I updated my desktop machine to Centos 7.4 and my desktop icons were suddenly huge! After a bit of plugging around I found the fix Find the application “dconf Editor” under Applications – System Tools * Drill down to org … Continue reading →
The upower cli tool will get you a large amount of information about power and batteries in your system. Install upower using the command yum -y install upower To enumerate the devices upower can get information about on your system … Continue reading →
Create a file named /etc/polkit-1/localauthority/50-local.d/50-org.libvirt-group-access.pkla and put the following lines in it [libvirt group Management Access] Identity=unix-group:libvirt Action=org.libvirt.unix.manage ResultAny=yes ResultInactive=yes ResultActive=yes Create a group name libvirt (if it does not already exist) groupadd libvirt Put each user who needs access … Continue reading →
The following is for working with the Cisco ASA with failover – where you have two ASA’s set up so that one will take over when one fails. This is not used for ISP failover. For that, see here. Force … Continue reading →
Using Firewall-cmd to check firewall current state If you want to verify the current state of firewall then you need to use –state option with firewall-cmd command to check that. As you can see from below output, firewalld is currently … Continue reading →
Intel has come out with a really nice small form factor computer call the NUC. It has 2 USB 2.0 ports and 4 USB 3.0 ports. It is 5.4 x 4.9 x 3.5 inches in size. Bluetooth, wifi and Gigibit … Continue reading →
Let’s Encrypt is a fantastic project put together by the non-profit Internet Security Research Group (ISRG). It is a flexible tool for setting up SSL certificates for your web sites. Installation To install on Rocky Linux 8 execute: yum -y install … Continue reading →
Cacti is a great tool and it permits you to set up for HTTP authentication (Web Basic Authentication). However, I have had a couple of configuration issues when setting up HTTP authentication and have needed to put Cacti back to … Continue reading →
Fix your logon prompt for when you are on the console of your Linux server (Centos 6 runlevel 3 or Centos 7 multi-user.target) so that it displays your current ip address Edit /etc/rc.d/rc.local and add the following lines to the end … Continue reading →
First – install telnet on Centos 7 yum -y install telnet-server Edit the file /usr/lib/systemd/system/telnet.socket The section [Socket] has by default [Socket] ListenStream=23 Change 23 to the desired port number. Then systemctl enable telnet.socket systemctl start telnet.socket Firewalld for Telnet … Continue reading →