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Simple Prometheus node_exporter install script (Updated for 1.0.1)
#!/bin/bash
version="${VERSION:-1.0.1}"
arch="${ARCH:-linux-amd64}"
bin_dir="${BIN_DIR:-/usr/local/bin}"
wget "https://github.com/prometheus/node_exporter/releases/download/v$version/node_exporter-$version.$arch.tar.gz" \
-O /tmp/node_exporter.tar.gz
mkdir -p /tmp/node_exporter
cd /tmp || { echo "ERROR! No /tmp found.."; exit 1; }
tar xfz /tmp/node_exporter.tar.gz -C /tmp/node_exporter || { echo "ERROR! Extracting the node_exporter tar"; exit 1; }
cp "/tmp/node_exporter/node_exporter-$version.$arch/node_exporter" "$bin_dir"
chown root:staff "$bin_dir/node_exporter"
cat <<EOF > /etc/systemd/system/node_exporter.service
[Unit]
Description=Prometheus node exporter
After=local-fs.target network-online.target network.target
Wants=local-fs.target network-online.target network.target
[Service]
Type=simple
ExecStartPre=-/sbin/iptables -I INPUT 1 -p tcp --dport 9100 -s 127.0.0.1 -j ACCEPT
ExecStartPre=-/sbin/iptables -I INPUT 3 -p tcp --dport 9100 -j DROP
ExecStart=/usr/local/bin/node_exporter
[Install]
WantedBy=multi-user.target
EOF
systemctl enable node_exporter.service
systemctl start node_exporter.service
echo "SUCCESS! Installation succeeded!"
@dschrul
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dschrul commented Mar 17, 2020

thanks for this. Helped me a lot today

@lgg42
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lgg42 commented Oct 7, 2020

Thanks! it helped!

@galexrt
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galexrt commented Oct 7, 2020

@lgg42 no problem! Please note that I have gone ahead and updated the node_exporter version to v1.0.1 as of today.

@carlocorradini
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Hey, I'm trying to create a more robust/advanced/configurable installation script for Node exporter.

You can find it here: https://github.com/carlocorradini/node_exporter_installer

Any help is greatly appreciated!

@galexrt
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galexrt commented May 8, 2022

@carlocorradini Looks like a good improvement on this simple script. One thing I would optional though would be the iptables rules created during the service start. They can be placed "anywhere" under the [Service] section so you can just append them to the file if the feature flag has been enabled.

Might also be worth to add ExecStopPost to remove the iptables rules so in case the service is restarted multiple times there are no leftover iptables rules.

@carlocorradini
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@galexrt Thanks!
Do you want to create a simple PR? 🥳🤯

@galexrt
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galexrt commented May 9, 2022

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