small footprint linux server

Create a DNS server on Linux-Linux Enterprise Application-Linux server application information. For more information, see. I. Assumptions Many DNS articles start with the DNS principle. From the perspective of my use, I will provide some simple and practical application inst

. This tool is called the Time-domain reflection meter (time domain REFLECTOMETER,TDR). TDR measures the propagation and variation of electromagnetic waves. Connecting a TDR to a network can detect unauthorized devices that obtain network data. But many small and medium-sized companies do not have this expensive tool. The best way to protect against sniffer attacks is to: 1, the Linux

Top 1 o'clock, see if each CPU is balanced, see if the usage distribution of each CPU is reasonable See load average (average of 1 minutes, 5 minutes, 15 minutes ago to present) Look at the use of memory See number of processes running, sleep M look at the memory footprint of each process Iostat-x 1Look at the CPU iowait and idle.The key is r/s,w/s per second read and write frequency and volumeAverage data size and Io Que

Tags: ROM data test Rules collection notebook SEM disk read-write providerA Linux server Performance View 1.1 CPU Performance View 1, view the number of physical CPUs:cat /proc/cpuinfo |grep "physical id"|sort|uniq|wc -l2. View the number of cores in each physical CPU:cat /proc/cpuinfo |grep "cpu cores"|wc -l3, the number of logical CPUs:cat /proc/cpuinfo |grep "processor"|wc -lNumber of physical CPUs * Num

optimal state. The data in the database is the most important, these databases if lost, the loss is huge, so you need to regularly back up the database, just in case. Server maintenance Software Maintenance 4, user data After frequent use, the server may store a large amount of data. This data is a very valuable resource, so it needs to be sorted out and engraved into a permanent storage, even if the

Introduction to the 20 commonly used server software in Linux-Linux Enterprise Application-Linux server application information. The following is a detailed description. 1. Apache 2.0.59 for Linux Note: One of the most popular HTT

/Linux/rh38-x86-32/initrd. IMG ramdisk_size = 8192 Ks = http://install.test.com/conf/ks_module.cfg ksdevice = LinkLabel 6Kernel Linux/rh38-x86-64/vmlinuzAppend initrd = Linux/rh38-x86-64/initrd. IMG ramdisk_size = 8192 Ks = http://install.test.com/conf/ks_module.cfg ksdevice = LinkNote: pxelinux.0 and pxelinux. cfg must be in the same directory by default. 3.3. p

one thread at a time, and the Hyper-threading processor may run multiple threads at the same time , so it can take advantage of the processor's Hyper-threading feature to raise performance . The Linux system only runs the SMP kernel to support Hyper-threading , but the more CPU you install, the lower the performance increase rate . Also, theLinux kernel identifies multi-core processors as multiple single-core CPUs, such as two quad-core CPUs, which a

====================================================When the Linux nginx reaches a high number of concurrency, the number of TCP time_wait sockets often reaches 20,000 or 30,000, so the server can easily be dragged to death.In fact, we can simply modify the Linux kernel parameters, can reduce the number of time_wait sockets of Nginx

I have heard of the word ssh before I learned Linux. I learned the three major j2ee frameworks, so when I heard about ssh, I immediately thought of struts + spring + hibernate, at that time, I was thinking that this is not a java thing? Why is it related to Linux ??? Later on Baidu's ssh, we found that ssh is not a general term for the three frameworks, but a security protocol, short for Secure Shell... It

currently one of the best FTP Server tools, and the VS is "Very secure" (very safe) abbreviation, it can be seen that the biggest advantage is security, in addition, it also has small size, can be customized strong, high efficiency advantages.If you choose to install Red Hat Linux 9.0 completely, the VSFTPD server is

affect the subsequent new connections. In this case, it is necessary to adjust the TCP kernel parameters under Linux, so that the system can release the TIME_WAIT connection faster.Open configuration file with vim: #vim/etc/sysctl.confIn this file, add the following lines of content:Net.ipv4.tcp_syncookies = 1Net.ipv4.tcp_tw_reuse = 1Net.ipv4.tcp_tw_recycle = 1Net.ipv4.tcp_fin_timeout = 30Enter the following command for the kernel parameter to take e

Website administrator-LINUX Server SETUP-WWW-Linux Enterprise Application-Linux server application information. For more information, see the following section. ++ ++ Body ++ ++ If you are a Linux enthusiast, you may have master

You see nearly 300 Linux distributions listed on distrowatch.com, almost any release can be used as a server system, and in the early days of Linux, it was a "all-in-one" distribution for users, such as Slackware, Debian And Gentoo can do heavy work for homes and businesses as servers. That might be good for amateurs, but it's also a lot of unnecessary for profes

PS: I used to basically do not use Linux remote graphics desktop, a few days ago the development of colleagues to configure CentOS VNC has problems, to find me to solve, on the way to summarize the summary, this summary is relatively complete. The following configurations are tested in centos5.x and 6.x, SuSE Enterprise, and other distributions are generally common:First, install the corresponding desktop environment with the VNC

Use ten commands to check Linux server performance within one minute If the load on your Linux Server suddenly surges and an alert message is sent to your mobile phone, how can I find out the Linux performance problem in the shortest time? Let's take a look at this blog post

Article Title: Create a RADIUS server in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. By Li Chaojun 　　 ---- Remote Authentication Dial-Up User Service (RADIUS) is a Networ

to normal after some timeeg:http/1.1 OK (CRLF)2. The response header is described later3, the response body is the contents of the resources returned by the serverIv. HTTP protocol Details of the message header chapterHTTP messages consist of client-to-server requests and server-to-client responses. Both the request message and the response message are from the start line (for the request message, the star

more personalized and you have not installed the OpenSSH service, you can insert the first disc and install all software packages starting with OpenSSH. At this point, someone replied, "the above is all nonsense. our system has installed the so-called security management service by default. how can we use it ....... ", haha, you can't wait to know how to remotely manage Linux. Since our clients generally use the windwos operating system, the key to

also prone to confusion, you may need to reset the parameters of each service, so that the normal operation. Server maintenance Software Maintenance 3, database services Database after a long run, you need to adjust the database performance, so that it into the optimal state. The data in the database is the most important, these databases if lost, the loss is huge, so you need to regularly back up the database, just in case.