mirror of https://github.com/status-im/consul.git
545 lines
15 KiB
Go
545 lines
15 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: BUSL-1.1
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package sprawl
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import (
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"context"
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"crypto/rand"
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"encoding/base64"
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"errors"
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"fmt"
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"strings"
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"time"
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"github.com/hashicorp/consul/api"
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"github.com/hashicorp/go-multierror"
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"github.com/hashicorp/consul/testing/deployer/sprawl/internal/build"
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"github.com/hashicorp/consul/testing/deployer/sprawl/internal/secrets"
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"github.com/hashicorp/consul/testing/deployer/sprawl/internal/tfgen"
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"github.com/hashicorp/consul/testing/deployer/topology"
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"github.com/hashicorp/consul/testing/deployer/util"
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)
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const (
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sharedBootstrapToken = "root"
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// sharedBootstrapToken = "ec59aa56-1996-4ff1-911a-f5d782552a13"
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sharedAgentRecoveryToken = "22082b05-05c9-4a0a-b3da-b9685ac1d688"
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)
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func (s *Sprawl) launch() error {
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return s.launchType(true)
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}
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func (s *Sprawl) relaunch() error {
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return s.launchType(false)
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}
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func (s *Sprawl) launchType(firstTime bool) (launchErr error) {
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if err := build.DockerImages(s.logger, s.runner, s.topology); err != nil {
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return fmt.Errorf("build.DockerImages: %w", err)
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}
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if firstTime {
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// Initialize secrets the easy way for now (same in all clusters).
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gossipKey, err := newGossipKey()
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if err != nil {
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return fmt.Errorf("newGossipKey: %w", err)
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}
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for _, cluster := range s.topology.Clusters {
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s.secrets.SaveGeneric(cluster.Name, secrets.BootstrapToken, sharedBootstrapToken)
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s.secrets.SaveGeneric(cluster.Name, secrets.AgentRecovery, sharedAgentRecoveryToken)
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s.secrets.SaveGeneric(cluster.Name, secrets.GossipKey, gossipKey)
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// Give servers a copy of the bootstrap token for use as their agent tokens
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// to avoid complicating the chicken/egg situation for startup.
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for _, node := range cluster.Nodes {
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if node.IsServer() { // include disabled
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s.secrets.SaveAgentToken(cluster.Name, node.ID(), sharedBootstrapToken)
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}
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}
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}
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}
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var cleanupFuncs []func()
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defer func() {
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for i := len(cleanupFuncs) - 1; i >= 0; i-- {
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cleanupFuncs[i]()
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}
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}()
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if firstTime {
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var err error
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s.generator, err = tfgen.NewGenerator(
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s.logger.Named("tfgen"),
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s.runner,
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s.topology,
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&s.secrets,
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s.workdir,
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s.license,
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)
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if err != nil {
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return err
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}
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} else {
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s.generator.SetTopology(s.topology)
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}
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cleanupFuncs = append(cleanupFuncs, func() {
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// Log the error before the cleanup so you don't have to wait to see
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// the cause.
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if launchErr != nil {
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s.logger.Error("fatal error during launch", "error", launchErr)
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}
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_ = s.generator.DestroyAllQuietly()
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})
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if firstTime {
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// The networking phase is special. We have to pick a random subnet and
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// hope. Once we have this established once it is immutable for future
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// runs.
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if err := s.initNetworkingAndVolumes(); err != nil {
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return fmt.Errorf("initNetworkingAndVolumes: %w", err)
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}
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}
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if err := s.assignIPAddresses(); err != nil {
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return fmt.Errorf("assignIPAddresses: %w", err)
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}
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// The previous terraform run should have made the special volume for us.
