// VerifyBootstrapConfig sanity-checks the initial config and returns an error
// for things that should never happen.
func (c *ServerConfig) VerifyBootstrapConfig() error {
m := c.Cluster.MemberByName(c.Name)
// Make sure the cluster at least contains the local server.
if m == nil {
return fmt.Errorf("couldn't find local name %q in the initial cluster configuration", c.Name)
}
if uint64(m.ID) == raft.None {
return fmt.Errorf("cannot use %x as member id", raft.None)
}
if c.DiscoveryURL == "" && !c.NewCluster {
return fmt.Errorf("initial cluster state unset and no wal or discovery URL found")
}
if err := c.Cluster.Validate(); err != nil {
return err
}
// Advertised peer URLs must match those in the cluster peer list
// TODO: Remove URLStringsEqual after improvement of using hostnames #2150 #2123
apurls := c.PeerURLs.StringSlice()
sort.Strings(apurls)
if !netutil.URLStringsEqual(apurls, m.PeerURLs) {
return fmt.Errorf("%s has different advertised URLs in the cluster and advertised peer URLs list", c.Name)
}
return nil
}
// ValidateClusterAndAssignIDs validates the local cluster by matching the PeerURLs
// with the existing cluster. If the validation succeeds, it assigns the IDs
// from the existing cluster to the local cluster.
// If the validation fails, an error will be returned.
func ValidateClusterAndAssignIDs(local *Cluster, existing *Cluster) error {
ems := existing.Members()
lms := local.Members()
if len(ems) != len(lms) {
return fmt.Errorf("member count is unequal")
}
sort.Sort(SortableMemberSliceByPeerURLs(ems))
sort.Sort(SortableMemberSliceByPeerURLs(lms))
for i := range ems {
// TODO: Remove URLStringsEqual after improvement of using hostnames #2150 #2123
if !netutil.URLStringsEqual(ems[i].PeerURLs, lms[i].PeerURLs) {
return fmt.Errorf("unmatched member while checking PeerURLs")
}
lms[i].ID = ems[i].ID
}
local.members = make(map[types.ID]*Member)
for _, m := range lms {
local.members[m.ID] = m
}
return nil
}