rhce course

RHCE (REDHAT7)(iii)First, the configuration of soft RAID (MDADM)Mdadm system will be installed automatically, do not need additional installation# mdadm-c/dev/md1-a yes-l1-n2/dev/sdb1/dev/sdb2 ( note 1 is preceded by the letter L,1 represents raid1, 2 for 2 fast drives )View information:# mdadm-d/DEV/MD1generate the configuration file (otherwise, the server restarts the soft RAID is disabled):# Mdadm-ds >/etc/mdadm.conf# MKFS.XFS/DEV/MD1# MOUNT/DEV/M

tasks, the system comes with a scheduled task, priority can be added 0 beginning,/etc/anacrontab if the task did not execute successfully, every 5 minutes check.Run once per 5 s#！ /bin/bashWhile TrunDoLs-l/etcSleep 5sDoneLesson Five:1. IP link Show eth[x]View interface Status2. Locate-i ignoring case3, Find-perm +222 Ugo can have write permissionfind-perm-222find-perm-002 other people have write permission4.netstat-r Viewing routesLesson Six:1, Rhel7 SystemctlSystemctl Restart NetworkSystemctl

RHCE test Disk Quota1. Create a user who needs to limit the quota 2. modify the configuration file and add the quota parameters.Modify the configuration file # vim/etc/fstab; add usrquota (quotas for users) and kgquota (quotas for groups) after ults) 3. Configuration takes effectMethod 1: # restart init 6Method 2: # mount-o remount/mnt/sdb2 (mount point)4. Scan and load partitions# Quotacheck-cumg mount point (if the mount point is successful, t

RHCE review notes-Linux Enterprise Application-Linux server application information. For more information, see below. Knowledge Point 1: DHCP 1. Obtain the two protocols required for network Configuration from the server: DHCP (Dynamic Host Configuration Protocol) and bootp. If there is a DHCP server in the LAN, DHCP works; if you get information from the DHCP server on another network, you need the bootp protocol. 2. configuration file:/etc/dhcpd.

-t PORT_TYPE -p tcp 8090 Where PORT_TYPE is one of the following: http_cache_port_t, http_port_t, jboss_management_port_t, jboss_messaging_port_t, ntop_port_t, puppet_port_t. ... [[email protected] ~] # semanage port -a -t http_port_t -p tcp 8090 [[email protected] ~] # systemctl restart httpd [[email protected] ~] # netstat -pantu | grep httpd tcp6 0 0 ::: 8090 ::: * LISTEN 9668 / httpd One of the questions on the RHCE exam is: Configure

process text. Generally, there are not many opportunities to use regular expressions. However, to become a system administrator, regular expressions cannot be learned. The reason is that the system generates more information than you can imagine every day. Because the amount of data in the system is too large, it is unrealistic to ask the system administrator to view so much information every day. It is wise to find out the problematic lines from thousands of lines for processing. At this time,

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 common command line processing and various desktop work. Course objectives: run Linux commands on the bashshell command line and execute programs on the command line

. Important Basis for automated management: Needless to say, you know that managing a host is not a simple task. Daily tasks include querying login files, tracking traffic, monitoring user Usage Status, host device status, host software update query, and resolving temporary requirements of other users, these tasks can be handled manually, or a simple program can be compiled to automatically process and analyze the tasks on a daily basis, so that you will be notified of any problems. Of

luksaddkey/dev/sda6/root/passwd # enter the password "enter any passphrase: 5. Add permanent Mount entries in/etc/fstab. [[emailprotected]~]#echo‘/dev/mapper/nolinux/nolinuxext4defaults,_netdev00‘>>/etc/fstab[[emailprotected]~]#tail-1/etc/fstab/dev/mapper/nolinux/nolinuxext4defaults,_netdev00 Note: here the Mount parameter _ netdev is used to prevent the entire system from being unable to start due to the device's failure. After _ netdev is used, the encrypted partition cannot be mounted, it

protected by copyright and can be retained for free. Currently, it is estimated that only 2% of Linux code is written by Linus Torvalds, although it still has the Linux core (the core part of the operating system) and retain the final ruling right to select the new Code and the new method to be merged. After serving as a student and researcher for 10 years at the University of Helsinki, Linus Torvalds received a job at Transmeta, A New Silicon Valley company known for its recruitment genius and

folder" by default ". For example, if my user name is "cc", my default current working directory is a folder named "cc. 4. Linux PWD command example Example 1: run the PWD command to view the full path of the default working directory. [CC @ CC ~] $ Pwd The result is as follows: [CC @ CC ~] $ Pwd /Home/CC [CC @ CC ~] $ Example 2: run the PWD command to view the specified folder. [CC @ CC ~] $ CD it.dengchao.org // enter the it.dengchao.org folder. Of

The focus of this unit is: configure the clock (test site, add a specified ntp server for time synchronization), configure the printer and manage the printer. This unit is easy to understand, the clock configuration is actually the modification time. You can directly modify the time by: system-management-date and time (you can also run the command system-config-date: you can also synchronize the time on the network. Next, let's see how to add a printer: system-management-printing (or system The

Database questions: Student table, Course Selection table, course schedule, course schedule There are three basic tables in the teaching database: Student table S (S #, SNAME, AGE, SEX). Its Attributes indicate the student's student ID, name, AGE, and gender. The course selection table SC (S #, C #, GRADE ), the attrib

What is a project training course, and what is the difference between a professional course and what kind of person can learn the training course?

Python Course Selection System Development Program and python Course Selection System Development This program is developed for the Python Course Selection System for your reference. The specific content is as follows: Role:Schools, trainees, courses, LecturersRequirements:1. Create two schools in Beijing and Shanghai2. Create three courses for linux, python, and

Python detailed process of crawling Coursera course resources, coursera Course Resources Sometimes we need to add some classic things to our favorites and review them from time to time. Some courses on Coursera are undoubtedly classic. Most of Coursera's finishing courses provide complete teaching resources, including ppt, video, and subtitles. It is very easy to learn offline. Obviously, we won't download

OBA Development Course Series (1): OBA.zip, a tool for integrating Office and business data Lecture content: in modern enterprise Office environments, Office software (such as Word and Excel) can be skillfully operated, and different enterprises also have their own business systems (such as ERP and SAP ). Independent environments increase the complexity and complexity of work. This course