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if err := s.initTLS(context.TODO()); err != nil {
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return fmt.Errorf("initTLS: %w", err)
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}
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if firstTime {
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if err := s.createFirstTime(); err != nil {
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return err
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}
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s.generator.MarkLaunched()
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} else {
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if err := s.updateExisting(); err != nil {
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return err
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}
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}
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if err := s.waitForPeeringEstablishment(); err != nil {
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return fmt.Errorf("waitForPeeringEstablishment: %w", err)
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}
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cleanupFuncs = nil // reset
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return nil
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}
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func (s *Sprawl) Stop() error {
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var merr error
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if s.generator != nil {
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if err := s.generator.DestroyAllQuietly(); err != nil {
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merr = multierror.Append(merr, err)
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}
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}
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return merr
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}
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const dockerOutOfNetworksErrorMessage = `Unable to create network: Error response from daemon: Pool overlaps with other one on this address space`
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var ErrDockerNetworkCollision = errors.New("could not create one or more docker networks for use due to subnet collision")
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func (s *Sprawl) initNetworkingAndVolumes() error {
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var lastErr error
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for attempts := 0; attempts < 5; attempts++ {
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err := s.generator.Generate(tfgen.StepNetworks)
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if err != nil && strings.Contains(err.Error(), dockerOutOfNetworksErrorMessage) {
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lastErr = ErrDockerNetworkCollision
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s.logger.Warn(ErrDockerNetworkCollision.Error()+"; retrying", "attempt", attempts+1)
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time.Sleep(1 * time.Second)
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continue
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} else if err != nil {
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return fmt.Errorf("generator[networks]: %w", err)
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}
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return nil
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}
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return lastErr
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}
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func (s *Sprawl) assignIPAddresses() error {
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// assign ips now that we have network ips known to us
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for _, net := range s.topology.Networks {
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if len(net.IPPool) == 0 {
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return fmt.Errorf("network %q does not have any ip assignments", net.Name)
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}
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}
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for _, cluster := range s.topology.Clusters {
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for _, node := range cluster.Nodes {
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for _, addr := range node.Addresses {
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net, ok := s.topology.Networks[addr.Network]
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if !ok {
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return fmt.Errorf("unknown network %q", addr.Network)
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}
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addr.IPAddress = net.IPByIndex(node.Index)
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s.logger.Info("assign addr", "node", node.Name, "addr", addr.IPAddress, "enabled", !node.Disabled)
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}
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}
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}
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return nil
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}
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func (s *Sprawl) initConsulServers() error {
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if err := s.generator.Generate(tfgen.StepServers); err != nil {
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return fmt.Errorf("generator[servers]: %w", err)
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}
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// s.logger.Info("ALL", "t", jd(s.topology)) // TODO
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// Create token-less api clients first.
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for _, cluster := range s.topology.Clusters {
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node := cluster.FirstServer()
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var err error
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s.clients[cluster.Name], err = util.ProxyAPIClient(
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node.LocalProxyPort(),
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node.LocalAddress(),
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8500,
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"", /*no token yet*/
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)
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if err != nil {
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return fmt.Errorf("error creating initial bootstrap client for cluster=%s: %w", cluster.Name, err)
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}
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}
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if err := s.rejoinAllConsulServers(); err != nil {
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return err
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}
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for _, cluster := range s.topology.Clusters {
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err := s.bootstrapACLs(cluster.Name)
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if err != nil {
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return fmt.Errorf("bootstrap[%s]: %w", cluster.Name, err)
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}
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mgmtToken := s.secrets.ReadGeneric(cluster.Name, secrets.BootstrapToken)
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// Reconfigure the clients to use a management token.
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node := cluster.FirstServer()
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s.clients[cluster.Name], err = util.ProxyAPIClient(
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node.LocalProxyPort(),
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node.LocalAddress(),
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8500,
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mgmtToken,
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)
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if err != nil {
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return fmt.Errorf("error creating final client for cluster=%s: %v", cluster.Name, err)
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}
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// Connect to gRPC as well.
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if cluster.EnableV2 {
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s.grpcConns[cluster.Name], s.grpcConnCancel[cluster.Name], err = s.dialServerGRPC(cluster, node, mgmtToken)
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if err != nil {
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return fmt.Errorf("error creating gRPC client conn for cluster=%s: %w", cluster.Name, err)
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}
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}
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// For some reason the grpc resolver stuff for partitions takes some
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// time to get ready.
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s.waitForLocalWrites(cluster, mgmtToken)
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// Create tenancies so that the ACL tokens and clients have somewhere to go.
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if cluster.Enterprise {
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if err := s.initTenancies(cluster); err != nil {
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return fmt.Errorf("initTenancies[%s]: %w", cluster.Name, err)
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}
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}
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if err := s.populateInitialConfigEntries(cluster); err != nil {
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return fmt.Errorf("populateInitialConfigEntries[%s]: %w", cluster.Name, err)
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}
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if cluster.EnableV2 {
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// Resources are available only in V2
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if err := s.populateInitialResources(cluster); err != nil {
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return fmt.Errorf("populateInitialResources[%s]: %w", cluster.Name, err)
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}
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}
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if err := s.createAnonymousToken(cluster); err != nil {
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return fmt.Errorf("createAnonymousToken[%s]: %w", cluster.Name, err)
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}
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// Create tokens for all of the agents to use for anti-entropy.
