nagios conference 2011 - jeff sly - case study nagios @ nu skin
DESCRIPTION
Jeff Sly's presentation on using Nagios XI to consolidate multiple monitoring products. The presentation was given during the Nagios World Conference North America held Sept 27-29th, 2011 in Saint Paul, MN. For more information on the conference (including photos and videos), visit: http://go.nagios.com/nwcnaTRANSCRIPT
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Who is in the Audience?
How many of you are: Suppliers of Nagios or some value add-on for
Nagios? Customers using Nagios? Just implementing Nagios or expanding
implementation? Using NagiosXI?
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Who is Nu Skin?
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Our Technology Footprint
Ecommerce – Home grown Applications – Java, EJB, ABAP, .NetDatabases – Oracle, MySQL, MSSQLOS – HPUX, Redhat, Windows, VMWareERP – SAP Supply Chain, CRM, FI
Datacenters – 6 locations in 6 countriesOffices – 50 Countries
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Monitoring Goals
Monitoring presents operations with a completely integrated global view.
Good monitoring is proactive; it helps teams prevent problems from becoming outages.
Good monitoring helps minimize outage downtime, quickly identify root cause and contacts correct people.
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Centralized Monitoring System
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Our Monitoring History
We tried for 10 years…
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Do it all in ‘One Tool Projects’
One Monitoring Tool to rule them all: Mercury SiteScope Remedy Help Desk HP OpenView Quest Foglight Home grown (several) One monitoring person
• He decided to quit!
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Could never get everything
All Failed – We always gave up! Why?Servers and agents that were proprietaryHuge foot print inefficient performanceSteep learning curveVery expensiveUpdates costly and very time consumingSystem Administrators like their own
scripts, can see what they are doing
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Resulting Monitoring Issues
Tried to make Operations clearing house for all warnings and alerts from 10+ tools
Operations was overwhelmed Took 4 process steps and lots of software
to notify of critical failuresMost Administrators setup own private
monitoring to receive warningsMany false notificationsLate notifications
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As Is (start of project)
Our Business Customers were Unhappy
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Old Monitoring Work Flow
Four steps to notify system administrator
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Network
Foglight
Email HelpDesk
Error
SystemScripts
BAC
HP NNM
SiteScope 8
Sitescope 6
Step 1: Everything Emails Operations
NagiosDatabase
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Network
Foglight
SystemScripts
BAC
HP NNM
SiteScope 8
Sitescope 6
Step 2: Operations Opens Email
NagiosDatabase
Email HelpDesk
Error
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Email HelpDesk
Error
Step 3: Operations Checks Source
Network
Foglight
SystemScripts
BAC
HP NNM
SiteScope 8
Sitescope 6
NagiosDatabase
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Email HelpDesk
Error
Step 4: Operations Calls admin
Network
Foglight
SystemScripts
BAC
HP NNM
SiteScope 8
Sitescope 6
NagiosDatabase
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Inventory of Existing Checks
Regular Expression found on Web Page Monitoring
HTTP Check - Up or Down
Ping Host Up or Down
PORT monitoring FTP checking SMTP checking
SNMP monitoring - no trap catching yet
Radius DNS monitoring Disk Space monitoring
CPU and Load Average monitoring
Memory Monitoring
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Inventory of Existing Checks
Service monitoring Transaction monitoring -
page load times – performance graph
Website click through (Webinject not working)
Log File monitor –parse for Errors
Java HEAP, Thread, Threadlock monitoring
Apache thread and worker count monitors
Ecommerce shop monitors
Email can send and receive
SQL query ODBC (catalog ODBC had bugs)
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To Be
Happy Customers
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Key Ideas
1. MoM
2. Tool Requirements
3. Shared Ownership
4. Lowest Level
5. Nagios Monitor Method
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Idea 1: MoM
Our first “break though” was the idea that even through we needed a centralized view for all monitoring that did not mean all monitoring had to be done by one monitoring tool.
We had to pick a “Manager
of the Monitors” (MoM)
to bring together the best of
breed monitoring.
