Created
February 24, 2023 09:12
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Collecting AWS instance cost & spot metrics using Prometheus
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# writes additional node_aws_info metrics to node exporter | |
* * * * * node-exporter /usr/local/bin/node-exporter-instance-info.sh |
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#!/usr/bin/env bash | |
# | |
# Collect AWS EC2 metadata for this instance | |
AWS_REGION=$(curl -s http://169.254.169.254/latest/meta-data/placement/region) | |
INSTANCE_LIFE_CYCLE=$(curl -s http://169.254.169.254/latest/meta-data/instance-life-cycle) | |
INSTANCE_TYPE=$(curl -s http://169.254.169.254/latest/meta-data/instance-type) | |
# Collect pricing from ec2.shop | |
INSTANCE_INFO=$(curl -sL "https://ec2.shop?region=${AWS_REGION}&filter=${INSTANCE_TYPE}" -H 'accept: json' | jq '.Prices[]') | |
instance_storage=$(echo ${INSTANCE_INFO} | jq -r .Storage) | |
instance_network=$(echo ${INSTANCE_INFO} | jq -r .Network) | |
instance_cost_hourly=$(echo ${INSTANCE_INFO} | jq -r .Cost) | |
instance_cost_monthly=$(echo ${INSTANCE_INFO} | jq -r .MonthlyPrice) | |
instance_spot_price=$(echo ${INSTANCE_INFO} | jq -r .SpotPrice) | |
if [ "${INSTANCE_LIFE_CYCLE}" = "spot" ] ; then | |
instance_cost_hourly_billed=${instance_spot_price} | |
else | |
instance_cost_hourly_billed=${instance_cost_hourly} | |
fi | |
# spot information | |
SPOT_INSTANCE_ACTION=$(curl -sf http://169.254.169.254/latest/meta-data/spot/instance-action | jq -r .action) | |
cat << EOF > /etc/node-exporter/node_aws.prom | |
# HELP node_aws_info AWS specific information to this node | |
node_aws_info{life_cycle="${INSTANCE_LIFE_CYCLE}",storage="${instance_storage}",network="${instance_network}",cost_hourly="${instance_cost_hourly}",cost_monthly="${instance_cost_monthly}",spot_price="${instance_spot_price}",cost_hourly_billed="${instance_cost_hourly_billed}",spot_action="${SPOT_INSTANCE_ACTION}"} 1 | |
node_aws_costs{life_cycle="${INSTANCE_LIFE_CYCLE}"} ${instance_cost_hourly_billed} | |
EOF |
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[Unit] | |
Description=Node Exporter | |
[Service] | |
User=node-exporter | |
Restart=always | |
RestartSec=5 | |
ExecStart=/usr/local/bin/node_exporter \ | |
--collector.textfile.directory=/etc/node-exporter | |
[Install] | |
WantedBy=multi-user.target |
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