https://vovaprivalov.medium.com/setup-minikube-on-virtualbox-7cba363ca3bc
Setup minikube on VirtualBox
Reply
Tag Archives: Ubuntu
Change Ubuntu Resolution in Hyper-V
WordPress on Kubernetes in Ubuntu
WordPress on Kubernetes in Ubuntu
based on:
https://github.com/bitnami/charts/tree/master/bitnami/wordpress/#installing-the-chart
https://vitux.com/install-and-deploy-kubernetes-on-ubuntu/
1) Install snapd
sudo apt update sudo apt install snapd
2) Install helm
sudo snap install helm --classic
3) Install and enable Docker
sudo apt install docker.io sudo systemctl enable docker
4) Add the Kubernetes signing key on both the nodes
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add
5) Add Xenial Kubernetes Repository
sudo apt-get install software-properties-common sudo apt-get update sudo apt-add-repository "deb http://apt.kubernetes.io/ kubernetes-xenial main"
6) Install Kubeadm
sudo apt install kubeadm
7) Disable swap memory – Kubernetes does not perform properly on a system that is using
swap memory sudo swapoff -a
8) Set hostname
sudo hostnamectl set-hostname master-node
9) Initialize Kubernetes on the master node
sudo kubeadm init --pod-network-cidr=10.244.0.0/16
10) To start using your cluster, you need to run the following as a regular user:
mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(id -g) $HOME/.kube/config
11) Then you can join any number of worker nodes by running the following on each as root:
kubeadm join 192.168.185.98:6443 --token 3fblch.ja2qp2uymppvd92n --discovery-token-ca-cert-hash sha256:77bef2579a7c22a3b8a55f94f70595f35112b406ac12a04f67e7a73e1a50e62b
12) Deploy a Pod Network through the master node
sudo kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
13) view the status of the network
kubectl get pods --all-namespaces
14) Install Bitnami WordPress (a help chart)
helm install my-blog bitnami/wordpress
15) Result
NAME: my-blog LAST DEPLOYED: Mon Apr 27 18:35:23 2020 NAMESPACE: default STATUS: deployed REVISION: 1 NOTES: ** Please be patient while the chart is being deployed **
To access your WordPress site from outside the cluster follow the steps below:
- Get the WordPress URL by running these commands: NOTE: It may take a few minutes for the LoadBalancer IP to be available.
Watch the status with: ‘kubectl get svc –namespace default -w my-blog-wordpress’ export SERVICE_IP=$(kubectl get svc –namespace default my-blog-wordpress –template “{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}”)
echo “WordPress URL: http://$SERVICE_IP/”
echo “WordPress Admin URL: http://$SERVICE_IP/admin” - Open a browser and access WordPress using the obtained URL.
- Login with the following credentials below to see your blog: echo Username: user
echo Password: $(kubectl get secret –namespace default my-blog-wordpress -o jsonpath=”{.data.wordpress-password}” | base64 –decode)
16) Uninstall
helm delete my-blog
Ubuntu 18.04 Runs on Windows 10 Hyper-V With Enhanced Session Mode … If You Do This
Letsencrypt + Certbot
Letsencrypt provides free SSL certificates
Certbot automates re-newal and installation of the certificates
Install Certbot:
$ sudo add-apt-repository ppa:certbot/certbot $ sudo apt-get update $ sudo apt-get install python-certbot-apache
Generate and install the certificate
$ certbot --apache
Generate the certificate only
$ certbot --apache certonly
Generate wildcard certificate
$ sudo certbot certonly --manual --preferred-challenges=dns --email yourname@yourdomain.com --server https://acme-v02.api.letsencrypt.org/directory --agree-tos -d *.yourdomain.com
Renewal
The Certbot packages on your system come with a cron job that will renew your certificates automatically before they expire. Since Let’s Encrypt certificates last for 90 days, it’s highly advisable to take advantage of this feature.
$ sudo certbot renew --apache
How To Watch Netflix on Ubuntu The Easy Way
I was trying to find a way to watch Netflix in Ubuntu 14.04 In the past you had to install Wine and Silverlight. Since Google Chrome 37 it should work natively. Still I was getting Error Code: M7063-1913
It turns out some libraries were messed up. Apparently the problem is fixed in 14.10 Alpha but I wanted to keep running the oficiall stable version.
I step by step instructions on how to get Netflix to work in Google chrome in Ubuntu 14.04 are available here:
Bluetooth headset in Ubuntu
After I installed Ubuntu 14.04.1 LTS I found that the Bluetooth drivers and utilities were already installed. I paired my Bluetooth headset Jabra BT620s without any problems. Unfortunately I could not make it to be the default device for playback or this was what I was trying to do similarly to the way you would do it in Windows. No matter what I was doing the sound kept coming from the computer’s speakers.
