Tuesday, September 14, 2021

Welcome to our guide on How to Install Cockpit on Ubuntu 20.04/18.04/16.04 & Debian 10/9. Linux Cockpit is an Open Source, lightweight, web-based Server/system administration tool originally written for RHEL family Linux distributions. Cockpit interacts directly with the operating system from a real Linux session in a browser with easy to use interface.

Features of Cockpit

Cockpit allows you to perform:

Service Management – Start, stop, restart, reload, disable, enable, mask e.t.c
User Account Management – Add users, delete, Lock, assign Administrator role, set password, force password change, Add Public SSH keys e.t.c.
Firewall Management
Cockpit Container management
SELinux Policy management
Journal v2
iSCSI Initiator configurations
SOS-reporting
NFS Client setup
Configure OpenConnect VPN Server
Privileged Actions – Shutdown, Restart system
Join Machine to Domain
Hardware Device Management
System Updates for dnf, yum, apt hosts
Manage the Kubernetes Node

Install Cockpit on Ubuntu 20.04/18.04

Cockpit is available on Ubuntu official repositories. The installation is as simple as running a one-liner set of commands:

sudo apt update
sudo apt install cockpit

Install Cockpit on Debian 10 / Debian 9

Install Cockpit on Debian 10:

sudo apt update
sudo apt install cockpit

Install Cockpit on Debian 9:

Cockpit is included in Debian 9 (Stretch) backports. Enable backports repository on Debian 9 by running the command:

echo 'deb http://deb.debian.org/debian stretch-backports main' | sudo tee /etc/apt/sources.list.d/backports.list

Then update your package list and install cockpit:

sudo apt update
sudo apt install cockpit

Accessing cockpit web interface

Cockpit service should be automatically started after the installation. You can confirm if service is running using:

$ systemctl status cockpit

If the service is not running, start it by running the following command in your terminal:

sudo systemctl start cockpit

Cockpit service binds to port 9090 once it is started. Access its web interface by opening http://[ServerIP|Hostname]:9090.

If you have a running UFW firewall service, allow port 9090.

sudo ufw allow 9090

Ignore Invalid Certificate Warning.

Ubuntu Login Page:

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Thursday, August 19, 2021

install xrdp for remote desktop on friendlyarm ubuntu version, focal 20.04.

Must translate thru google translate. Translated version copied and pasted here.

XRDP with xorg doesn't work, probably due to missing hardware to frame buffer. Seems to rig to use vnc remote desktop method to remote the desktop.

Installed xfce4 for window manager

snapshot copied and saved 8/19/2021

https://wiki.friendlyarm.com/wiki/index.php/How_to_setup_XRDP_server_on_NanoPC-T4

How to setup XRDP server on NanoPC-T4

View Chinese

1 Step1: Install XRDP remote desktop

Enter the following command to install:

sudo apt install  -y tigervnc-standalone-server xrdp
 sudo  sed  -e  's/^new_cursors=true/new_cursors=false/g'  -i  / etc / xrdp / xrdp.ini

2 Step2: Edit /etc/xrdp/startwm.sh

Edit /etc/xrdp/startwm.sh:

sudo  vim  / etc / xrdp / startwm.sh

Comment out the last two lines in the file (comment method: add # sign at the beginning of the line), as shown below:

# test -x /etc/X11/Xsession && exec /etc/X11/Xsession 
# exec /bin/sh /etc/X11/Xsession

Then add the following at the end of the file:

lxsession -s LXDE -e LXDE

3 Step3: Edit /etc/xrdp/xrdp.ini

Edit /etc/xrdp/xrdp.ini

sudo  vim  / etc / xrdp / xrdp.ini

Scroll to the address of "; Session types", delete all other session types, only [Xvnc] is left:

;
; Session types
;
; Some session types such as Xorg, X11rdp and Xvnc start a display server.
; Startup command-line parameters for the display server are configured
; in sesman.ini. See and configure also sesman.ini.
 [ Xvnc ] 
name =Xvnc
 lib =libvnc.so
 username =ask
 password =ask
 ip =127.0.0.1
 port =- 1 
#xserverbpp=24 
#delay_ms=2000

4 Step4: Disable light-locker

Since light-locker will not work properly in the XRDP environment, we need to disable it in the XRDP environment. In order not to affect the real environment, here we use a packaging script to solve the problem. First, rename the original file:

the sudo  CP  / usr / bin / Light-Locker / usr / bin / Light-locker.orig
 the sudo  RM  / usr / bin / Light-Locker

Create another script to call it, and use the editor to create a file /usr/bin/light-locker with the following content:

#!/bin/sh
 
# The light-locker uses XDG_SESSION_PATH provided by lightdm. 
if  [  !  -Z  " \$ {XDG_SESSION_PATH}"  ] ; then 
  / usr / bin / light-locker.orig
 else 
  # Disable light-locker in XRDP. 
  true 
fi 
EOF

Give the script executable permissions:

sudo  chmod  755  / usr / bin / light-locker

5 Step5: Start xrdp service

sudo systemctl enable xrdp
 sudo systemctl restart xrdp

6 Step6: Test the remote desktop connection

Use the Microsoft Remote Desktop client to create a new connection, the address is the IP address of the development board, and the user name and password are pi. In order to get a better experience, the resolution is recommended to be set to 1280x800, and the color depth is 24 bits. The settings are as shown in the figure below. Shown:

After the connection is successful, as shown in the figure below:

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Friday, July 9, 2021

counting and finding files with find command

find . -print|grep 'jpg\|png\|mp4\|flv\|gif\|mpg'|wc

Wednesday, June 30, 2021

Sample landing page

This is a sample landing page for a blog entry to discuss items of interest.

comments can be left with the comments section on this asking questions.

Should have a static link as well to this page.

A label is applied which would show up in any page display allowing labels, "sample landing page"

Jim's Notes

Tuesday, September 14, 2021

Odroid XU4 headless setup

Sunday, September 12, 2021

Raspberry Pi USB carrier adapter OTG

Wednesday, September 8, 2021

Install Xrdp on Ubuntu 20.04 LTS

Friday, August 20, 2021

Install cockpit on Debian 9, Ubuntu 20.04 (or 18.0x)

Install Cockpit on Ubuntu 20.04/18.04/19.04 & Debian 10/9