Use glances on Linux

Use glances on linuxtable of Contents

• 1. Why use Glances
• 2. Install
  • 2.1. Install on Ubuntu
  • 2.2. Install on Centos
  • 2.3. Watch version
• 3. Statistical indicators
  • 3.1. CPU
    • 3.1.1. Indicators
    • 3.1.2. Warning
    • 3.1.3. switch
  • 3.2. Load
    • 3.2.1. Definition
    • 3.2.2. Warning
  • 3.3. Mem
  • 3.4. Swap
  • 3.5. Network
  • 3.6. Disk
  • 3.7. File system
  • 3.8. Process
    • 3.8.1. Indicators
    • 3.8.2. Switch
• 4. Export
  • 4.1. To CSV file
• 5. Referer

1Why use Glances

It cannot replace long-term monitoring system. But it's a useful tool to help us find the most important information ASAP.

2Install2.1Install on Ubuntu

sudo apt-get install glances

2.2Install on Centos

Yum Install glances

If the vesion of glances installed by Yum are too low, you could use this-to install newest.

Curl-l Http://bit.ly/glances | /bin/bash

2.3Watch version

Glances--versionglances v2.3 with Psutil v2.2.1

3Statistical indicators3.1Cpu3.1.1Indicators

Table 1: CPU Indicators

indicator	Description
User
System
Idle
Nice
Irq
Iowait
Steal

3.1.2Warning

If the User|system CPU is <50% and then the status is set to "OK" if the User|system CPU is >50% and then the status is the set to "careful" if User|system CPU is >70% and then status is set to "WARNING" If User|system CPU is >90% and then status is set to "CRITICAL"

3.1.3Switch

To switch to PER-CPU stats, just hits the 1 key

3.2Load3.2.1Definition

On the No Sheep blog, Zachary Tirrell defines the load average: "In short it is the average sum of the number of processes Waiting in the Run-queue plus the number currently executing over 1, 5, and minutes time periods. "

3.2.2Warning

Glances gets the number of CPU core to adapt the alerts. Alerts on load average is only set on minutes time period. The first line also displays the number of CPU core. If load average is <0.7*core and then status is set to "OK" if the load average is >0.7*core and then the status is set to "careful "If load average is >1*core and then status is set to" WARNING "if the load average is >5*core and then status was set to" Criti CAL "Note:limit values can be overwritten in the configuration file under the [Load] section.

3.3Mem3.4Swap3.5Network3.6Disk3.7File system3.8Process3.8.1Indicators

CPU%    % of CPU used by the process If IRIX mode is off (aka Solaris mode), the value was divided by logical core Numberm em%    % of MEM used by the Processvirt total program    size-virtual Memory size (VMS) RES    resident Set size (RSS) PID    process Iduser User Idni Nice level of the    process (niceness and than 0 is highlighted) S    process STA Tus (Running process is highlighted) time+    cumulative CPU time usedior/s    Per process I/O read rate (in byte/s) iow/ s    Per process I/O write rate (in byte/s) command    process command line User cans switch to the process name by pre Ssing on The/key

3.8.2Switch

1. A key
   

   By default, or if you hit the A key, the processes list is automatically sorted by:    CPU If there is no alert (default Behavior)    CPU if a CPU or LOAD alert is detected    MEM if a memory alert is detected    Disk I/o if a CPU iowait al ERT is detected

2. Enter
   

   Hit enter key, then fill in process filter pattern, e.g. fill in nginx, only nginx process is shown

4Export4.1to CSV file

Use Argument–export-csv

Glances--export-csv A.csv

5Referer

Official documentation

Author:dean Chen

CREATED:2016-02-02 two 10:37

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Use glances on Linux