mirror of https://github.com/nicolargo/glances
Update documentation for release 2.0
Nicolargo
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@ -16,9 +16,11 @@ Introduction
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Glances is a cross-platform curses-based monitoring tool which aims to
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present a maximum of information in a minimum of space, ideally to fit
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in a classical 80x24 terminal or higher to have additional information.
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Glances can adapt dynamically the displayed information depending on the
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terminal size. It can also work in a client/server mode for remote monitoring.
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terminal size.
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Glances can also work in a client/server mode. Remote monitoring could be
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done via terminal or Web interface.
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Glances is written in Python and uses the `psutil`_ library to get information from your system.
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@ -30,6 +32,10 @@ Full view (>80x24)
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.. image:: images/screenshot-wide.png
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Web interface (Firefox)
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.. image:: images/screenshot-web.png
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Usage
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=====
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@ -63,21 +69,36 @@ In server mode, you can set the bind address ``-B ADDRESS`` and listening TCP po
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In client mode, you can set the TCP port of the server ``-p PORT``.
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You can also set a password to access to the server ``--password``.
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Default binding address is ``0.0.0.0`` (Glances will listen on all the network interfaces) and TCP port is ``61209``.
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In client/server mode, limits are set by the server side.
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You can also set a password to access to the server ``--password``.
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Glances is ``IPv6`` compatible. Just use the ``-B ::`` option to bind to all IPv6 addresses.
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If Glances server is not detected by the client, this last one try to grab stats using the SNMP protocol:
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As an experimental feature, if Glances server is not detected by the client, this last one try to grab stats using the SNMP protocol:
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.. code-block:: console
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client$ glances -c @snmpserver
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Known limitation: Grab using SNMP is only validated for GNU/Linux operating system.
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Known limitation: Grab using SNMP is only validated for GNU/Linux operating system with SNMP v2/2c server.
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Web Server mode
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----------------
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If you want to remotely monitor a machine, called ``server``, from any device with a Web Browser (called ``client``), just run on the server:
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.. code-block:: console
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server$ glances -w
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and on the client, enter the following URL in your favorite Web Browser:
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http:\\@server:61208\
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where ``@server`` is the IP address or hostname of the server.
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Command reference
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=================
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@ -86,7 +107,7 @@ Command-line options
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--------------------
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-h, --help show this help message and exit
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--version show program's version number and exit
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-V, --version show program's version number and exit
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-b, --byte display network rate in byte per second
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-B BIND_ADDRESS, --bind BIND_ADDRESS
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bind server to the given IPv4/IPv6 address or hostname
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@ -172,6 +193,8 @@ The following commands (key pressed) are supported while in Glances:
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Configuration
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=============
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**Caution: be aware that the Glances version 1.x configurations files are not comaptible with the version 2.x.**
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No configuration file is mandatory to use Glances.
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Furthermore a configuration file is needed for setup limits, disks or network interfaces to hide and/or monitored processes list.
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@ -217,6 +240,8 @@ Legend
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| ``MAGENTA`` stat counter is ``"WARNING"``
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| ``RED`` stat counter is ``"CRITICAL"``
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Note: Only stats with colored background will be logged in the alert view.
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Header
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------
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@ -225,7 +250,14 @@ Header
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The header shows the hostname, OS name, release version, platform architecture and system uptime (on the upper right).
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Additionnaly, on GNU/Linux operating system, it shows also the kernel version.
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In client mode, the server connection status is displayed (Connected or Disconnected)
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In client mode, the server connection status is displayed:
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Connected:
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.. image:: images/connected.png
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Disconnected:
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.. image:: images/disconnected.png
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CPU
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---
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@ -252,7 +284,7 @@ The total CPU usage is displayed on the first line.
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| If user|system|iowait CPU is ``>70%``, then status is set to ``"WARNING"``
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| If user|system|iowait CPU is ``>90%``, then status is set to ``"CRITICAL"``
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*Note*: limit values can be overwritten in the configuration file under the ``[cpu]`` section.
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*Note*: limit values can be overwritten in the configuration file under the ``[cpu]`` or/and ``[percpu]`` sections.
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Load
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----
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@ -294,7 +326,7 @@ With Glances, alerts are only set for used memory and swap.
