예제 #1
0
파일: actor.go 프로젝트: rjammala/vitess
func SlaveWasPromoted(ts topo.Server, mysqlDaemon mysqlctl.MysqlDaemon, tabletAlias topo.TabletAlias) error {
	// We first check we don't have a master any more.
	// If we do, it probably means we're not *the* master, and something
	// is really wrong.
	masterAddr, err := mysqlDaemon.GetMasterAddr()
	if err != mysqlctl.ErrNotSlave {
		return fmt.Errorf("new master is a slave: %v %v", masterAddr, err)
	}

	tablet, err := ts.GetTablet(tabletAlias)
	if err != nil {
		return err
	}

	return updateReplicationGraphForPromotedSlave(ts, mysqlDaemon, tablet)
}
예제 #2
0
파일: actor.go 프로젝트: qinbo/vitess
func SlaveWasRestarted(ts topo.Server, mysqlDaemon mysqlctl.MysqlDaemon, tabletAlias topo.TabletAlias, swrd *actionnode.SlaveWasRestartedArgs) error {
	tablet, err := ts.GetTablet(tabletAlias)
	if err != nil {
		return err
	}

	// check the reparent actually worked
	masterAddr, err := mysqlDaemon.GetMasterAddr()
	if err != nil {
		return err
	}
	if masterAddr != swrd.ExpectedMasterAddr && masterAddr != swrd.ExpectedMasterIpAddr {
		log.Errorf("SlaveWasRestarted found unexpected master %v for %v (was expecting %v or %v)", masterAddr, tabletAlias, swrd.ExpectedMasterAddr, swrd.ExpectedMasterIpAddr)
		// Disabled for now
		// if swrd.ContinueOnUnexpectedMaster {
		//	log.Errorf("ContinueOnUnexpectedMaster is set, we keep going anyway")
		// } else
		if swrd.ScrapStragglers {
			return Scrap(ts, tablet.Alias, false)
		} else {
			return fmt.Errorf("Unexpected master %v for %v (was expecting %v or %v)", masterAddr, tabletAlias, swrd.ExpectedMasterAddr, swrd.ExpectedMasterIpAddr)
		}
	}

	// Once this action completes, update authoritive tablet node first.
	tablet.Parent = swrd.Parent
	if tablet.Type == topo.TYPE_MASTER {
		tablet.Type = topo.TYPE_SPARE
		tablet.State = topo.STATE_READ_ONLY
	}
	err = topo.UpdateTablet(ts, tablet)
	if err != nil {
		return err
	}

	// Update the new tablet location in the replication graph now that
	// we've updated the tablet.
	err = topo.CreateTabletReplicationData(ts, tablet.Tablet)
	if err != nil && err != topo.ErrNodeExists {
		return err
	}

	return nil
}