solana/net/scripts/install-earlyoom.sh

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#!/usr/bin/env bash
set -ex
#
# Install EarlyOOM
#
[[ $(uname) = Linux ]] || exit 1
[[ $USER = root ]] || exit 1
# earlyoom specifically needs "SysRq 64 - enable signalling of processes (term, kill, oom-kill)"
# but for simplicity just enable all SysRq
sysctl -w kernel.sysrq=1
echo kernel.sysrq=1 >> /etc/sysctl.conf
if command -v earlyoom; then
systemctl status earlyoom
else
wget -r -l1 -np http://ftp.us.debian.org/debian/pool/main/e/earlyoom/ -A 'earlyoom_1.2-*_amd64.deb' -e robots=off -nd
apt install --quiet --yes ./earlyoom_1.2-*_amd64.deb
cat > earlyoom <<OOM
# trigger at 20% available RAM,
EARLYOOM_ARGS="-m 20"
OOM
cp earlyoom /etc/default/
rm earlyoom
systemctl stop earlyoom
systemctl enable earlyoom
systemctl start earlyoom
fi