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windows.go
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windows.go
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package nodebootstrap
import (
"encoding/base64"
"fmt"
"strconv"
"strings"
"github.com/kris-nova/logger"
api "github.com/weaveworks/eksctl/pkg/apis/eksctl.io/v1alpha5"
"github.com/weaveworks/eksctl/pkg/nodebootstrap/utils"
)
type Windows struct {
clusterConfig *api.ClusterConfig
np api.NodePool
clusterDNS string
}
type keyValue struct {
key string
value string
}
func NewWindowsBootstrapper(clusterConfig *api.ClusterConfig, np api.NodePool, clusterDNS string) *Windows {
return &Windows{
clusterConfig: clusterConfig,
np: np,
clusterDNS: clusterDNS,
}
}
func (b *Windows) UserData() (string, error) {
bootstrapCommands := []string{
`<powershell>
[string]$EKSBootstrapScriptFile = "$env:ProgramFiles\Amazon\EKS\Start-EKSBootstrap.ps1"`,
}
ng := b.np.BaseNodeGroup()
bootstrapCommands = append(bootstrapCommands, ng.PreBootstrapCommands...)
eksBootstrapCommand := fmt.Sprintf("& $EKSBootstrapScriptFile %s 3>&1 4>&1 5>&1 6>&1", b.makeBootstrapParams())
bootstrapCommands = append(bootstrapCommands,
eksBootstrapCommand,
"</powershell>",
)
userData := base64.StdEncoding.EncodeToString([]byte(strings.Join(bootstrapCommands, "\n")))
logger.Debug("user-data = %s", userData)
return userData, nil
}
func (b *Windows) makeBootstrapParams() string {
params := []keyValue{
{
key: "EKSClusterName",
value: b.clusterConfig.Metadata.Name,
},
{
key: "APIServerEndpoint",
value: b.clusterConfig.Status.Endpoint,
},
{
key: "Base64ClusterCA",
value: base64.StdEncoding.EncodeToString(b.clusterConfig.Status.CertificateAuthorityData),
},
{
key: "ServiceCIDR",
value: b.clusterConfig.Status.KubernetesNetworkConfig.ServiceIPv4CIDR,
},
}
if unmanaged, ok := b.np.(*api.NodeGroup); ok {
// DNSClusterIP is only configurable for self-managed nodegroups.
if b.clusterDNS != "" {
params = append(params, keyValue{
key: "DNSClusterIP",
value: b.clusterDNS,
})
}
// ContainerRuntime is only configurable for self-managed nodegroups.
if unmanaged.ContainerRuntime != nil {
params = append(params, keyValue{
key: "ContainerRuntime",
value: *unmanaged.ContainerRuntime,
})
}
}
params = append(params, keyValue{
key: "KubeletExtraArgs",
value: b.makeKubeletOptions(),
})
return formatWindowsParams(params)
}
func (b *Windows) makeKubeletOptions() string {
ng := b.np.BaseNodeGroup()
kubeletOptions := []keyValue{
{
key: "node-labels",
value: formatLabels(ng.Labels),
},
{
key: "register-with-taints",
value: utils.FormatTaints(b.np.NGTaints()),
},
}
if ng.MaxPodsPerNode != 0 {
kubeletOptions = append(kubeletOptions, keyValue{
key: "max-pods",
value: strconv.Itoa(ng.MaxPodsPerNode),
})
}
return toCLIArgs(kubeletOptions)
}
// formatWindowsParams formats params into `-key "value"`, ignoring keys with empty values
func formatWindowsParams(params []keyValue) string {
var args []string
for _, param := range params {
if param.value != "" {
args = append(args, fmt.Sprintf("-%s %q", param.key, param.value))
}
}
return strings.Join(args, " ")
}
func toCLIArgs(params []keyValue) string {
var args []string
for _, param := range params {
args = append(args, fmt.Sprintf("--%s=%s", param.key, param.value))
}
return strings.Join(args, " ")
}