FR: Add support for resource quotas

[blackliner]

Hi, until https://github.com/orgs/community/discussions/159847 is getting along, could we add a small patch section between the svc.sh install and svc.sh start calls that would run sth like this:

sed -i "/^\[Service\]/a\\
CPUQuota=$CPU_QUOTA\\
MemoryMax=$MEMORY_LIMIT
" "$UNIT_FILE"

I will definitely try it out in a fork and can contribute back if interest exists.

[vbem]

Hi @blackliner ,

Thanks for your input.

Now, this application also supports to inject a hook script before starting the runner service via MR_CMD_SVC_PRE_START environment variable.

For example, you can limit the CPU and RAM usage of the runner service by modifying the unit file of the runner service. Add the following lines to the .env file under the directory of this application. Then this script will be executed just before starting the runner service - ./svc.sh start.

MR_CMD_SVC_PRE_START="$(cat <<-'__HEREDOC__'
echo "🚀 Running custom commands before starting runner service."
name="$(<mr.d/name)"
echo "🚀 Runner: $name | User: $USER | Dir: $PWD"
source <( sed -n "1,$(grep -n '^UNIT_PATH=' svc.sh | cut -d: -f1)p" svc.sh )
echo "🚀 UNIT_PATH: $UNIT_PATH"
sudo sed -i -e '/^\[Service\]/a CPUQuota=50%' -e '/^\[Service\]/a MemoryMax=512M' "$UNIT_PATH"
sudo systemctl daemon-reload
echo "🚀 Updated unit file:"
cat "$UNIT_PATH"
__HEREDOC__
)"

[blackliner]

Did not know, that is really cool, thanks!