linux monitor calibration

Logwatch, as its name implies, is a software that monitors Linux log Files. After installation, you can send the host log analysis file to the specified mailbox every day. Why? This saves the time and energy for administrators to manually view logs. And can receive logs accurately every day (or even more frequently. In this way, you can understand the security of your servers. The following installation method applies to all RPM

In linux, tcpdump is used to monitor network traffic, and exported files are obtained to wireshark in windows to analyze the command lines in linux: tcpdump-I eth1-s 0 host 10.12.129.3-w output.txt-I indicates listening on eth1. The default value is eth0,This is not specified at the beginning, and the traffic of a certain machine cannot be monitored. -S indicates

percentage], 0.0 wa[Wait for the input output CPU time percentage], 0.0 hi[hardware IRQ----hardware interrupt], 0.0th[steal time----live], mem:8175352total[Total physical Memory], Total amount of physical memory used by 7533128used[], 642224 free[total free memory], 282572 buffers[as the amount of memory for the kernel cache] swap:0 total[swap Area total], 0 Total swap area used by used[], 0 free[Total free swap area], 818568 cached[buffer swap area T

Use iostat in Linux to monitor the I/O status. We can use sar (1), pidstat (1), mpstat (1), vmstat (8) for monitoring.I. Installation yum install sysstatIi. Parameter explanation FILES /proc/stat contains system statistics./proc/uptime contains system uptime./proc/partitions contains disk statistics (for pre 2.5 kernels that have been patched)./proc/diskstats contains disks statistics (for post 2.5 kernels)

current capacityPercentage of current capacity used by O:old generationPercentage of current capacity used by P:perm generationS0CMX: Maximum Capacity (bytes) of the first Survivor (Survivor area) in the young generationS1CMX: Maximum capacity of the second survivor (Survivor area) in the younger generation (bytes)ECMX: Maximum capacity of Eden (Eden) in the Young Generation (bytes)DSS: Capacity (bytes) currently required for Survivor (surviving area) (Eden area Full)TT: Limited number of holds

What is continuous integration: http://www.ruanyifeng.com/blog/2015/09/continuous-integration.htmlBenefits of Continuous Integration: Https://zhuanlan.zhihu.com/p/20589465?columnSlug=jishuqushiI have been before the company are entrepreneurial companies, there is no complete development process, the basic is all by hand to submit the release, small companies do not have professional operations, project management is based on manual, sometimes near the release of the bug, the project manager can

#input the network name if [-N "]; Then Eth_name=$1else eth_name= "eth0" fi send_o= ' ifconfig $eth _name | grep bytes | awk ' {print $6} ' | Awk-f: ' {print $} ' recv_o= ' ifconfig $eth _name | grep bytes | awk ' {print $} ' | Awk-f: ' {print $} ' send_n= $send _orecv_n= $recv _o i=0while [$i-le 100000]; Do send_l= $send _n recv_l= $recv _n sleep 2 send_n= ' ifconfig $eth _name | grep bytes | awk ' {print $6} ' | Awk-f: ' {print $} ' recv_n= ' ifconfig $eth _name | grep bytes | awk ' {print $}

1.LINUX under Zabbix Client Installation[Email protected] ~]# Mkdir/usr/local/zabbix[Email protected] ~]# MV zabbix_agents_2.0.3.linux2_6.amd64.tar.gz/usr/local/zabbix/[Email protected] ~]# cd/usr/local/zabbix/[Email protected] zabbix]# tar zxvf zabbix_agents_2.0.3.linux2_6.amd64.tar.gz[Email protected] zabbix]# mkdir etcfound on the service side zabbix_agentd.conf The download is placed on the client /usr/local/zabbix/etc under[Email protected] zabbi

