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Write rpc_port file to garage meta dir

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This file is then used in later startups when determining the rpc port,
thus preventing the user from changing the port by accident.
This commit is contained in:
Brian Picciano 2023-01-17 20:31:22 +01:00
parent ca003eaf85
commit 1dc22701cd
5 changed files with 78 additions and 28 deletions
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2
entrypoint/src/cmd/entrypoint/admin.go
View File

@ -183,7 +183,7 @@ var subCmdAdminCreateNetwork = subCmd{
hostBootstrap.Garage.AdminToken = randStr(32)
hostBootstrap.Garage.GlobalBucketS3APICredentials = garage.NewS3APICredentials()
if hostBootstrap, err = mergeDaemonConfigIntoBootstrap(hostBootstrap, daemonConfig); err != nil {
if hostBootstrap, daemonConfig, err = coalesceDaemonConfigAndBootstrap(hostBootstrap, daemonConfig); err != nil {
return fmt.Errorf("merging daemon config into bootstrap data: %w", err)
}

2
entrypoint/src/cmd/entrypoint/daemon.go
View File

@ -305,7 +305,7 @@ var subCmdDaemon = subCmd{
// up-to-date possible bootstrap. This updated bootstrap will later get
// updated in garage using bootstrap.PutGarageBoostrapHost, so other
// hosts will see it as well.
if hostBootstrap, err = mergeDaemonConfigIntoBootstrap(hostBootstrap, daemonConfig); err != nil {
if hostBootstrap, daemonConfig, err = coalesceDaemonConfigAndBootstrap(hostBootstrap, daemonConfig); err != nil {
return fmt.Errorf("merging daemon config into bootstrap data: %w", err)
}

18
entrypoint/src/cmd/entrypoint/daemon_util.go
View File

@ -9,11 +9,11 @@ import (
"time"
)
func mergeDaemonConfigIntoBootstrap(
func coalesceDaemonConfigAndBootstrap(
hostBootstrap bootstrap.Bootstrap,
daemonConfig daemon.Config,
) (
bootstrap.Bootstrap, error,
bootstrap.Bootstrap, daemon.Config, error,
) {
host := bootstrap.Host{
@ -26,28 +26,30 @@ func mergeDaemonConfigIntoBootstrap(
if allocs := daemonConfig.Storage.Allocations; len(allocs) > 0 {
for _, alloc := range allocs {
for i, alloc := range allocs {
id, err := garage.InitAlloc(alloc.MetaPath)
id, rpcPort, err := garage.InitAlloc(alloc.MetaPath, alloc.RPCPort)
if err != nil {
return bootstrap.Bootstrap{}, fmt.Errorf("initializing alloc at %q: %w", alloc.MetaPath, err)
return bootstrap.Bootstrap{}, daemon.Config{}, fmt.Errorf("initializing alloc at %q: %w", alloc.MetaPath, err)
}
host.Garage.Instances = append(host.Garage.Instances, bootstrap.GarageHostInstance{
ID: id,
RPCPort: alloc.RPCPort,
RPCPort: rpcPort,
S3APIPort: alloc.S3APIPort,
})
allocs[i].RPCPort = rpcPort
}
}
hostBootstrap.Hosts[host.Name] = host
if err := writeBootstrapToDataDir(hostBootstrap); err != nil {
return bootstrap.Bootstrap{}, fmt.Errorf("writing bootstrap file: %w", err)
return bootstrap.Bootstrap{}, daemon.Config{}, fmt.Errorf("writing bootstrap file: %w", err)
}
return hostBootstrap, nil
return hostBootstrap, daemonConfig, nil
}
func doOnce(ctx context.Context, fn func(context.Context) error) error {

2
entrypoint/src/cmd/entrypoint/garage_util.go
View File

@ -89,7 +89,7 @@ func waitForGarageAndNebula(
// corresponds with the given alloc from the daemon config. This will panic if
// no associated instance can be found.
//
// This assumes that mergeDaemonConfigIntoBootstrap has already been called.
// This assumes that coalesceDaemonConfigAndBootstrap has already been called.
func bootstrapGarageHostForAlloc(
host bootstrap.Host,
alloc daemon.ConfigStorageAllocation,

