mirror of
https://github.com/nicolargo/glances.git
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398 lines
12 KiB
Plaintext
398 lines
12 KiB
Plaintext
[](https://flattr.com/thing/484466/nicolargoglances-on-GitHub)
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=============================
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Glances -- Eye on your system
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=============================
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## Description
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Glances is a CLI curses based monitoring tool for GNU/Linux and BSD OS.
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Glances uses the PsUtil library to get information from your system.
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It is developed in Python.
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Console (80x24) screenshot:
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Wide terminal (> 90x24) screenshot:
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## Installation
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Pre-requisites (information for packagers):
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* Python 2.6+ (not tested with Python 3+)
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* build-essential (for installation via Pypi and setup.py)
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* python-dev (for installation via Pypi)
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* python-setuptools (for the installation via setup.py)
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* python-psutil 0.4.1+ (replace the old libstatgrab's lib)
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* python-jinja2 2.0+ (optional for HTML export)
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* pysensors (Python lib for sensors stats)
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### From package manager (very easy way)
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Packages exist for Debian (SID), Arch, Fedora, Redhat, FreeBSD...
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### From PyPi (easy and cross platform way)
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PyPi is an official Python package manager.
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You first need to install pypi on your system. For example on Debian/Ubuntu:
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$ sudo apt-get update
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$ sudo apt-get install python-pip build-essential python-dev
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Then install the latest Glances version:
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$ sudo pip install Glances
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Note: if you are behind an HTTP Proxy, you should use
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$ sudo pip install --proxy=user:password@url:port Glances
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### From PPA (easy way for Ubuntu/Mint...)
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Arnaud Hartmann (thanks to him !) maintains a PPA with the latest Glances version:
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The PPA is available for Ubuntu version 9.10 to 12.04.
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To install the PPA just enter:
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$ sudo add-apt-repository ppa:arnaud-hartmann/glances-stable
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$ sudo apt-get update
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Then install Glances:
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$ sudo apt-get install glances
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### From [Homebrew](http://mxcl.github.com/homebrew/) via PyPi (OS X)
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$ brew install brew-pip
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$ export PYTHONPATH=$(brew --prefix)/lib/python2.7/site-packages
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$ brew pip Glances
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If you have the following error:
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Error: Failed executing: pip install glances==1.X --install-option=--prefix=/usr/local/XXX/glances/1.X (.rb:)
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This link will help resolve the above errors:
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https://github.com/mxcl/homebrew/wiki/bug-fixing-checklist
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Try to runs:
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$ pip install glances==1.X --install-option=--prefix=/usr/local/XXX/glances/1.X
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$ brew link Glances
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### Concerning Windows operating system
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Windows operating system only support the Glances in server mode. So if you ran Glances on Windows, it will be automaticaly running in server mode.
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To install Glances on you system:
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* Install [Python for Windows](http://www.python.org/getit/)
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* Install the [PsUtil lib](https://code.google.com/p/psutil/downloads/list)
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* Download the latest [Glances version](https://raw.github.com/nicolargo/glances/master/glances/glances.py)
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I need contributors to package Glances for Windows (for exemple using [PyInstaller](http://www.pyinstaller.org/)).
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### From source
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Get the latest version (form GitHub):
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$ rm -rf /tmp/nicolargo-glances-*
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$ wget -O /tmp/glances-last.tgz https://github.com/nicolargo/glances/tarball/master
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Glances use a standard GNU style installer (for a Debian like system):
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$ sudo apt-get update
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$ sudo apt-get install python-setuptools build-essential python-dev
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$ cd /tmp
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$ tar zxvf glances-last.tgz
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$ cd nicolargo-glances-*
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$ sudo python setup.py install
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## Running
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### In standalone mode
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If you want to monitor your local machine, just run:
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$ glances
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### In client/server mode
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If you want to remotely monitor a machine (called server) from another one (called client).
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Run this command on the server:
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server$ glances -s
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and this one on the client:
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client$ glances -c @server
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where @server is the IP address or hostname of the server
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Glances uses a [XML/RPC](http://docs.python.org/2/library/simplexmlrpcserver.html) server and can be used by another client software.
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## User guide
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By default, stats are refreshed every second, to change this setting, you can
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use the -t option. For example to set the refresh rate to 5 seconds:
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$ glances -t 5
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Importants stats are colored:
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* GREEN: stat counter is "OK"
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* BLUE: stat counter is "CAREFUL"
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* MAGENTA: stat counter is "WARNING"
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* RED: stat counter is "CRITICAL"
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When Glances is running, you can press:
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* 'h' to display a help message with the keys you can press
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* 'a' to set the automatic mode. The processes are sorted automatically
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If CPU > 70%, sort by process "CPU consumption"
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If MEM > 70%, sort by process "memory size"
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* 'b' switch between bit/s or byte/s for network IO
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* 'c' sort the processes list by CPU consumption
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* 'd' disable or enable the disk IO stats
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* 'e' enable the sensors module (PySensors lib is needed)
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* 'f' disable or enable the file system stats
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* 'l' disable or enable the logs
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* 'm' sort the processes list by process MEM
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* 'n' disable or enable the network interfaces stats
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* 'p' sort by process name
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* 'w' delete finished warning logs messages
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* 'x' delete finished warning and critical logs messages
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* '1' switch between global CPU and per core stats
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* 'q' Exit
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In server mode, you can set the bind address (-B ADDRESS) and listenning TCP port (-p PORT).
