RHEL articles

17 posts

RHEL

How to Install RHEL 8 | RHEL latest Version | RHEL 8 Hello World

16 May 2019·1 min read

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...

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RHEL

How to Install RedMine on CentOS 7

29 January 2018·3 min readArchive

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...

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RHEL

Ubuntu Vs RHEL CentOS

21 January 2018·1 min readArchive

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...

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RHEL

CentOS RHEL – reboot after kernel update or if reboot needed

5 December 2017·1 min readArchive

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...

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RHEL

IPA wait_for_open_ports: localhost [8080, 8443] timeout 300

13 September 2017·1 min readArchive

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...

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RHEL

IPA registration error – libcurl failed to execute the HTTP POST transaction. SSL connect error

7 June 2017·1 min readArchive

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...

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RHEL

The disk contains an unclean file system (0, 0). NTFS error on Linux

23 February 2017·1 min readArchive

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...

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RHEL

OpenVPN with CSF firewall rules

2 February 2017·1 min readArchive

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...

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RHEL

VSFTP chroot jail users – Limit FTP users access to home directory

1 February 2017·1 min readArchive

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...

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RHEL

Disable SU access for sudo users

11 January 2017·1 min readArchive

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...

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RHEL

How to log all sudo commands

11 January 2017·1 min readArchive

Sometimes it’s necessary to log all the sudo commands run in your environment. Let”s see how to achieve this. Edit the sudoers file by running visudo visudo Add the below line to the Defaults section...

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RHEL

httpd.service: main process exited kill: cannot find process “”

15 September 2016·1 min readArchive

Today apache was stuck with the below error and it was not starting at all. Sep 15 06:18:24 server.example.com systemd[1]: Starting The Apache HTTP Server… Sep 15 06:18:24 server.example.com...

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