100 lines
2.7 KiB
Go
100 lines
2.7 KiB
Go
package cluster
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import (
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"fmt"
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"github.com/zalando/postgres-operator/pkg/spec"
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v1 "k8s.io/api/core/v1"
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)
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// VersionMap Map of version numbers
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var VersionMap = map[string]int{
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"9.5": 90500,
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"9.6": 90600,
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"10": 100000,
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"11": 110000,
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"12": 120000,
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"13": 130000,
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}
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// IsBiggerPostgresVersion Compare two Postgres version numbers
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func IsBiggerPostgresVersion(old string, new string) bool {
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oldN, _ := VersionMap[old]
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newN, _ := VersionMap[new]
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return newN > oldN
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}
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// GetDesiredMajorVersionAsInt Convert string to comparable integer of PG version
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func (c *Cluster) GetDesiredMajorVersionAsInt() int {
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return VersionMap[c.GetDesiredMajorVersion()]
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}
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// GetDesiredMajorVersion returns major version to use, incl. potential auto upgrade
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func (c *Cluster) GetDesiredMajorVersion() string {
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if c.Config.OpConfig.MajorVersionUpgradeMode == "full" {
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// current is 9.5, minimal is 11 allowing 11 to 13 clusters, everything below is upgraded
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if IsBiggerPostgresVersion(c.Spec.PgVersion, c.Config.OpConfig.MinimalMajorVersion) {
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c.logger.Infof("overwriting configured major version %s to %s", c.Spec.PgVersion, c.Config.OpConfig.TargetMajorVersion)
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return c.Config.OpConfig.TargetMajorVersion
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}
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}
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return c.Spec.PgVersion
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}
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func (c *Cluster) majorVersionUpgrade() error {
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if c.OpConfig.MajorVersionUpgradeMode == "off" {
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return nil
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}
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desiredVersion := c.GetDesiredMajorVersionAsInt()
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if c.currentMajorVersion >= desiredVersion {
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c.logger.Infof("cluster version up to date. current: %d desired: %d", c.currentMajorVersion, desiredVersion)
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return nil
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}
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pods, err := c.listPods()
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if err != nil {
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return err
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}
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allRunning := true
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var masterPod *v1.Pod
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for _, pod := range pods {
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ps, _ := c.patroni.GetMemberData(&pod)
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if ps.State != "running" {
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allRunning = false
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c.logger.Infof("identified non running pod, potentially skipping major version upgrade")
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}
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if ps.Role == "master" {
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masterPod = &pod
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c.currentMajorVersion = ps.ServerVersion
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}
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}
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numberOfPods := len(pods)
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if allRunning && masterPod != nil {
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c.logger.Infof("healthy cluster ready to upgrade, current: %d desired: %d", c.currentMajorVersion, desiredVersion)
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if c.currentMajorVersion < desiredVersion {
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podName := &spec.NamespacedName{Namespace: masterPod.Namespace, Name: masterPod.Name}
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c.logger.Infof("triggering major version upgrade on pod %s of %d pods", masterPod.Name, numberOfPods)
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upgradeCommand := fmt.Sprintf("/usr/bin/python3 /scripts/inplace_upgrade.py %d 2>&1 | tee last_upgrade.log", numberOfPods)
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result, err := c.ExecCommand(podName, "/bin/su", "postgres", "-c", upgradeCommand)
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if err != nil {
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return err
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}
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c.logger.Infof("upgrade action triggered and command completed: %s", result[:50])
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}
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}
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return nil
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}
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