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In a recent study of the RHCE course, the previous article briefly tells you how to use Ftp+http+kickstart as a KVM VM network installation process, read: http://gshao.blog.51cto.com/3512873/1882392Today we talked about PXE installation RHEL7Environment:Virtual Host: RHEL 7.0Hardware: 4vcpu+8g+40gdiskIP Address: 172.16.38.101. Making a local source[[email protected] ~]# Mkdir/mnt/dvd #创建/mnt/dvd directory for mounting cdrom[[email protected] ~]# Mount

The multi-path DM-Multipath of the device mapper in a Linux cluster allows you to configure multiple I/O paths between the server node and the storage array as a single device. These I/O paths are physical SAN connections that can contain independent cables, switches, and controllers. Multi-path sets the I/O paths and generates new devices composed of these integrated paths. This video shows the tutorial of the Linux cluster in the old studio and explains the DM-Multipath and Its configuration.

RHCE experiment: xinetd-Based Access Control-Linux Enterprise Application-Linux server application information. See the following for details. Course Background: RH253 Requirement: configure the telnet server and use xinetd to implement the following access control functions 1. the maximum number of connections to the telnet server is 20. 2. If the number of telnet requests per second reaches 4, the service will automatically stop for 1 minute.

RHCE Internet access-general Linux technology-Linux technology and application information. For details, refer to the following section. What is depressing is that, although it has been two months since Linux was installed, it has been using the Internet access method of China Netcom and ADSL. There is no problem with accessing the Internet in Linux in this way... Last month, it was transferred to campus network. Huawei's 802.1x certification. Downlo

RHCE (REDHAT7) (ii)The hard disk is in sector,1 sector is 512b (6 and below in cylinder,1 cylinder is about 8M)The partition format for XFS supports up to 500T (6 and below partition formats of Ext4, up to 50T support)Fdisk MBR Partitioning methodGdisk GPT Partitioning methodParted Advanced partitioning operations (create, copy, resize partitions, etc.)Partprobe Refresh partition table (or restart server)Fdisk-lFdisk/dev/sdb (n new,p print,d Delete,w

Two. PXE configuration1. Install and enable the TFTP serviceYum-y Install tftp* (in fact, the need is TFTP tftp-server these two components, but for convenience ~)Vi/etc/xinetd.d/tftpModify Disable =noWq SaveService xinetd Start2. Install and enable the DHCP serviceHint (server ip:192.168.10.125; DHCP address pool is 192.168.10.135-192.168.10.145;)Yum-y Install DHCPVi/etc/dhcp/dhcpd.confSubnet 192.168.10.0 netmask 255.255.255.0 {Option routers 192.168.10.125;Option Subnet-mask 255.255.255.0;Opti

be able to set Red Hat Enterprise Linux servers and simple configuration of common network servers and security settings.Specific course objectives:Network service configuration for Red Hat Enterprise LinuxConfigure the network system through DNS and DHCPImplement web services through Apache and squidNetwork Sharing Service through FTP, NFS, and sambaSMTP service with Sendmail and PostfixRemote connection and key-value management through SSHBasic knowledge of encryption technologyImplement kern

RHCE Study Notes 2 -- command line operation File1. Create and delete a file (touch, rm) touch xxxx create a new empty file touch-t 201412250101 xxxx create a file and specify the time attribute (year, month, day, And hour. seconds) [root @ cai home] # touch xxxx [root @ cai home] # touch-t 201412301030 yyyy [root @ cai home] # ls-l xxxx yyyy-rw-r --. 1 root 0 November 2 13:00 xxxx (current time November 2, 2015 02:13)-rw-r --. 1 root 0 December 30 20

The following 30 focuses on the main direction of the rhce examination: 1. Familiar with RedHat Linux installation options, especially network installation 2. Understand Lilo, grub, and other startup management programs and boot Processes 3. Able to install (RPM) and set other installation options afterwards 4. Understand the RedHat Linux System Configuration 5. Familiar with various configuration files under/etc/sysconfig/network-Scripts 6. understa

This section studies the priority of the process and the setting of the nice value. In the case of high CPU load, high priority processes take precedence. RHEL7 priority = Priority coefficient +nice value to determine. The precedence factor can be

Article Title: RHCE's contact notes on Soft RAID and LVM. 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

I will introduce how to configure the lamp environment in linux. For the convenience of installing the software, please install the yum tool first, for this yum tool, some people say it is silly to install it. I said that there are such easy-to-use

KICKSTARTkickstart is a dedicated tool for RedHatLinux. kickstart can be used to create ks. cfg configuration files. RedHatLinux can be automatically installed on the device by reading the content of the configuration file. The administrator can

For vi usage, let's first talk about the text editor and word processing software Text Editor: in windows, the text editor is mainly for notepad in Linux, there are many text editors, such as nano, emacs, in windows, the vi processing software

It is suitable for new Linux users who want to understand and master basic knowledge to smoothly use their own RedHatLinux system. After completing this course, RedHatLinux users can efficiently use and customize the RedHat system, and execute

Environment Virtual Machine + rhel5.1 Add a 1g Virtual Disk (sdb) for the Virtual Machine to experiment with creating 4 partitions (sdb1-4) for the sdb) each partition is 100 Mfdisk/dev/sdbpartprobeRAID create two RAID1mdadm-C/dev/md0-l1-n2/dev/sdb {

I. Why is samba used? The reason is that Samba is the first to build a bridge between Linux and Windows. The emergence of Samba allows us to communicate with each other between Linux and Windows, for example, copying files and sharing resources

1) if the file newdir/file2 does not exist but the directory newdir already exists, what is the result of the following command? Mvfile1newdir/file2file1 will be moved to newdir and renamed as file2file1 will be copied to newdir and named file2. An

Critical situations of RedHatEnterprise5 system faults include grub configuration file loss, fstab partition mounting table loss, And/boot system boot directory deletion failure recovery, this article provides a recovery policy for these three

Today, we finally installed RHEL5 on the server1 server. I'm glad that there were a few more funny faces on the faces of the past two days. I always felt that the class was very serious. It seems that there are still some things, in particular, the