Analysis and Evaluation of Network Management Solutions a Comparison of Network Management Solutions Suitable for Networks with 2,500+ Devices
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20 Linux System Monitoring Tools Every Sysadmin Should Know by Nixcraft on June 27, 2009 · 315 Comments · Last Updated November 6, 2012
About Forum Howtos & FAQs Low graphics Shell Scripts RSS/Feed nixcraft - insight into linux admin work 20 Linux System Monitoring Tools Every SysAdmin Should Know by nixCraft on June 27, 2009 · 315 comments · Last updated November 6, 2012 Need to monitor Linux server performance? Try these built-in commands and a few add-on tools. Most Linux distributions are equipped with tons of monitoring. These tools provide metrics which can be used to get information about system activities. You can use these tools to find the possible causes of a performance problem. The commands discussed below are some of the most basic commands when it comes to system analysis and debugging server issues such as: 1. Finding out bottlenecks. 2. Disk (storage) bottlenecks. 3. CPU and memory bottlenecks. 4. Network bottlenecks. #1: top - Process Activity Command The top program provides a dynamic real-time view of a running system i.e. actual process activity. By default, it displays the most CPU-intensive tasks running on the server and updates the list every five seconds. Fig.01: Linux top command Commonly Used Hot Keys The top command provides several useful hot keys: Hot Usage Key t Displays summary information off and on. m Displays memory information off and on. Sorts the display by top consumers of various system resources. Useful for quick identification of performance- A hungry tasks on a system. f Enters an interactive configuration screen for top. Helpful for setting up top for a specific task. o Enables you to interactively select the ordering within top. r Issues renice command. -
Josh Malone Systems Administrator National Radio Astronomy Observatory Charlottesville, VA
heck What the #%!@ is wrong ^ with my server?!? Josh Malone Systems Administrator National Radio Astronomy Observatory Charlottesville, VA 1 Agenda • Intro to Monitoring • Internet protocols 101 • • Nagios SMTP • IMAP • Install/Config • HTTP • Usage • Custom plugins • Packet sniffing for dummies • Intro to Troubleshooting • Tools • telnet, openssl • grep, sed • ps, lsof, netstat 2 MONITORING 3 Automated Monitoring Workflow 4 Monitoring Packages: Open Source • • Pandora FMS • Opsview Core • Naemon • • • • • • Captialware ServerStatus • Core • Sensu All Trademarks and Logos are property of their respective trademark or copyright holders and are used by permission or fair use for education. Neither the presenter nor the conference organizers are affiliated in any way with any companies mentioned here. 5 Monitoring Packages: Commercial • Nagios XI • Groundwork • PRTG network monitor • CopperEgg • WhatsUp Gold • PRTG network monitor • op5 (Naemon) All Trademarks and Logos are property of their respective trademark or copyright holders and are used by permission or fair use for education. Neither the presenter nor the conference organizers are affiliated in any way with any companies mentioned here. 6 Why Automatic Service Monitoring? • Spot small problems before they become big ones • Learn about outages before your users do • Checklist when restoring from a power outage • Gives you better problem reports than users • Problems you might never spot otherwise • Failed HDDs in RAIDs • Full /var partitions • Logs not rotating • System temperature rising 7 Why Automatic Service Monitoring? • Capacity planning • Performance data can generate graphs of utilization • RAM, Disk, etc. • Availability reports - CAUTION • Easy to generate -- even easier to generate wrong • Make sure your configurations actually catch problems • Will also include problems with Nagios itself :( • If you’re going to quote your availability numbers (SLAs, etc.) make sure you understand what you’re actually monitoring. -
Observing the Clouds: a Survey and Taxonomy of Cloud Monitoring Jonathan Stuart Ward† and Adam Barker*†
