Factor out garage-entrypoint

The daemon entrypoint now starts the garage child processes directly,
without the extra step of indirection
This commit is contained in:
Brian Picciano 2022-10-16 20:33:31 +02:00
parent 18422a1084
commit cf00561206
7 changed files with 331 additions and 325 deletions

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@ -17,6 +17,7 @@ state AppDir {
entrypoint : * Merge given and default daemon.yml files entrypoint : * Merge given and default daemon.yml files
entrypoint : * Copy bootstrap.tgz into $_DATA_DIR_PATH, if it's not there entrypoint : * Copy bootstrap.tgz into $_DATA_DIR_PATH, if it's not there
entrypoint : * Merge daemon.yml config into bootstrap.tgz entrypoint : * Merge daemon.yml config into bootstrap.tgz
entrypoint : * Create $_RUNTIME_DIR_PATH/garage-N.toml\n (one per storage allocation)
entrypoint : * Run child processes entrypoint : * Run child processes
} }
@ -41,20 +42,17 @@ state AppDir {
entrypoint --> nebulaEntrypoint : child entrypoint --> nebulaEntrypoint : child
nebulaEntrypoint --> nebula : exec nebulaEntrypoint --> nebula : exec
state "./bin/cryptic-net-main garage-entrypoint" as garageEntrypoint { state "Garage processes (only if any storage allocs are defined)" as garageChildren {
garageEntrypoint : * Create $_RUNTIME_DIR_PATH/garage-N.toml\n (one per storage allocation)
garageEntrypoint : * Run child processes state "./bin/garage -c $_RUNTIME_DIR_PATH/garage-N.toml server" as garage
state "./bin/garage-apply-layout-diff" as garageApplyLayoutDiff {
garageApplyLayoutDiff : * Runs once then exits
garageApplyLayoutDiff : * Updates cluster topo
}
} }
state "./bin/garage -c $_RUNTIME_DIR_PATH/garage-N.toml server" as garage entrypoint --> garage : child (one per storage allocation)
state "./bin/garage-apply-layout-diff" as garageApplyLayoutDiff { entrypoint --> garageApplyLayoutDiff : child
garageApplyLayoutDiff : * Runs once then exits
garageApplyLayoutDiff : * Updates cluster topo
}
entrypoint --> garageEntrypoint : child (only if >1 storage allocation defined in daemon.yml)
garageEntrypoint --> garage : child (one per storage allocation)
garageEntrypoint --> garageApplyLayoutDiff : child
state "./bin/cryptic-net-main update-global-bucket" as updateGlobalBucket { state "./bin/cryptic-net-main update-global-bucket" as updateGlobalBucket {
updateGlobalBucket : * Runs once then exits updateGlobalBucket : * Runs once then exits

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@ -16,7 +16,6 @@ package main
import ( import (
"cryptic-net/cmd/entrypoint" "cryptic-net/cmd/entrypoint"
garage_entrypoint "cryptic-net/cmd/garage-entrypoint"
garage_layout_diff "cryptic-net/cmd/garage-layout-diff" garage_layout_diff "cryptic-net/cmd/garage-layout-diff"
garage_peer_keygen "cryptic-net/cmd/garage-peer-keygen" garage_peer_keygen "cryptic-net/cmd/garage-peer-keygen"
nebula_entrypoint "cryptic-net/cmd/nebula-entrypoint" nebula_entrypoint "cryptic-net/cmd/nebula-entrypoint"
@ -32,7 +31,6 @@ type mainFn struct {
var mainFns = []mainFn{ var mainFns = []mainFn{
{"entrypoint", entrypoint.Main}, {"entrypoint", entrypoint.Main},
{"garage-entrypoint", garage_entrypoint.Main},
{"garage-layout-diff", garage_layout_diff.Main}, {"garage-layout-diff", garage_layout_diff.Main},
{"garage-peer-keygen", garage_peer_keygen.Main}, {"garage-peer-keygen", garage_peer_keygen.Main},
{"nebula-entrypoint", nebula_entrypoint.Main}, {"nebula-entrypoint", nebula_entrypoint.Main},

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@ -5,23 +5,16 @@ import (
"context" "context"
"errors" "errors"
"fmt" "fmt"
"io"
"io/ioutil"
"net"
"os" "os"
"path/filepath" "path/filepath"
"strconv"
"sync" "sync"
"time" "time"
crypticnet "cryptic-net" crypticnet "cryptic-net"
"cryptic-net/bootstrap" "cryptic-net/bootstrap"
"cryptic-net/garage" "cryptic-net/garage"
"cryptic-net/yamlutil"
"github.com/cryptic-io/pmux/pmuxlib" "github.com/cryptic-io/pmux/pmuxlib"
"github.com/imdario/mergo"
"gopkg.in/yaml.v3"
) )
// The daemon sub-command deals with starting an actual cryptic-net daemon // The daemon sub-command deals with starting an actual cryptic-net daemon
@ -46,70 +39,6 @@ import (
// //
// * (On exit) cleans up the runtime directory. // * (On exit) cleans up the runtime directory.
