• K3s installation on a Raspberry Pi

  4 min read

  
  

  To install k3s on a Raspberry Pi looks quite straight forward but it has it's nuisances.

  Installing k3s should be a single line command:

  # curl -sfL https://get.k3s.io | sh -
  [INFO]  Finding release for channel stable
  [INFO]  Using v1.18.9+k3s1 as release
  [INFO]  Downloading hash https://github.com/rancher/k3s/releases/download/v1.18.9+k3s1/sha256sum-arm.txt
  [INFO]  Downloading binary https://github.com/rancher/k3s/releases/download/v1.18.9+k3s1/k3s-armhf
  [INFO]  Verifying binary download
  [INFO]  Installing k3s to /usr/local/bin/k3s
  [INFO]  Creating /usr/local/bin/kubectl symlink to k3s
  [INFO]  Creating /usr/local/bin/crictl symlink to k3s
  [INFO]  Skipping /usr/local/bin/ctr symlink to k3s, command exists in PATH at /usr/bin/ctr
  [INFO]  Creating killall script /usr/local/bin/k3s-killall.sh
  [INFO]  Creating uninstall script /usr/local/bin/k3s-uninstall.sh
  [INFO]  env: Creating environment file /etc/systemd/system/k3s.service.env
  [INFO]  systemd: Creating service file /etc/systemd/system/k3s.service
  [INFO]  systemd: Enabling k3s unit
  Created symlink /etc/systemd/system/multi-user.target.wants/k3s.service → /etc/systemd/system/k3s.service.
  [INFO]  systemd: Starting k3s
  

  20/12/2020

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• MySQL: Your password does not satisfy the current policy requirements

  2 min read

  Using the validate_password plugin we can define minimum security requirements for MySQL passwords:

  mysql> GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, REFERENCES, INDEX, ALTER ON `dbdemo`.* TO 'demouser'@'%' identified by 'demopassword';
  ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
  mysql> GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, REFERENCES, INDEX, ALTER ON `dbdemo`.* TO 'demouser'@'1.2.3.4' identified by 'demopassword';
  ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
  

  Obviously for certain environments this plugin can be problematic so we may want to disable it.

  19/03/2019

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