82
entrypoint/src/garage/garage.go
View File

@ -9,6 +9,7 @@ import (
"io/fs"
"os"
"path/filepath"
"strconv"
)
const (
@ -33,9 +34,13 @@ func nodeKeyPubPath(metaDirPath string) string {
return filepath.Join(metaDirPath, "node_key.pub")
}
// LoadAllocID returns the peer ID (ie the public key) of the node at the given
func nodeRPCPortPath(metaDirPath string) string {
return filepath.Join(metaDirPath, "cryptic-net", "rpc_port")
}
// loadAllocID returns the peer ID (ie the public key) of the node at the given
// meta directory.
func LoadAllocID(metaDirPath string) (string, error) {
func loadAllocID(metaDirPath string) (string, error) {
nodeKeyPubPath := nodeKeyPubPath(metaDirPath)
pubKey, err := os.ReadFile(nodeKeyPubPath)
@ -48,8 +53,13 @@ func LoadAllocID(metaDirPath string) (string, error) {
// InitAlloc initializes the meta directory and keys for a particular
// allocation, if it hasn't been done so already. It returns the peer ID (ie the
// public key) in any case.
func InitAlloc(metaDirPath string) (string, error) {
// public key) and the rpc port in any case.
func InitAlloc(metaDirPath string, initRPCPort int) (string, int, error) {
initDirFor := func(path string) error {
dir := filepath.Dir(path)
return os.MkdirAll(dir, 0750)
}
var err error
@ -72,34 +82,72 @@ func InitAlloc(metaDirPath string) (string, error) {
nodeKeyPath := nodeKeyPath(metaDirPath)
nodeKeyPubPath := nodeKeyPubPath(metaDirPath)
nodeRPCPortPath := nodeRPCPortPath(metaDirPath)
nodeKeyPathExists := exists(nodeKeyPath)
nodeKeyPubPathExists := exists(nodeKeyPubPath)
nodeRPCPortPathExists := exists(nodeRPCPortPath)
if err != nil {
return "", err
return "", 0, err
} else if nodeKeyPubPathExists != nodeKeyPathExists {
return "", fmt.Errorf("%q or %q exist without the other existing", nodeKeyPath, nodeKeyPubPath)
return "", 0, fmt.Errorf("%q or %q exist without the other existing", nodeKeyPath, nodeKeyPubPath)
} else if nodeKeyPathExists {
return LoadAllocID(metaDirPath)
}
// node key hasn't been written, write it
var (
pubKeyStr string
rpcPort int
)
if err := os.MkdirAll(metaDirPath, 0750); err != nil {
return "", fmt.Errorf("making directory %q: %w", metaDirPath, err)
if nodeKeyPathExists {
if pubKeyStr, err = loadAllocID(metaDirPath); err != nil {
return "", 0, fmt.Errorf("reading node public key file: %w", err)
}
} else {
if err := initDirFor(nodeKeyPath); err != nil {
return "", 0, fmt.Errorf("creating directory for %q: %w", nodeKeyPath, err)
}
pubKey, privKey := GeneratePeerKey()
if err := os.WriteFile(nodeKeyPath, privKey, 0400); err != nil {
return "", 0, fmt.Errorf("writing private key to %q: %w", nodeKeyPath, err)
} else if err := os.WriteFile(nodeKeyPubPath, pubKey, 0440); err != nil {
return "", 0, fmt.Errorf("writing public key to %q: %w", nodeKeyPubPath, err)
}
pubKeyStr = hex.EncodeToString(pubKey)
}
pubKey, privKey := GeneratePeerKey()
if nodeRPCPortPathExists {
if err := os.WriteFile(nodeKeyPath, privKey, 0400); err != nil {
return "", fmt.Errorf("writing private key to %q: %w", nodeKeyPath, err)
if rpcPortStr, err := os.ReadFile(nodeRPCPortPath); err != nil {
return "", 0, fmt.Errorf("reading rpc port from %q: %w", nodeRPCPortPath, err)
} else if err := os.WriteFile(nodeKeyPubPath, pubKey, 0440); err != nil {
return "", fmt.Errorf("writing public key to %q: %w", nodeKeyPubPath, err)
} else if rpcPort, err = strconv.Atoi(string(rpcPortStr)); err != nil {
return "", 0, fmt.Errorf("parsing rpc port %q from %q: %w", rpcPortStr, nodeRPCPortPath, err)
}
} else {
if err := initDirFor(nodeRPCPortPath); err != nil {
return "", 0, fmt.Errorf("creating directory for %q: %w", nodeRPCPortPath, err)
}
rpcPortStr := strconv.Itoa(initRPCPort)
if err := os.WriteFile(nodeRPCPortPath, []byte(rpcPortStr), 0440); err != nil {
return "", 0, fmt.Errorf("writing rpc port %q to %q: %w", rpcPortStr, nodeRPCPortPath, err)
}
rpcPort = initRPCPort
}
return hex.EncodeToString(pubKey), nil
return pubKeyStr, rpcPort, nil
}