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216 lines
8.0 KiB
216 lines
8.0 KiB
/*
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Copyright © 2020-2023 The k3d Author(s)
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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package node
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import (
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"fmt"
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"strings"
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"time"
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"github.com/spf13/cobra"
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dockerunits "github.com/docker/go-units"
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cliutil "github.com/k3d-io/k3d/v5/cmd/util"
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k3dc "github.com/k3d-io/k3d/v5/pkg/client"
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l "github.com/k3d-io/k3d/v5/pkg/logger"
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"github.com/k3d-io/k3d/v5/pkg/runtimes"
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k3d "github.com/k3d-io/k3d/v5/pkg/types"
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)
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// NewCmdNodeCreate returns a new cobra command
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func NewCmdNodeCreate() *cobra.Command {
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createNodeOpts := k3d.NodeCreateOpts{}
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// create new command
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cmd := &cobra.Command{
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Use: "create NAME",
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Short: "Create a new k3s node in docker",
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Long: `Create a new containerized k3s node (k3s in docker).`,
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Args: cobra.ExactArgs(1), // exactly one name accepted // TODO: if not specified, inherit from cluster that the node shall belong to, if that is specified
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Run: func(cmd *cobra.Command, args []string) {
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nodes, clusterName := parseCreateNodeCmd(cmd, args)
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if strings.HasPrefix(clusterName, "https://") {
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l.Log().Infof("Adding %d node(s) to the remote cluster '%s'...", len(nodes), clusterName)
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if err := k3dc.NodeAddToClusterMultiRemote(cmd.Context(), runtimes.SelectedRuntime, nodes, clusterName, createNodeOpts); err != nil {
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l.Log().Fatalf("failed to add %d node(s) to the remote cluster '%s': %v", len(nodes), clusterName, err)
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}
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} else {
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l.Log().Infof("Adding %d node(s) to the runtime local cluster '%s'...", len(nodes), clusterName)
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if err := k3dc.NodeAddToClusterMulti(cmd.Context(), runtimes.SelectedRuntime, nodes, &k3d.Cluster{Name: clusterName}, createNodeOpts); err != nil {
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l.Log().Fatalf("failed to add %d node(s) to the runtime local cluster '%s': %v", len(nodes), clusterName, err)
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}
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}
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l.Log().Infof("Successfully created %d node(s)!", len(nodes))
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},
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}
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// add flags
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cmd.Flags().Int("replicas", 1, "Number of replicas of this node specification.")
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cmd.Flags().String("role", string(k3d.AgentRole), "Specify node role [server, agent]")
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if err := cmd.RegisterFlagCompletionFunc("role", cliutil.ValidArgsNodeRoles); err != nil {
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l.Log().Fatalln("Failed to register flag completion for '--role'", err)
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}
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cmd.Flags().StringP("cluster", "c", k3d.DefaultClusterName, "Cluster URL or k3d cluster name to connect to.")
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if err := cmd.RegisterFlagCompletionFunc("cluster", cliutil.ValidArgsAvailableClusters); err != nil {
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l.Log().Fatalln("Failed to register flag completion for '--cluster'", err)
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}
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cmd.Flags().StringP("image", "i", "", "Specify k3s image used for the node(s) (default: copied from existing node)")
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cmd.Flags().String("memory", "", "Memory limit imposed on the node [From docker]")
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cmd.Flags().BoolVar(&createNodeOpts.Wait, "wait", true, "Wait for the node(s) to be ready before returning.")
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cmd.Flags().DurationVar(&createNodeOpts.Timeout, "timeout", 0*time.Second, "Maximum waiting time for '--wait' before canceling/returning.")
