136 lines
4.7 KiB
Go
136 lines
4.7 KiB
Go
package cluster
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import (
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"fmt"
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"strings"
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"github.com/zalando/postgres-operator/pkg/spec"
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"github.com/zalando/postgres-operator/pkg/util"
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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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"10": 100000,
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"11": 110000,
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"12": 120000,
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"13": 130000,
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"14": 140000,
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"15": 150000,
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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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// e.g. current is 10, minimal is 11 allowing 11 to 15 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) isUpgradeAllowedForTeam(owningTeam string) bool {
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allowedTeams := c.OpConfig.MajorVersionUpgradeTeamAllowList
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if len(allowedTeams) == 0 {
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return false
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}
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return util.SliceContains(allowedTeams, owningTeam)
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}
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/*
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Execute upgrade when mode is set to manual or full or when the owning team is allowed for upgrade (and mode is "off").
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Manual upgrade means, it is triggered by the user via manifest version change
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Full upgrade means, operator also determines the minimal version used accross all clusters and upgrades violators.
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*/
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func (c *Cluster) majorVersionUpgrade() error {
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if c.OpConfig.MajorVersionUpgradeMode == "off" && !c.isUpgradeAllowedForTeam(c.Spec.TeamID) {
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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, min 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 i, 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 = &pods[i]
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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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c.eventRecorder.Eventf(c.GetReference(), v1.EventTypeNormal, "Major Version Upgrade", "starting major version upgrade on pod %s of %d pods", masterPod.Name, numberOfPods)
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upgradeCommand := fmt.Sprintf("set -o pipefail && /usr/bin/python3 /scripts/inplace_upgrade.py %d 2>&1 | tee last_upgrade.log", numberOfPods)
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c.logger.Debugf("checking if the spilo image runs with root or non-root (check for user id=0)")
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resultIdCheck, errIdCheck := c.ExecCommand(podName, "/bin/bash", "-c", "/usr/bin/id -u")
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if errIdCheck != nil {
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c.eventRecorder.Eventf(c.GetReference(), v1.EventTypeWarning, "Major Version Upgrade", "checking user id to run upgrade from %d to %d FAILED: %v", c.currentMajorVersion, desiredVersion, errIdCheck)
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}
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resultIdCheck = strings.TrimSuffix(resultIdCheck, "\n")
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var result string
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if resultIdCheck != "0" {
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c.logger.Infof("user id was identified as: %s, hence default user is non-root already", resultIdCheck)
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result, err = c.ExecCommand(podName, "/bin/bash", "-c", upgradeCommand)
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} else {
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c.logger.Infof("user id was identified as: %s, using su to reach the postgres user", resultIdCheck)
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result, err = c.ExecCommand(podName, "/bin/su", "postgres", "-c", upgradeCommand)
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}
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if err != nil {
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c.eventRecorder.Eventf(c.GetReference(), v1.EventTypeWarning, "Major Version Upgrade", "upgrade from %d to %d FAILED: %v", c.currentMajorVersion, desiredVersion, err)
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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[:100])
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c.eventRecorder.Eventf(c.GetReference(), v1.EventTypeNormal, "Major Version Upgrade", "upgrade from %d to %d finished", c.currentMajorVersion, desiredVersion)
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}
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}
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return nil
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}
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