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Index
Title Page Copyright and Credits
Zabbix 4 Network Monitoring Third Edition
About Packt
Why subscribe? Packt.com
Contributors
About the authors About the reviewers Packt is searching for authors like you
Preface
Who this book is for What this book covers To get the most out of this book
Download the example code files Download the color images Conventions used
Get in touch
Reviews
Getting Started with Zabbix
Technical requirements The first steps in monitoring Zabbix features and architecture
Installation Choosing the version and repository Hardware requirements
Installing from the packages
Red Hat Enterprise Linux (RHEL)/CentOS
EPEL The Zabbix repository
Ubuntu/Debian
Installing from source
The server and agent Software requirements Downloading the source
Compilation
Dash or underscore Initial configuration Creating and populating the database Starting up
Verifying the service's state The web frontend Prerequisites and setting up the environment
Using the web frontend configuration wizard
Step 1 – welcome Step 2 – PHP prerequisites Step 3 – database access Step 4 – Zabbix server details Step 5 – summary Step 6 – writing the configuration file Step 7 – finishing the wizard Step 8 – logging in
Summary Questions Further reading
Getting Your First Notification
Exploring the frontend
The user profile
Monitoring quickstart
Creating a host Creating an item Introducing simple graphs Creating triggers Configuring email parameters Creating an action
Information flow in Zabbix Let's create some load Basic item configuration
Monitoring categories
Availability Performance Security Management Efficiency
Item types How items can be monitored
Using global search Summary Questions Further reading
Monitoring with Zabbix Agents and Basic Protocols
Using the Zabbix agent
Passive items
Cloning items Manually querying items
Active items An active agent with multiple servers Supported items Choosing between active and passive items
Item scheduling Simple checks
Setting up ICMP checks
Connecting all of the pieces
Key parameter quoting Positional parameters for item names Using mass update
Value mapping Units
Custom intervals
Flexible intervals Custom scheduling
Copying items
Summary Questions Further reading
Monitoring SNMP Devices
Using Net-SNMP
Using SNMPv3 with Net-SNMP
The engine ID
Authentication, encryption, and context
Adding new MIBs Polling SNMP items in Zabbix
Translating SNMP OIDs Dynamic indexes SNMP bulk requests
Receiving SNMP traps
Using embedded Perl code
Filtering values by received data Filtering values by originating host Debugging Handling the temporary file SNMP Trap Translator (SNMPTT)
Using a custom script
Filtering the traps Custom mapping Database lookups
Summary Questions Further reading
Managing Hosts, Users, and Permissions
Hosts and host groups
Host inventory
Editing inventory data manually Populating inventory data automatically
Host maintenance
Creating maintenance periods
Collecting data during maintenance Not collecting data during maintenance Maintenance period options
One-time only maintenance Daily maintenance Weekly maintenance Monthly maintenance
Ad hoc maintenance
Users, user groups, and permissions
Authentication methods Creating a user Creating user groups Permissions and maintenance
Summary Questions Further reading
Detecting Problems with Triggers
Triggers
The trigger-and-item relationship
Trigger dependencies
Constructing trigger expressions
Preventing trigger flapping Checking for missing data
Triggers that time out
Triggers with adaptable thresholds Triggers with a limited period Relative thresholds or time shift Verifying system time Human-readable constants Customizing how triggers are displayed
Triggering severities Triggering display options
Event details Event generation and recovery expression
Using event tags for correlation Summary Questions Further reading
Acting upon Monitored Conditions
Actions
Limiting conditions when alerts are sent
Additional action conditions
Complex conditions
Dependencies and actions Media limits for users
Sending out notifications
Using macros Sending recovery messages
Escalating once a threshold is reached
Runner analogy
Using scripts as media Integrating with issue management systems
Bugzilla Computer Associates Unicenter Service Desk Manager Atlassian JIRA
Remote commands
Global scripts
Configuring global scripts Reusing global scripts in actions
Summary Questions Further reading
Simplifying Complex Configurations with Templates
Creating a template Linking templates to hosts
Handling default templates Changing the configuration in a template Macro usage
User macros
Using multiple templates
Unlinking templates from hosts
Using mass update Nested templates Summary Questions Further reading
Visualizing Data with Screens and Slideshows
Configuring and sharing dashboards
Configuring the dashboard Sharing our dashboard
Screens
Dynamic screens Additional screen elements Templated screens
Slide shows Showing data on a big display
Challenges
Non-interactive display Information overload Displaying a specific section automatically
Summary Questions Further reading
Advanced Item Monitoring
Log file monitoring
Monitoring a single file Filtering for specific strings Monitoring rotated files Alerting on log data
Event tags
Extracting part of the line Parsing timestamps Viewing log data
Reusing data on the server
Calculated items
Quoting in calculated items Referencing items from multiple hosts
Aggregate items
Aggregating across multiple groups
User parameters
Just getting it to work Querying data that the Zabbix agent doesn't support Flexible user parameters Level of the details monitored Environment trap Things to remember about user parameters
Wrapper scripts
When not to use user parameters
External checks
Finding a certificate expiry time Determining certificate validity
Sending in the data
Using an agent daemon configuration file Sending values from a file Sending timestamped values
SSH and Telnet items
SSH items Telnet items
Custom modules Value preprocessing and dependent items Summary Questions Further reading
Automating Configuration