func writeDaemonYml(userDaemonYmlPath, builtinDaemonYmlPath, runtimeDirPath string) error {
var fullDaemonYml map[string]interface{}
if err := yamlutil.LoadYamlFile(&fullDaemonYml, builtinDaemonYmlPath); err != nil {
return fmt.Errorf("parsing builtin daemon.yml file: %w", err)
}
if userDaemonYmlPath != "" {
var daemonYml map[string]interface{}
if err := yamlutil.LoadYamlFile(&daemonYml, userDaemonYmlPath); err != nil {
return fmt.Errorf("parsing %q: %w", userDaemonYmlPath, err)
}
err := mergo.Merge(&fullDaemonYml, daemonYml, mergo.WithOverride)
if err != nil {
return fmt.Errorf("merging contents of file %q: %w", userDaemonYmlPath, err)
}
}
fullDaemonYmlB, err := yaml.Marshal(fullDaemonYml)
if err != nil {
return fmt.Errorf("yaml marshaling daemon config: %w", err)
}
daemonYmlPath := filepath.Join(runtimeDirPath, "daemon.yml")
if err := ioutil.WriteFile(daemonYmlPath, fullDaemonYmlB, 0400); err != nil {
return fmt.Errorf("writing daemon.yml file to %q: %w", daemonYmlPath, err)
}
return nil
}
func copyBootstrapToDataDir(env *crypticnet.Env, r io.Reader) error {
path := env.DataDirBootstrapPath()
dirPath := filepath.Dir(path)
if err := os.MkdirAll(dirPath, 0700); err != nil {
return fmt.Errorf("creating directory %q: %w", dirPath, err)
}
f, err := os.Create(path)
if err != nil {
return fmt.Errorf("creating file %q: %w", path, err)
}
_, err = io.Copy(f, r)
f.Close()
if err != nil {
return fmt.Errorf("copying bootstrap file to %q: %w", path, err)
}
if err := env.LoadBootstrap(path); err != nil {
return fmt.Errorf("loading bootstrap from %q: %w", path, err)
}
return nil
}
// creates a new bootstrap file using available information from the network. If // creates a new bootstrap file using available information from the network. If
// the new bootstrap file is different than the existing one, the existing one // the new bootstrap file is different than the existing one, the existing one
// is overwritten, ReloadBootstrap is called on env, true is returned. // is overwritten, ReloadBootstrap is called on env, true is returned.
@ -156,65 +85,31 @@ func runDaemonPmuxOnce(env *crypticnet.Env, s3Client garage.S3APIClient) error {
fmt.Fprintf(os.Stderr, "host name is %q, ip is %q\n", thisHost.Name, thisHost.Nebula.IP) fmt.Fprintf(os.Stderr, "host name is %q, ip is %q\n", thisHost.Name, thisHost.Nebula.IP)
pmuxProcConfigs := []pmuxlib.ProcessConfig{ pmuxProcConfigs := []pmuxlib.ProcessConfig{
{ nebulaEntrypointPmuxProcConfig(),
Name: "nebula",
Cmd: "cryptic-net-main",
Args: []string{
"nebula-entrypoint",
},
},
{ {
Name: "dnsmasq", Name: "dnsmasq",
Cmd: "bash", Cmd: "bash",
Args: []string{ Args: waitForNebulaArgs(env, "dnsmasq-entrypoint"),
"wait-for-ip",
thisHost.Nebula.IP,
"dnsmasq-entrypoint",
},
}, },
} }
{ if len(thisDaemon.Storage.Allocations) > 0 {
var args []string
if allocs := thisDaemon.Storage.Allocations; len(allocs) > 0 { garageChildrenPmuxProcConfigs, err := garageChildrenPmuxProcConfigs(env)
for _, alloc := range allocs { if err != nil {
args = append( return fmt.Errorf("generating garage children configs: %w", err)
args,
"wait-for",
net.JoinHostPort(thisHost.Nebula.IP, strconv.Itoa(alloc.RPCPort)),
"--",
)
}
} else {
args = []string{
"wait-for-ip",
thisHost.Nebula.IP,
}
} }
pmuxProcConfigs = append(pmuxProcConfigs, pmuxlib.ProcessConfig{ pmuxProcConfigs = append(pmuxProcConfigs, garageChildrenPmuxProcConfigs...)