Ward and Barker Journal of Cloud Computing: Advances, Systems and Applications (2014) 3:24 DOI 10.1186/s13677-014-0024-2 RESEARCH Open Access Observing the clouds: a survey and taxonomy of cloud monitoring Jonathan Stuart Ward† and Adam Barker*† Abstract Monitoring is an important aspect of designing and maintaining large-scale systems. Cloud computing presents a unique set of challenges to monitoring including: on-demand infrastructure, unprecedented scalability, rapid elasticity and performance uncertainty. There are a wide range of monitoring tools originating from cluster and high-performance computing, grid computing and enterprise computing, as well as a series of newer bespoke tools, which have been designed exclusively for cloud monitoring. These tools express a number of common elements and designs, which address the demands of cloud monitoring to various degrees. This paper performs an exhaustive survey of contemporary monitoring tools from which we derive a taxonomy, which examines how effectively existing tools and designs meet the challenges of cloud monitoring. We conclude by examining the socio-technical aspects of monitoring, and investigate the engineering challenges and practices behind implementing monitoring strategies for cloud computing. Keywords: Cloud computing; Monitoring Introduction most accepted description of the general properties of Monitoring large-scale distributed systems is challeng- cloud computing comes from the US based National Insti- ing and plays a crucial role in virtually every aspect of tution of Standards and Technology (NIST) and other a software orientated organisation. It requires substantial contributors [3,4]: engineering effort to identify pertinent information and to • obtain, store and process that information in order for it On-demand self service: A consumer is able to to become useful. -
Supervision Utilisation De Check-MK
Supervision Utilisation de Check-MK Réseau Min2Rien Journée Thématique « retour d’expériences » - 13/02/2014 NICOLAS JAMIN – Administrateur Système – DSI de l’Académie de LILLE Supervision: Utilisation de Check-MK Plan . Présentation . Fonctionnement / Configuration . Création de scripts (Présentation et exemple) . Utilisation / Capture d’écran . Livestatus / Multisite Nicolas JAMIN – DSI de l’Académie de LILLE 14/02/2014 2 Supervision: Utilisation de Check-MK Presentation . Check-MK : add-on de supervision écrit en python . Nagios utilise des plugins de type actif 1 plugin = 1 service Exécution côté Nagios • Exemple: check_disk = test de l’espace disque . Check-MK utilise des plugins de type passif 1 plugin ~ 30 tests de base Exécution côté Client • Exemple: check_mk = check_disk + check_mem + check_ps + … . Forte baisse du taux d’utilisation des CPUs sur Nagios grâce à Check-MK . Remplace les plugins de type NRPE, NSCLIENT ++ Nicolas JAMIN – DSI de l’Académie de LILLE 14/02/2014 3 Supervision: Utilisation de Check-MK Fonctionnement Nicolas JAMIN – DSI de l’Académie de LILLE 14/02/2014 4 Supervision: Utilisation de Check-MK Configuration (sur le serveur NAGIOS) . Fichier main.mk Contient la configuration générale (seuil d’alerte, exclusions des services …) • Inventory_df_exclude_mountpoints = [‘/dev’,’/mnt/vzsnap0’] • Filesystem_default_level[‘levels’] = (90.0, 95.0) . Fichier tcp_hosts.mk Contient les hosts et hostgroups des serveurs auxquels ils appartiennent. • template124.expr.in.ac-lille.fr|linux|apt|openvz|ubuntu12 . Fichier hostgroups.mk Contient la définition des hostgroups. • (‘Serveurs Ubuntu 12.04’, [ ‘ubuntu12’ ], ALL_HOSTS), Nicolas JAMIN – DSI de l’Académie de LILLE 14/02/2014 5 Supervision: Utilisation de Check-MK Configuration (sur le serveur NAGIOS) . Plus aucune configuration côté Nagios Core • /etc/nagios/host.cfg, /etc/nagios/hostgroup.cfg … . -
The Checkmk Roadmap
Agenda 1.Recap: What’s coming for Checkmk 1.7 Insert Picture Here 2.The next 100+ features 3.The next big topics 2 Most features are nearing completion 0% 100% User Experience Cloud & Containers Network Monitoring Automation & Extensibility Performance + Extend the monitoring base 3 Only project in early stage: Redesigning the UX 0% 100% User Experience Redesigned user experience Raw Edition: Modern graphing + Grafana integration Improved reporting New dashlets and dashboard usability Pre-built intelligent dashboards Tags & Labels Forecast graphs and historic data painters 4 Nearly finished with Cloud & Containers for 1.7 0% 100% Cloud & Containers Prometheus integration