Here we cover the fastest, most effective way to get the PHP DOM extension installed on CentOS. If youve just found out you need to install this extension, but. How to install latest kernel on Cent. OS Linux 7 using yum command nix. Craft. I am a new Cent. OS Linux 7 user who runs it on my Laptop. I liked the operating system. Is there is a way to run lateststable Linux kernel on a Cent. OS Linux version 7Cent. OS Linux 7. Linux kernel version 3. Both RHEL and Cent. OS does not provide an updated version of Linux kernel. Are there are any Linux mysql command line tools that dont require the entire mysql db installation package to be installed What Im trying to do is from server 1. This guide shows you how to use the command line within CentOS and Fedora in order to install RPM packages using YUM. YUM is the package management tool that helps you to install or update the package through the network or local, at the same time it provides. Yum y install createrepo epelrelease firewalld rsync yum y install nginx yum y update systemctl reboot. RHEL backports patches for the Linux kernel version 3. However, it is posssilbe to compile your own kernel or install pre built kernel using a third party repo. This tutorial shows you how to install the latest stable mainline stable Linux kernel version on a Cent. OS 7 using yum command. Install Only X86_64 Yum' title='Install Only X86_64 Yum' />This guide explains how to install Fail2ban software, an intrusion prevention framework on your CentOS 7 and 6 vps easily so you can protect your server from brute. Ive recently met the following method to install mariadb yum groupinstall mariadb mariadbclient for the server and yum groupinstall mariadbclient. In this article we will show how to install and use Python 3. CentOS 7 and Debian 98 with core language tools that can be used in the Linux command line. S3-Use-All-Space-768x635.png' alt='Install Only X86_64 Yum' title='Install Only X86_64 Yum' />The following instructions should work on RHEL 7. Oracle 7. x, Scientific Linux and more. Before you being. You can find out the current Linux kernel version using any one of the following command cat procversion. Sample outputs Linux version 3. Red Hat 4. 8. 5 1. GCC 1 SMP Tue Jun 2. UTC 2. 01. 7Or use old good uname command uname mrs. Sample outputs Linux 3. Finally, use the cat command to see the contains of etccentos release file cat etccentos release. Cent. OS Linux release 7. CoreHow To Check Linux Kernel Version. Step 1 Enable ELRepo. From the project home page It is an RPM repository for Enterprise Linux packages. ELRepo supports Red Hat Enterprise Linux RHEL and its derivatives Scientific Linux, Cent. OS others. The ELRepo Project focuses on hardware related packages to enhance your experience with Enterprise Linux. This includes filesystem drivers, graphics drivers, network drivers, sound drivers, webcam and video drivers. Import the public key. Warning Please note that installing a new kernel not officially supported by both RHEL and Cent. OS project. It is also possible that your system may not boot. As the kernel mllt packages are built from the source tar balls provided by kernel. Cent. OSRHEL distribution kernels. Hence, you must keep backups of all important files before you do this. Grab the GPG key using wget command wget https www. RPM GPG KEY elrepo. Check the fingerprint of the GPG key with the gpg command to make sure it matches the key published by elrepo. RPM GPG KEY elrepo. Sample outputs pub 1. DBAADAE5. 2 2. 00. RPM Signing Key for elrepo. Key fingerprint 9. C0 1. 04. F 6. 31. E0. B B1. AE 3. 09. B C3. 05 BAAD AE5. B8. C6. 6E6. D 2. DBAADAE5. 2 2. 00. RPM Signing Key for elrepo. Key fingerprint 9. C0 1. 04. F 6. 31. E0. B B1. AE 3. 09. B C3. 05 BAAD AE5. B8. C6. 6E6. D 2. If the fingerprint matches, import the GPG key with the rpm command. RPM GPG KEY elrepo. Install ELRepo for Cent. OS 7. Again using the wget command. Sample outputs 2. Resolving www. elrepo. Connecting to www. HTTP request sent, awaiting response. OK. Length 8. 58. Kapplicationx rpm. Saving to elrepo release 7. Ks in 0s. 2. 01. MBs elrepo release 7. Resolving www. elrepo. Connecting to www. HTTP request sent, awaiting response. OK. Length 8. 58. K applicationx rpm. Saving to elrepo release 7. Ks in 0s. 20. 17 0. MBs elrepo release 7. Step 2 Install elrepo. Type the following yum command yum install elrepo release 7. Sample outputs Fig. Installing ELRepo for my Cent. OS 7 box. Step 3 List all packages in the yum elrepo repositories available to be installed. Type the following yum command to list all packages in elrepo kernel repo yum list available disablerepo enablerepoelrepo kernel. Sample outputs elrepo kernel repos. Available Packages. Available Packages. Where,Long term support kernel package name is kernel lt version 4. Mainline stable kernel package name is kernel ml version 4. Step 4 Install kernel version. To install long term support kernel, run yum disablerepo enablerepoelrepo kernel install kernel lt. To install mainline stable kernel, run yum disablerepo enablerepoelrepo kernel install kernel ml. Sample outputs Fig. Installing mainline stable Linux kernel for my Cent. OS 7 box. Step 5 Boot into new kernel. Type the following reboot command to reboot the Linux box reboot. OR shutdown r now. OR shutdown r 0. Step 6 Verification. Find out the current Linux kernel version using any one of the following command cat procversion. Sample outputs Linux version 4. Red Hat 4. 8. 5 1. GCC 1 SMP Sat Jun 2. EDT 2. 01. 