crypto-k8s

Crypto Wallets on Kubernetes

Development Environment

• MacBook Pro (16gb ram)
• 4 x Atomic Pi (x86 Intel, 2gb ram, 32gb ssd)
• Raspberry Pi 4 NFS Server (4gb ram, 1tb ssd)
• k3s
• MetalLB
• Skaffold
• VS Code

Index

1. Prepare development environment.
2. Install NFS server.
3. Install k3s cluster.
4. Configure MetalLB.
5. Deploy crypto wallets.
6. Deploy block explorers.*
7. Deploy web wallets.*

* = Incomplete or Not Started

1. Prepare development environment.

A. Configure Atomic Pi's for k3s.

• OS: Atomic Pi Pre-loaded - https://www.digital-loggers.com/api_faqs.html#OriginalOS
• Give each atomic pi a distinct hostname

sudo nano /etc/hostname

• Disable Swap
• Set Static IP

sudo nano /etc/dhcpcd.conf

• Add the following to the end of file, editing to fit your needs.

interface eth0
static ip_address=192.168.0.87/24
static routers=192.168.0.1
statis domain_name_servers=75.75.75.75

• https://raspberrypi.stackexchange.com/questions/68477/static-ip-configuration-in-dhcpcd-conf-ignored

B. Add host entries to /user/username/.ssh/config.

• Example ssh config file located on MacBook Pro:

# example atomic pi ssh config
# example path: /user/username/.ssh/config
Host atomic
  HostName atomic.local
  Port 22
  User atomicpi
  IdentityFile ~/.ssh/id_openvpn

Host atomic2
      HostName atomic2.local
      Port 22
      User atomicpi
      IdentityFile ~/.ssh/id_openvpn

Host atomic3
      HostName atomic3.local
      Port 22
      User atomicpi
      IdentityFile ~/.ssh/id_openvpn

Host atomic4
      HostName atomic4.local
      Port 22
      User atomicpi
      IdentityFile ~/.ssh/id_rsa

C. Install Ansible and skaffold on MacBook Pro

brew install ansible skaffold

• More Atomic Pi resources
  • http://www.hydrogen18.com/blog/first-hour-with-the-atomic-pi.html

2. Install NFS server.

A. Update Raspberry Pi 4 and upgrade.

sudo apt update && sudo apt upgrade -y

B. Install the NFS server packages.

sudo apt-get install nfs-kernel-server portmap nfs-common

C. Create the NFS folder for sharing.

export MOUNT=/media
mkdir -p $MOUNT/nfs && \
sudo chmod -R 777 $MOUNT/nfs
sudo chown nobody:nogroup $MOUNT/nfs

D. Add share folder to /etc/exports.

sudo echo -e "$MOUNT/nfs 192.168.1.0/24(rw,sync,no_subtree_check,insecure,no_root_squash)" >> /etc/exports

E. Reset exports.

sudo exportfs -a

F. Restart the NFS service.

sudo systemctl restart nfs-kernel-server

3. Install k3s cluster.

A. Use Ansible playbook.

• Download the latest playbook

git clone https://github.com/boyroywax/crypto-k8s

B. Configure the playbook.

• Add your master and nodes to hosts.ini, use the Host name from the ssh config file.

# ansible-k3s-atomicpi/hosts.ini
[master]
atomic

[node]
atomic2
atomic3
atomic4

[k3s-cluster:children]
master
node

• Edit group_vars/all.yml. Pay attention to the IP of your master.
  Full_clean_install deletes all previous k3s files for a fresh install.
  The file is commented with the variables description.

C. Run the Ansible playbook. *

make

D. K3s config file located at ansible-k3s-atomic/files/k3s.yml

export KUBECONFIG=$PWD/ansible-k3s-atomic/files/k3s.yml
kubectl get nodes # test by checking for nodes

4. Configure MetalLB

A. Edit the IP address range in config.yaml.

B. Run the run_metal.sh script.

./run_metal.sh

5. Deploy crypto wallets.

A. Deploy with scripts.

• Create crypto namespace.

kubectl create ns crypto

• Run deploy_all.sh script.

./deploy_all.sh

• Clean Up: Remove crypto wallets.

./delete_all.sh

• Getinfo from all the running wallets.

./getinfo_all.sh

B. Deploy with skaffold.

• Individually start a wallet

cd wallet-docker/coinname-wallet-docker
skaffold run --tail

C. Deploy with Helm - NOT COMPLETE