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60 lines
2.3 KiB
60 lines
2.3 KiB
/*
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Copyright © 2020 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 cluster
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import (
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"context"
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"fmt"
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"github.com/rancher/k3d/pkg/runtimes"
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k3d "github.com/rancher/k3d/pkg/types"
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log "github.com/sirupsen/logrus"
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)
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// AddMasterToLoadBalancer adds a new master node to the loadbalancer configuration
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func AddMasterToLoadBalancer(ctx context.Context, runtime runtimes.Runtime, cluster *k3d.Cluster, newNode *k3d.Node) error {
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// find the LoadBalancer for the target cluster
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masterNodes := ""
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var loadbalancer *k3d.Node
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for _, node := range cluster.Nodes {
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if node.Role == k3d.LoadBalancerRole { // get the loadbalancer we want to update
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loadbalancer = node
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} else if node.Role == k3d.MasterRole { // create a list of master nodes
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masterNodes += node.Name + ","
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}
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}
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if loadbalancer == nil {
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return fmt.Errorf("Failed to find loadbalancer for cluster '%s'", cluster.Name)
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}
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masterNodes += newNode.Name // append the new master node to the end of the list
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log.Debugf("Servers as passed to masterlb: '%s'", masterNodes)
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command := fmt.Sprintf("SERVERS=%s %s", masterNodes, "confd -onetime -backend env && nginx -s reload")
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if err := runtime.ExecInNode(ctx, loadbalancer, []string{"sh", "-c", command}); err != nil {
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log.Errorln("Failed to update loadbalancer configuration")
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return err
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}
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return nil
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}
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