Name: "update-global-bucket", pmuxProcConfigs = append(pmuxProcConfigs, garageApplyLayoutDiffPmuxProcConfig(env))
Cmd: "bash",
Args: append(args, "update-global-bucket"),
NoRestartOn: []int{0},
})
} }
if len(thisDaemon.Storage.Allocations) > 0 { pmuxProcConfigs = append(pmuxProcConfigs, pmuxlib.ProcessConfig{
pmuxProcConfigs = append(pmuxProcConfigs, pmuxlib.ProcessConfig{ Name: "update-global-bucket",
Name: "garage", Cmd: "bash",
Cmd: "bash", Args: waitForGarageArgs(env, "update-global-bucket"),
Args: []string{ NoRestartOn: []int{0},
"wait-for-ip", })
thisHost.Nebula.IP,
"cryptic-net-main", "garage-entrypoint",
},
// garage can take a while to clean up
SigKillWait: (1 * time.Minute) + (10 * time.Second),
})
}
pmuxConfig := pmuxlib.Config{Processes: pmuxProcConfigs} pmuxConfig := pmuxlib.Config{Processes: pmuxProcConfigs}
@ -360,48 +255,17 @@ var subCmdDaemon = subCmd{
} }
} }
if err := writeDaemonYml(*daemonYmlPath, builtinDaemonYmlPath, runtimeDirPath); err != nil { if err := writeMergedDaemonYml(env, *daemonYmlPath); err != nil {
return fmt.Errorf("generating daemon.yml file: %w", err) return fmt.Errorf("generating daemon.yml file: %w", err)
} }
{ // we update this Host's data using whatever configuration has been
// we update this Host's data using whatever configuration has been // provided by daemon.yml. This way the daemon has the most
// provided by daemon.yml. This way the daemon has the most // up-to-date possible bootstrap. This updated bootstrap will later
// up-to-date possible bootstrap. This updated bootstrap will later // get updated in garage using update-global-bucket, so other hosts
// get updated in garage using update-global-bucket, so other hosts // will see it as well.
// will see it as well. if err := mergeDaemonIntoBootstrap(env); err != nil {
return fmt.Errorf("merging daemon.yml into bootstrap data: %w", err)
// ThisDaemon can only be called after writeDaemonYml.
daemon := env.ThisDaemon()
host := env.Bootstrap.ThisHost()
host.Nebula.PublicAddr = daemon.VPN.PublicAddr
host.Garage = nil
if allocs := daemon.Storage.Allocations; len(allocs) > 0 {
host.Garage = new(bootstrap.GarageHost)
for _, alloc := range allocs {
host.Garage.Instances = append(host.Garage.Instances, bootstrap.GarageHostInstance{
RPCPort: alloc.RPCPort,
S3APIPort: alloc.S3APIPort,
WebPort: alloc.WebPort,
})
}
}
env.Bootstrap.Hosts[host.Name] = host
buf := new(bytes.Buffer)
if err := env.Bootstrap.WithHosts(env.Bootstrap.Hosts).WriteTo(buf); err != nil {
return fmt.Errorf("writing new bootstrap file to buffer: %w", err)
}
if err := copyBootstrapToDataDir(env, buf); err != nil {
return fmt.Errorf("copying new bootstrap file to data dir: %w", err)
}
} }
for key, val := range env.ToMap() { for key, val := range env.ToMap() {

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@ -0,0 +1,205 @@
package entrypoint
import (
"bytes"
crypticnet "cryptic-net"
"cryptic-net/bootstrap"
"cryptic-net/garage"
"fmt"
"io"
"net"
"os"
"path/filepath"
"strconv"
"time"
"github.com/cryptic-io/pmux/pmuxlib"
)
func copyBootstrapToDataDir(env *crypticnet.Env, r io.Reader) error {
path := env.DataDirBootstrapPath()
dirPath := filepath.Dir(path)
if err := os.MkdirAll(dirPath, 0700); err != nil {
return fmt.Errorf("creating directory %q: %w", dirPath, err)
}
f, err := os.Create(path)
if err != nil {
return fmt.Errorf("creating file %q: %w", path, err)
}
