This is a Zenoss monitoring system extension (ZenPack) for advanced Linux monitoring based on original Zenoss Core's LinuxMonitor plugin. This module is a drop-in replacement of existing module by Zenoss, original module must be uninstalled first.

Features:

• NEW: system load graph
• NEW: total system disk I/O activity graph
• NEW: modeler community.cmd.linux.lsb_release to get OS name/version
• NEW: modeler community.cmd.linux.dmidecode to get hardware
• name and manufacturer
• serial number
• tag (SKU Number)
• rack chassis size
• NEW: software RAID (md) monitoring via /proc/mdstat
• detect RAID type, size, stripe size
• status monitoring
• I/O activity graph per device
• NEW: very simple hard disks modeling via /sys/block/
• detect vendor and type only
• I/O activity graph per device
• NEW: collect installed software
• Red Hat via rpm
• Debian and Ubuntu via dpkg-query
• NEW: modeler community.cmd.linux.lspci to get expansion cards
• configurable types to ignore via zLinuxExpansionCardMapMatchIgnoreTypes
• improved memory and swap utilization graphs
  • graph allocated space
  • nice event texts (e.g.: memory threshold: 97.0% used (3.8GB free))
• improved filesystem monitoring
  • per filesystem monitoring to avoid hangups on e.g. NFS problems
  • model only last filesystem mounted on each mount point
  • two-level thresholds (warning, critical)
  • nice event texts (e.g.: disk space threshold: 99.3% used (1.7MB free))
  • support for zFileSystemMapIgnoreTypes
• improved CPU utilization graph
  • show time spent in nice, I/O wait, steal, IRQ, soft IRQ
  • all graph points are now stacked area
• improved network interfaces monitoring
  • NEW: modeler community.cmd.linux.ip using ip address show
  • interface graphs: throughput, packets, errors
• improved IP service monitoring
  • NEW: inherited community.cmd.linux.netstat_an
  • do not model services listening on 127.* or ::1
  • identify IPv6 protocols: tcp6, udp6
• improved process monitoring
  • added graphs for process CPU time, RSS, count
• improved processor modeling
  • added shortened manufacturer

Requirements server:

• Zenoss 3.2 or later
• Advanced Device Details ZenPack
• uninstall existing Zenoss Core's LinuxMonitor

Requirements hosts:

• dmidecode enabled via sudo
• installed lsb_release command

No prebuilt packages yet.

git clone git://github.com/CERIT-SC/ZenPacks.zenoss.LinuxMonitor.git
zenpack --link --install ZenPacks.zenoss.LinuxMonitor
zenoss restart

Following modelers are available:

• zenoss.cmd.linux.cpuinfo - host CPUs
• community.cmd.linux.ip - network interfaces
• community.cmd.linux.netstat_an - IP services
• community.cmd.linux.df - filesystems
• community.cmd.linux.lsb_release - OS name/version
• community.cmd.linux.dmidecode - HW manufacturer/model, S/N, tag, rack size
• community.cmd.linux.sys_block - hard disks
• community.cmd.linux.mdstat - logical disks (Linux software RAID)
• community.cmd.linux.lspci - expansion cards
• Software:
• community.cmd.linux.sw.dpkg
• community.cmd.linux.sw.rpm

These zProperties can be used for customization:

• zThresholdMemoryCrit - memory critical threshold [%]
• zThresholdSwapCrit - swap critical threshold [%]
• zThresholdFilesystemLow - filesystem space warning threshold [%]
• zThresholdFilesystemCrit - filesystem space critical threshold [%]
• zThresholdLoadOffset - host load offset threshold (computed by sum of CPUs multiplied by offset)
• zFileSystemMapIgnoreNames - RE matching mount names to ignore
• zFileSystemMapIgnoreTypes - list of filesystem types to ignore
• zInterfaceMapIgnoreNames - RE matching interface names to ignore
• zInterfaceMapIgnoreTypes - RE matching interface types to ignore
• zIpServiceMapMaxPort - IP service max. port to model
• zHardDiskMapMatch - RE matching hard disks to model
• zLinuxExpansionCardMapMatchIgnoreTypes - list of PCI device types (classes) to ignore

dmidecode is required for modeling S/N, P/N (tag), hardware manufacturer/model and chassis size. Command is executed via sudo under privileged user and similar configuration must be present in your /etc/sudoers (use visudo for change):

Defaults:zenoss !requiretty
%oneadmin ALL=(ALL) NOPASSWD: /usr/sbin/dmidecode *

• Overview

• Performance graphs
• Hard Disks
• Logical Disks
• Interfaces
• OS Processes
• File Systems
• Processors
• Software

Please report your problems or feature requests via GitHub issues tracker