ${SOCKET_PATH} --host-addr ${HOSTADDR} --port ${PORT} --config ${CONFIG}

my service for run script


[Unit]

Description=Cardano Node Runner

Documentation=man:nm-online(1)

[Service]

Type=simple

ExecStart=sh /home/cardano/cardano-node/node-runner.sh

RemainAfterExit=no

ExecStop=/sbin/start-stop-daemon --quiet --stop --retry QUIT/5 --pidfile /home/cardano/cardano-node/node-runner.pid

User=cardano

Restart=on-failure

RestartSec=15

Nice=-5

[Install]

WantedBy=multi-user.target

os:
ubuntu 20
12 GB ram
6 core cpu
110 GB hard

journalctl -e -f -u cardano-node

344319 196608 393216)),TraceLabelPeer (ConnectionId {localAddress = 172.16.10.103:45779, remoteAddress = 18.184.236.47:3001}) (Left (FetchDeclineConcurrencyLimit FetchModeBulkSync 1))]
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:10.75 UTC] Chain extended, new tip: 87a5d00a2437b24e86114f1db0d72b6878a2847bac010436fbc19032926b9dd6 at slot 1594259
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:12.01 UTC] Chain extended, new tip: 5fa02f2f20252f21b10bd40b38726f17b186509d8a7b43967710ac2bdac8ee90 at slot 1595716
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:13.27 UTC] Chain extended, new tip: d0a17967707d561e9e6be4dafadfcdf9f6e5a8178106aa4f12ef810e16e46b77 at slot 1596835
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:14.52 UTC] Chain extended, new tip: e7ab76259a1640839333c8799c9e9a395a51052ac70fb665549e137fd09cf7dc at slot 1597938
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:15.77 UTC] Chain extended, new tip: d8b2fe6159c37170e316a52f332568d32868dc6c7674c94bd3e7809a16291102 at slot 1598649
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:17.02 UTC] Chain extended, new tip: e7ddf50fd3859d211dba517df493c30cd0bd23384754c04dcdc23e8e61be9f38 at slot 1599977
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:18.27 UTC] Chain extended, new tip: f083b436631ba67b882b30d82be13994d6e8b0a40c7ca240f706e8abd628f2a2 at slot 1601170
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:19.56 UTC] Chain extended, new tip: 7d6c2a0ecbb5ed24fee363992cf5f8012400c86e2138cfeb4830634b55da3a86 at slot 1602497
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:20.81 UTC] Chain extended, new tip: 51b35e9d0757f3a9af20baa0f29389f9f561f2ffccb97f2240fecd3a9719bf20 at slot 1603800
[cardano:cardano.node.BlockFetchDecision:Info:70] [2021-10-02 10:09:21.65 UTC] [TraceLabelPeer (ConnectionId {localAddress = 172.16.10.103:45413, remoteAddress = 18.133.102.151:3001}) (Left (FetchDeclinePeerBusy 277276 196608 393216)),TraceLabelPeer (ConnectionId {localAddress = 172.16.10.103:45779, remoteAddress = 18.184.236.47:3001}) (Left (FetchDeclineConcurrencyLimit FetchModeBulkSync 1))]
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:22.06 UTC] Chain extended, new tip: be852d096a4b22b78f2091d21ff89539422b4e57b3984d92c9ee9c513b2ad293 at slot 1605169
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:23.31 UTC] Chain extended, new tip: 43930c222ac773f9edb6107464c9a57028881307ebf8aa7a65211069f7686a11 at slot 1606586
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:24.56 UTC] Chain extended, new tip: 148dcb5a41a6c855f88fdd789780696c55cc3102bab2d8efd6d4f85aa6b115dd at slot 1608155
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:25.81 UTC] Chain extended, new tip: fc224698093af1e9a88f59b7a90ff0ec5cb8805677940a67a7734c58a6116c2b at slot 1609542
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:27.06 UTC] Chain extended, new tip: 795287027365a9b2851ebc81a198f4c73b72d3076dacc1e265c40d11646ea838 at slot 1610441
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:28.31 UTC] Chain extended, new tip: aa97d3efa5b287ca8e346872911f07dd4e26b719e908201c3e2a2e0aeea94872 at slot 1611170
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:29.75 UTC] Chain extended, new tip: de5b341f128316e1220919ecb82b24994dd65ace234fbdc51f6e7fdd76595002 at slot 1612010