_, err = io.Copy(f, r)
f.Close()
if err != nil {
return fmt.Errorf("copying bootstrap file to %q: %w", path, err)
}
if err := env.LoadBootstrap(path); err != nil {
return fmt.Errorf("loading bootstrap from %q: %w", path, err)
}
return nil
}
func mergeDaemonIntoBootstrap(env *crypticnet.Env) error {
daemon := env.ThisDaemon()
host := env.Bootstrap.ThisHost()
host.Nebula.PublicAddr = daemon.VPN.PublicAddr
host.Garage = nil
if allocs := daemon.Storage.Allocations; len(allocs) > 0 {
host.Garage = new(bootstrap.GarageHost)
for _, alloc := range allocs {
host.Garage.Instances = append(host.Garage.Instances, bootstrap.GarageHostInstance{
RPCPort: alloc.RPCPort,
S3APIPort: alloc.S3APIPort,
WebPort: alloc.WebPort,
})
}
}
env.Bootstrap.Hosts[host.Name] = host
buf := new(bytes.Buffer)
if err := env.Bootstrap.WithHosts(env.Bootstrap.Hosts).WriteTo(buf); err != nil {
return fmt.Errorf("writing new bootstrap file to buffer: %w", err)
}
if err := copyBootstrapToDataDir(env, buf); err != nil {
return fmt.Errorf("copying new bootstrap file to data dir: %w", err)
}
return nil
}
func waitForNebulaArgs(env *crypticnet.Env, args ...string) []string {
thisHost := env.Bootstrap.ThisHost()
return append([]string{"wait-for-ip", thisHost.Nebula.IP}, args...)
}
func waitForGarageArgs(env *crypticnet.Env, args ...string) []string {
thisHost := env.Bootstrap.ThisHost()
allocs := env.ThisDaemon().Storage.Allocations
if len(allocs) == 0 {
return waitForNebulaArgs(env, args...)
}
var preArgs []string
for _, alloc := range allocs {
preArgs = append(
preArgs,
"wait-for",
net.JoinHostPort(thisHost.Nebula.IP, strconv.Itoa(alloc.RPCPort)),
"--",
)
}
return append(preArgs, args...)
}
func nebulaEntrypointPmuxProcConfig() pmuxlib.ProcessConfig {
return pmuxlib.ProcessConfig{
Name: "nebula",
Cmd: "cryptic-net-main",
Args: []string{
"nebula-entrypoint",
},
}
}
func garageWriteChildConf(
env *crypticnet.Env,
alloc crypticnet.DaemonYmlStorageAllocation,
) (
string, error,
) {
if err := os.MkdirAll(alloc.MetaPath, 0750); err != nil {
return "", fmt.Errorf("making directory %q: %w", alloc.MetaPath, err)
}
thisHost := env.Bootstrap.ThisHost()
peer := garage.Peer{
IP: thisHost.Nebula.IP,
RPCPort: alloc.RPCPort,
S3APIPort: alloc.S3APIPort,
}
pubKey, privKey := peer.RPCPeerKey()
nodeKeyPath := filepath.Join(alloc.MetaPath, "node_key")
nodeKeyPubPath := filepath.Join(alloc.MetaPath, "node_keypub")
if err := os.WriteFile(nodeKeyPath, privKey, 0400); err != nil {
return "", fmt.Errorf("writing private key to %q: %w", nodeKeyPath, err)
} else if err := os.WriteFile(nodeKeyPubPath, pubKey, 0440); err != nil {
return "", fmt.Errorf("writing public key to %q: %w", nodeKeyPubPath, err)
}
garageTomlPath := filepath.Join(
env.RuntimeDirPath, fmt.Sprintf("garage-%d.toml", alloc.RPCPort),
)
err := garage.WriteGarageTomlFile(garageTomlPath, garage.GarageTomlData{
MetaPath: alloc.MetaPath,
DataPath: alloc.DataPath,
RPCSecret: env.Bootstrap.GarageRPCSecret,
RPCAddr: net.JoinHostPort(thisHost.Nebula.IP, strconv.Itoa(alloc.RPCPort)),
APIAddr: net.JoinHostPort(thisHost.Nebula.IP, strconv.Itoa(alloc.S3APIPort)),
WebAddr: net.JoinHostPort(thisHost.Nebula.IP, strconv.Itoa(alloc.WebPort)),
BootstrapPeers: env.Bootstrap.GarageRPCPeerAddrs(),
})
if err != nil {
return "", fmt.Errorf("creating garage.toml file at %q: %w", garageTomlPath, err)
}
return garageTomlPath, nil
}
