preflight

type Checker ¶ added in v1.6.0

type Checker interface {
	Check() (warnings, errors []error)
}

Checker validates the state of the system to ensure kubeadm will be successful as often as possilble.

type DirAvailableCheck ¶

type DirAvailableCheck struct {
	Path string
}

DirAvailableCheck checks if the given directory either does not exist, or is empty.

func (dac DirAvailableCheck) Check() (warnings, errors []error)

type Error ¶ added in v1.6.0

type Error struct {
	Msg string
}

func (e *Error) Error() string

type ExternalEtcdVersionCheck ¶ added in v1.6.0

type ExternalEtcdVersionCheck struct {
	Etcd kubeadmapi.Etcd
}

ExternalEtcdVersionCheck checks if version of external etcd meets the demand of kubeadm

func (evc ExternalEtcdVersionCheck) Check() (warnings, errors []error)

type FileAvailableCheck ¶

type FileAvailableCheck struct {
	Path string
}

FileAvailableCheck checks that the given file does not already exist.

func (fac FileAvailableCheck) Check() (warnings, errors []error)

type FileContentCheck ¶ added in v1.6.0

type FileContentCheck struct {
	Path    string
	Content []byte
}

FileContentCheck checks that the given file contains the string Content.

func (fcc FileContentCheck) Check() (warnings, errors []error)

type FileExistingCheck ¶ added in v1.6.0

type FileExistingCheck struct {
	Path string
}

FileExistingCheck checks that the given file does not already exist.

func (fac FileExistingCheck) Check() (warnings, errors []error)

type FirewalldCheck ¶ added in v1.6.0

type FirewalldCheck struct {
	// contains filtered or unexported fields
}

FirewalldCheck checks if firewalld is enabled or active, and if so outputs a warning.

func (fc FirewalldCheck) Check() (warnings, errors []error)

type HTTPProxyCheck ¶ added in v1.6.0

type HTTPProxyCheck struct {
	Proto string
	Host  string
	Port  int
}

HTTPProxyCheck checks if https connection to specific host is going to be done directly or over proxy. If proxy detected, it will return warning.

func (hst HTTPProxyCheck) Check() (warnings, errors []error)

type HostnameCheck ¶

type HostnameCheck struct {
	// contains filtered or unexported fields
}

HostnameCheck checks if hostname match dns sub domain regex. If hostname doesn't match this regex, kubelet will not launch static pods like kube-apiserver/kube-controller-manager and so on.

func (hc HostnameCheck) Check() (warnings, errors []error)

type InPathCheck ¶

type InPathCheck struct {
	// contains filtered or unexported fields
}

InPathCheck checks if the given executable is present in the path

func (ipc InPathCheck) Check() (warnings, errors []error)

type IsRootCheck ¶

type IsRootCheck struct{}

IsRootCheck verifies user is root

func (irc IsRootCheck) Check() (warnings, errors []error)

type PortOpenCheck ¶

type PortOpenCheck struct {
	// contains filtered or unexported fields
}

PortOpenCheck ensures the given port is available for use.

func (poc PortOpenCheck) Check() (warnings, errors []error)

type ServiceCheck ¶

type ServiceCheck struct {
	Service       string
	CheckIfActive bool
}

ServiceCheck verifies that the given service is enabled and active. If we do not detect a supported init system however, all checks are skipped and a warning is returned.

func (sc ServiceCheck) Check() (warnings, errors []error)

type SystemVerificationCheck ¶ added in v1.6.0

type SystemVerificationCheck struct{}

func (sysver SystemVerificationCheck) Check() (warnings, errors []error)