Old Site: https://sites.google.com/site/mwestart/
Remember posisiton for next time: Ctrl-F5
Add extra repos:
Extra Packages for Enterprise Linux (EPEL) - (See http://fedoraproject.org/wiki/EPEL)
nux-dextop - (see http://li.nux.ro/repos.html)
Keepassx2
Google Chrome
VLC
Remove un-needed.
Install printer. Extract and run this file as sudo. It will install the scanner and printer files. IP: socket://192.168.2.122:9100
Disable the extra repos in yum and Yumex for safety and stability.
Gparted or whatever in sudo not running : Simple workaround is to run "xhost +local:" in the terminal first.
gsettings set org.gnome.software download-updates false
systemctl disable dnf-makecache.service
systemctl disable dnf-makecache.timer
Add noatime
Like this: sudo vi /etc/fstab
[matt@lappy ~]$ cat /etc/fstab
/dev/mapper/fedora_lappy-root / ext4 defaults,noatime,x-systemd.device-timeout=0 1 1
UUID=c46c509e-2843-42d8-a391-514d19f98c2d /boot ext4 defaults 1 2
UUID=8AED-BE82 /boot/efi vfat umask=0077,shortname=winnt 0 2
/dev/mapper/fedora_lappy-home /home ext4 defaults,noatime,barrier=0,x-systemd.device-timeout=0 1 2
/dev/mapper/fedora_lappy-swap swap swap defaults,x-systemd.device-timeout=0 0 0
[matt@lappy ~]$
Then: mount -o remount /
There are also scenarios where a system has to deal with infrequent, bursty traffic to slow disk (like writing to a thumb drive ). In that case an approach might be to allow all that write I/O to be deposited in the cache so that the background flush operations can deal with it asynchronously over time:
Try:
sysctl -w vm.vfs_cache_pressure=50
sysctl -w vm.swappiness=1
Make Permanent On your /etc/sysctl.d/99-sysctl.conf file:
#vm.vfs_cache_pressure=50 # Maybe
vm.dirty_background_ratio = 5
vm.dirty_ratio = 80
vm.swappiness = 0
# Run“sudo sysctl -p” to reload the values.
https://lonesysadmin.net/2013/12/22/better-linux-disk-caching-performance-vm-dirty_ratio/
https://miguelmenendez.pro/en/articles/encrypt-usb-storage-device-linux-unified-key-setup-luks.html
cryptsetup luksOpen /dev/sda1 thevault
mount /dev/mapper/thevault /shared
umount /dev/mapper/thevault
cryptsetup luksClose thevault
Install KDE desktop on Minimal Install:
1. CentOS-7 "Minimal Install" (no Desktop System)
2. yum groupinstall "X Window System"
3. yum groupinstall "Fonts"
4. yum install kde-workspace
5. yum install gdm
6. unlink /etc/systemd/system/default.target
7. ln -sf /lib/systemd/system/graphical.target /etc/systemd/system/default.target
8. reboot OR (systemctl isolate graphical.target)
https://www.centos.org/forums/viewtopic.php?t=47825