I looked at the/proc/net/dev under Linux to record the number of packets and bytes sent and received by each network card. So initiation thought, wrote one. Operation Effect: Copy Code code as follows: [root@74-82-173-217 ~]#./net.sh Current Ip:inet addr:74.82.173.217 bcast:74.82.173.223 mask:255.255.255.224 Summry info:rx bytes:203692709 (194.2 MiB) TX bytes:93525930 (89.1 MiB) Eth0 Receive bytes:573 Packets:3 Eth0 Send bytes

LoadRunner How to monitor system resources under LinuxA period of time in the study LoadRunner process, in the stress scene test through the LoadRunner to real-time monitoring of Windows system resources, in the previous sections I have summed up the relevant process, in recent times found a group of friends asked how to monitor the Linux system resources, So I a

Recently, there is a project to delete the Nginx service generated cache files, because it is not very understanding of the Nginx cache generation strategy, on the internet did not look closely, after discussion, eventually want to introduce the Liunx inotify function, monitoring a liunx directory of various events ( Create,delete,access, etc.). To find out more about INotify's friends, please refer to the following two posts: 1. http://www.ibm.com/developerworks/cn/

When we use LR for performance testing, we often have a need to monitor the OS's resource usage. For Windows system, this work is very convenient, directly in the LR Resource Monitoring window to add the need to be monitored by the machine name or IP, but for the Linux/unix system, it is slightly more complicated, I am here to briefly describe how to monitor the

application. You can also prevent your system files from being modified, which you don't yet know. For example: Login back door, process hidden ... You also need to be able to notify your phone in a timely manner. And you don't have to stare at the monitor all the time. Use Description: This system is used to monitor and manage your Linux server on the wind

Label:Using shell scripts to monitor and manage Oracle databases will greatly simplify the workload of DBAs, such as common monitoring of instances, monitoring of monitors, monitoring of alarm logs, backup of databases, automatic mailing of AWR report, etc. This article gives an example of using shell scripts to monitor Oracle instances under Linux. Reference for

Conky is a System Monitor written in the ' C ' language and released under the GNU GPL and the BSD license agreement, which is available in both Linux and BSD operating systems. This application is based on the X-Windows system, which originally came from the Torsmo branch. Characteristics A concise user interface; Highly configurable; It can use a built-in part (more than 300) or use an external script

Nmon file, which will generate a parsed result file: Hostname_090824_1306.nmon.xls, open the generated file with Excel to see the results 。If the macro does not run, the following actions are required:Tools, macro-and security, and then open the file and allow the macro to run.The following is the Nmon report generated in the test environment:The red area is the analysis report for different indicators.3). automatically collect data by day:Add a record to the crontab:0 0 * * * root nmon-s300-c2

with Excel to see the results 。If the macro does not run, the following actions are required:Tools, macro-and security, and then open the file and allow the macro to run.The following is the Nmon report generated in the test environment:The red area is the analysis report for different indicators.3). automatically collect data by day:Add a record to the crontab:0 0 * * * root nmon-s300-c288-f-m/home/>/dev/null 2>1300*288=86400 seconds, just a day's data.Reference Articles :Nmon Performance: Fre

Tags: visual body JVM temp A comparison setting LVM Java_homeUsing VISUALVM to remotely monitor Linux server JVM One, JMX mode: 1. The first thing to do is to modify the configuration file for the JMX service in the JDK to get the appropriate permissions:Enter the/jre/lib/management subdirectory of the root directory where the $java_home resides,A. Copy the Jmxremote.password.template file as a Jmxremote.pa

Since there is a firewall enabled when adding a Linux host, there are two ways to troubleshoot Linux hosts because of the inability to monitor Linux hosts:This command can be executed by the monitoring host: Snmpwalk-c public-v 2c 192.168.100.244 indicates the ability to receive data information from the monitored mach

has been using Jconsole to monitor the JVM, the graphical interface is easy to use, recently because the need to operate under the pure Linux, so summed up the Linux monitoring JVM under the example, this time the main use of the Jstat tool,The meaning of each parameter:Jstat-class PID: Displays the number of loaded classes, and the amount of space that is occupi