app

Documentation

Index

• Constants
• type CacheApp
  • func NewCacheApp(params *ConfigParams) (*CacheApp, error)
  • func (c *CacheApp) Init()
  • func (c *CacheApp) RunApp()
  • func (c *CacheApp) TeardownNetworking() error
• type ConfigParams

Constants

const (
	DefaultConfigSyncPeriod = 10 * time.Second
	UpstreamServerVar       = "__PILLAR__UPSTREAM__SERVERS__"
	UpstreamClusterDNSVar   = "__PILLAR__CLUSTER__DNS__"
	LocalListenIPsVar       = "__PILLAR__LOCAL__DNS__"
	LocalDNSServerVar       = "__PILLAR__DNS__SERVER__"
	DefaultKubednsCMPath    = "/etc/kube-dns"
)

Types

type CacheApp

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

CacheApp contains all the config required to run node-cache.

func NewCacheApp

func NewCacheApp(params *ConfigParams) (*CacheApp, error)

NewCacheApp returns a new instance of CacheApp by applying the specified config params.

func (*CacheApp) Init

func (c *CacheApp) Init()

Init initializes the parameters and networking setup necessary to run node-cache

func (*CacheApp) RunApp

func (c *CacheApp) RunApp()

RunApp invokes the background checks and runs coreDNS as a cache

func (*CacheApp) TeardownNetworking

func (c *CacheApp) TeardownNetworking() error

TeardownNetworking removes all custom iptables rules and network interface added by node-cache

type ConfigParams

type ConfigParams struct {
	LocalIPStr           string        // comma separated listen ips for the local cache agent
	LocalIPs             []net.IP      // parsed ip addresses for the local cache agent to listen for dns requests
	LocalPort            string        // port to listen for dns requests
	MetricsListenAddress string        // address to serve metrics on
	SetupInterface       bool          // Indicates whether to setup network interface
	InterfaceName        string        // Name of the interface to be created
	Interval             time.Duration // specifies how often to run iptables rules check
	Pidfile              string        // Path to the coredns server pidfile
	BaseCoreFile         string        // Path to the template config file for node-cache
	CoreFile             string        // Path to config file used by node-cache
	KubednsCMPath        string        // Directory where kube-dns configmap will be mounted
	UpstreamSvcName      string        // Name of the service whose clusterIP is the upstream for node-cache for cluster domain
	HealthPort           string        // port for the healthcheck
	SetupIptables        bool
	SkipTeardown         bool // Indicates whether the iptables rules and interface should be torn down
}

ConfigParams lists the configuration options that can be provided to node-cache