To install megtools (command line utilities for Mega.nz), in your raspberry with ubuntu installed follow the steps below (thanks to the instructions from here: https://www.instructables.com/id/Descarga-archivos-de-Mega-con-Raspberry-Pi/)
Install the necessary packages
sudo apt - get - y install build - essential libglib2 . 0 - dev libssl - dev libcurl4 - openssl - dev libgirepository1 . 0 - dev
You may also need to add some additional packages if there is an error about the documentation.
Get the latest source code from https://megatools.megous.com
wget https : //megatools.megous.com/builds/megatools-1.10.3.tar.gz
tar xvfz megatools - 1.10.3.tar.gz cd megatools - 1.10.3 . / configure make sudo make install sudo ldconfig
Add your Mega account credentials in ~/.megarc like:
[ Login ] Username = my_mega @ email Password = mypassword
use the mega tools commands (megacopy, megals, megaget etc.
To install the latest/current versions of erlang (23.0.2) and elixir (1.10.3), follow the instructions below:
Install asdf ( full instructions
git clone https : //github.com/asdf-vm/asdf.git ~/.asdf --branch v0.7.8
Add the following two lines in your ~/.bashrc file:
# Add asdf version manager . $ HOME / . asdf / asdf . sh . $ HOME / . asdf / completions / asdf . bash
Reload/Source your bash file with
Install the erlang plugin
If you get the following warnings:
. . . Extracting source code Building Erlang / OTP 23.0.2 ( asdf_23 . 0.2 ) , please wait . . . WARNING : It appears that a required development package 'libssl-dev' is not installed . WARNING : It appears that a required development package 'automake' is not installed . WARNING : It appears that a required development package 'autoconf' is not installed . WARNING : It appears that a required development package 'libncurses5-dev' is not installed . Configure failed . . . .
Install the missing packages:
sudo apt install libssl - dev automake autoconf libncurses5 - dev
Install latest erlang version:
asdf install erlang latest . . . Erlang / OTP 23.0.2 ( asdf_23 . 0.2 ) has been successfully built . . .
Set it up globally (if you want):
asdf global erlang 23.0.2
Add elixir plugin:
Install latest elixir version (1.10.3):
asdf install elixir latest
Set it up globally:
asdf global elixir 1.10.3 - otp - 23
Finally you can also install the latest Phoenix version (1.5.3):
mix archive . install hex phx _new 1.5.3
After installing an image of the Ubuntu server on the Raspberry 4, the wifi is not automatically configured after the initial book.
In order to be able to use the WiFi follow the steps described below for setting up your wifi in your SD card, and then reboot your raspberry (make sure that the indentation in the yaml file is correct, and also your WiFi access point is enclosed in quotes):
To restart your X Window Server from the command line in linux, without affecting any non-graphical programs (but losing any unsaved information in your graphical user interface programs), you can use the following:
sudo systemctl restart display - manager
You are trying to set up kubernetes on your local machine but trying to use initialize it with kubeadmin init, returns the following error:
[ init ] Using Kubernetes version : v1 . 18.3 [ preflight ] Running pre - flight checks error execution phase preflight : [ preflight ] Some fatal errors occurred : [ ERROR Swap ] : running with swap on is not supported . Please disable swap [ preflight ] If you know what you are doing , you can make a check non - fatal with ` -- ignore - preflight - errors = . . . ` To see the stack trace of this error execute with -- v = 5 or higher Solution
Switch the swap to off (Ubuntu command below) and try again.
You would like to test worldPing (https://worldping.raintank.io/worldping/) in your local environment for evaluation purposes.
Install Grafana with docker as described here (https://grafana.com/docs/grafana/latest/installation/docker/) and give it a name (ie grafana) Login to the grafana container and install the worldPing plugin:
$ docker exec - it grafana / bin / bash bash - 5.0 $ grafana - cli plugins install raintank - worldping - app
Exit from the container and stop and start it
bash - 5.0 $ exit $ docker stop grafana $ docker start grafana
Login to your grafana installation on the browser (localhost:3000) and go to the section for the plugins to find worldPing To be able to enable it you will need an API key from Grafana Cloud, so create a free account (https://grafana.com/signup/starter/connect-account) Create an API key (Security – API Keys – Add API Key) Go back to Grafana web UI and add the API key so you can enable the worldPing. Add an endpoint to check and select the services to check (DNS, Ping, HTTP, HTTPS) Leave it running for a few minutes and check the dashboards afterwards. Remember to Disable if you want to go back to it again in the near future, or Destroy the endpoint if you do not need it anymore.
Trying to use the usual way of adding Gitlab’s key to the ssh agent, is not working in alpine image (but it works in debian/ubuntu), and you get the following error message:
- ssh-add <(echo "$GITLABCICD_PRIVATE_KEY")
/bin/sh: syntax error: unexpected "("
Try to use the following instead:
- echo "$GITLABCICD_PRIVATE_KEY" | ssh-add -
When you create a new AWS account the access to Billing for IAM users is not enabled by default.
In order to allow access you have to follow the steps below:
Login to your AWS account with your root user (email and password) Go to the top right drop down ‘My Account’ Find the section that is called ‘IAM User and Role Access to Billing information’, use ‘Edit’, tick the box ‘Enable access’ and then ‘Update’.
More information can be found in the Amazon’s help page
You would like to have a list of your subdomains for a specific domain (hosted zone), that are hosted in Amazon’s Route 53.
You can install the aws cli docker image from here
https://github.com/cgswong/docker-aws if you don’t want to install the aws cli in your computer.
You can afterwards start the container with:
docker run -it cgswong/aws:latest
Then configure it by running the following and adding your credentials and zone:
efe9881d4fd:/tmp# aws configure
AWS Access Key ID [None]: aws_access_key_id
AWS Secret Access Key [None]: aws_secret_access_key
Default region name [None]: eu-central-1
Default output format [None]:
Then run the first command to get a list of the hosted zones and get the id of the hosted zone you want to find the subdomains for:
3efe9881d4fd:/tmp# aws route53 list-hosted-zones
"Comment": "HostedZone created by Route53 Registrar",
Then pick the HOSTEDZONEID and run the following to get a list of subdomains for that domain:
3efe9881d4fd:/tmp# aws route53 list-resource-record-sets --hosted-zone="HOSTEDZONEID" | grep "Name" | uniq
You would like to have a list of IPs or MAC address for the device in your network
Use the ARP protocol’s command:
$ arp -a
dv1.home (192.168.1.102) at 48:xx:xx:xx:xx:xx [ether] on wlp4s0
dv2.home (192.168.1.127) at a4:xx:xx:xx:xx:xx [ether] on wlp4s0