LLD
Network interface discovery
Automatically creating calculated items Automatically creating triggers Automatically creating graphs Filtering discovery results
Filesystem discovery
Introducing the LLD JSON format Including discovered graphs in screens Custom thresholds with user macro context
CPU discovery SNMP discovery Creating custom LLD rules
Reimplementing CPU discovery Discovering MySQL databases
Global regular expressions
Testing global regexps Usage in the default templates
Network discovery
Configuring a discovery rule Viewing the results Reacting to the discovery results Uniqueness criteria
Active agent auto-registration
Auto-registration metadata
Summary Further reading
Monitoring Web Pages
Monitoring a simple web page
Creating a web-monitoring scenario Other scenarios and step properties Alerting on web scenarios
Logging into the Zabbix interface
Step 1 – checking the first page Step 2 – logging in Step 3 – checking login Step 4 – logging out Step 5 – checking logout
Authentication options Using agent items
Getting the page Checking page performance Extracting content from web pages
Extracting content using the HTTP agent
Summary Questions Further reading
High-Level Business Service Monitoring
Deciding on the service tree Setting up IT services
Creating test items and triggers Configuring IT services Sending in the data
Viewing reports Specifying uptime and downtime Summary Questions Further reading
Monitoring IPMI Devices
Getting an IPMI device Preparing for IPMI monitoring Setting up IPMI items
Creating an IPMI item
Monitoring discrete sensors
Using the bitwise trigger function
Summary Questions Further reading
Monitoring Java Applications
Setting up the Zabbix Java gateway Monitoring JMX items
Querying JMX items manually What to monitor? JMX discovery
Summary Questions Further reading
Monitoring VMware
Technical requirements Preparing for VMware monitoring Automatic discovery Available metrics The underlying operation
VMware LLD configuration
Host prototypes Summarizing default template interaction Server operation and configuration details
Summary Questions Further reading
Using Proxies to Monitor Remote Locations
Active proxies and passive proxies Setting up an active proxy
Monitoring a host through a proxy
Proxy benefits Proxy limitations
Proxy operation
Proxies and availability monitoring
Method 1 – last access item Method 2 – internal proxy buffer item Method 3 – custom proxy buffer item
Setting up a passive proxy Tweaking the proxy configuration Summary Questions Further reading
Encrypting Zabbix Traffic
Overview Backend libraries PSK encryption Certificate-based encryption
Being our own authority Setting up Zabbix with certificates
Concerns and further reading Summary Questions Further reading
Working Closely with Data
Getting raw data
Extracting from the frontend Querying the database
Using data in a remote site
Diving further into the database
Managing users Changing existing data
Finding out when The when in computer language Finding out what Performing the change
Using XML import/export for configuration
Exporting the initial configuration Modifying the configuration
The XML export format Scripting around the export
Importing modified configuration Generating hosts Importing images
Starting with the Zabbix API
Simple operations
Obtaining the API version Logging in Enabling and disabling hosts Creating a host Deleting a host Creating a value map Obtaining history and trends
Issues with the Zabbix API Using API libraries
Summary Questions Further reading
Zabbix Maintenance
Internal monitoring
New values per second Zabbix server uptime Cache usage Internal process busy rate Unsupported items and more problems
Counting unsupported items Reviewing unsupported items Internal events and unknown triggers
Backing things up
Backing up the database Restoring from a backup Separating configuration and data backups
Upgrading Zabbix
General version policy Long-term support and short-term support The upgrade process
Minor version upgrade
Upgrading binaries
Upgrading the frontend Major-level upgrades Database versioning Gathering data during the upgrade The frontend configuration file
Compatibility
Performance considerations Who did that? Exploring configuration file parameters
Zabbix agent daemon and common parameters Zabbix server daemon parameters
Summary Questions Further reading
Troubleshooting
Introduction Common issues
Installation
Compilation Frontend Backend Locked out of the frontend
Monitoring
General monitoring Monitoring with the Zabbix agent
User parameters
SNMP devices IPMI monitoring ICMP checks Problems with simple checks Problems with zabbix_sender and trapper items General issues
Triggers Actions
Discoveries and autoregistration
Troubleshooting Zabbix
The Zabbix log file format Reloading the configuration cache Controlling running daemons Runtime process status
Further debugging
Being Part of the Community
Community and support
Chatting on IRC Using the Zabbix Wiki Using the Zabbix forum Filing issues on the tracker Meeting in person
The Zabbix summit Local communities
Following the development
Getting the source
Daily snapshots Accessing the version-control system
Looking at the changesets
Translating Zabbix Commercial support options
Assessment
Chapter 1: Getting Started with Zabbix Chapter 2: Getting Your First Notification Chapter 3: Monitoring with Zabbix Agents and Basic Protocols Chapter 4: Monitoring SNMP Devices Chapter 5: Managing Hosts, Users, and Permissions Chapter 6: Detecting Problems with Triggers Chapter 7: Acting upon Monitored Conditions Chapter 8: Simplifying Complex Configurations with Templates Chapter 9: Visualizing Data with Screens and Slideshows Chapter 10: Advanced Item Monitoring Chapter 12: Monitoring Web Pages Chapter 13: High-Level Business Service Monitoring Chapter 14: Monitoring IPMI Devices Chapter 15: Monitoring Java Applications Chapter 16: Monitoring VMware Chapter 17: Using Proxies to Monitor Remote Locations Chapter 18: Encrypting Zabbix Traffic Chapter 19: Working Closely with Data Chapter 20: Zabbix Maintenance
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