Kubernetes

kubectl installation

$ curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"

minikube installation

$ curl -LO https://github.com/kubernetes/minikube/releases/latest/download/minikube-linux-amd64
$ sudo install minikube-linux-amd64 /usr/local/bin/minikube && rm minikube-linux-amd64
$ sudo ln -s /usr/local/bin/minikube-linux-amd64 /usr/local/bin/minikube
$ minikube start
$ minikube status
$ docker exec -ti 4913739dd389 sh
$ minikube ssh
$ less ~/.kube/config
$ kubectl get no -o wide

oc installation

$ wget https://github.com/openshift/okd/releases/download/4.5.0-0.okd-2020-07-14-153706-ga/openshift-client-linux-4.5.0-0.okd-2020-07-14-153706-ga.tar.gz
$ tar -xvf openshift-client-linux-4.5.0-0.okd-2020-07-14-153706-ga.tar.gz
$ sudo mv oc /usr/local/bin/
$ oc login

Docker

sudo apt update

sudo apt install apt-transport-https ca-certificates curl software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu bionic stable"

sudo apt update

apt-cache policy docker-ce

sudo apt install docker-ce

sudo systemctl status docker

sudo usermod -a -G docker user

su - user

docker run hello-world

docker ps

Windows

Delay when hold the key

To fix this, press Windows + R and then type "control keyboard" and press okay. A popup box opens named "Keyboard properties". Over there in the "speed" tab, make sure that the "Repeat delay" is all the way towards "short" and the "Repeat rate" is all the way towards "fast" and then click the apply and okay button.

This should solve the slow backspace issue.

VirtualBox

How to install VM Guests

$ apt install bzip2 tar gcc make perl
$ ./VBoxLinuxAdditions.run
$ rcvboxadd setup
$ rcvboxadd reload
$ reboot

Dante

Install Dante

$ sudo apt update
$ sudo apt install dante-server
$  danted -v
$  sudo mv /etc/danted.conf /etc/danted.conf.bak
$  sudo vim /etc/danted.conf

logoutput: /var/log/socks.log
internal: eth0 port = 3128
external: eth0
clientmethod: none
socksmethod: username
user.privileged: root
user.notprivileged: nobody
client pass {
        from: 0.0.0.0/0 to: 0.0.0.0/0
        log: error connect disconnect
}
client block {
        from: 0.0.0.0/0 to: 0.0.0.0/0
        log: connect error
}
socks pass {
        from: 0.0.0.0/0 to: 0.0.0.0/0
        command: bind connect udpassociate
        log: error connect disconnect
        socksmethod: username
}
socks block {
        from: 0.0.0.0/0 to: 0.0.0.0/0
        log: connect error
}

$ sudo vim /lib/systemd/system/danted.service

[Unit]
Description=SOCKS (v4 and v5) proxy daemon (danted)
Documentation=man:danted(8) man:danted.conf(5)
After=network.target
[Service]
Type=simple
PIDFile=/run/danted.pid
ExecStart=/usr/sbin/danted
ExecStartPre=/bin/sh -c ' \
        uid=`sed -n -e "s/[[:space:]]//g" -e "s/#.*//" -e "/^user\\.privileged/{s/[^:]*://p;q;}" /etc/danted.conf`; \
        if [ -n "$uid" ]; then \
                touch /var/run/danted.pid; \
                chown $uid /var/run/danted.pid; \
        fi \
        '
PrivateTmp=yes
InaccessibleDirectories=/boot /home /media /mnt /opt /root
ReadOnlyDirectories=/bin /etc /lib -/lib64 /sbin /usr /var
DeviceAllow=/dev/null rw
ReadWriteDirectories=/var/log
[Install]
WantedBy=multi-user.target

$ systemctl daemon-reload
$ sudo systemctl status danted

$ sudo systemctl restart danted

Check Port

$ apt install net-tools

$ netstat -an | grep 3128

Log

$ less /var/log/socks.log
$ cat  /etc/danted.conf

Create User

$ sudo useradd -r -s /bin/false dante

$ passwd dante

Check public IP address

$ curl ipinfo.io/ip
$ curl icanhazip.com
$ curl -4 icanhazip.com
$ curl ifconfig.me
$ curl api.ipify.org
$ curl bot.whatismyipaddress.com
$ curl ipecho.net/plain

Check public IP address via Proxy

$ curl -v -x socks5://dante:password@server_ip:3128 ipinfo.io/ip