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How to Configure NFS servers in two LINUX systems-Linux Enterprise applications-Linux server application information. For more information, see the following. I. Installing an NFS server Check whether two software packages nfs-utils and portmap are installed in linux (the t

Article Title: how to configure NFS servers in two Linux systems. 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. I. Installing an NFS server Check whether two software packages nfs

Everyone knows the compiling steps of various network server programs and knows that there are two types of network servers: cyclic services and concurrent services. Here is a summary of the source code.First of all, the process of Loop Network Server programming is as follows: This type of server model is a typical Loop Service. Without the multi-process/thread technology, the Service throughput is limited. As you can see, if the data of the previous

At present, many users use Linux servers, but the current network environment is not very calm, and there are always malicious attacks. At ordinary times, some friends may encounter the problem of server hacking. After collecting and sorting out relevant materials, I have found a solution for Linux Server hacking, I hope you will have a lot to learn. If you have

As a Linux/unix system administrator, I often ask this question: What can shell do? PHP is so powerful, why not use PHP to complete the work? In fact, shell is mainly used for database backup (SVN backup), scheduled task (crontab), service status monitoring, and ftp remote backup compared with PHP development languages. For these tasks, shell is widely recognized as powerful, which is also one of the basics of every

If we have more than one Linux server, and need to manage maintenance, if you are using putty, usually you will open multiple Windows without a window is a server account login. This can make you confused if we can manage through the following so is it much easier?What tools and skills do we need to complete the above operations: Generate Keys for individual servers SSH Password-free interopera

USER PR NI VIRT RES SHR S%cpu%MEM time+ COMMAND 20248 Root 0 0.227t 0.012t 18748 S 3090 5.2 29812:58 java 4213 Root 0 2722544 64640 44232 S 23.5 0.0 233:35.37 Mesos-slave 66128 titancl+ 0 24344 2332 1172 R 1.0 0.0 0:00.07 Top 5235 Root 0 38.227g 547004 49996 S 0.7 0.2 2:02.74 java 4299 Root 0 20.015g 2.682g 16836 S 0.3 1.1 33:14.42 Java 1 root 0 33620 2920 1496 S 0.0 0.0 0:03.82 Init 2 Root 0 0 0 0 S 0.0 0.0 0:00.02 Kthreadd 3 Root 0 0 0 0 S 0.0 0.0 0:05.35 ksoftirqd/0 5 root

How to configure WU-FTP server-Linux Enterprise Application-Linux server application information in a Linux environment is as follows. Among many network applications, File Transfer porotocol plays an important role. Software resources are a very important resource on the Internet. Most of the various software resources are stored on the FTP server. FTP and WEB s

the statistics of the system in a similar dstat format; like Dstat, it collects statistical information about different resources of the system, such as processors, memory, and networks. A simple example given here shows how to use COLLECTL to report network usage/bandwidth. $ collectl-sn-ot-i0.5 Waiting for 0.5 second sample ... # ----------Network----------> #Time kbin pktin kbout pktout 10:32:01 40 58 43 66 10:32:01 27 58 3 32 10:32:02 3 28 9 44 10:32:02 5 42 96 96 10:3

ExperimentLab Environment:Set up two Linux servers on the virtual machine , one as The DHCP server and the other as the client to obtain the IP address automatically;Experimental requirements:One, the Linux server automatically assigns an IP address as a DHCP service;Two, The Linux server obtains the IP address as the

One. Scenario Description:There are a lot of servers in an environment, each server hostname are different, there are hundreds of servers, if one by one through SSH modification, then for us, the workload is very large, and inefficient, and this hostname for our peacetime operation is also very important, When we ssh to a server, if the host name is not set, then we need to know the location of the server b

Common Linux Driver selection for Dell servers-Linux Enterprise Application-Linux server application information. The following is a detailed description. The main driver is Nic and RAID card. Generally, you can use commands such as lspci, lsmod (module driver), and dmesg. 1. 1X50 series: 1750 RAID card Fusion MPT de

corresponding server-side caching rules, which can greatly improve the performance of the site. Therefore, for PHP programs that are deployed on Linux servers, we recommend that you turn on Use gzip Web compression when the server is supported.second, the Web server processing HTTP compression process is as follows:1. After the Web server receives the HTTP request from the browser, check whether the browse

Let's take a look.Linux iptablesAdd multipleFtpThe specific method of server ing. The following two steps are involved: 1. First, convert the source addresses of the three ftp servers to those of the gateway. 192.168.0.254 is the gateway 10.0.0.0/24 is the network segment Iptables-t nat-a postrouting-s 10.0.0.0/24 -- sport 20, 21-j SNAT -- to-source 192.168.0.254 If the gateway is a dynamic IP address Iptables-t nat-a postrouting-s 10.0.0.0/24 -- spor

Statistics on linux servers: 1) number of port 80 connections: www.2cto. comnetstat-nat | grep-I quot; 80 quot; | wc-l12) count httpd protocol connections ps-ef | grephttpd | wc-l13), statistics already... Statistics on linux servers: 1) number of port 80 connections: www.2cto.com netstat-nat | grep-I "80" | wc-l12)

Run vmstat to view the linux Server-Linux Enterprise Application-Linux server application information. For more information, see. Introduction to vmstat Server information is collected through STATSPACK, and VMSTAT information is collected to display the server status. The VMSTAT tool is the most common UNIX monitoring tool that displays the status values of

Environment: Oracle VM Virtualbox, Ubuntu Server 12.04,securecrt 1, first installed in the virtual machine Linux operating system, here I choose is Ubuntu Server, in order to facilitate the follow-up operation, the network recommends bridging (bridge), because the computer is older, virtual machines and Linux are 32-bit When installing Ubuntu, be careful to choose to install the SSH service, if not install

Introduction to several tools for stress testing on Linux disks or other types of servers (I) dd: reads data from one source and writes it to another destination address in BITs [SQL] [root @ linwaterbin ~] # Dd if =/dev/zero of =/home/oracle/disktest bs = 1 M count = 512 conv = fdatasync www.2cto.com comment if: from where to go bs: data Block Size read each time count: Number of bs conv read: eliminate th

Label:Because of the work required, so slowly configure two Linux servers above the MySQL database to achieve one-way database synchronization, the conditions for synchronizing the database are: (1) The names of the databases on both servers should be the same. (2) The structure of the database table is the same, a different database, a table, a database one less

Article Title: run multiple tomcat servers 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. First, decompress tomcat to the linux