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cmd.Flags().StringSliceP("runtime-label", "", []string{}, "Specify container runtime labels in format \"foo=bar\"")
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cmd.Flags().StringSliceP("runtime-ulimit", "", []string{}, "Specify container runtime ulimit in format \"ulimit=soft:hard\"")
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cmd.Flags().StringSliceP("k3s-node-label", "", []string{}, "Specify k3s node labels in format \"foo=bar\"")
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cmd.Flags().StringSliceP("network", "n", []string{}, "Add node to (another) runtime network")
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cmd.Flags().StringVarP(&createNodeOpts.ClusterToken, "token", "t", "", "Override cluster token (required when connecting to an external cluster)")
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cmd.Flags().StringArray("k3s-arg", nil, "Additional args passed to k3d command")
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// done
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return cmd
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}
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// parseCreateNodeCmd parses the command input into variables required to create a node
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func parseCreateNodeCmd(cmd *cobra.Command, args []string) ([]*k3d.Node, string) {
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// --replicas
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replicas, err := cmd.Flags().GetInt("replicas")
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if err != nil {
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l.Log().Errorln("No replica count specified")
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l.Log().Fatalln(err)
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}
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// --role
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roleStr, err := cmd.Flags().GetString("role")
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if err != nil {
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l.Log().Errorln("No node role specified")
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l.Log().Fatalln(err)
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}
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if _, ok := k3d.NodeRoles[roleStr]; !ok {
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l.Log().Fatalf("Unknown node role '%s'\n", roleStr)
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}
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role := k3d.NodeRoles[roleStr]
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// --image
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image, err := cmd.Flags().GetString("image")
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if err != nil {
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l.Log().Errorln("No image specified")
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l.Log().Fatalln(err)
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}
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// --cluster
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clusterName, err := cmd.Flags().GetString("cluster")
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if err != nil {
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l.Log().Fatalln(err)
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}
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// --memory
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memory, err := cmd.Flags().GetString("memory")
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if err != nil {
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l.Log().Errorln("No memory specified")
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l.Log().Fatalln(err)
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}
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if _, err := dockerunits.RAMInBytes(memory); memory != "" && err != nil {
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l.Log().Errorf("Provided memory limit value is invalid")
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}
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// --runtime-label
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runtimeLabelsFlag, err := cmd.Flags().GetStringSlice("runtime-label")
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if err != nil {
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l.Log().Fatalf("No runtime-label specified: %v", err)
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}
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runtimeLabels := make(map[string]string, len(runtimeLabelsFlag)+1)
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for _, label := range runtimeLabelsFlag {
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labelSplitted := strings.Split(label, "=")
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if len(labelSplitted) != 2 {
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l.Log().Fatalf("unknown runtime-label format format: %s, use format \"foo=bar\"", label)
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}
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cliutil.ValidateRuntimeLabelKey(labelSplitted[0])
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runtimeLabels[labelSplitted[0]] = labelSplitted[1]
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}
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// Internal k3d runtime labels take precedence over user-defined labels
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runtimeLabels[k3d.LabelRole] = roleStr
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// --runtime-ulimit
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runtimeUlimitsFlag, err := cmd.Flags().GetStringSlice("runtime-ulimit")
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if err != nil {
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l.Log().Fatalf("No runtime-ulimit specified: %v", err)
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}
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runtimeUlimits := make([]*dockerunits.Ulimit, len(runtimeUlimitsFlag))
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for index, ulimit := range runtimeUlimitsFlag {
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runtimeUlimits[index] = cliutil.ParseRuntimeUlimit[dockerunits.Ulimit](ulimit)
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}
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// --k3s-node-label
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k3sNodeLabelsFlag, err := cmd.Flags().GetStringSlice("k3s-node-label")
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if err != nil {
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l.Log().Errorln("No k3s-node-label specified")
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l.Log().Fatalln(err)
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}
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k3sNodeLabels := make(map[string]string, len(k3sNodeLabelsFlag))
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for _, label := range k3sNodeLabelsFlag {
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labelSplitted := strings.Split(label, "=")
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if len(labelSplitted) != 2 {
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l.Log().Fatalf("unknown k3s-node-label format format: %s, use format \"foo=bar\"", label)
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}
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k3sNodeLabels[labelSplitted[0]] = labelSplitted[1]
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}
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// --network
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networks, err := cmd.Flags().GetStringSlice("network")
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if err != nil {
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l.Log().Fatalf("failed to get --network string slice flag: %v", err)
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}
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// --k3s-arg
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k3sArgs, err := cmd.Flags().GetStringArray("k3s-arg")
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if err != nil {
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l.Log().Fatalf("failed to get --k3s-arg string array flag: %v", err)
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}
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// generate list of nodes
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nodes := []*k3d.Node{}
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for i := 0; i < replicas; i++ {
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node := &k3d.Node{
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Name: fmt.Sprintf("%s-%s-%d", k3d.DefaultObjectNamePrefix, args[0], i),
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Role: role,
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Image: image,
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K3sNodeLabels: k3sNodeLabels,
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RuntimeLabels: runtimeLabels,
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RuntimeUlimits: runtimeUlimits,
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Restart: true,
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Memory: memory,
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Networks: networks,
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Args: k3sArgs,
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}
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nodes = append(nodes, node)
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}
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return nodes, clusterName
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}
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