Extended Kubernetes Monitoring Improved Dynamic Configuration More AWS plug-ins More Azure plug-ins 5 Finishing up ntop integration as main topic 0% 100% Network Monitoring ntop integration: Traffic dashboard ntop integration: Alerts ntop integration: Flows ntop integration: Host details VPN Monitoring More plug-ins for network monitoring 6 Check-API on final spurt, REST-API progressing 0% 100% Automation & Extensibility Check-, Inventory- and Bakery-API REST-API Distributed agent bakery and bakery configurability New notification plug-ins 7 Major performance improvements still underway 0% 100% Performance More scalability for check helpers Activate Changes: Incremental sync of configuration WATO improvements 8 Many checks done, more to come :-) 0% 100% + Extend the monitoring base New and extended plug-ins already done 9 New: Feature Packs ⬢ A lot of useful features are -
Pandora FMS: User Administration Guide
Pandora FMS 1.3.1 User Guide to Pandora FMS Administration Pandora FMS 1.3.1 User documentation April, 2008 Page 1 of 135 Pandora FMS 1.3.1 User Guide to Pandora FMS Administration Index 1 . Introduction to Pandora FMS ..................................................................................... 6 1.1. What is Pandora FMS? .............................................................................................. 6 1.2. What else can Pandora FMS do? ............................................................................... 6 1.2.1. Using agents ......................................................................................................7 1.3. Pandora FMS Architecture ........................................................................................ 9 1.4. Pandora FMS Agents................................................................................................ 10 1.4.1. Satellite Agents ............................................................................................... 12 1.4.2. XML data file ..................................................................................................12 1.5. Pandora FMS Servers............................................................................................... 14 1.6. Pandora FMS console...............................................................................................15 1.7. Database....................................................................................................................15 1.7.1. Compacting data ........................................................................................... -
1.3 SNMP Traps
PANDORA FMS NETWORK DEVICE MONITORING NETWORK DEVICE MONITORING PANDORA FMS pag. 2 INTRODUCTION 1. SNMP This document aims to explain how Pandora FMS is When we talk about SNMP Monitoring, the most able to monitor all network devices available on the important thing is to separate two concepts: Tests marke such as Routers, Switches, Modems, Access (polling) and Traps. points, etc. SNMP testing involves ordering Pandora FMS to execute a snmpget command to the SNMP device Pandora FMS can measure your network bandwidth such as a router or a switch or even a computer by consulting your router/switch through SNMP or with a SNMP agent installed. This is a synchronous by processing the network statistics sent by your operation (every X seconds). routers. Getting the correct information about the bandwidth and the consumption of the network In the opposite, receiving a SNMP trap is an asyn- devices is crucial to achieve a better network ma- chronous operation, that could happen or not, nagement. usually applied to get alerts coming from the device like, for example, when your switch drops a connec- These are some of the main things that Pandora tion with a port, or when your device gets too hot. FMS can do with your network: * Avoid bottlenecks in the network bandwidth and Pandora FMS works with SNMP using individual the server. OID’s. To Pandora FMS, each OID is a network mo- * Localize what applications and which servers are dule. So, if you want to monitor a 24 port Cisco Ca- consuming your bandwidth. talyst Switch, and be aware of the operative status * Provide better quality services to the users by of each port as well as the incoming and outgoing being proactive. -
Fireware V12.4 Release Notes (PDF)
