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Dell just released a new BIOS firmware of the Latitude 7400 series. This firmware was released on 23 Nov 2020. Fixes: Modified the default settings of the Intel Rapid Storage Technology driver. Firmware updates to address the Intel Technical Advisory INTEL-TA-00391 (CVE-2020-8753, CVE-2020-8745, CVE-2020-8705, CVE-2020-8757, CVE-2020-8756, CVE-2020-8760, CVE-2020-8751, CVE-2020-8754, CVE-2020-8747, CVE-2020-8746, CVE-2020-8749 CVE-2020-8752, CVE-2020-12303, CVE-2020-12355, and CVE-2020-12356). Firmware updates to address the Intel Security Advisory INTEL-SA-00358 (CVE-2020-0587, CVE-2020-0591, CVE-2020-0592, and CVE-2020-0593)....

I need to have an iSCSI storage to be used by my oVirt lab. The last time I had to create an iSCSI target was during the preparation of the RHCE 7 exam. Therefore, I think this is an opportunity to practice doing this again. First, install the required package. Then enable the target service, otherwise the target won’t work on the next reboot. [root@utility ~]# dnf install targetcli -y [root@utility ~]# systemctl enable target Run the targetcli command to create an iSCSI target/storage using the storage block (/dev/mapper/data_iscsi LVM volume)....

This is my note about installing FreeIPA on a CentOS 8 machine. It’s a bit different from the FreeIPA’s installation on CentOS 7, and most importantly there was a problem I came across during the installation and how to fix it. Configure Static IP [root@utility ~]# nmcli con mod enp1s0 ipv4.addresses 172.25.250.8/24 \ > ipv4.method manual \ > ipv4.gateway 172.25.250.254 \ > ipv4.dns 172.25.252.1 \ > connection.autoconnect yes [root@utility ~]# nmcli con up enp1s0 Ensure the hostname of this server exists in /etc/hosts....

Today, one of my VMs needs to have its disk increased. I’m using qcow2 as the VM’s storage. Here is one way to expand the storage that it’s been proven to work very well for me. I already increased this VM’s disk to 30GiB once already, but it wasn’t enough. So here, let’s explode it to 50GiB. The name of the qcow2 file is hosta.qcow2. A friendly reminder that you should alway shave a backup before you perform any critical change such as this one....

One of the requirements to join an Identity Management Server (IdM) to an Active Directory (AD), a DNS delegation needs to be created on AD. With the Red Hat training for RH362, we were taught to use a command-line interface program called dnscmd on AD server. I personally found this command very cumbersome, and I think a better way is to do this DNS delegation using PowerShell cmdlet. I’ll demonstrate how to do DNS delegation both using dnscmd and PowerShell cmdlet....

Today I passed the Red Hat Identity Management exa, EX362, with the score of 233/300. The material used to prepare for the exam is the RH362 online course, provided Red Hat. At first I wasn’t sure if I should use of the 5 exam credits (as part of one-year training subscription), but it turned out that IdM/FreeIPA is useful and fun to learn. Here are some tips for this exam:...

I’m a fan of ZFS filesystem. It’s so good that I also use ZFS on most my Linux machines, though it’s painful at time when the ZFS kernel modules fail to compile. Why I like it so much comparing to other file system such as XFS, EXT4, BTRFS? ZFS allows me to quickly do snapshots and efficiently send snapshots over the network, and my nas runs FreeBSD which support ZFS natively....

You’ve been using Linux for a while, so you must have seen or used this command before: cat. It’s used to concatenate files and print on the standard output. But do you know there is another command spelled it reversed tac? tac is like cat, but print files in reverse. Here is an example which cat could be handy. I need to print out the last login user in reverse. (By the default, it prints the last login first....

Are you still rocking your X1 Carbon Gen 6 in 2020? Well, Lenovo just released a new BIOS firmware 1.50. Here are changes in this release: [Important updates] - Update includes a security fix. - Addresses CVE-2020-8696 and CVE-2020-8698. (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8696) (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8698) - Addresses CVE-2020-0587, CVE-2020-0588, CVE-2020-0590, CVE-2020-0591, CVE-2020-0592, and CVE-2020-0593. (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0587) (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0588) (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0590) (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0591) (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0592) (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0593) [New functions or enhancements] - Updated the CPU microcode. - Updated the Diagnostics module to version 04....

While creating a new user account on one my servers running FreeBSD 12, I encountered the following error: root@nas2:~ # adduser Username: devops Full name: Ansible Operator Uid (Leave empty for default): Login group [devops]: Login group is devops. Invite devops into other groups? []: Login class [default]: Shell (sh csh tcsh nologin) [sh]: Home directory [/home/devops]: Home directory permissions (Leave empty for default): Use password-based authentication? [yes]: no Lock out the account after creation?...