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//
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// NOTE: this will cause the servers to roll to pick up the change to
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// the acl{tokens{agent=XXX}}} section.
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if err := s.createAgentTokens(cluster); err != nil {
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return fmt.Errorf("createAgentTokens[%s]: %w", cluster.Name, err)
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}
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}
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return nil
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}
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func (s *Sprawl) createFirstTime() error {
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if err := s.initConsulServers(); err != nil {
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return fmt.Errorf("initConsulServers: %w", err)
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}
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if err := s.generator.Generate(tfgen.StepAgents); err != nil {
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return fmt.Errorf("generator[agents]: %w", err)
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}
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for _, cluster := range s.topology.Clusters {
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if err := s.waitForClientAntiEntropyOnce(cluster); err != nil {
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return fmt.Errorf("waitForClientAntiEntropyOnce[%s]: %w", cluster.Name, err)
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}
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}
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// Ideally we start services WITH a token initially, so we pre-create them
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// before running terraform for them.
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if err := s.createAllServiceTokens(); err != nil {
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return fmt.Errorf("createAllServiceTokens: %w", err)
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}
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if err := s.syncAllServicesForDataplaneInstances(); err != nil {
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return fmt.Errorf("syncAllServicesForDataplaneInstances: %w", err)
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}
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// We can do this ahead, because we've incrementally run terraform as
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// we went.
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if err := s.registerAllServicesToAgents(); err != nil {
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return fmt.Errorf("registerAllServicesToAgents: %w", err)
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}
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// NOTE: start services WITH token initially
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if err := s.generator.Generate(tfgen.StepServices); err != nil {
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return fmt.Errorf("generator[services]: %w", err)
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}
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if err := s.initPeerings(); err != nil {
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return fmt.Errorf("initPeerings: %w", err)
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}
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return nil
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}
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func (s *Sprawl) updateExisting() error {
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if err := s.preRegenTasks(); err != nil {
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return fmt.Errorf("preRegenTasks: %w", err)
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}
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// We save all of the terraform to the end. Some of the containers will
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// be a little broken until we can do stuff like register services to
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// new agents, which we cannot do until they come up.
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if err := s.generator.Generate(tfgen.StepRelaunch); err != nil {
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return fmt.Errorf("generator[relaunch]: %w", err)
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}
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if err := s.postRegenTasks(); err != nil {
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return fmt.Errorf("postRegenTasks: %w", err)
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}
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// TODO: enforce that peering relationships cannot change
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// TODO: include a fixup version of new peerings?
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return nil
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}
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func (s *Sprawl) preRegenTasks() error {
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for _, cluster := range s.topology.Clusters {
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// Create tenancies so that the ACL tokens and clients have somewhere to go.
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if cluster.Enterprise {
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if err := s.initTenancies(cluster); err != nil {
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return fmt.Errorf("initTenancies[%s]: %w", cluster.Name, err)
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}
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}
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if err := s.populateInitialConfigEntries(cluster); err != nil {
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return fmt.Errorf("populateInitialConfigEntries[%s]: %w", cluster.Name, err)
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}
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// Create tokens for all of the agents to use for anti-entropy.
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if err := s.createAgentTokens(cluster); err != nil {
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return fmt.Errorf("createAgentTokens[%s]: %w", cluster.Name, err)
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}
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}
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// Ideally we start services WITH a token initially, so we pre-create them
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// before running terraform for them.
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if err := s.createAllServiceTokens(); err != nil {
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return fmt.Errorf("createAllServiceTokens: %w", err)
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}
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if err := s.syncAllServicesForDataplaneInstances(); err != nil {
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return fmt.Errorf("syncAllServicesForDataplaneInstances: %w", err)
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}
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return nil
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}
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func (s *Sprawl) postRegenTasks() error {
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if err := s.rejoinAllConsulServers(); err != nil {
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return err
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}
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for _, cluster := range s.topology.Clusters {
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var err error
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mgmtToken := s.secrets.ReadGeneric(cluster.Name, secrets.BootstrapToken)
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// Reconfigure the clients to use a management token.
