rhcsa rhce

Installing packages with Yum is quick and easy, with several software libraries from CentOS and other Third-party developers with software components outside of the default repositories of base and updates to meet your needs, which have varying degrees of stability within the CentOS community, Support and cooperation. Here are a few examples of software libraries: 1. Rpmforge This software library is primarily maintained by DAG, providing more than 10,000 CentOS components, including MPlayer,

The most authoritative certification in the Linux field: RHCE10 Certification: 1st: RHCE -- RedHat certification engineer 2nd: SCJP -- Sun Certified Java software engineer 3rd: OCP -- Oracle certified expert 4th: CCNA -- Cisco Certified Network Administrator 5th: A + -- CompTIA certified computer service engineer 6th: CTT + -- CompTIA certified Technical Instructor 7th: SCWCD -- Sun Certified Web component developer The most authoritative certificati

Article Title: RHCE experiment: xinetd-Based Access Control 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. Requirements: 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 teln

Logging in bridging mode configuring the Internet 1. Configure the corresponding virtual machine network mode to "Bridging mode"2. View and configure the network card and IP address of this computer (Windows)Example configuration:After configuration, a diagnosis, a restart, you can continue to surf the internet, OK3. Specify the network adapter for the virtual machine4. Configure the virtual machine IPBe aware of the same network segment as the Windows host.5. Restart the virtual machine network

startup Kernel Yum install authconfig-GTK Vim/etc/chrony. confSystemctl restart chronyd. Service (enable) Useradd-u 1234 Alex Fdisk/dev/vdb n --> E; fdisk/dev/vdb n --> L --> E --> + 500 m --> E --> T --> 82 --> WPart-A/dev/vdbMkswap/dev/vdb6UUIDVim/etc/fstabUUID swap defaults 0 0Swapon- Mkdir/root/findfilesFind/-user IRA-exec CP {}/root/findfiles \; Grep 'semisc'/usr/share/dict/words/root/wordlist This article is from the "Blood Java" blog, please be sure to keep this source http://su

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

RHCE test disk quota 1. create users who need to limit the quota 2. modify the configuration file and add the quota parameter modification configuration file # vim/etc/fstab; after ULTS ults, add usrquota (quota for the user) and maid (quota for the group). 3. the configuration takes effect. Method 1: # init... RHCE test disk quota1. create a user who needs to limit the quota 2. modify the configuration

The following 31 focuses on the main direction of the RHCE test: 1. understand the concept of Hard Disk separation and RedHatLinux installation process 2. familiar with RedHatLinux installation options, including network and automatic installation 3. understand activation management procedures and boot processes such as LILO and GRUB. 4. able to install and set other installation options later. understand RedHatLinux's file system (FHS) 6. learn about

1. candidates must master the following basic skills because they are required for the RHCT and RHCE tests * usestandardcommandlinw.ls (e.g ., ls, cp, mv, rm, tail, cat, etc .) tocreate, remove, view, andinvestigatefilesanddirectories * usegrep, sed, andawk 1. You must master the following basic skills because they are required for the RHCT and RHCE tests.* Use standard command line tools (e.g., ls, cp, mv,

RedHat officially divides the RHCE examination into two levels: expert level and standard level. Experts require you to have years of experience in UNIX/Linux system management and network configuration and management. RH302 is a hands-on operation test bound with RH300. If you think you are experienced, you can take the RH302 hands-on test directly without having to study the RH300 course. The standard level is set for most candidates who have no exp

Take the RHCE lab as standard. A simple NTP time server standard configuration is as follows: (Fu) server side: first, modify the system time and write the system time into dateMMDDhhmmYYYY in the hardware time. ss; hwclock-wvim/etc/ntp. confrestrictdefaultnomodifynotrapnoqueryrestrict127.0.0.1restrict192138. Take the RHCE lab as the standard. A simple NTP time server is configured as follows: (Fu) Server

Ed2k: // | file | Protocol | 380828740 | Protocol | h = MFLJYK2TIONHM27VEGTTMHRMVMIEPIEQ | ed2k: // | file | Protocol | 432054873 | 323a07cc7a5d16fddd7e12e Ed2k: // | file | tutorial rhel.4.dvd).cd1.rar | 380828740 | large | h = MFLJYK2TIONHM27VEGTTMHRMVMIEPIEQ | Ed2k: // | file | tutorial rhel.4.dvd).cd2.rar | 432054873 | small | h = SMH5JIUNNSNKNNOEBDY2WFY7YVDRXLZX | Ed2k: // | file | tutorial rhel.4.dvd).cd3.rar | 332093001 | small | h = l4jh2vosgflhigk5iqudkl7vatae7ap | Ed2k: // | file | con

Obtain some RHCE knowledge. 1. ssh-Xstationx displays the XWINDOW interface of the remote host. 2, mdadm. conf file. manmdadm. conf/etc/exports file compilation. manexports3: Test nissshguest2010 @ station104. Add the sendmail process to tcp-wrap. Obtain some RHCE knowledge. 1. ssh-X stationx displays the x window Interface of the remote host. 2. Compile the mdadm. conf file. man mdadm. conf /Etc/export

Configure the Samba service for the RHCE simulated test and share the/home/movie file directory. Only 192.168.0.0/24, 192.168.1.0/24, and 127.0.0.1 can be accessed. The shared file name is [Movie File]. the user cannot view it. Only the student group has the write permission. At the same time, you must share the home directories of every user in the student group, and set Netbiosname = GUEST200X # rpm-iv Configure the Samba service for the

My RHCE path-Introduction to installing the Linux experiment environment: VMwareWorkstation7.0.0build-203739rhel-server-6.2-i386-dvd.iso Network Setting for NAT Virtual Machine Installation Introduction: Install a NAT virtual machine after it is created, start Virtual Machine RHEL6.2 upgrade or install existing system installation and basic video driver rescue system start from local hard drive select first item: upgrade or My

This section briefly introduces the configuration of the proxy server squid, which has previously recorded the reverse proxy configuration, but is more widely used in the production environment for proxy and forward transparent proxy, this is also the focus of the RHCE test [root @ localhost ~] # Yum-yinstallsquid [root @ localhost ~] # Grep-v '^ #'/etc/squid. conf | uniq // view the squid after removing the comment line This section briefly introduce