Home PC Games Linux Windows Database Network Programming Server Mobile  
  Home \ Linux \ CentOS 6.5 upgrade to CentOS 7     - JDK installation under CentOS (Linux)

- Bitmap memory footprint of computing Android memory optimization (Linux)

- Comparison of C # and Java (Programming)

- Installation Elementary OS Freya 20 things to do (Linux)

- Linux Kernel 4.2 Installation Instructions (Linux)

- Seven kinds of DDoS attack methods and techniques Defensive (Linux)

- Nginx + uWSGI + Django + Python Application Architecture Deployment (Server)

- How open source code libraries hosted on Github (Linux)

- Usage of sudo (Linux)

- SQL statement to repair SQL Server database (Database)

- ActionContext and ServletActionContext Summary (Programming)

- Linux kernel netpoll framework netconsole (Linux)

- [SHELL] MySQL primary recovery solution from + Keepalived online (Server)

- Install Oracle database error process of [INS-35172] (Database)

- Linux at command (Linux)

- Talk Packages (Linux)

- CentOS 6.5 boot automatically mount the hard drive (Linux)

- Kali Linux virtualbox rc = Error 1908 workaround (Linux)

- Java Builder mode (Programming)

- Gnu Linux - Ubuntu System Clean-term consolidation (Linux)

  CentOS 6.5 upgrade to CentOS 7
  Add Date : 2016-06-10      
  CentOS7 has released previously always wanted in the above test, has no chance, this can finally feel the CentOS7. CentOS6.5 been using for some time, but because it is still stuck in kernel version 2.6.32, so I decided to upgrade to CentOS7.

Incidentally interject, before upgrading a kernel, upgrade the kernel to the latest 3.15.

After the upgrade, the disk space is not a sudden, when you check the log file is actually found messages written 81G.

81G ah, then delete this file, restart, found that the log records the following information:

18: 37: 43,729 ERR kernel: DMAR: [DMA Readdevice [0d: 00.0]

18: 37: 43,730 ERR kernel: DMAR: [fault readevice [0d: 00.0] fault addr fffff000

After Google about it, because open the CPU virtualization support, the kernel needs to close

intel_iommu = off

But because I do not know if there will be other problems 3.15 kernel, so the exchange or 2.6.32.

Pull so much here that is entered

Reference to the online article: http: //seven.centos.org/2014/07/testing-centos-6-to-centos-7-upgrades-via-centos-testing-repo/

The main steps:

1. Add the repo file:


name = CentOS- $ releasever - Upgrade Tool
baseurl = http: //dev.centos.org/centos/6/upg/x86_64/
gpgcheck = 1
enabled = 1
gpgkey = file: /// etc / pki / rpm-gpg / RPM-GPG-KEY-CentOS-6

2. Install the Upgrade Kit

yum install RedHat-upgrade-tool preupgrade-assistant-contents

3. Review the upgrade directory available

preupg -l

If the result is CentOS6_7, continue:

preupg -s CentOS6_7

At this time, the upgraded system will analyze the potential danger. The danger of having a hierarchical, I can refer to reference specific articles.

4. Upgrade System

centos-upgrade-tool-cli --network 7 --instrepo = http: //mirror.centos.org/centos/7/os/x86_64/

Here, if prompted: dangerous cause can not be upgraded directly force an upgrade:

centos-upgrade-tool-cli -f --network 7 --instrepo = http: //mirror.centos.org/centos/7/os/x86_64/

The upgrade process, because CentOS7 depot GPG KEY interrupted, execute:

rpm --import http://mirror.centos.org/centos/7/os/x86_64/RPM-GPG-KEY-CentOS-7

Then proceed to system upgrade command.

After the upgrade package download is complete, you need to restart, and then configure a new package, then only a cup of coffee and so on.

After the upgrade, can not enter the graphical interface, the interface can only enter the character, I do not know because the gnome desktop upgrade to 3.0 lead.
- You can not ignore the seven Git tips (Linux)
- RPM package management under Linux (Linux)
- Linux system installation Gitlab (Server)
- Java data structures - the linear form of the single-chain applications (Programming)
- Linux screen command (Linux)
- socket busy poll of Linux kernel 3.11 to avoid sleep switch (Linux)
- Samhain: Powerful intrusion detection system under Linux (Linux)
- Spacewalk remove packages install the update (Linux)
- Usage Linux device tree (Programming)
- MySQL 5.7 and 5.6 group by differences (Database)
- Oracle how to assess the true concurrent session (Database)
- Redhat 7 modify the default run level method --RHEL7 use systemd to create a symbolic link to the default runlevel (Linux)
- Java call by value and by reference (Programming)
- Java regular expression syntax (Programming)
- Linux operation and maintenance of the automated installation and deployment RHEL7.0 Cobbler (Linux)
- Advanced Search Oracle study notes (Database)
- Object-oriented language Java some of the basic features (Programming)
- How to use awk command in Linux (Linux)
- MySQL optimization resulting order by using filesort (Database)
- Linux file permissions to modify the command: chmod (Linux)
  CopyRight 2002-2020 newfreesoft.com, All Rights Reserved.