3u chassis

:22COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAMEsshd 769 root 3u IPv6 2281738844 0t0 TCP *:ssh (LISTEN)sshd 769 root 4u IPv4 2281738846 0t0 TCP *:ssh (LISTEN) # lsof -i :3306COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAMEmysqld 11106 mysql 10u IPv4 2340975114 0t0 TCP *:mysql (LISTEN) 4. Only open files using IPv4 are listed. # lsof -i 4 - For IPv4 Example: # lsof -i 4COMMAN

One, the characteristics of large sites:1, the number of concurrent high, access to a large amount.2, the processing of data large (on 1 is bound to cause the following)3, the user is widely distributed, the network environment is complex.4, high stability.5, easy to expand.6, high security.Second, the infrastructure of large-scale websites1, Server Introduction1.1, Tower Server: The shape is similar to the ordinary PC, the size is relatively large. Features, multiple slots, strong extensibility

Parameters Description Product appearance The 3u rack-mounted chassis can accommodate up to 15 3.5 inch SAS hard disks; Disk and capacity Up to 15 1x3.5 inch SAS hot swapping hard drives with a speed of 3.0 Gbps and a speed of 10,000 or 15,000Rpm * Maximum capacity (per Cabinet) 4, 15,000 gb1, consisting of 15 gb1 rpm sas Hard Disks Raid level

binary FILE--from-dump file Read The DMI data from a binary FILE--no-sysfs do not attempt to read DMI data from SYSFS files--oem-string N only display the value of the given OEM string-V,--version Display the version and exitMore trusted information can be consulted: Http://man.linuxde.net/dmidecodeDmidecode parameter string and type list: (1) Valid string keywords Are:bios-vendor bios-version bios-release-date system-manufacturer System-product-name system-version system-serial-number system-u

Apache service monitoring script ----- automatically restart apache [root @ localhostshell] viapache_monitorsh! Binbashwhile [1] dowgethttp: 127001 ahtml gt; devnull2 gt; amp; 1if apache service monitoring script ----- automatically restart apache [root @ localhost shell] # vi apache_monitor.sh #! /Bin/bashwhile [1] do wget http://127.0.0.1/a.html >/Dev/null 2> 1 if [$? -Ne 0] then service apache restart>/dev/null 2> 1 else wt = 'cat a.html 'if [$ wt! = 'OK'] then service apache restart>/de

Use the scene: often we install their own module after the start to discover that a certain port is occupied, in order to ensure that their process can start normally, need to find out who occupied the port, and kill the process, and then start their own process, the specific methods of operation are as follows: The Linux platform uses the following : Using the lsof command, you can download the Lsof component under the CentOS platform through Yum install Lsof, and here is to see if Port 11,000t

Today we're going to talk about the basics, and the high-end mod is just a small crowd. DIY computer, simply put a bunch of hardware patchwork, composed of a complete host. And this, CPU, board card, memory, etc. are not too much of a problem. One is due to strict product specifications, the second is the product quantity is not high, the third is directly related to host performance, more attention. Mainly prone to problems or mechanical and electrical cooling products. 　　

processing functions are different. How can this problem be solved?2 solution 2.1 command mode to solve A reasonable solution for solving the above problems is the command mode. So what is the command mode?(1) command mode definitionEncapsulate a request as an object so that you can parameterize the customer with different requests, queue requests or record request logs, and support auditable operations. (2) Application Command mode to solve the problemFirst, let's look at the actual computer s

Reference Documentation: 1. Design mode-the basis of reusable object-oriented software 2.http://blog.csdn.net/cooldragon/article/details/52177273 (Visitor pattern Summary of Design patterns (visitor mode)) Visitor model of the theoretical knowledge, you can refer to the reference document; Case implementation, the case here is reference to document 1, the code in the book implementation of the case. The case is based on the composite model, the implementation of the visitor model Code implement

the memory slot (memory slot is also used to prevent the design, the opposite can not be inserted, you will be able to install the corresponding memory and slot on the gap), with two thumbs down at both ends of the memory slightly downward pressure, hear "snapped" after a sound, That means the memory is installed in place. Insert two identical memory in the same color memory slot, turn on dual channel function, improve system performance. So far, the CPU, memory installation process is compl

