Tumar

# Create user
useradd --no-create-home --shell /bin/false alertmanager

# Download and unpack
wget https://github.com/prometheus/alertmanager/releases/download/v0.20.0/alertmanager-0.20.0.linux-amd64.tar.gz
tar -xvf alertmanager-0.20.0.linux-amd64.tar.gz
mv alertmanager-0.20.0.linux-amd64/alertmanager /usr/local/bin/
mv alertmanager-0.20.0.linux-amd64/amtool /usr/local/bin/

chown alertmanager:alertmanager /usr/local/bin/alertmanager

Tumar

# Download and unpack
curl -LO https://github.com/prometheus/node_exporter/releases/download/v0.18.1/node_exporter-0.18.1.linux-amd64.tar.gz
tar -xvf node_exporter-0.18.1.linux-amd64.tar.gz	
sudo mv node_exporter-0.18.1.linux-amd64/node_exporter /usr/local/bin

# Add user
sudo useradd -rs /bin/false node_exporter

# Configure service
sudo vi /etc/systemd/system/node_exporter.service