Fireware v12.4 Update 2 Release Notes Supported Devices Firebox T10, T15, T30, T35, T50, T55, T70, M200, M270, M300, M370, M400, M440, M470, M500, M570, M670, M4600, M5600 FireboxV, Firebox Cloud, WatchGuard AP Release Date 4 April 2019 Release Notes Revision 10 October 2019 Fireware OS Build 592447 (updated for Fireware v12.4 Update 2 on 26 April 2019 589964 (original Fireware v12.4 release) WatchGuard System Manager Build 592565 (updated for Fireware v12.4 Update 2 on 26 April 2019 591532 (updated for WSM v12.4 Update 1 on 11 April 2019) 59007 (original WSM v12.4 release) WatchGuard AP Firmware AP100, AP102, AP200: 1.2.9.16 AP300: 2.0.0.11 AP125: 8.6.0-644.3 AP120, AP320, AP322, AP325, AP420: 8.6.0-646 Introduction Introduction On 29 April 2019, we release Fireware and WatchGuard System Manager (WSM) v12.4 Update 2 to resolve several issues, mostly related to Firebox management and the HTTPS proxy. See Enhancements and Resolved Issues for more information. On 11 April 2019, we released WatchGuard System Manager (WSM) v12.4 Update 1 to resolve an issue with Policy Manager. See Enhancements and Resolved Issues for more information. Fireware v12.4 is a significant release for Firebox T Series, Firebox M Series, FireboxV, and Firebox Cloud appliances. This release offers major enhancements, feature improvements, and resolves numerous bugs. Some of the key features included in this release are: SD-WAN for VPN and Private Lines This release extends SD-WAN benefits to more than just external WAN connections, enabling organizations to cut back on expensive MPLS connections. -
Ausreißer Check Mk
05/2014 Check_mk als Nagios-Alternative Titelthema Ausreißer Check_mk 34 Check_mk hat zurzeit Rückenwind: Es gilt nicht mehr als schnödes Nagios-Plugin und seine Oberfläche Multi- site lässt die Konkurrenz alt aussehen. Doch wird Check_mk diesem Ruf in der Praxis gerecht? Holger Gantikow www.linux-magazin.de wachen will und wie er alle Ergebnisse in einem Rutsch zurück. dies möglichst optimal Das erfordert nur eine einzige Verbin- mittels Hostgruppen und dung (Abbildung 1, rechts). Templates abbildet, da- Auch Nagios wertet anders aus: Mit dem mit seine Konfiguration Nagios Remote Plugin Executor (NRPE) wartbar bleibt. Zugleich stupst es in der Regel ein Plugin auf dem wächst aber die Last auf Host an, das etwa die RAM-Auslastung dem Nagios-Server mit je- misst. Das Plugin erhält einige Schwel- der Erweiterung: Je mehr lenwerte und liefert einen Status zurück Dienste und Hosts dieser (»OK«, »Warning«, »Critical«). überwacht, desto mehr Check_mk bewertet die Ergebnisse hin- wird die Serverhardware gegen erst auf dem Server. Dies hat den zum Engpass. Die Anzahl positiven Nebeneffekt, dass die Agents der „aktiven Checks“ pro auf den zu überwachenden Hosts keine Prüfintervall bestimmt, weitere Konfiguration benötigen. Der wie leistungsfähig der Check_mk-Server filtert die von den Server sein muss (Abbil- Agenten gelieferten Daten mit Hilfe der © Ljupco Smokovski, 123RF Smokovski, © Ljupco dung 1, links). Konfigurationsparameter und Schwellen- werte, die der Admin festgelegt hat, und Wer den Zustand von mehr als einer Check_mk am Start schickt die Ergebnisse an Nagios weiter. Handvoll Systeme im Blick behalten möchte, muss auf handgestrickte Shell- Speziell gegen diese beiden Probleme, Testlauf skripte oder gelegentliche Kontrollen gegen die komplexe Konfiguration und verzichten und braucht ein vollwertiges die hohe Serverlast, möchte Check_mk Ob Check_mk hält, was es verspricht, Monitoring. -
Licensing Information User Manual Release 9.0 Revision 1.2
Oracle SD-WAN Edge Licensing Information User Manual Release 9.0 Revision 1.2 October 2020 Licensing Information User Manual Oracle SD-WAN Edge 8.2 Oracle SD-WAN Edge Licensing Information ser !an"al# Release 9.0 Copyright Information $o%yrig't ( 2020# Oracle and)or its a*liates. All rig'ts reser+ed. ,'is soft-are and related doc"mentation are %rovided "nder a license agreement containing restrictions on "se and disclosure and are %rotected by intellect"al %ro%ert& la-s. E.ce%t as e.