linux monitor calibration

Tags: Linux grab tcpdump netstat view network status PS System State free memory usage Iostat disk performanceMonitoring IO Disk Performance命令如下：iostat -x 磁盘使用iotop 磁盘使用 %util look at the health of a hard drive, Installing Iotop[[emailprotected] ~]# yum install -y iotop Iotop command, mainly to see the io> column, see the performance of the disk Free to view memory usage概念：free命令可以查看当前系统的总内存大小以及使用内存的情况。字面意思：tota

Monitoring Linux Server disksServer disk performance testing is also a more interesting process. First of all, we need to figure out what's on disk, so here's a bird's-home dish.Not only do we have to figure out when the disk will be full, but also monitor the disk's read and write speed. Which is what we often call I/ODf-h//View disk usageIotop (this looks more intuitive)IostatNmonThe 22nd article has been

= ', '; if ($4 ~/^min/) {print $1,$5,$9$10$11} else {print $1,$4,$8$9$10}} ' >> ${log}/uptime.${dat}.cs V else echo "Hmmm-an unexpected error occured. Have the host type?Fi}If ["$HTYPE"! = "SunOS"-a "$HTYPE"! = "Linux"]Thenecho "Error-this script has no knowlege of the System $HTYPE"echo "You'll need to do some tweaking."ExitFiCase $ inRunGenstat;;csvIf [$#-lt 2]Thenecho "Error-you must supply a date in the form YYYYMMDD"ExitFiMkcsv;;*)Echo-e ":::: U

Recently encountered a project, front end with Apache HTTTPD for publishing (80 port), through the dual-machine load balancer forwarding to the back end of two tomcat processing (8081 and 8082 ports), now need to monitor the situation of these three ports, once down the need to be able to immediately alarm processing. Batch system monitoring is a good use of nagios software to achieve, such a small project to install a Nagios software, a bit cumbersom

{Command_name Process-host-perfdataCommand_line/usr/bin/perl/usr/libexec/pnp4nagios/process_perfdata.pl-d Hostperfdata} 4, modify the configuration file Templates.cfg Add the following content[Root@localhost objects]# Vim/etc/nagios/objects/templates.cfg Define host {Name Hosts-pnpRegister 0action_url/pnp4nagios/index.php/graph?host= $HOSTNAME $srv=_host_Process_perf_data 1}Define Service {Name Srv-pnpRegister 0action_url/pnp4nagios/index.php/graph?host= $HOSTNAME $srv= $SERVICEDESC $Process_

1.LINUX Zabbix Client Installation [Root@mongodb114 ~]# Mkdir/usr/local/zabbix [root@mongodb114 ~]# MV zabbix_agents_2.0.3.linux2_6.amd64.tar.gz/usr/local/zabbix/ [Root@mongodb114 ~]# cd/usr/local/zabbix/ [root@mongodb114 zabbix]# tar zxvf zabbix_agents_2.0.3.linux2_6.amd64.tar.gz [root@mongodb114 zabbix]# mkdir etc Find zabbix_agentd.conf Downloads on the server side/usr/local/zabbix/etc under Client [root@mongodb114 zabbix]# CD etc/ modifying config

# Licensed under the GNU GPL Version 2.# * Version 0.2 *****# TODO--Create CSV parsing rules for the netstat.# * * * * Configuration *****# set LOG to the dire Ctory want to write the performance data to.# set sleep to the number of seconds you want to SLEEP between samples# SE T HDD to the number of had disks in your machine. log=/home/mark/perfmon/livesleep=10hdd=2htype=$ (uname-s) Genstat () {now=$ (date +%s) while ["$now"-ne "+"] do sleep 1 n ow=$ (date +%s) done while:; Do dat=$ (date +%y%

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In order to achieve a highly available based on the Apache web site environment, in Apache for a variety of reasons automatically stop running, want to immediately restore site access, this requires a tool to monitor the operation of Apache real-time and can automatically restart the HTTPD service, on the Internet to find relevant information, Rewrite the following simple monitoring and restart script:Principle: Access to its own Apache service via th

kilobytesIo:BI: The number of blocks received from a block device, in units of blocksBo: The number of blocks sent to a block device, in units of blocksSystemIn: Number of interrupts per second, including clock interruptsCS: The number of environment (context) switches per secondCpu:Display as a percentage of total CPU timeUS: User CPU time, including nice times (non-kernel code executed)SY: System CPU Time (kernel code is executed)ID:CPU idle time, including i/o-wait timeWA:I/O wait time, incl

Tags: monitoring io performance FREE Command PS command View network status Linux under Grab BagMonitoring IO PerformanceIntroductionThe Iostat is primarily used to monitor the IO load on the system device, iostat the statistics from the start of the system startup when the first run, and then running Iostat displays statistics from the last time the command was run. Users can obtain the required statistics

Http://www.cnblogs.com/rossoneri/p/4068274.htmlThe first step is to run the Xrandr directly to see the next resolution situation.The second step, using the CVT command to generate a modeline, gets:1920x1080 59.96 Hz (CVT 2.07m9) hsync:67.16 kHz; pclk:173.00 MHzModeline "1920x1080_60.00" 173.00 1920x1080 2048 2248 2576 1083 1088 1120-hsync +vsyncStep three, edit/etc/gdm/init/default, not far from the beginning of the file (first few lines) to find/sbin/initctl-q Emit Login-session-start DISPLAY_M

I believe everyone is familiar with netstat command, this is the main use of this command. Online DDoS Deflate tool is the use of IP number to count the number of external connections, and then combined with iptables method to achieve an IP blacklist and unblock an IPNetstat-ntu | awk ' {print $} ' | Cut-d:-f1 | Sort | uniq-c | Sort-nthe commands used. There are obvious deficiencies, such as not inferring whether the local connection 127.0.0.1 or random address identifies the 0.0.0.0 or empty ca