/
install.go
145 lines (129 loc) · 4.76 KB
/
install.go
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package cmd
import (
"bytes"
"fmt"
"io"
"io/ioutil"
"os"
"text/template"
"github.com/linkerd/linkerd2/cli/install"
"github.com/linkerd/linkerd2/pkg/k8s"
uuid "github.com/satori/go.uuid"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
type installConfig struct {
Namespace string
ControllerImage string
WebImage string
PrometheusImage string
GrafanaImage string
ControllerReplicas uint
WebReplicas uint
PrometheusReplicas uint
ImagePullPolicy string
UUID string
CliVersion string
ControllerLogLevel string
ControllerComponentLabel string
CreatedByAnnotation string
ProxyAPIPort uint
EnableTLS bool
TLSTrustAnchorConfigMapName string
ProxyContainerName string
}
type installOptions struct {
controllerReplicas uint
webReplicas uint
prometheusReplicas uint
controllerLogLevel string
*proxyConfigOptions
}
const prometheusProxyOutboundCapacity = 10000
func newInstallOptions() *installOptions {
return &installOptions{
controllerReplicas: 1,
webReplicas: 1,
prometheusReplicas: 1,
controllerLogLevel: "info",
proxyConfigOptions: newProxyConfigOptions(),
}
}
func newCmdInstall() *cobra.Command {
options := newInstallOptions()
cmd := &cobra.Command{
Use: "install [flags]",
Short: "Output Kubernetes configs to install Linkerd",
Long: "Output Kubernetes configs to install Linkerd.",
RunE: func(cmd *cobra.Command, args []string) error {
config, err := validateAndBuildConfig(options)
if err != nil {
return err
}
return render(*config, os.Stdout, options)
},
}
addProxyConfigFlags(cmd, options.proxyConfigOptions)
cmd.PersistentFlags().UintVar(&options.controllerReplicas, "controller-replicas", options.controllerReplicas, "Replicas of the controller to deploy")
cmd.PersistentFlags().UintVar(&options.webReplicas, "web-replicas", options.webReplicas, "Replicas of the web server to deploy")
cmd.PersistentFlags().UintVar(&options.prometheusReplicas, "prometheus-replicas", options.prometheusReplicas, "Replicas of prometheus to deploy")
cmd.PersistentFlags().StringVar(&options.controllerLogLevel, "controller-log-level", options.controllerLogLevel, "Log level for the controller and web components")
return cmd
}
func validateAndBuildConfig(options *installOptions) (*installConfig, error) {
if err := validate(options); err != nil {
return nil, err
}
return &installConfig{
Namespace: controlPlaneNamespace,
ControllerImage: fmt.Sprintf("%s/controller:%s", options.dockerRegistry, options.linkerdVersion),
WebImage: fmt.Sprintf("%s/web:%s", options.dockerRegistry, options.linkerdVersion),
PrometheusImage: "prom/prometheus:v2.4.0",
GrafanaImage: fmt.Sprintf("%s/grafana:%s", options.dockerRegistry, options.linkerdVersion),
ControllerReplicas: options.controllerReplicas,
WebReplicas: options.webReplicas,
PrometheusReplicas: options.prometheusReplicas,
ImagePullPolicy: options.imagePullPolicy,
UUID: uuid.NewV4().String(),
CliVersion: k8s.CreatedByAnnotationValue(),
ControllerLogLevel: options.controllerLogLevel,
ControllerComponentLabel: k8s.ControllerComponentLabel,
CreatedByAnnotation: k8s.CreatedByAnnotation,
ProxyAPIPort: options.proxyAPIPort,
EnableTLS: options.enableTLS(),
TLSTrustAnchorConfigMapName: k8s.TLSTrustAnchorConfigMapName,
ProxyContainerName: k8s.ProxyContainerName,
}, nil
}
func render(config installConfig, w io.Writer, options *installOptions) error {
template, err := template.New("linkerd").Parse(install.Template)
if err != nil {
return err
}
buf := &bytes.Buffer{}
err = template.Execute(buf, config)
if err != nil {
return err
}
if config.EnableTLS {
tlsTemplate, err := template.New("linkerd").Parse(install.TlsTemplate)
if err != nil {
return err
}
err = tlsTemplate.Execute(buf, config)
if err != nil {
return err
}
}
injectOptions := newInjectOptions()
injectOptions.proxyConfigOptions = options.proxyConfigOptions
// Special case for linkerd-proxy running in the Prometheus pod.
injectOptions.proxyOutboundCapacity[config.PrometheusImage] = prometheusProxyOutboundCapacity
return InjectYAML(buf, w, ioutil.Discard, injectOptions)
}
func validate(options *installOptions) error {
if _, err := log.ParseLevel(options.controllerLogLevel); err != nil {
return fmt.Errorf("--controller-log-level must be one of: panic, fatal, error, warn, info, debug")
}
return options.validate()
}