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In client mode, you can set the TCP port of the server (-p port).
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Default binding address is 0.0.0.0 (Glancess will listen on all the networks interfaces).
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TCP port is 61209.
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### Header
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The header shows the host name and the operating system name, version and architecture.
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### CPU
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Short view:
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Long view (only available if your terminal is wide enough)
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The CPU stats are shown as a percentage and for the configured refresh
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time. The total CPU usage is displayed on the first line.
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If horizontal space is available, per core CPU infomations are displayed.
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Color code used:
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If user|kernel|nice CPU is < 50%, then status is set to "OK".
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If user|kernel|nice CPU is > 50%, then status is set to "CAREFUL".
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If user|kernel|nice CPU is > 70%, then status is set to "WARNING".
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If user|kernel|nice CPU is > 90%, then status is set to "CRITICAL".
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### Load
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On the Nosheep blog, Zach defines average load: "In short it is the
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average sum of the number of processes waiting in the run-queue plus the
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number currently executing over 1, 5, and 15 minute time periods."
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Glances gets the number of CPU cores to adapt the alerts. With Glances,
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alerts on average load are only set on 5 and 15 mins. The first line
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also display the number of CPU core.
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If average load is < O.7*Core, then status is set to "OK".
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If average load is > O.7*Core, then status is set to "CAREFUL".
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If average load is > 1*Core, then status is set to "WARNING".
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If average load is > 5*Core, then status is set to "CRITICAL".
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### Memory
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Glances uses three columns: memory (RAM), "real" and swap.
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Real used memory is: used - cache.
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Real free memory is: free + cache.
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With Glances, alerts are only set for on used swap and real memory.
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If memory is < 50%, then status is set to "OK".
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If memory is > 50%, then status is set to "CAREFUL".
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If memory is > 70%, then status is set to "WARNING".
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If memory is > 90%, then status is set to "CRITICAL".
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### Network bit rate
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Glances display the network interface bit rate. The unit is adapted
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dynamicaly (bits per second, Kbits per second, Mbits per second...).
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Alerts are set only if the network interface maximum speed is available.
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If bit rate is < 50%, then status is set to "OK".
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If bit rate is > 50%, then status is set to "CAREFUL".
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If bit rate is > 70%, then status is set to "WARNING".
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If bit rate is > 90%, then status is set to "CRITICAL".
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For example, on a 100 Mbps Ethernet interface, the warning status is set
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if the bit rate is higher than 70 Mbps.
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### Sensors (optional)
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Optinaly, Glances displays the sensors informations (lm-sensors).
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You should enable this module using the following command line:
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glances -e
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There is no alert on this information.
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### Disk I/O
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Glances displays the disk I/O throughput. The unit is adapted dynamically
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(bytes per second, Kbytes per second, Mbytes per second...).
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There is no alert on this information.
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### Filesystem
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Glances displays the total and used filesytem disk space. The unit is
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adapted dynamically (bytes per second, Kbytes per second, Mbytes per
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second...).
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Alerts are set for used disk space:
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If disk used is < 50%, then status is set to "OK".
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If disk used is > 50%, then status is set to "CAREFUL".
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If disk used is > 70%, then status is set to "WARNING".
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If disk used is > 90%, then status is set to "CRITICAL".
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### Processes
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Short view:
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Long view (only available if your terminal is wide enough)
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Glances displays a summary and a list of processes.
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By default (or if you hit the 'a' key) the process list is automatically
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sorted by CPU of memory consumption.
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The number of processes in the list is adapted to the screen size.
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* VIRT: Virtual memory size (in byte)
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* REST: Amount of resident memory (in byte)
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* CPU%: % of CPU used by the process
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* MEM%: % of MEM used by the process
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* PID: Process ID
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* USER: Process user ID
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* NI: Nice level of the process
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* S: Process status
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R - Running
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D - Sleeping (may not be interrupted)
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S - Sleeping (may be interrupted)
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T - Traced or stopped
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Z - Zombie or "hung" process
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* IO_R and IO_W: Per process IO read and write
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* TIME+: Cumulative CPU time used
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* NAME: Process name or command line
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### Logs
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A logs list is displayed in the bottom of the screen if (and only if):
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* at least one WARNING or CRITICAL alert was occured.
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* space is available in the bottom of the console/terminal
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There is one line per alert with the following information:
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* start date
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* end date
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* alert name
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* (min/avg/max) values
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### Footer
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Glances displays the current time/date and access to the embedded help screen.
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If you have ran Glances in client mode (-c), you can also see if the client is connected to the server.
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If client is connected:
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else:
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On the left, you can easely seen if you are connected to a Glances server.
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## Localisation
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Glances localization files exist for:
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* English (default langage)
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* French
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* Spanish
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* Portugal
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Feel free to contribute !
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