%ressly %ermitted in &o"r license agreement or allo-ed by la-# &o" may not "se# co%&# re%rod"ce# translate# broadcast# modif&# license# transmit# distrib"te# e.'ibit# %erform# %"blish# or display any %art# in any form# or by any means. Re+erse engineering# disassembl&# or decom%ilation of t'is soft-are# "nless re/"ired by la- for intero%erabilit&# is %ro'ibited. ,'e information contained 'erein is sub0ect to change -it'o"t notice and is not -arranted to be error-free. If &o" find any errors, %lease re%ort t'em to "s in -riting. If t'is is soft-are or related documentation t'at is deli+ered to t'e .S. 2o+ernment or an&one licensing it on be'alf of t'e .S. 2o+ernment# t'en t'e follo-ing notice is a%%licable3 .S. 2O4ERN!EN, END SERS3 Oracle %rograms, incl"ding any o%erating s&stem# integrated soft-are# any %rograms installed on t'e 'ard-are# and)or documentation# deli+ered to .S. -
Escribir El Título De La Tesis
UNIVERSIDAD TÉCNICA DE AMBATO FACULTAD DE INGENIERÍA EN SISTEMAS ELECTRÓNICA E INDUSTRIAL CARRERA DE INGENIERÍA EN SISTEMAS COMPUTACIONALES E INFORMÁTICOS TEMA: “SISTEMA DE ANÁLISIS Y CONTROL DE RED DE DATOS & VoIP PARA EL GOBIERNO PROVINCIAL DE TUNGURAHUA” Trabajo de Graduación. Modalidad: Proyecto de Investigación, presentado previo la obtención del título de Ingeniero en Sistemas Computacionales e Informáticos. SUBLÍNEA DE INVESTIGACIÓN: Redes de Computadoras AUTOR: Franklin Edmundo Escobar Vega TUTOR: Ing. David Omar Guevara Aulestia Mg. Ambato - Ecuador Diciembre, 2015 APROBACIÓN DEL TUTOR En mi calidad de Tutor del Trabajo de Investigación sobre el Tema: “SISTEMA DE ANÁLISIS Y CONTROL DE RED DE DATOS & VoIP PARA EL GOBIERNO PROVINCIAL DE TUNGURAHUA.”, del señor Franklin Edmundo Escobar Vega, estudiante de la Carrera de Ingeniería en Sistemas Computacionales e Informáticos, de la Facultad de Ingeniería en Sistemas, Electrónica e Industrial, de la Universidad Técnica de Ambato, considero que el informe investigativo reúne los requisitos suficientes para que continúe con los trámites y consiguiente aprobación de conformidad con el Art. 16 del Capítulo II, del Reglamento de Graduación para Obtener el Título Terminal de Tercer Nivel de la Universidad Técnica de Ambato. Ambato, Diciembre de 2015 EL TUTOR Ing. David O. Guevara A., Mg. ii AUTORÍA El presente trabajo de investigación titulado: “SISTEMA DE ANÁLISIS Y CONTROL DE RED DE DATOS & VoIP PARA EL GOBIERNO PROVINCIAL DE TUNGURAHUA”. Es absolutamente original, auténtico y personal, en tal virtud, el contenido, efectos legales y académicos que se desprenden del mismo son de exclusiva responsabilidad del autor. Ambato, Diciembre 2015 Franklin Edmundo Escobar Vega CC: 0503474827 iii DERECHOS DE AUTOR Autorizo a la Universidad Técnica de Ambato, para que haga uso de este Trabajo de Titulación como un documento disponible para la lectura, consulta y procesos de investigación. -
Ubuntu Server Guide Basic Installation Preparing to Install
Ubuntu Server Guide Welcome to the Ubuntu Server Guide! This site includes information on using Ubuntu Server for the latest LTS release, Ubuntu 20.04 LTS (Focal Fossa). For an offline version as well as versions for previous releases see below. Improving the Documentation If you find any errors or have suggestions for improvements to pages, please use the link at thebottomof each topic titled: “Help improve this document in the forum.” This link will take you to the Server Discourse forum for the specific page you are viewing. There you can share your comments or let us know aboutbugs with any page. PDFs and Previous Releases Below are links to the previous Ubuntu Server release server guides as well as an offline copy of the current version of this site: Ubuntu 20.04 LTS (Focal Fossa): PDF Ubuntu 18.04 LTS (Bionic Beaver): Web and PDF Ubuntu 16.04 LTS (Xenial Xerus): Web and PDF Support There are a couple of different ways that the Ubuntu Server edition is supported: commercial support and community support. The main commercial support (and development funding) is available from Canonical, Ltd. They supply reasonably- priced support contracts on a per desktop or per-server basis. For more information see the Ubuntu Advantage page. Community support is also provided by dedicated individuals and companies that wish to make Ubuntu the best distribution possible. Support is provided through multiple mailing lists, IRC channels, forums, blogs, wikis, etc. The large amount of information available can be overwhelming, but a good search engine query can usually provide an answer to your questions.