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MoM - according to Gartner
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Idea 2: Tool Requirements
Open – not proprietary and closedMainstream – wanted good native support and
strong communityInterface – to 3rd Party MonitoringFlexible – adapt to many types of monitoringEfficient – minimal foot print on production
servers, not chatty on networkNotification – granular controlReliable – good clean architectureUsability – GUI interface, reporting
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Idea 3: Shared Ownership
Core team Operation of Monitoring Environment: backups,
upgrades, & custom plug-ins Monitoring Experts Training
Monitoring leads in Development & Admin teams: Set up own monitors Keep own monitors current Adjust monitors If something is not monitored not core teams fault
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Email HelpDesk
Error
Operations Owned Monitoring
Network
Foglight
SystemScripts
BAC
HP NNM
SiteScope 8
Sitescope 6
NagiosDatabase
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Team Leads Own Monitoring
Network
SystemScripts
SAP
Asia
Europe
WebDatabase
Operations
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How to Guides
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How to Setup NRPE - HPUX
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Idea 4: Lowest Level
Handle alerts at the lowest possible level in the organization
Only forward alerts if not handled at lower levels before they become critical
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Handle events at lowest level
Network
SystemScripts
SAP
Asia
Europe
WebDatabase
Operations
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Only forward unhandled alerts
Network
SystemScripts
SAP
Asia
Europe
WebDatabase
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Idea 5: Nagios Monitor Method
Choose the Nagios Monitoring MethodActive Check from Nagios Server (normal)Active Check performed by remote client
NRPE, NSClientPassive Check – Listen to 3rd party
monitors NSCA
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Active Local Check
DB
DBMonitor
Web
Unix
Win
HTTP or
Ping
Nagios
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Active Remote Check - UX
DB
DBMonitor
Web
Unix
Win
CPU, RAM
(NRPE)
Nagios
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Active Remote Check - Win
DB
DBMonitor
Web
Unix
Win
CPU, RAM(NSClient)
Nagios
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Passive 3rd Party Alert
DB
DBMonitor
Web
Unix
Win
Nagios
3rd Party Alert NSCA
3rd Party Check DB
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Bonus Idea - Tune
Tune the databaseAdd Ram Drive
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Tune the Database
Modify contents of the /etc/my.cnf [mysqld] section.
tmp_table_size=524288000max_heap_table_size=524288000table_cache=768set-variable=max_connections=100wait_timeout=7800query_cache_size = 12582912query_cache_limit=80000thread_cache_size = 4join_buffer_size = 128K
http://web3us.com Info on: MySQL Tuning, Nagios Tuning
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RAM DriveCreate a RAM disk for Nagios tempory files
I created a ramdisk by adding the following entry to the /etc/fstab file:
none /mnt/ram tmpfs size=500M 0 0
Mount the disk using the following commands
# mkdir -p /mnt/ram; mount /mnt/ram
Verify the disk was mounted and created
# df -k
Modify the /usr/local/nagios/etc/nagios.cfg file with the following tuned parameters
temp_file=/mnt/ram/nagios.tmptemp_path=/mnt/ramstatus_file=/mnt/ram/status.datprecached_object_file=/mnt/ram/objects.precacheobject_cache_file=/mnt/ram/objects.cache
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Implementation Methodology
Site SurveyInventory existing monitorsProof of conceptBuild new environmentMigrate monitors from each platform to
Nagios, one at a timeIntegrate OEM, and to send monitors to
Nagios
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Three Project Phases
Deliver something useful in each phaseBuild a level at a time
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Phase I1. Set up a pilot of Nagios XI using Trial License.
2. Set up Foglight monitoring of JVM (Java Virtual Machine).
3. Purchase NagiosXI and Consulting Support
4. Bring in a consultant for two weeks to help set up the architecture and help us work with the system.
5. Documentation Web Site for Nagios learning's and “How to guides”
6. Define a set of standards and guidelines to follow to help aid an effective monitoring process.
7. Backups on Running on Production Nagios Server
8. Set up services which aren't being caught right now and move a few of the important services over to the new Nagios XI monitoring system.