When assembling a new host, be sure to pay attention to the installation of various parts of the computer and matters. Here is a piece to learn how to assemble the computer to pay attention to what: First, motherboard installation in the installation process, some JS in order to save time and effort, often in the process of installing the motherboard only in the chassis fixed plate installed 4-5 socket base, and then directly installed on the moth

at the actual computer solution. First, draw a picture to describe how the actual computer handles the problem described above, as shown in 1: Figure 1 Computer Operations When the customer presses the button, the button itself does not know how to handle it. Therefore, the customer requests the motherboard through a connection line to allow the motherboard to truly start the machine.In order to describe the relationship between them, the motherboard is painted out of the

[Byeyear email:[email protected] Reprint please keep this trip]1. Static reactance DisturbanceIdeally, our system is a hollow and airtight metal box, according to the theory of electromagnetic field, the outside of any static power supply can not affect the inside of the box circuit operation. However, such a system is of little practical significance. An actual system must include an external interface (i.e., it is impossible to seal). An actual (metal-cased) system should be able to put the el

Computer chassis is an indispensable part of the computer, it plays a fixed, protect the role of various parts of the computer, in addition, the computer chassis with electromagnetic radiation shielding important role. Because the computer chassis has CPU, graphics cards, motherboards and other accessories to develop fast, so in the assembly of computers has not

Computer Cooling: A. Choose the coldest place in the room to place the computer. Conditions permitting, the lower the floor where the computer is placed (hot air rises). The computer has to be placed against the wall, and it chooses the wall of the east that rises to the sun. Do not place a large calorific value around the appliance. B. The specific positioning of the host, to choose the location conducive to air circulation. There is room on the top of the

socketking @ king-desktop :~ /Test/test1 $ netstat-a | grep tcp | head-n 1tcp 0 0 0 *: ssh *: * LISTENlsof list open files to list open file tools in the current system, it is generally used under the root permission. For example, check the process information of port 80: root @ king-desktop :~ # Lsof-I: 80 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAMEapache2 987 root 3u IPv4 4423 0t0 TCP *: www (LISTEN) apache2 3899 www-data

hard drive is the most afraid of vibration, light affects data security, the entire hard drive reimbursement. Therefore, you are not recommended to use this hard drive fan. low price and quality hard drive fan is not How should we give the hard disk heat? The most basic, do not and other accessories such as floppy drive too close; If you're a friend of a new machine, it is highly recommended to buy a chassis with a fan seat in front of the hard d

1, the fatal weakness--vibration Hard disk is a mechanical product, vibration can be said to be a hard enemy, hard disk internal structure is quite sophisticated, the head from thousands of rpm per minute of the surface of the disc only a few microns high, once the vibration is stronger then there will be read and write anomalies or even caused the disk or magnetic head physical damage, the consequences are quite serious. Hard disk reading and writing is forbidden to move: In fact, the hard di

] # lsof-I: 80 [root @ RHEL httpd-2.2.16] # lsof-I: 80 COMMAND PID USER FD TYPE DEVICE SIZE NODE NAMEhttpd 14125 root 3u IPv6 194322 TCP *: http (LISTEN) httpd 14354 apache 3u IPv6 194322 TCP *: http (LISTEN) httpd 14355 apache 3u IPv6 194322 TCP *: http (LISTEN) httpd 14356 apache 3u IPv6 194322 TCP *: http (LISTEN) h

Xena,xena Networks Company's network tester, can also cover the Ethernet L2~L7 layer tester, but the function is simple, the interface is very concise, use it more intuitive and convenient.Automated test scenarios for 1.XenaTest the at frame on the PC-->TCL Drive Library SIG_TEQ_XENA.TCL-----(Ethernet cable)----->xena ChassisPC on the Xena not install the client Xenamanager can. Xena's chassis internal command is not a TCL-formatted command, but a Xen