It took reading a lot of posts talking about other peoples problems with Bluetooth headsets and their solutions. I tried several of them and what worked for me was installing PulseAudio Volume Control from Software Center:
It allows you to specify the profile for your headset which by default is off. I set it to High Fidelity Playback (A2DP):
The last step is in sound settings to set the mode for the headset to match the profile you chose in the PulseAudio Volume Control:
That was all – no messing with configuration files or running commands in a terminal. I hope these steps work for you too.
Ubuntu on a stick – Installation
This is the first in a series of blog posts that talk about running Ubuntu from a USB flash drive.
Ubuntu (/u:’bu:ntu:/ oo-BOON-too) is a Debian-based Linux operating system. For more information about the operating system itself, please check Ubuntu (operating system) on Wikipedia.
Now that you know what Ubuntu is you may still wonder why anyone would like to run it from a USB flash drive. How about having a free full feature GUI operating system that comes with tons of free tools and applications that you can carry with you and run on any computer that has a USB port without the need to install anything? And it will even run on this 10-year old computer in your basement and will recognize all your devices and will install all the necessary drivers automatically. Not convinced yet? Well, I respect your right to do whatever you want with your time – go check what your friends are doing on Facebook or waste couple of hours on Minecraft. If on the other hand you are curious or stubborn enough to keep reading I will show you how to install Ubuntu on USB flash drive in few easy steps.
I will be doing this from Windows. I have 8GB USB flash drive and part of it will be used to host Ubuntu and the rest will be used for sharing files. In order to achieve this I need to partition the USB drive first. In Windows I use EaseUS Partition Master. Download it from here.
Install and run EaseUS Partition Master with the USB plugged in. We are going to create 3 partitions.
Partition 1 Type: Logical File System: FAT32 Size: 2GB Label: STORAGE
Partition 2 Type: Primary File System: FAT32 Size: 1GB Label: UBUNTULIVE
Partition 3 Type: Primary File System: EXT2 Size: 4.22GB (The rest of the space) Label: casper-rw
Press the “Apply” button to re-partition the USB drive. You should see something similar:
The first partition will be used for file sharing. It is FAT32 because this is the file system that most of the operating systems can read. You can use it under Windows and Linux. If you need more space you can make it bigger at the expense of the last partition (casper-rw).
The second partition is where we are going to install UBUNTU. 1GB is a perfect size. It has to be FAT32 and Primary. Make sure it is set to Active. Since Windows will only show one partition for a removable USB flash drive we need this partition setup as described in order to be accessible in Windows.
The third partition will be used to store any changes we make to Ubuntu – installing new applications, changing the desktop image, etc. EXT2 is a good choice for a file system when it comes to USB flash drive. EXT3 and EXT4 are newer and have some advantages but also come with excessive disk operations which is not desirable for a USB flash.
Now you need to download the Ubuntu ISO file. We want the desktop version. I am using the 64-bit but you should make sure your computer is 64-bit. Otherwise get the 32-bit version. At the time of writing this the latest available version is Ubuntu 14.04.1 LTS.
The next step is to install UBUNTU on the USB. There are several tools to do that and I had different results in the past. One that work well for me is Universal USB Installer. Download it.
Run the installer and on the selections page select Ubuntu from the drop-down, browse to the location you saved the ISO file and select the USB Flash Drive from the drop-down. Also use the slider to specify the Persistent file size. Do not slide it all the way to the right because it will complain there is no enough space. Just put the slider in the middle – the size of the file is not important since we are not going to use it at all. We are doing it just to make the installer to update some configuration files that tell the system to persist the changes. We will be using the third partition we created to persist all the changes we are making to our system:
Leave the installer to run and be patient. When it is ready you should see a message like this:
Click the “Close” button to finish. Go to the USB in file explorer and delete a file called casper-rw. This is the file that would keep all the changes normally. Since we have a dedicated partition we do not need it and have to delete it.
The last step will be to hide the UBUNTU partition and instead make the STORAGE partition the active one. Run the EaseUS Partition Master and make the STORAGE partition Primary and set it to Active:
As a result you will see a new drive labeled STORAGE in windows explorer which you can use to for storing files – music, pictures, etc.
Now it is time to boot from the USB. Depending on the computer you have you might have to change the boot order in your BIOS or if it supports a boot menu you can select the USB drive directly from there. Once the GUI loads try to change the desktop background and reboot again. You should see the new background you selected which confirms that the changes we make to the system are persisted between restarting the computer.
This is it! Hopefully it works for you. If you have any problems, please go back and make sure you followed all the steps. If you still have questions, please do not hesitate to ask.
Keep in mind that in general Ubuntu will run much slower from a USB flash drive than from a regular hard-drive. What the USB gives us is a system we can take with us and run on another computer. If you have a dedicated computer on which you would like to run Ubuntu it is much better to install it on your hard-drive. A good information on how to run Ubuntu alongside Windows can be found here: