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perform manual failover on pg cluster rolling upgrade

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This commit is contained in:
Murat Kabilov
2017-10-04 16:56:47 +03:00
committed by GitHub
parent 00194d0130
commit 48ec6b35b9
3 changed files with 56 additions and 8 deletions
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pkg/cluster/pod.go
+9 -2
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@@ -104,7 +104,7 @@ func (c *Cluster) recreatePod(pod v1.Pod) error {
if err := c.waitForPodDeletion(ch); err != nil {
return err
}
if err := c.waitForPodLabel(ch); err != nil {
if err := c.waitForPodLabel(ch, nil); err != nil {
return err
}
c.logger.Infof("pod %q is ready", podName)
@@ -127,6 +127,7 @@ func (c *Cluster) recreatePods() error {
c.logger.Infof("there are %d pods in the cluster to recreate", len(pods.Items))
var masterPod v1.Pod
replicas := make([]spec.NamespacedName, 0)
for _, pod := range pods.Items {
role := c.podSpiloRole(&pod)
@@ -138,11 +139,17 @@ func (c *Cluster) recreatePods() error {
if err := c.recreatePod(pod); err != nil {
return fmt.Errorf("could not recreate replica pod %q: %v", util.NameFromMeta(pod.ObjectMeta), err)
}
replicas = append(replicas, util.NameFromMeta(pod.ObjectMeta))
}
if masterPod.Name == "" {
c.logger.Warningln("no master pod in the cluster")
} else {
//TODO: do manual failover
err := c.ManualFailover(&masterPod, masterCandidate(replicas))
if err != nil {
return fmt.Errorf("could not perform manual failover: %v", err)
}
//TODO: specify master, leave new master empty
c.logger.Infof("recreating master pod %q", util.NameFromMeta(masterPod.ObjectMeta))