What are the Linux management tools?

Linux management tools include: 1. htop, a monitoring and process management software; 2. dstat, a system resource statistics generation tool that can collect network, hard disk, CPU and other system resources; 3. Glances, a cross-platform Platform system monitoring tools; 4. iftop, real-time traffic monitoring tool; 5. nethogs, etc.

#The operating environment of this tutorial: linux5.9.8 system, Dell G3 computer.

linux system management---some useful open source tools

htop

htop is a tool that runs on Linux The monitoring and process management software on the system replaces the traditional UNIX top. The installation command is as follows:

# yum install htop

Usage of htop:

# htop

You can get help through F1 to learn its details.

dstat

dstat is a system resource statistics generation tool implemented in Python language. It can basically replace vmstat, iostat, netstat and ifstat tools. Collect network, hard disk, CPU and other system resources. The installation command is as follows:

# yum install dstat

dstat uses display

[root@web ~]# dstat -cdng

• -c to represent CPU usage information. idl represents idle idle resources, wai represents waiting for the response of the I/O device, usr is the user process occupancy, sys is the system Process usage.
• -d represents disk read and write operations.
• -n represents the network sending and receiving data packets.
• -g indicates the paging (page) situation. A larger page means that a large amount of swap space is used.

Other parameters used:

[root@web ~]# dstat -lym
---load-avg--- ---system-- ------memory-usage-----
 1m   5m  15m | www.hongyangpt.cn int   csw | used  buff  cach  free
0.40 0.47 0.35| www.zhuyngyule.cn 456   255 |5298M  388M 9867M  526M
0.37 0.46 0.35| www.yinmao2zhuce.cn 320   165 |5298M  388M 9867M  526M
0.37 0.46 0.35| www.feiyuptzc.cn 148   158 |5298M  388M 9867M  525M
0.37 0.46 0.35|  www.tianjiptzc.cn 95   135 |5298M  388M 9867M  526M

Among them: int represents interrupt, csw represents context switch. Generally speaking, the larger the value This shows that process switching and interruption are frequent, which may cause certain congestion.

Find out the processes and users with the highest cpu, memory, io usage:

[root@web ~]# dstat -www.yunsheng-pt.com-proc-count --top-cpu --top-mem --top-io
proc -most-expensive- --most-expensive- ----most-expensive----
tota|  cpu process   | www.yasenyulee.cn   memory process |     i/o process      
 377|java         0.0|www.lecaixuanzc.cn java        4513M|init         33k   33k
 377|ManagementAge0.1|www.baihuayl7.cn  java        4513M|zabbix_agen2296B    0 
 377|node_exporter0.3|www.yuanyangyul.com java        4513M|node_export  22k 9788B
 377|java         7.6|www.feishenbo.cn java        4506M|zabbix_agen2296B    0 
 377|java         6.2|java        4506M|zabbix_agen2296B    0 
 377|java         1.1|java        4501M|zabbix_agen2296B    0 
 377|java         0.1|java        4501M|zabbix_agen2296B    0 
 377|java         0.7|java        4501M|nginx: work  33k   38k

Glances

Glances is a cross-platform local psutil System monitoring tools.

Installation command:

yum install glances

Startup:

• Stand-alone startup:

glances

Effect presentation:

• web startup:

glances -w

To start the web, you need to install the bottle package.

iftop

iftop is a real-time traffic monitoring tool similar to the top command

Installation command:

# yum install -y iftop

Use:

iftop

Among them:

• TX: Send traffic
• RX: Receive traffic
• TOTAL:Total traffic
• Cumm: The total traffic from running iftop to the current time
• peak: Peak traffic
• rates: Represents the average traffic in the past 2s 10s 40s respectively

nethogs

nethogs Check the bandwidth usage occupied by the process:

# yum install -y nethogs

Use:

# nethogs eth0

iotop

iotop is similar Use the top command to view the processes occupying hard disk I/O Installation command:

yum install iotop

Use:

iotop

phpSysInfo

phpSysInfo is a system resource inspection system written entirely in PHP device. As long as you have a browser, you can view various resource information of UNIX-compatible systems such as Linux, FreeBSD, OpenBSD, NetBSD, etc., which is very convenient.

webPM

webPM is a web-based version control system. The core part is written in PHP language, and the background requires MySQL support. Some functions require a CGI module written in Perl language.

Webmin: GUI management tool on Unix

Webmin is a tool that uses a browser to manage the system. With it, you don't need to know complicated command lines or various complicated configuration files, and system management becomes very simple! You can set up accounts, configure DNS and file sharing, and more.

Mrtg(Multi Router Traffic Grapher,MRTG)

Mrtg is a tool software that monitors network link traffic load. It uses the snmp protocol Obtain the device's traffic information from the device and display the traffic load to the user in the form of an HTML document containing graphics in PNG format, displaying the traffic load in a very intuitive form

Saint/Satan

The Satan tool is used to detect network security problems, and it comes from its bad aspects. Although Satan can help system administrators secure their networks, attackers can also use it to cause damage.

Related recommendations: "Linux Video Tutorial"

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