Customizing Flatcar

Guides and examples on typical customizations done on Flatcar instances. Including managing users, the DNS configuration, kernel modules, network parameters and more.

Adding users

How to create additional user accounts, either manually or with container linux configs.

Configuring date and time zone

How to configure date, timezone and time synchronization.

DNS Configuration

How DNS resolution works and how to setup local DNS caching.

Kernel modules and other settings

How to configure kernel modules, sysctl parameters, and other common Flatcar settings.

Network configuration with networkd

How to setup static networking, turn on/off ipv4/ipv6, and debugging tips.

Customizing the etcd unit

How to setup etcd to use client certificates.

Tuning Flatcar Container Linux power management

How to choose the CPU governor to use.