linux snmp monitoring tool

to limited time, in the latter several blog, will detail the real-time priority process, static priority process.Introduced a half-day, process and thread, mainly to introduce two system monitoring tools and a process viewing tool.1, real-time system monitoring Tool Dstat,1DSTAT[-AFV] [options:] [Delay [Count]]-A: Dis

. Number of Lookup requests 20 IP (commonly used to find the source of attack) Netstat-anlp|grep 80|grep Tcp|awk ' {print $} ' |awk-f: ' {print '} ' |sort|uniq-c|sort-nr|head-n203. Use tcpdump to sniff 80 ports with the highest number of IPTcpdump-i ETH0-TNN DST Port 80-c 1000 | Awk-f "." ' {print $1″. ' $2″. " $3″. " $4} ' | Sort | uniq-c | Sort-nr |head-104. Find more time_wait connectionsNetstat-n|grep Time_wait|awk ' {print $} ' |sort|uniq-c|sort-rn|head-n105. Check for more SYN connections

First, Nmon is a very good UNIX, Linux under the system performance monitoring tools. Quoted by Baidu know: The Nmon tool helps to display all of the important performance optimization information on one screen and dynamically updates it. This efficient tool can work on any dumb screen, Telnet s

about 10.5, and every 3 seconds disk reads about 62KB, writes about: 110KB, this value is not an accurate value, why? Know why? Because of the time period problemThe best test is to find the average number of times or use the method to find the current valueAs shown below:650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/6B/86/wKiom1Uvfk2jn_KzAAC-70HOJzU414.jpg "title=" 6.png " alt= "Wkiom1uvfk2jn_kzaac-70hojzu414.jpg"/>There are many more detailed extensions for Iostat, with the-X opt

Download the Nmon for the system versionHttp://nmon.sourceforge.net/pmwiki.php?n=Site.Download Wiki-nmonHttps://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/Power%20Systems/page/nmon Decompression Run Gzip nmon**.tar.gz CD nmon** ./nmon* View running Status Online command and parameter description Nmon-s 10-c 60-f-m/root/ -S 10: Collect data every 10 seconds -C 60: Acquisition of 60 times, that is, 10 minutes of data acquisition

agent.Therefore, in the above configuration, only "Jiankongbao" is required to be modified by you, while adding the server on the monitoring treasure, you need to provide this string.V3Of course, we recommend that you use the V3 version for authentication. For some earlier versions of Linux distributions, the built-in SNMP agent may not support V3, so we recomme

Htop is a very advanced interactive real-time Linux process monitoring tool. It is very similar to the top command, but it has richer features such as user-friendly management of processes, shortcut keys, vertical and horizontal display of processes, and so on. Htop is a third-party tool that is not included in a

: ################################################################################ disk checks## The agent can check the amount of available disk space, and make# sure it is above a set limit. # disk PATH [MIN=100000]## PATH: mount path to the disk in question.# MIN: Disks with space below this value will have the Mib's errorFlag set.# Default value = 100000.# Check the / partition and make sure it contains at least 10 megs.#disk / 10000Set # Disk/10000 Remove the # Before and cance

################################################################################ Disk checks## the agent can check The amount of available disk space, and make# sure it is above a set limit. # disk path [min=100000]## path: mount path to the disk in question.# MIN: Disks with space below this value would The Mib ' s errorflag set.# Default value = 100000.# Check the/partition and make sure it contains at least me GS. #disk/10000Will#disk/10000Before the # number is removed, uncomment6

: Displaying commonly used TCP statistics –UDP: Displays some dynamic data for the monitored UDP interface and its current usage More than that, of course, Dstat comes with a few plugins that extend its functionality to a great extent. You can view some of their usage by looking at the/usr/share/dstat directory, which are commonly used: -–disk-util: Displays the busy state of a time disk -–freespace: Displays the current disk space utilization -–proc-count: Shows the number of program

the monitored UDP interface and its current usage More than that, of course, Dstat comes with a few plugins that extend its functionality to a great extent. You can view some of their usage by looking at the/usr/share/dstat directory, which are commonly used: -–disk-util: Displays the busy state of a time disk -–freespace: Displays the current disk space utilization -–proc-count: Shows the number of programs that are running -–top-bio: Indicates the maximum block I/O p

: Displaying network statistics –TCP: Displaying commonly used TCP statistics –UDP: Displays some dynamic data for the monitored UDP interface and its current usage More than that, of course, Dstat comes with a few plugins that extend its functionality to a great extent. You can view some of their usage by looking at the/usr/share/dstat directory, which are commonly used: -–disk-util: Displays the busy state of a time disk -–freespace: Displays the current disk space ut

As a monitoring tool for Linux systems, download the software packages suitable for your system on the official website. Official website address: http://nmon.sourceforge.net/pmwiki.php? N = site. Download Download the file and FTP it to the Linux host to create a directory named nmon. Set the location. But it is be

Nmon Download: Http://pan.baidu.com/s/1jICoSpoIt can be run directly under Linux.The Nmon tool helps to display all of the important performance optimization information on one screen and dynamically updates it.The Nmon tool provides AIX and Linux performance experts with the ability to monitor and analyze performance data, including: CPU usage Memor