9. Test Nagios plugins and server performance
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Phase II1. Migrate off of Sitescope 6 and shutdown
2. Migrate off of Sitescope 8 and shutdown
3. Decommission Foglight
4. Clean up the old monitoring server
5. Migrate the network team from old Nagios to core NagiosXI system
6. Set up standby NagiosXI system, cron to replicate weekly
7. Research missing alerts and add them to the new NagiosXI system
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Phase III1. Implement Global Monitoring Add monitors for existing international systems Add monitors using JMX to monitor Java servers Nagios Remote Process Execution (NRPE) to monitor remotely Remote Monitoring for Windows Servers (NS Client++) Implement notification and escalation of alerts Add monitors for critical business functions
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Phase III continued…2. Corporate Enhancements Request recurring down time enhancement from Ethan Galstad Automate refresh of NagiosXI standby system Build Network Map Retire Windows SiteScope Add monitors for phone systems Add monitors to data center (UPS, Temperature, Humidity) Integrate to SAP Tidal monitoring tool
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Phase III continued…3. Business Business review and approve SLA (using business terms) Monitor both the Business Functions and the individual point
devices that provide the Business Function Follow the Sun with Eyes on Glass. Training
How to setup alerts How to receive alerts How to report on performance graphs
Create a new Dashboard for HelpDesk and International IT Staff
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Inventory of Monitor ChecksQty Things we figured out how to do from Nagios Solution50 Regular Expression found on Web Page Monitoring HTTP Check
170 HTTP Check - Up or down HTTP Check600 Ping Host Up or down Nagios Check alive100 PORT monitoring Check TCP port #10 FTP checking Nagios FTP plugin8 SMTP checking Nagios SMTP plugin5 SNMP monitoring - no trap catching yet Not Using 4 Radius Nagios plugin, difficult
16 DNS monitoring Nagios Check DNS
250 Disk Space monitoringNSClient, NRPE -Nagios Disk plugin
170 CPU and Load Average monitoringNSClient, NRPE - Custom Linux plugin
170 Memory MonitoringNSClient, NRPE -Custom Linux plugin
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Inventory continued…Qty Things we figured out how to do from Nagios Solution
170 Memory MonitoringNSClient, NRPE -Custom Linux plugin
80 Service monitoringNSClient, NRPE with bash shell script
30Transaction monitoring - page load times - performance data graphs
Custom using Selenium Scripts
30 Website click through (webinject not working) Custom using mechanize10 Log File monitor -p parse for Errors NRPE - script parse log files
6 Day HEAP, Thread, Threadlock monitoringJava Management Extensions (JMX)
8 Apache thread and worker count monitors Custom plugin Apache statics
18 ShopApp and SignupApp monitorsHTTP Check Custom app status page
5 Email can send and receive Custom Nagios plugin
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Nagios XI Interface
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Data Centers in 7 Countries
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Goal Quick Notification & Recovery from Outage
Type of Monitor
Notification of outages with details on which system is down, so we know who to contact
Solution Migrate from Sitescope, Openview to NagiosXI
IT Operations
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Goal Prevention of outage
Type of Monitor
Warnings about conditions before outages occur, allow for corrective actions that will prevent likely outages
Solution Migrate from Sitescope, Openview to NagiosXI, Integrate OEM SAP and Scripts with Nagios
IT Team Managers
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Summary
1. MoM ~ Manager of Managers Allow specialized tools
2. Tool Requirements, enough but not all
3. Ownership for implementation, shared
4. Handle alerts, lowest level in organization
5. Choose Nagios monitoring method
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Tips, Tricks & Demos
Nagios XI Large Implementation
Day 3, 2:00 Track 3 (Nate Broderick)3 DemosPerformance challenges and solutionsIntegrating monitoring solutions OracleMigrating from BAC & FoglightCustomizationGraphing, and more.