Node exporter installation script

Inspired by K3s install.sh

Usage

curl -sSfL https://raw.githubusercontent.com/carlocorradini/node_exporter_installer/main/install.sh | sh -

$INSTALL_NODE_EXPORTER_BIN_DIR/node_exporter.uninstall.sh

Note: The following commands result in the same behavior

curl ... | INSTALL_NODE_EXPORTER_EXEC="--collector.disable-defaults --collector.os" sh -s -

curl ... | INSTALL_NODE_EXPORTER_EXEC="--collector.disable-defaults" sh -s - --collector.os

curl ... | sh -s - --collector.disable-defaults --collector.os

curl ... | INSTALL_NODE_EXPORTER_VERSION="v1.5.0" INSTALL_NODE_EXPORTER_SKIP_START="true" sh -

Name	Description	Default
`INSTALL_NODE_EXPORTER_SKIP_DOWNLOAD`	Skip downloading Node exporter. There must already be an executable binary at `<BIN_DIR>/node_exporter`	`false`
`INSTALL_NODE_EXPORTER_FORCE_RESTART`	Force restarting Node exporter service	`false`
`INSTALL_NODE_EXPORTER_SKIP_ENABLE`	Skip enabling Node exporter service at startup	`false`
`INSTALL_NODE_EXPORTER_SKIP_START`	Skip starting Node exporter service	`false`
`INSTALL_NODE_EXPORTER_SKIP_FIREWALL`	Skip firewall rules. Supported firewalls are `firewall-cmd`, `ufw` and `iptables`	`false`
`INSTALL_NODE_EXPORTER_SKIP_SELINUX`	Skip changing `SELinux` context for Node exporter binary	`false`
`INSTALL_NODE_EXPORTER_VERSION`	Version of Node exporter to download	`latest`
`INSTALL_NODE_EXPORTER_BIN_DIR`	Directory to install Node exporter binary and uninstall script	`/usr/local/bin` or `/opt/bin`
`INSTALL_NODE_EXPORTER_SYSTEMD_DIR`	Directory to install systemd service files	`/etc/systemd/system`
`INSTALL_NODE_EXPORTER_EXEC`	Node exporter arguments

I would love to see your contribution :heart:

See CONTRIBUTING guidelines.

This project is licensed under the MIT License.
See LICENSE file for details.