Node Exporter (Prometheus) - Revision history

Nick: /* Downloading The Package */

2026-03-28T06:09:05Z

Downloading The Package

Nick at 04:00, 28 March 2026

2026-03-28T04:00:36Z

Nick: /* Updating Prometheus Config */

2026-03-28T03:59:14Z

Updating Prometheus Config

Nick: /* Updating Prometheus Config */

2026-03-28T03:57:14Z

Updating Prometheus Config

Nick: /* Starting The Service */

2026-03-28T03:49:23Z

Starting The Service

Nick at 03:46, 28 March 2026

2026-03-28T03:46:59Z

Nick: Created page with "placeholder text"

2026-03-28T03:31:24Z

Created page with "placeholder text"

New page

placeholder text

@@ Line 3: / Line 3: @@
 ==Downloading The Package==
-Locate the appropriate package [here] and copy the URL (should be a Github link) for the below command:
+Locate the appropriate package [https://prometheus.io/download/ here] and copy the URL (should be a Github link) for the below command:
   <nowiki>wget LINK_GOES_HERE</nowiki>

@@ Line 9: / Line 9: @@
   <nowiki>tar xvzf node_exporter-WHATEVER-VERSION-YOU-HAVE.tar.gz</nowiki>
-==Creating A User==
+=Creating A User=
 Create a user for node_exporter without a home directory or shell login:
   <nowiki>sudo useradd --no-create-home --shell /usr/sbin/nologin node_exporter</nowiki>
-==Relocating The Files/Directories==
+=Relocating The Files/Directories=
 From the files extracted, copy the below to '/usr/local/bin/':
   <nowiki>sudo cp node_exporter-WHATEVER-VERSION-YOU-HAVE/node_exporter /usr/local/bin/</nowiki>
@@ Line 20: / Line 20: @@
   <nowiki>sudo chown node_exporter:node_exporter /usr/local/bin/node_exporter</nowiki>
-==Creating Systemd Service File==
+=Creating Systemd Service File=
 Create a .service file at the below location:
   <nowiki>/etc/systemd/system/node_exporter.service</nowiki>
@@ Line 57: / Line 59: @@
   <nowiki>curl http://localhost:PORT/metrics</nowiki>
-==Updating Prometheus Config==
+=Updating Prometheus Config=
 Within the prometheus.yml file, typically located here:
   <nowiki>/etc/prometheus/prometheus.yml</nowiki>

← Older revision		Revision as of 03:59, 28 March 2026
Line 68:		Line 68:
	</nowiki>		</nowiki>
	<strong>Reminder that indents, spacing, and punctuation are CRITICAL to get right, and should be in line with the rest of the .yml file</strong>		<strong>Reminder that indents, spacing, and punctuation are CRITICAL to get right, and should be in line with the rest of the .yml file</strong>
		+
		+	Once the prometheus.yml file has been updated, reload Prometheus via:
		+	<nowiki>curl -X POST http://localhost:PORT/-/reload
		+	# Where localhost:PORT are the hostname and port number for Prometheus, NOT the node_exporter</nowiki>
		+
		+	Make sure to verify that this traffic is permissible through any firewalls that may be between any hosts/ports.

← Older revision		Revision as of 03:57, 28 March 2026
Line 58:		Line 58:

	==Updating Prometheus Config==		==Updating Prometheus Config==
		+	Within the prometheus.yml file, typically located here:
		+	<nowiki>/etc/prometheus/prometheus.yml</nowiki>
		+
		+	Add the following block under the 'scrape_configs:' section:
		+	<nowiki>
		+	- job_name: 'node_exporter'
		+	static_configs:
		+	- targets: ['localhost:PORT'] # Replace localhost and/or PORT with your actual host and/or PORT number
		+	</nowiki>
		+	<strong>Reminder that indents, spacing, and punctuation are CRITICAL to get right, and should be in line with the rest of the .yml file</strong>

← Older revision		Revision as of 03:49, 28 March 2026
Line 42:		Line 42:

	==Starting The Service==		==Starting The Service==
		+	Reload the systemd daemons:
		+	<nowiki>sudo systemctl daemon-reload</nowiki>

		+	Start the node_exporter service:
		+	<nowiki>sudo systemctl start node_exporter</nowiki>
		+
		+	Confirm the service started successfully via:
		+	<nowiki>sudo systemctl status node_exporter</nowiki>
		+
		+	If the service is running, enable it so that it starts on every boot:
		+	<nowiki>sudo systemctl enable node_exporter</nowiki>
		+
		+	We can also verify that it's listening/functioning with the below command:
		+	<nowiki>curl http://localhost:PORT/metrics</nowiki>

	==Updating Prometheus Config==		==Updating Prometheus Config==

← Older revision		Revision as of 03:46, 28 March 2026
Line 1:		Line 1:
−	~~placeholder text~~	+	=Installing Node_Exporter=
		+
		+
		+	==Downloading The Package==
		+	Locate the appropriate package [here] and copy the URL (should be a Github link) for the below command:
		+	<nowiki>wget LINK_GOES_HERE</nowiki>
		+
		+	Extract the package you downloaded via:
		+	<nowiki>tar xvzf node_exporter-WHATEVER-VERSION-YOU-HAVE.tar.gz</nowiki>
		+
		+	==Creating A User==
		+	Create a user for node_exporter without a home directory or shell login:
		+	<nowiki>sudo useradd --no-create-home --shell /usr/sbin/nologin node_exporter</nowiki>
		+
		+	==Relocating The Files/Directories==
		+	From the files extracted, copy the below to '/usr/local/bin/':
		+	<nowiki>sudo cp node_exporter-WHATEVER-VERSION-YOU-HAVE/node_exporter /usr/local/bin/</nowiki>
		+
		+	Change ownership of those files to the node_exporter user:group that we created:
		+	<nowiki>sudo chown node_exporter:node_exporter /usr/local/bin/node_exporter</nowiki>
		+
		+	==Creating Systemd Service File==
		+	Create a .service file at the below location:
		+	<nowiki>/etc/systemd/system/node_exporter.service</nowiki>
		+
		+	Input the below content into that new .service file:
		+	<nowiki>[Unit]
		+	Description=Node Exporter
		+	Wants=network-online.target
		+	After=network-online.target
		+
		+	[Service]
		+	User=node_exporter
		+	Group=node_exporter
		+	Type=simple
		+	ExecStart=/usr/local/bin/node_exporter \ # Make sure that each line of the ExecStart block ends in a \ EXCEPT for the final line
		+	--web.listen-address=:PORT # Replace PORT with whatever the desired port number for node_exporter is, 9100 is default if this line is omitted
		+
		+	[Install]
		+	WantedBy=multi-user.target
		+	</nowiki>
		+
		+	==Starting The Service==
		+
		+
		+	==Updating Prometheus Config==