7Or use old good uname command uname mrs. Sample outputs Linux 4. Conclusion. I strongly suggest that if you need the latest kernel for hardware supportdrivers, get Fedora Linux latest. My professional opinion is you only use distro supplied kernel for security reasons on server or cloud computing. Readonly File System. However, Linux or Cent. OS does not restrict your freedom. Another option is to compile Linux kernel from the source code itself. And there you have it, the latest version of mainline Linux kernel up and running on a Cent. OS Linux 7. x. For more info see the project home page here. Posted by Vivek Gite. The author is the creator of nix. Craft and a seasoned sysadmin and a trainer for the Linux operating systemUnix shell scripting. He has worked with global clients and in various industries, including IT, education, defense and space research, and the nonprofit sector. Follow him on Twitter, Facebook, Google. Install your own local Repo server on Cent. OS 7. This post is for installing your own Linux repository server, running on Cent. OS 7 to host Cent. OS 7 repos. Additional EL repos Cent. OS 56, RHEL, Scientific Linux, etc are definitely possible to store here, as well as a Debian based repos Debian, Ubuntu, etc, though not quite as easy. Thus, I will be focusing only on Cent. OS 7 with this guide. In short, we will be using createrepo to generate our repository metadata, nginx to serve the files over HTTP, and using rsync to automatically pull packages from a public repo server. From there, we only have to update the baseurls of the repo files on our Cent. OS 7 client servers, and profit In my setup I have SELinux disabled sed i etcselinuxconfig r e sSELINUX. SELINUXdisabledg. If you disable selinux or firewalld, you do so at your own risk. It is not advisable to do either if your server is directly accessible on the internet this one should not be, so please do so at your own risk At the bottom of this post Ive included the simple rules needed for firewalld on a Cent. OS 7. 2 minimal install, you will need to install firewalld as firewalld is no longer included in the Cent. OS 7 default minimal install. Lets Get Started Base and Update Repos. EPEL Repo. createrepo varwwwhtmlreposcentos7osx. Initialize Cent. OS Base Repo. Initialize Cent. OS Update Repo. Initialize EPEL 7 Repo. This is just a basic nginx config, that will allow for directory browsing from a web browser. Feel free to add any additional parameters youd like, such as errorpage. In this step we will clone done all the available packages and files from an existing repo mirror. The mirror I am using for Cent. OS Base repos is from cisp. I have found to be reliable and fast. For EPEL, I am using rit. Feel free to use any other mirror youd like. You can find a list of all the Cent. OS repo mirros here. Each of these commands may take up to an hour or more to run, based on your internet download speed. I suggest opening 3 terminals and running all 3 at the same time, and walk away for about 3. Cent. OS7osx. 866. Cent. OS Base Repo. Cent. OS7updatesx. Cent. OS Update Repo. EPEL 7 Repo. Once all 3 commands have run, you should have several thousand packages in your repo directories. Next we need to update the repo metadata by running createrepo update varwwwhtmlreposcentos7osx. Cent. OS Base Repo. Cent. OS Update Repo. EPEL 7 Repo. At this point, we now have a work repository What good is a repo if its not kept up to date We simple need to create a few crontab entries to run these commands to ensure we are pulling any new packages and updating the metadata. I choose to do it once a day, in the early morning. You can change the cron rules to run it whenever. I give 1h 1. 5m between each rsync pull, just to make sure one completes before the next starts not that that really matters. Here are my rules crontab e. Cent. OS7osx. 866. Cent. OS7updatesx. As you can see, I am updating Cent. OS Base Repo at 1 1. Cent. OS Update Repo at 2 3. EPEL 7 Repo at 3 4. Finally, I am updating all 3 repos metadata at 5 0. Should have more than enough time for each command to run and finish before the next starts. Now that our local repo mirror is set up and running, we just need to update our Cent. OS 7 clients to point to these repos and well be done. To do this, we need to edit the. Cent. OS Base. repo basenameCent. OS releasever Basebaseurlhttp repo. UPDATE repo. domain. TO YOUR NEW REPO SERVERS URLmirrorlisthttp mirrorlist. RPM GPG KEY Cent. OS 7released updatesupdatenameCent. OS releasever Updatesbaseurlhttp repo. UPDATE repo. domain. TO YOUR NEW REPO SERVERS URLmirrorlisthttp mirrorlist. RPM GPG KEY Cent. OS 7 vi etcyum repos. Extra Packages for Enterprise Linux 7 basearchbaseurlhttp repo. UPDATE repo. domain. TO YOUR NEW REPO SERVERS URLbaseurlhttp download. RPM GPG KEY EPEL 7 Repo files are now updated. Lets clean up our local yum cache, and make sure everything is working. As long as yum repolist runs and you get no errors, that means everything is working as expected Enable services. Ensure firewalld is running. System reboot. And were done In case you are curious what the difference between Cent. OS Base and Cent. OS Update Repos are, I didnt know either for the longest time. The current Base Repo is a direct copy of a certain release, so it contains all the files located on the iso image you download when you download Cent. OS full. The Update Repo contains any package updates since the last minor release of Cent. OS was released. For example, the current Base Repo at the time of writing this is for Cent. OS 7. 2, and the Updates Repo contains any package updates since Cent. OS 7. 2 was finalized. Hegre Flora And Alex. Once Cent. OS 7. 3 is release, any packages listed in the Update Repo will move to the Base Repo, and the process starts again. At least, thats the way I understand it.