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:31.02 UTC] Chain extended, new tip: fb2a89fbe11c7817e1ff9ad92eacd76d8d080f6ef19f5428a56da5f3d0d3e654 at slot 1612761
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:32.27 UTC] Chain extended, new tip: 22985d516251f51fc847be7f0580201ae5f27764439c47e07667bc60b3d3df98 at slot 1613656
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:33.65 UTC] Chain extended, new tip: cb09b97c759fc56a1c162177437d032de6c2e59b678628825addeea0e95176cb at slot 1614448
[cardano:cardano.node.BlockFetchDecision:Info:70] [2021-10-02 10:09:33.72 UTC] [TraceLabelPeer (ConnectionId {localAddress = 172.16.10.103:45413, remoteAddress = 18.133.102.151:3001}) (Left (FetchDeclinePeerBusy 337133 196608 393216)),TraceLabelPeer (ConnectionId {localAddress = 172.16.10.103:45779, remoteAddress = 18.184.236.47:3001}) (Left (FetchDeclineConcurrencyLimit FetchModeBulkSync 1))]
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:34.90 UTC] Chain extended, new tip: b07419a367909711e5de0eed0faba74a01c7edd667e4170bceb979db21d14de2 at slot 1615505
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:36.15 UTC] Chain extended, new tip: 65568cc8079714f5071adcdfe1d54b41bbfa79dae63dc30d9edc05f8df673d59 at slot 1616789
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:37.40 UTC] Chain extended, new tip: ecba7bb2f6a09c55805765189645ef5ed13ff6d56f9e6f0e3531366050c3923d at slot 1618390
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:38.72 UTC] Chain extended, new tip: 5815f7890f407e75ea0c40784aeeb3104a24972495d72c56f8e2bd259b5f6109 at slot 1620000
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:39.97 UTC] Chain extended, new tip: 47a123a88c54afc0dbe2f6906927716f7f14d1e7b947a5182c35512323bd2106 at slot 1621271
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:40.66 UTC] Chain extended, new tip: 145ab1b40cbd371daf38ca9259ca179924796c18db63feb05670e06c0068e1fa at slot 1621824
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:41.91 UTC] Chain extended, new tip: 490d3eb78f9d026c2c7322defd4d6ad67baa8714428a75c4c03f971c50ee3a10 at slot 1623463
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:43.16 UTC] Chain extended, new tip: dcf9be67d9c212a6a15f0477b8141a8259a02d8a87d285368a5c350a61aeff6c at slot 1625139
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:44.41 UTC] Chain extended, new tip: 316c588e56f34d62448ff1bac005d11aab8badf26db6c13ca7893a6771fe2201 at slot 1626882
[cardano:cardano.node.BlockFetchDecision:Info:70] [2021-10-02 10:09:45.41 UTC] [TraceLabelPeer (ConnectionId {localAddress = 172.16.10.103:45413, remoteAddress = 18.133.102.151:3001}) (Left (FetchDeclinePeerBusy 241450 196608 393216)),TraceLabelPeer (ConnectionId {localAddress = 172.16.10.103:45779, remoteAddress = 18.184.236.47:3001}) (Left (FetchDeclineConcurrencyLimit FetchModeBulkSync 1))]
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:45.66 UTC] Chain extended, new tip: f003ad7d194c9f0b8c82927fb33d75fed121667b645e8ab4504074fffa77e6e9 at slot 1628591
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:46.91 UTC] Chain extended, new tip: dcf970742f8f3c81b2530991d3ec403574483fa1f3fe7111e81548d3dd2bbb98 at slot 1630283
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:48.16 UTC] Chain extended, new tip: 6ff59e9d6bacd8e33b47ecb3deb0d739ce98977920118f0871f941168148837f at slot 1631834
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:49.41 UTC] Chain extended, new tip: d99f1ee1c6350f2ced06d1be07614626ac7d93c80d1f3f24fd76a3ccf785bc60 at slot 1633541
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:50.64 UTC] Chain extended, new tip: 2d0130fec28123e084e23219247fd82e5b03472ea0538377f52ba641c73f8e19 at slot 1634898
[cardano:cardano.node.ChainDB:Notice:60] [2021-10-02 10:09:51.89 UTC] Chain extended, new tip: 26d581e98c0c83e66f6477d47c1710c377d8730dca2973afec8050c12eb44069 at slot 1636524

i found problem my load average is high i found this topic in cardano github