Dedicated Servers
  • Instant
  • Custom
  • Single CPU servers
  • Dual CPU servers
  • Servers with 4th Gen CPUs
  • Servers with AMD Ryzen and Intel Core i9
  • Storage Servers
  • Servers with 10Gbps ports
  • Hosting virtualization nodes
  • GPU
  • Sale
  • VPS
    GPU
  • Dedicated GPU server
  • VM with GPU
  • Tesla A100 80GB & H100 Servers
  • Sale
    Apps
    Cloud
  • VMware and RedHat's oVirt Сlusters
  • Proxmox VE
  • Colocation
  • Colocation in the Netherlands
  • Remote smart hands
  • Services
  • Network equipment
  • Intelligent DDoS protection
  • IPv4 and IPv6 address
  • Managed servers
  • SLA packages for technical support
  • Monitoring
  • Software
  • VLAN
  • Announcing your IP or AS (BYOIP)
  • USB flash/key/flash drive
  • Traffic
  • Hardware delivery for EU data centers
  • About
  • Careers at HOSTKEY
  • Server Control Panel & API
  • Data Centers
  • Network
  • Speed test
  • Hot deals
  • Sales contact
  • Reseller program
  • Affiliate Program
  • Grants for winners
  • Grants for scientific projects and startups
  • News
  • Our blog
  • Payment terms and methods
  • Legal
  • Abuse
  • Looking Glass
  • The KYC Verification
  • Hot Deals

    31.10.2022

    Monitoring Linux Services with Prometheus

    server one
    HOSTKEY
    Rent dedicated and virtual servers with instant deployment in reliable TIER III class data centers in the Netherlands and the USA. Free protection against DDoS attacks included, and your server will be ready for work in as little as 15 minutes. 24/7 Customer Support.

    Author: Senior Devops. Hostkey Lead Infrastructure Specialist Nikita Zubarev

    In the last article we talked about how to set up metric collection and the display alerts to monitor services using Prometheus. However, during the process, the question arose of how to monitor individual services on Linux servers. For example, in one of our previous articles, we described the case of using Ovirt web consoles using Apache Guacamole. Now let's look at how to organize the monitoring of services on Linux machines.

    Guacamole is a cross-platform remote desktop gateway that requires Apache Tomcat and Guacd to run.

    Open the service created for node_exporter:

    /usr/lib/systemd/system/node_exporter.service

    [Unit]
    
    Description=Prometheus exporter for machine metrics, written in Go with pluggable metric collectors.
    Documentation=https://github.com/prometheus/node_exporter
    After=network.target
    
    
    [Service]
    
    EnvironmentFile=-/etc/default/node_exporter
    User=root
    ExecStart=/usr/bin/node_exporter $NODE_EXPORTER_OPTS
    Restart=on-failure
    RestartSec=5s
    
    [Install]
    
    WantedBy=multi-user.target
    
    by default, $NODE_EXPORTER_OPTS is loaded from the file:
    # /etc/default/node_exporter
    
    
    If necessary, we can either monitor individual services by adding the collector.systemd.unit-whitelist option:
    
    #NODE_EXPORTER_OPTS="--collector.systemd --collector.systemd.unit-whitelist="(tomcat|guacd).service""

    After restarting the service, we get the metric on node_exporter:

    All you need to do is describe the rule for the alert:

    - alert: guacd_service
    	expr: node_systemd_unit_state{name="guacd.service",state="active"} == 0
    	for: 1s
    	annotations:
    		summary: "Instance {{ $labels.instance }} is down"
    		description: "{{ $labels.instance }} of job {{ $labels.job }} is down."
    - alert: tomcat_service
    	expr: node_systemd_unit_state{name="tomcat.service",state="active"} == 0
    	for: 1s
    	annotations:
    		summary: "Instance {{ $labels.instance }} is down"
    		description: "{{ $labels.instance }} of job {{ $labels.job }} is down."
    

    An example of an alert on the Alertmanager dashboard in Grafana:

    Conclusions

    In this short article, we looked at how services are monitored on Linux machines.This solution allows you to monitor the work of any system server and greatly simplifies the administration of server hardware. In the next article, we will explain how you should not display the basic parameters that the exporter returns.

    Rent dedicated and virtual servers with instant deployment in reliable TIER III class data centers in the Netherlands and the USA. Free protection against DDoS attacks included, and your server will be ready for work in as little as 15 minutes. 24/7 Customer Support.

    Other articles

    05.02.2024

    Test Build: Supermicro X13SAE-F Intel Core i9-14900KF 6.0 GHz

    Test results of a computer assembly based on the Supermicro X13SAE-F motherboard and the new Intel Core i9-14900KF processor overclockable up to 6.0 GHz.

    23.11.2023

    Why is it crucial to host a CRM system on your personal server?

    Which option is better: deploying a CRM on an internal server, purchasing a SaaS solution, or renting hosting?

    06.11.2023

    Guide to deploying and managing a Linux server without bash and sh using ispmanager

    Discover how a server pre-equipped with ispmanager can ease the management of your website and its online infrastructure.

    06.11.2023

    Ispmanager – web server and site control panel

    We tell you how a server with ispmanager pre-installed can simplify your work with site administration and its web environment.

    18.10.2023

    Hiddify personal VPN server

    Step-by-step instructions for setting up a Hiddify personal VPN server.

    HOSTKEY Dedicated servers and cloud solutions Pre-configured and custom dedicated servers. AMD, Intel, GPU cards, Free DDoS protection amd 1Gbps unmetered port 30
    4.3 67 67
    Upload