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node := cluster.FirstServer()
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s.clients[cluster.Name], err = util.ProxyAPIClient(
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node.LocalProxyPort(),
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node.LocalAddress(),
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8500,
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mgmtToken,
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)
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if err != nil {
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return fmt.Errorf("error creating final client for cluster=%s: %v", cluster.Name, err)
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}
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s.waitForLeader(cluster)
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// For some reason the grpc resolver stuff for partitions takes some
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// time to get ready.
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s.waitForLocalWrites(cluster, mgmtToken)
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}
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for _, cluster := range s.topology.Clusters {
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if err := s.waitForClientAntiEntropyOnce(cluster); err != nil {
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return fmt.Errorf("waitForClientAntiEntropyOnce[%s]: %w", cluster.Name, err)
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}
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}
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if err := s.registerAllServicesToAgents(); err != nil {
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return fmt.Errorf("registerAllServicesToAgents: %w", err)
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}
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return nil
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}
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func (s *Sprawl) waitForLocalWrites(cluster *topology.Cluster, token string) {
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var (
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client = s.clients[cluster.Name]
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logger = s.logger.With("cluster", cluster.Name)
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)
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tryKV := func() error {
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_, err := client.KV().Put(&api.KVPair{
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Key: "local-test",
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Value: []byte("payload-for-local-test-in-" + cluster.Name),
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}, nil)
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return err
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}
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tryAP := func() error {
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if !cluster.Enterprise {
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return nil
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}
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_, _, err := client.Partitions().Create(context.Background(), &api.Partition{
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Name: "placeholder",
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}, &api.WriteOptions{Token: token})
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return err
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}
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start := time.Now()
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for attempts := 0; ; attempts++ {
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if err := tryKV(); err != nil {
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logger.Debug("local kv write failed; something is not ready yet", "error", err)
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time.Sleep(500 * time.Millisecond)
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continue
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} else {
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dur := time.Since(start)
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logger.Debug("local kv write success", "elapsed", dur, "retries", attempts)
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}
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break
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}
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if cluster.Enterprise {
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start = time.Now()
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for attempts := 0; ; attempts++ {
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if err := tryAP(); err != nil {
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logger.Debug("local partition write failed; something is not ready yet", "error", err)
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time.Sleep(500 * time.Millisecond)
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continue
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} else {
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dur := time.Since(start)
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logger.Debug("local partition write success", "elapsed", dur, "retries", attempts)
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}
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break
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}
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}
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}
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func (s *Sprawl) waitForClientAntiEntropyOnce(cluster *topology.Cluster) error {
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if cluster.EnableV2 {
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return nil // v1 catalog is disabled when v2 catalog is enabled
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}
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var (
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client = s.clients[cluster.Name]
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logger = s.logger.With("cluster", cluster.Name)
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)
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var (
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queryOptionList = cluster.PartitionQueryOptionsList()
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start = time.Now()
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cc = client.Catalog()
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)
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for {
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// Enumerate all of the nodes that are currently in the catalog. This
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// will overmatch including things like fake nodes for agentless but
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// that's ok.
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current := make(map[topology.NodeID]*api.Node)
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for _, queryOpts := range queryOptionList {
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nodes, _, err := cc.Nodes(queryOpts)
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if err != nil {
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return err
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}
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for _, node := range nodes {
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nid := topology.NewNodeID(node.Node, node.Partition)
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current[nid] = node
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}
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}
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// See if we have them all.
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var stragglers []topology.NodeID
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for _, node := range cluster.Nodes {
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if !node.IsAgent() || node.Disabled {
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continue
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}
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nid := node.CatalogID()
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got, ok := current[nid]
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if ok && len(got.TaggedAddresses) > 0 {
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// this is a field that is not updated just due to serf reconcile
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continue
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}
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stragglers = append(stragglers, nid)
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}
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if len(stragglers) == 0 {
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dur := time.Since(start)
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logger.Debug("all nodes have posted node updates, so first anti-entropy has happened", "elapsed", dur)
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return nil
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}
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logger.Debug("not all nodes have posted node updates yet", "nodes", stragglers)
|
|
|
|
time.Sleep(1 * time.Second)
|
|
}
|
|
}
|
|
|
|
func newGossipKey() (string, error) {
|
|
key := make([]byte, 16)
|
|
n, err := rand.Reader.Read(key)
|
|
if err != nil {
|
|
return "", fmt.Errorf("error reading random data: %s", err)
|
|
}
|
|
if n != 16 {
|
|
return "", fmt.Errorf("couldn't read enough entropy. Generate more entropy")
|
|
}
|
|
return base64.StdEncoding.EncodeToString(key), nil
|
|
}
|