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https://github.com/nicolargo/glances.git
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253 lines
6.9 KiB
Markdown
253 lines
6.9 KiB
Markdown
[](https://flattr.com/submit/auto?user_id=nicolargo&url=https://github.com/nicolargo/glances&title=Glances&language=&tags=github&category=software)
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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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## Installation
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### From package manager (very easy way)
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Packages exist for Arch, Fedora, Redhat, Ubuntu (with PPA), FreeBSD...
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### From PyPi (easy 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 exemple on Debian/Ubuntu:
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$ sudo apt-get install python-pip
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Then install the latest Glances version:
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$ sudo pip install glances
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### From source
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Get the latest version:
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$ wget https://github.com/downloads/nicolargo/glances/glances-1.4.tar.gz
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Glances use a standard GNU style installer:
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$ tar zxvf glances-1.4.tar.gz
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$ cd glances-1.4
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$ ./configure
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$ make
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$ sudo make install
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Pre-requisites:
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* Python 2.6+ (not tested with Python 3+)
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* psutil 0.4.1+ (did NOT work with psutil < 0.2 )
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Notes: For Debian and Ubuntu < 12.04
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The officials repos only include the psutil version 0.2.1.
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You had to install the version 0.4.1 using the following commands:
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$ sudo apt-get install python-dev python-pip
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$ sudo pip install psutil
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## Running
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Easy:
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$ glances.py
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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 exemple to set the refrech rate to 5 seconds:
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$ glances.py -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 an help message whith 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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* 'c' to sort the processes list by CPU consumption
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* 'd' Disable or enable the disk IO stats
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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' to sort the processes list by process size
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* 'n' Disable or enable the network interfaces stats
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* 'q' Exit
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### Header
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The header shows the Glances version, the host name and the operating
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system name, version and architecture.
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### CPU
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The CPU states are shown as a percentage and for the configured refresh
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time.
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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 the 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.
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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 tree columns: memory (RAM), swap and "real".
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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 bitrate is < 50%, then status is set to "OK".
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If bitrate is > 50%, then status is set to "CAREFUL".
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If bitrate is > 70%, then status is set to "WARNING".
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If bitrate is > 90%, then status is set to "CRITICAL".
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For exemple, 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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### Disk I/O
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Glances display the disk I/O throughput. The unit is adapted dynamicaly
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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 display the total and used filesytem disk space. The unit is
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adapted dynamicaly (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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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 automaticaly
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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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### Logs
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A logs list is displayed in the bottom of the screen if (an 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 a caption and the current time/date.
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## Localisation
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To generate french locale execute as root or sudo :
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i18n_francais_generate.sh
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To generate spanish locale execute as root or sudo :
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i18n_espanol_generate.sh
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## Todo
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You are welcome to contribute to this software.
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* Packaging for Debian, Ubuntu, BSD...
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* Check the needed Python library in the configure.ac
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* Add file system stats when the python-statgrab is corrected
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