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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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*Note*: limit values can be overwritten in the configuration file under the ``[memory]`` and ``[swap]`` sections.
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*Note*: limit values can be overwritten in the configuration file under the ``[memory]`` and ``[memswap]`` sections.
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Network
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-------
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@ -304,34 +336,9 @@ Network
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Glances displays the network interface bit rate. The unit is adapted
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dynamically (bits per second, kbits per second, Mbits per second, etc).
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Alerts are only set if the network interface maximum speed is available.
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Alerts are only set if the network interface maximum speed is available (see sample in the configuration file).
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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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| 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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*Note*: In the configuration file, you can define a list of network interfaces to hide.
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Sensors
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-------
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Glances can displays the sensors information trough `lm-sensors` (only available on GNU/Linux).
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As of lm-sensors, a filter is processed in order to display temperature only:
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.. image:: images/sensors.png
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Glances can also grab hard disk temperature through the `hddtemp` daemon (see here [2]_ to install hddtemp on your system):
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.. image:: images/hddtemp.png
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There is no alert on this information.
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*Note*: limit values can be overwritten in the configuration file under the ``[temperature]`` and ``[hddtemperature]`` sections.
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*Note*: In the `[network]`` section of the configuration file, you can define a list of network interfaces to hide and per interface limits value.
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Disk I/O
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--------
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@ -361,6 +368,23 @@ Alerts are set for used disk space:
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*Note*: limit values can be overwritten in the configuration file under ``[filesystem]`` section.
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Sensors
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-------
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Glances can displays the sensors information trough `lm-sensors` (only available on GNU/Linux), HDDTemp and BatInfo.
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As of lm-sensors, a filter is processed in order to display temperature only:
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.. image:: images/sensors.png
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Glances can also grab hard disk temperature through the `hddtemp` daemon (see here [2]_ to install hddtemp on your system):
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.. image:: images/hddtemp.png
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There is no alert on this information.
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*Note*: limit values can be overwritten in the configuration file under the ``[sensors]`` section.
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Processes list
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--------------
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@ -375,7 +399,7 @@ Full view:
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Three views are available for processes:
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* Processes summary
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* Optional monitored processes list
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* Optional monitored processes list (see bellow)
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* Processes list
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The processes summary line display:
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@ -385,6 +409,7 @@ The processes summary line display:
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* Running tasks number
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* Sleeping tasks number
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* Other tasks number (not running or sleeping)
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* Sort key
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By default, or if you hit the ``a`` key, the processes list is automatically
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sorted by:
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@ -411,7 +436,7 @@ The number of processes in the list is adapted to the screen size.
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``NI``
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Nice level of the process
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``S``
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Process status (see details bellow)
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Process status (see details bellow) (running process is highlighted)
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``TIME+``
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Cumulative CPU time used
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``IOR/s``
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@ -419,7 +444,7 @@ The number of processes in the list is adapted to the screen size.
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``IOW/s``
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Per process IO write rate (in Byte/s)
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``COMMAND``
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Process command line
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Process command line (process name is highlighted)
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Process Status legend:
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@ -434,7 +459,7 @@ Process Status legend:
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``Z``
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Zombie
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*Note*: limit values can be overwritten in the configuration file under the ``[process]`` section.
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*Note*: limits values can be overwritten in the configuration file under the ``[process]`` section.
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Monitored processes list
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------------------------
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@ -502,7 +527,7 @@ A log messages list is displayed in the bottom of the screen if (and only if):
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Each alert message displays the following information:
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1. start date
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2. end date
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2. duration if alert is terminated or ongoing if the alert is on going
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3. alert name
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4. {min/avg/max} values or number of running processes for monitored processes list alerts
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@ -511,7 +536,7 @@ API documentation
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Glances uses a `XML-RPC server`_ and can be used by another client software.
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API documentation is available at https://github.com/nicolargo/glances/wiki/The-Glances-API-How-To
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API documentation is available at https://github.com/nicolargo/glances/wiki/The-Glances-2.x-API-How-to
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Others outputs
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==============
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@ -522,7 +547,7 @@ It is possible to export statistics to CSV file.
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$ glances --output-csv /tmp/glances.csv
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CSV files have two lines per stat:
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CSV files have two lines per stats:
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- Stats description
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- Stats (comma separated)
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