RHEL was recently released, it has a lot of new features and cockpit software for managing the OS is coming by default with the Operating System. To download RHEL, you need a Red Hat login and valid subscription. You can also activate the trial version to download it. The best way to test it is …
How to Install RHEL 8 | RHEL latest Version | RHEL 8 Hello World Read More »
Install Software Collections yum -y install yum-plugin-priorities Add [priority=1] to official repository sed -i -e “s/\]$/\]\npriority=1/g” /etc/yum.repos.d/CentOS-Base.repo yum -y install epel-release Add [priority=5] to the EPEL repo sed -i -e “s/\]$/\]\npriority=5/g” /etc/yum.repos.d/epel.repo Add CentOS SCLo Software collections Repository. [root@aws ~]# yum -y install centos-release-scl-rh centos-release-scl Add [priority=10] to the SCL repository [root@aws ~]# sed -i …
Ubuntu Made for Home, SMB and Development use. Ubuntu is derived from Debian, you can enjoy new version and features of software packages but a high chance for bugs and security issues. Security updates are not backported. Ie you have to jump to the latest version of the package to get the security fix. An …
Yum-Cron Yum-cron is used to update the server automatically. This service will update the server with all the packages or only the security patches as configured on /etc/yum/yum-cron.conf But, the yum-cron lack in reboot feature. If any packages, say kernel, glibc or gcc require a reboot of the server then we have to do the reboot manually. …
CentOS RHEL – reboot after kernel update or if reboot needed Read More »
Issue: IPA wait_for_open_ports: localhost [8080, 8443] timeout 300 Today we were updating the server with yum update on our IPA server. The yum update finished successfully, but the IPA was not starting after the upgrade. the ipactl restart was also throwing an error. The web interface came up after the server restart but it was …
IPA wait_for_open_ports: localhost [8080, 8443] timeout 300 Read More »
Today we were trying to join RHEL-6 clients to our new IPA server. Most of the servers got registered and very few RHEL6 systems were failing to join. We ran the ipa-client-install with -d option for debugging and we got the below output. 2017-05-24T09:39:46Z DEBUG stderr=libcurl failed to execute the HTTP POST transaction. SSL connect …
Issue You are trying to mount an NTFS partition and the console is throwing the below error. Let’s see how to fix this. The disk contains an unclean file system (0, 0). Metadata kept in Windows cache, refused to mount. Failed to mount ‘/dev/sda3’: Operation not permitted The NTFS partition is in an unsafe state. …
The disk contains an unclean file system (0, 0). NTFS error on Linux Read More »
We are a big fan of OpenVPN when it comes to security. Many organizations have already switched to OpenVPN from PPTP etc. NixVPN is my favorite VPN software to host it on a standalone instance. But what if, if you already have a server protected with CSF firewall, and you want to install OpenVPN by …
Lets see how we can configure a secure FTP server on CentOS RHEL 6 / 7 First, you need to install the vsftp package on your server yum install -y vsftpd Once installed, lets start editing the configuration file, vim /etc/vsftpd/vsftpd.conf Line #12 disable anonymous FTP access, with the below configuration change. anonymous_enable=NO Chroot / Jail FTP …
VSFTP chroot jail users – Limit FTP users access to home directory Read More »
Some times you need to disable sudo su – access on your environment so that the users will use sudo command always and they will not switch to any other users account unnecessarily Lets see how to do it Edit the /etc/suoders by running visudo visudo Add the below Command Alias Cmnd_Alias BLOCKSU = /bin/su …
