calicoctl node checksystem

This section describes the calicoctl node checksystem command.

Read the calicoctl Overview for a full list of calicoctl commands.

Displaying the help text for 'calicoctl node checksystem' command

Run calicoctl node checksystem --help to display the following help menu for the command.

Verify that this host meets the system requirements to run a Calico node instance.

Usage:
  calicoctl node checksystem [flags]

Examples:
  calicoctl node checksystem

Flags:
  -h, --help                   help for checksystem
  -f, --kernel-config string   Override the Kernel config file location.

Global Flags:
      --allow-version-mismatch   Allow client and cluster versions mismatch
      --context string           The name of the kubeconfig context to use
  -l, --log-level string         Set the log level (panic, fatal, error, warn, info, debug) (default "panic")

Procedure

These are the steps that calicoctl takes to pinpoint what modules are available in your system.

1. calicoctl checks the kernel version.
2. By executing lsmod it tries to find out what modules are enabled.
3. Modules without a match in step 2 will be checked against /lib/modules/<YOUR_KERNEL_VERSION>/modules.dep file.
4. Modules without a match in step 2 & 3 will be checked against /lib/modules/<YOUR_KERNEL_VERSION>/modules.builtin file.
5. Modules without a match in previous steps will be tested against kernelconfig file /usr/src/linux/.config.
6. Any remaining module will be tested against loaded iptables modules in /proc/net/ip_tables_matches.

Examples

calicoctl node checksystem

An example response follows.

xt_conntrack                                            OK
xt_u32                                                  OK
WARNING: Unable to detect the xt_set module. Load with `modprobe xt_set`
WARNING: Unable to detect the ipip module. Load with `modprobe ipip`

It is possible to override the kernel-config file using --kernel-config argument. In this case calicoctl will try to resolve the modules against the provided file and skip the default locations.

calicoctl node checksystem --kernel-config /root/MYKERNELFILE