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Create Local YUM Repository from Systemd Mounted DVD on RHEL 7

Posted on 04/12/2016 by Lisenet

We can mount DVDs/partitions using systemd.mount by writing a mount unit file. Continue reading →

Posted in Linux | Tagged CentOS, EX200, EX300, RHCE, RHCSA, RHEL, systemd | 14 Comments

Passed RHCE on RHEL 7

Posted on 16/08/2016 by Lisenet

My experience on RHCSA and RHCE exams. Continue reading →

Posted in Notes | Tagged EX200, EX300, RHCE, RHCSA | 106 Comments

Configure Host-based and User-based Security for the Service on RHEL 7

Posted on 01/08/2016 by Lisenet

Security for SSH, HTTP/S, DNS, NFS, SMB and SMTP. Continue reading →

Posted in Linux, Security | Tagged CentOS, EX300, RHCE, RHEL | 23 Comments

Setting up Time Synchronisation with Chrony on RHEL 7

Posted on 22/07/2016 by Lisenet

The chronyd service is the default service to synchronise time on RHEL 7. Continue reading →

Posted in Linux | Tagged CentOS, chronyd, EX300, RHCE, RHEL | 15 Comments

Configure Remote Logging on RHEL 7

Posted on 21/07/2016 by Lisenet

We are going to configure a remote log server and forward messages to it. Continue reading →

Posted in Linux, Monitoring | Tagged CentOS, EX300, RHCE, RHEL, rsyslog | 6 Comments

Setting up a Software Bridge on Top of a Teamed Device on RHEL 7

Posted on 14/07/2016 by Lisenet

We are going to setup a bridged network interface on top of a teamed link. Continue reading →

Posted in Linux, Networking | Tagged bridge, CentOS, EX300, RHCE, RHEL | 16 Comments

RHCE Sample Exam for RHEL 7

Posted on 26/06/2016 by Lisenet

This is a sample exam that I’ve created after finishing RHCE studies. It is to prepare for the RHCE exam based on RHEL 7, which I have yet to take.

[Update August 2016]: I have passed the RHCE exam. Continue reading →

Posted in Linux | Tagged CentOS, EX300, RHCE, RHEL | 239 Comments

Firewalld Rich and Direct Rules: Setting up RHEL 7 Server as a Router

Posted on 18/06/2016 by Lisenet

We are going to configure RHEL server as a router. Masquerading, port forwarding, rich and direct rules will be covered.  Continue reading →

Posted in Linux, Networking | Tagged CentOS, EX300, firewalld, RHCE, RHEL, rich rules | 69 Comments

Setting up a MariaDB Server with SELinux on RHEL 7

Posted on 16/06/2016 by Lisenet

We are going to install and configure a MariaDB server and create a simple database schema. MariaDB backup and restore procedures, as well as some common MariaDB errors, will be covered.  Continue reading →

Posted in Database, Linux | Tagged CentOS, EX300, MariaDB, RHCE, RHEL | 27 Comments

Setting up an OpenSSH Server with SELinux on RHEL 7

Posted on 09/06/2016 by Lisenet

We are going to configure a key-based SSH authentication, and allow sshd to bind to a non-default SSH port.  Continue reading →

Posted in Linux, SSH | Tagged CentOS, EX300, openssh, RHCE, RHEL | 16 Comments

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