Merge branch 'del-bash-install-script' into 'main'

Delete Retired Bash Install Script

See merge request !4

install-node_exporter.sh

-#!/usr/bin/env bash
-ver="1.6.1"
-file="node_exporter-${ver}.linux-amd64.tar.gz"
-sha256=sha256sums.txt
-
-# cd to the script directory, in case the user has run it from another directory
-sriptdir=$(cd "$(dirname "$0")" && pwd)
-cd $sriptdir
-
-if [[ ! -f $file ]]; then
-  echo "Downloading $file from Github"
-  curl -L https://github.com/prometheus/node_exporter/releases/download/v${ver}/${file} -o $file
-fi
-
-echo "Downloading the $sha256 checksum file"
-curl -L https://github.com/prometheus/node_exporter/releases/download/v${ver}/$sha256 -o $sha256
-
-if ! grep $file $sha256 | sha256sum -c -; then
-	echo "checksum failed for $file, exitting" >&2
-	exit 1
-else
-	echo "Checksum of $file: OK"
-fi
-
-if [[ ! -d tmp/${file%.tar.gz} ]]; then
-	echo "Extracting $file to tmp/"
-  tar -zxf $file -C tmp/
-fi
-
-echo "Adding system user: node_exporter"
-useradd -rs /bin/false node_exporter
-
-echo "Copying node_exporter binary to /usr/local/bin"
-systemctl is-active --quiet node_exporter.service && systemctl stop node_exporter.service
-cp tmp/${file%.tar.gz}/node_exporter /usr/local/bin/
-chown root:root /usr/local/bin/node_exporter
-
-echo "Creating /etc/systemd/system/node_exporter.service file"
-cp node_exporter.service /etc/systemd/system/
-
-echo "Starting node_exporter.service"
-systemctl daemon-reload
-systemctl enable node_exporter.service
-systemctl start node_exporter.service
-
-## Host based firewall rules to allow incoming scrapes on `9100/tcp`
-## from the Prometheus public IP
-
-#echo "Creating firewalld rule to allow Prometheus server access to 9100/tcp"
-#firewall-cmd --zone=public --permanent --add-rich-rule='rule family="ipv4" source address="172.20.0.99" port protocol="tcp" port="9100" accept'
-#firewall-cmd --zone=public --add-rich-rule='rule family="ipv4" source address="172.20.0.99" port protocol="tcp" port="9100" accept'