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 Go to latest Published: Sep 23, 2020 License: Apache-2.0 Imports: 36 Imported by: 0

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func GetKubeletVersion 

func GetKubeletVersion() (*version.Version, error)

GetKubeletVersion is helper function that returns version of kubelet available in $PATH

func RunChecks 

func RunChecks(checks []Checker, ww io.Writer, ignorePreflightErrors sets.String) error

RunChecks runs each check, displays it's warnings/errors, and once all are processed will exit if any errors occurred.

func RunInitMasterChecks 

func RunInitMasterChecks(execer utilsexec.Interface, cfg *kubeadmapi.MasterConfiguration, criSocket string, ignorePreflightErrors sets.String) error

RunInitMasterChecks executes all individual, applicable to Master node checks.

func RunJoinNodeChecks 

func RunJoinNodeChecks(execer utilsexec.Interface, cfg *kubeadmapi.NodeConfiguration, criSocket string, ignorePreflightErrors sets.String) error

RunJoinNodeChecks executes all individual, applicable to node checks.

func RunRootCheckOnly 

func RunRootCheckOnly(ignorePreflightErrors sets.String) error

RunRootCheckOnly initializes checks slice of structs and call RunChecks

func TryStartKubelet 

func TryStartKubelet(ignorePreflightErrors sets.String)

TryStartKubelet attempts to bring up kubelet service

Types

type CRICheck 

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

CRICheck verifies the container runtime through the CRI.

func (CRICheck) Check 

func (criCheck CRICheck) Check() (warnings, errors []error)

Check validates the container runtime through the CRI.

func (CRICheck) Name 

func (CRICheck) Name() string

Name returns label for CRICheck.

type Checker 

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

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

type DirAvailableCheck 

type DirAvailableCheck struct {
	Path  string
	Label string
}

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

func (DirAvailableCheck) Check 

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

Check validates if a directory does not exist or empty.

func (DirAvailableCheck) Name 

func (dac DirAvailableCheck) Name() string

Name returns label for individual DirAvailableChecks. If not known, will return based on path.

type Error 

type Error struct {
	Msg string
}

Error defines struct for communicating error messages generated by preflight checks

func (*Error) Error 

func (e *Error) Error() string

type ExternalEtcdVersionCheck 

type ExternalEtcdVersionCheck struct {
	Etcd kubeadmapi.Etcd
}

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

func (ExternalEtcdVersionCheck) Check 

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

Check validates external etcd version

func (ExternalEtcdVersionCheck) Name 

func (ExternalEtcdVersionCheck) Name() string

Name will return ExternalEtcdVersion as name for ExternalEtcdVersionCheck

type ExtraArgsCheck 

type ExtraArgsCheck struct {
	APIServerExtraArgs         map[string]string
	ControllerManagerExtraArgs map[string]string
	SchedulerExtraArgs         map[string]string
}

ExtraArgsCheck checks if arguments are valid.

func (ExtraArgsCheck) Check 

func (eac ExtraArgsCheck) Check() (warnings, errors []error)

Check validates additional arguments of the control plane components.

func (ExtraArgsCheck) Name 

func (ExtraArgsCheck) Name() string

Name will return ExtraArgs as name for ExtraArgsCheck

type FileAvailableCheck 

type FileAvailableCheck struct {
	Path  string
	Label string
}

FileAvailableCheck checks that the given file does not already exist.

func (FileAvailableCheck) Check 

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

Check validates if the given file does not already exist.

func (FileAvailableCheck) Name 

func (fac FileAvailableCheck) Name() string

Name returns label for individual FileAvailableChecks. If not known, will return based on path.

type FileContentCheck 

type FileContentCheck struct {
	Path    string
	Content []byte
	Label   string
}

FileContentCheck checks that the given file contains the string Content.

func (FileContentCheck) Check 

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

Check validates if the given file contains the given content.

func (FileContentCheck) Name 

func (fcc FileContentCheck) Name() string

Name returns label for individual FileContentChecks. If not known, will return based on path.

type FileExistingCheck 

type FileExistingCheck struct {
	Path  string
	Label string
}

FileExistingCheck checks that the given file does not already exist.

func (FileExistingCheck) Check 

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

Check validates if the given file already exists.

func (FileExistingCheck) Name 

func (fac FileExistingCheck) Name() string

Name returns label for individual FileExistingChecks. If not known, will return based on path.

type FirewalldCheck 

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

FirewalldCheck checks if firewalld is enabled or active. If it is, warn the user that there may be problems if no actions are taken.

func (FirewalldCheck) Check 

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

Check validates if the firewall is enabled and active.

func (FirewalldCheck) Name 

func (FirewalldCheck) Name() string

Name returns label for FirewalldCheck.

