_netdev

(I tried this case study on Almalinux 9 and Almalinux8)

CASE STUDY: ROUTING ISSUE

 

CASE STUDY:  ROUTING ISSUE 

How to install wordpress via docker?

 How to install wordpress via docker?

my first docker file

My first docker file

virtulabox on Debian 12

virtulabox on Debian 12

 

kernel parameters

 Why use /etc/sysctl.conf?

we use for some kernel parameters:  (for example net.ipv4.ip.forward)


- in /proc/sys/net/ivp4/ip_forward is "live kernel data"

It's not necessary explain each command  (sysctl -p = p = load parameters from file)

[root@Mr ~]# cat /proc/sys/net/ipv4/ip_forward
0
[root@Mr ~]# vi /etc/sysctl.conf

[root@Mr ~]# cat /etc/sysctl.conf | grep -i ipv4
net.ipv4.ip_forward=1
[root@Mr ~]#



[root@Mr ~]# sysctl -p
net.ipv4.ip_forward = 1
[root@Mr ~]# cat /proc/sys/net/ipv4/ip_forward
1
[root@Mr ~]#

more: https://www.kernel.org/doc/html/v4.14/admin-guide/kernel-parameters.html

chmod ug+s

 How to use write set uid or set gid? 

Selinux and fcontext

 fcontext command: 

when you use selinux policy, you work with tool fcontext

how to check:

(for example: you have to change the apache directory:)

Problem with virt-manager (install)

I tried install virt-manager on Redhat. But I had a problem. 

pvcreate not found

 when you have a problem with command pvcreate: 

 

How to install VNC on Debian 12?

 It's easy! only click, click and dpkg ;-) 

Zoom on Debian 12

 How to install zoom on Debian 12? 

Mac address problem with ssh connetion (Ubuntu 20.04)

 Problem ssh hello@server -- not running

How to install KVM on Debian 12

How to install KVM on Debian 12?