Step one, press the keyboard at the boot, enter the following menuStep Two: Select the first item, press the E key to modifyStep three, navigate to Ro (Linux or Linuxefi)Step four: Change the RO to "RW init=/sysroot/bin/sh". After completion, press "Ctrl+x" can now enter the single-user mode, then enter the following command for root password modification, after the completion of the change to force a restart. CHROOT/SYSROOT/PASSWD Root Touch/.autorelabelCentOS
caching for slow Block devices and introduces LVM caching (Technical Preview ), use XFS as the default file system. The Network grouping technology was introduced as a bind backup method for Link aggregation, which greatly improved NetworkManager, provided firewalld, a dynamic firewall daemon process, and added security extension to the DNSSEC domain name system, it comes with openlms to manage Linux systems and provide common infrastructure, and introduces trusted network connection functions
Rpmforge Repository is a utility that's used to install third party software packages under Red Hat Enterprise Linux (RHE L) and Community ENTerprise Operating System (CentOS). It provides more than software packages in the RPM format for these Linux distributions.Rpmforge Repository not a part of the RHEL or CentOS but it's designed to work with these operating systems. The complete list of Rpmforge packages can is fount at http://packages.sw.be/.Ins
1. differences between RHEL and CentOS: in RHEL and CentOS, I first came into contact with RHEL. from RHEL, the first company used RHEL, now this company uses CentOS, but the difference between them is not very easy to find. 1) RHEL
How to Upgrade MariaDB 5.5 to MariaDB 10.1 on Centos/rhel 7 and Debian Systems
Upgrade MariaDB 5.5 to MariaDB 10.1 on Rhel/centos 7
Reprinted from Https://www.tecmint.com/upgrade-mariadb-5-5-to-10-centos-rhel-debian-ubuntu/What ' s new
Few new features has b
RHEL7 Basic UnderstandingRed Hat Company officially released the Enterprise Linux 7 release on June 11, 2014, which has been enhanced in bare servers, virtual machines, IaaS and PaaS, and more reliable and more robust data center environments to meet a variety of business requirements. RHEL 7 provides enterprises with a cohesive, unified infrastructure architectu
RHEL7 Basic UnderstandingRed Hat Company officially released the Enterprise Linux 7 release on June 11, 2014, which has been enhanced in bare servers, virtual machines, IaaS and PaaS, and more reliable and more robust data center environments to meet a variety of business requirements. RHEL 7 provides enterprises with a cohesive, unified infrastructure architectu
This howto guide shows your ' ll how to enable EPEL repository under Rhel/centos 6/5 to the install additional standard Open source packages by using the YUM command.
What is EPEL
EPEL (Extra Packages for Enterprise Linux) are open source and free community based repository project from Fedora team which PR Ovides 100% High quality add-on software packages for Linux distribution including RHEL (Red Ha
Run the wget command to download and install the RPM file. RHEL/centos 7 64 bit # RHEL/centos 7 64-bit ### Wget http://dl.fedoraproject.org/pub/epel/beta/7/x86_64/epel-release-7-0.2.noarch.rpm# rpm-IVH epel-release-
Configure PXE network startup server in RHEL/CentOS 7
PXE Server -- pre-start execution environment -- instructs the client computer to Start, Run, or install the operating system directly from the network interface, without burning a CD/DVD or using a certain physical media, it can reduce the workload of installing the Linux release on multiple machines on your network at the same time.
Set PXE network st
Have you ever come across a situation where you can't remember the user account password on a Linux system? It's even worse if you forget the root user password. You cannot perform any changes to the entire system. If you forget the user password, it is easy to use the root account to reset the password.But what if you forget the root account password? You cannot use a user account to reset the root account password because the user account is usually not authorized to perform this task.Reset fo
Tags: ROM install message use EMCTL exit Map System log controlsphenomena: oracle 执行job:expdp,数据库实例直接宕掉,报错如下:
ORA-27300: OS system dependent operation:semctl failed with status: 22
ORA-27301: OS failure message: Invalid argument
ORA-27302: failure occurred at: sskgpwrm1
ORA-27157: OS post/wait facility removed
ORA-27300: OS system dependent operation:semop failed with status: 36
ORA-27301: OS failure message: Identifier removed
ORA-27302: failure occurred at: sskgpwwait1 Database version 11.2.0.
Tags: print x86_64 xid img key com linux system Ali RhceEnvironmentwin7+vmware-workstation-full-14.1.1.28517Secret key self-BaiduNew Virtual machineTypicalInstall the operating system laterLinux--Red Hat Enterprise Linux 7 64-bitSelect Installation Location20G disk + split into multiple filesCustom Hardware2G Memory1CPU + Processor Turn on virtualization Technology (virtualization Technology)CD/DVD Select ISO image for
Docker entry (1) docker installation in Centos 7, centosdocker
Install docker in centos 7What is Docker
Docker is an open-source project born in the early 2013 S. It was initially a spare-time project within dotCloud. It is implem
Reset the root account password for CentOS/RHEL 7
Have you ever encountered this situation: cannot you remember the user account password on Linux? If you forget the root user password, the situation is even worse. You cannot perform any changes for the entire system. If you forget the user password, it is easy to use the root account to reset the password.
But if you forget the root account password, what
30 things to be done after minimal RHEL/CentOS 7 installation (1)
CentOS is an industrial standard Linux release and a derivative version of Red Hat Enterprise Edition Linux. You can use it immediately after installation. However, to make better use of your system, you need to perform operations such as upgrading, installing new software packages, and configuring specific services and applications.
This ar
Tags: oracle rhel7 Oracle DB RHEL 7RHEL 7 was opened for download in 2014 and can be found in the "Certifications" section of MOS:12.1.0.2 passed the certification on the RHEL7.12.1.0.1 failed to pass the certification on RHEL7.11.2.0.4 passed the certification on the RHEL7.11.2.0.3 failed to pass the certification on RHEL7.Some other points of knowledge:1. There are also
1, Systemctl is Rhel 7 of the service management tools of the main tool, it blends the former service and Chkconfig functions in one. You can use it to enable/disable services either permanently or only in the current session.
Systemctl can list the running service status, as shown in figure:
Systemd-cgls lists the running processes in a tree, which can recursively display control group content. As show
How do I reset the root user account password forgotten in CentOS/RHEL 7? (1)
Have you ever encountered this situation: cannot you remember the user account password on Linux? If you forget the root user password, the situation is even worse. You cannot perform any changes for the entire system. If you forget the user password, it is easy to use the root account to reset the password.
But what if you forge
30 things to be done after minimal RHEL/CentOS 7 installation (3)30 things to be done after minimal RHEL/CentOS 7 installation (3) 12. install Apache Tomcat
Tomcat is a servlet container designed by Apache to run Java HTTP web servers. Install tomcat as follows, but note that Java must be installed before tomcat is ins
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