type HTTPProxyCIDRCheck 

type HTTPProxyCIDRCheck struct {
	Proto string
	CIDR  string
}

HTTPProxyCIDRCheck checks if https connection to specific subnet is going to be done directly or over proxy. If proxy detected, it will return warning. Similar to HTTPProxyCheck above, but operates with subnets and uses API machinery transport defaults to simulate kube-apiserver accessing cluster services and pods.

func (HTTPProxyCIDRCheck) Check 

func (subnet HTTPProxyCIDRCheck) Check() (warnings, errors []error)

Check validates http connectivity to first IP address in the CIDR. If it is not directly connected and goes via proxy it will produce warning.

func (HTTPProxyCIDRCheck) Name 

func (HTTPProxyCIDRCheck) Name() string

Name will return HTTPProxyCIDR as name for HTTPProxyCIDRCheck

type HTTPProxyCheck 

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 (HTTPProxyCheck) Check 

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

Check validates http connectivity type, direct or via proxy.

func (HTTPProxyCheck) Name 

func (hst HTTPProxyCheck) Name() string

Name returns HTTPProxy as name for HTTPProxyCheck

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 (HostnameCheck) Check 

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

Check validates if hostname match dns sub domain regex.

func (HostnameCheck) Name 

func (HostnameCheck) Name() string

Name will return Hostname as name for HostnameCheck

type InPathCheck 

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

InPathCheck checks if the given executable is present in $PATH

func (InPathCheck) Check 

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

Check validates if the given executable is present in the path.

func (InPathCheck) Name 

func (ipc InPathCheck) Name() string

Name returns label for individual InPathCheck. If not known, will return based on path.

type IsPrivilegedUserCheck 

type IsPrivilegedUserCheck struct{}

IsPrivilegedUserCheck verifies user is privileged (linux - root, windows - Administrator)

func (IsPrivilegedUserCheck) Check 

func (ipuc IsPrivilegedUserCheck) Check() (warnings, errors []error)

Check validates if an user has elevated (root) privileges.

func (IsPrivilegedUserCheck) Name 

func (IsPrivilegedUserCheck) Name() string

Name returns name for IsPrivilegedUserCheck

type KubeletVersionCheck 

type KubeletVersionCheck struct {
	KubernetesVersion string
}

KubeletVersionCheck validates installed kubelet version

func (KubeletVersionCheck) Check 

func (kubever KubeletVersionCheck) Check() (warnings, errors []error)

Check validates kubelet version. It should be not less than minimal supported version

func (KubeletVersionCheck) Name 

func (KubeletVersionCheck) Name() string

Name will return KubeletVersion as name for KubeletVersionCheck

type KubernetesVersionCheck 

type KubernetesVersionCheck struct {
	KubeadmVersion    string
	KubernetesVersion string
}

KubernetesVersionCheck validates kubernetes and kubeadm versions

func (KubernetesVersionCheck) Check 

func (kubever KubernetesVersionCheck) Check() (warnings, errors []error)

Check validates kubernetes and kubeadm versions

func (KubernetesVersionCheck) Name 

func (KubernetesVersionCheck) Name() string

Name will return KubernetesVersion as name for KubernetesVersionCheck

type PortOpenCheck 

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

PortOpenCheck ensures the given port is available for use.

func (PortOpenCheck) Check 

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

Check validates if the particular port is available.

func (PortOpenCheck) Name 

func (poc PortOpenCheck) Name() string

Name returns name for PortOpenCheck. If not known, will return "PortXXXX" based on port number

type ServiceCheck 

type ServiceCheck struct {
	Service       string
	CheckIfActive bool
	Label         string
}

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 (ServiceCheck) Check 

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

Check validates if the service is enabled and active.

func (ServiceCheck) Name 

func (sc ServiceCheck) Name() string

Name returns label for ServiceCheck. If not provided, will return based on the service parameter

type SwapCheck 

type SwapCheck struct{}

SwapCheck warns if swap is enabled

func (SwapCheck) Check 

func (swc SwapCheck) Check() (warnings, errors []error)

Check validates whether swap is enabled or not

func (SwapCheck) Name 

func (SwapCheck) Name() string

Name will return Swap as name for SwapCheck

type SystemVerificationCheck 

type SystemVerificationCheck struct {
	CRISocket string
}

SystemVerificationCheck defines struct used for for running the system verification node check in test/e2e_node/system

func (SystemVerificationCheck) Check 

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

Check runs all individual checks

func (SystemVerificationCheck) Name 

func (SystemVerificationCheck) Name() string

Name will return SystemVerification as name for SystemVerificationCheck

Source Files

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