func garageChildrenPmuxProcConfigs(env *crypticnet.Env) ([]pmuxlib.ProcessConfig, error) {
var pmuxProcConfigs []pmuxlib.ProcessConfig
for _, alloc := range env.ThisDaemon().Storage.Allocations {
childConfPath, err := garageWriteChildConf(env, alloc)
if err != nil {
return nil, fmt.Errorf("writing child config file for alloc %+v: %w", alloc, err)
}
pmuxProcConfigs = append(pmuxProcConfigs, pmuxlib.ProcessConfig{
Name: fmt.Sprintf("garage-%d", alloc.RPCPort),
Cmd: "garage",
Args: []string{"-c", childConfPath, "server"},
SigKillWait: 1 * time.Minute,
})
}
return pmuxProcConfigs, nil
}
func garageApplyLayoutDiffPmuxProcConfig(env *crypticnet.Env) pmuxlib.ProcessConfig {
return pmuxlib.ProcessConfig{
Name: "garage-apply-layout-diff",
Cmd: "bash",
Args: waitForGarageArgs(env, "bash", "garage-apply-layout-diff"),
NoRestartOn: []int{0},
}
}

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@ -0,0 +1,72 @@
package entrypoint
import (
crypticnet "cryptic-net"
"cryptic-net/yamlutil"
"fmt"
"io"
"io/ioutil"
"os"
"path/filepath"
"github.com/imdario/mergo"
"gopkg.in/yaml.v3"
)
func builtinDaemonYmlPath(env *crypticnet.Env) string {
return filepath.Join(env.AppDirPath, "etc", "daemon.yml")
}
func writeBuiltinDaemonYml(env *crypticnet.Env, w io.Writer) error {
builtinDaemonYmlPath := builtinDaemonYmlPath(env)
builtinDaemonYml, err := os.ReadFile(builtinDaemonYmlPath)
if err != nil {
return fmt.Errorf("reading default daemon.yml at %q: %w", builtinDaemonYmlPath, err)
}
if _, err := w.Write(builtinDaemonYml); err != nil {
return fmt.Errorf("writing default daemon.yml: %w", err)
}
return nil
}
func writeMergedDaemonYml(env *crypticnet.Env, userDaemonYmlPath string) error {
builtinDaemonYmlPath := builtinDaemonYmlPath(env)
var fullDaemonYml map[string]interface{}
if err := yamlutil.LoadYamlFile(&fullDaemonYml, builtinDaemonYmlPath); err != nil {
return fmt.Errorf("parsing builtin daemon.yml file: %w", err)
}
if userDaemonYmlPath != "" {
var daemonYml map[string]interface{}
if err := yamlutil.LoadYamlFile(&daemonYml, userDaemonYmlPath); err != nil {
return fmt.Errorf("parsing %q: %w", userDaemonYmlPath, err)
}
err := mergo.Merge(&fullDaemonYml, daemonYml, mergo.WithOverride)
if err != nil {
return fmt.Errorf("merging contents of file %q: %w", userDaemonYmlPath, err)
}
}
fullDaemonYmlB, err := yaml.Marshal(fullDaemonYml)
if err != nil {
return fmt.Errorf("yaml marshaling daemon config: %w", err)
}
daemonYmlPath := filepath.Join(env.RuntimeDirPath, "daemon.yml")
if err := ioutil.WriteFile(daemonYmlPath, fullDaemonYmlB, 0400); err != nil {
return fmt.Errorf("writing daemon.yml file to %q: %w", daemonYmlPath, err)
}
return nil
}

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@ -1,129 +0,0 @@
package garage_entrypoint
import (
"fmt"
"log"
"net"
"os"
"path/filepath"
"strconv"
"time"
crypticnet "cryptic-net"
"cryptic-net/garage"
"github.com/cryptic-io/pmux/pmuxlib"
)
func writeChildConf(
env *crypticnet.Env,
alloc crypticnet.DaemonYmlStorageAllocation,
) (string, error) {
if err := os.MkdirAll(alloc.MetaPath, 0750); err != nil {
return "", fmt.Errorf("making directory %q: %w", alloc.MetaPath, err)
}
thisHost := env.Bootstrap.ThisHost()
peer := garage.Peer{
IP: thisHost.Nebula.IP,
RPCPort: alloc.RPCPort,
S3APIPort: alloc.S3APIPort,
}
pubKey, privKey := peer.RPCPeerKey()
nodeKeyPath := filepath.Join(alloc.MetaPath, "node_key")
nodeKeyPubPath := filepath.Join(alloc.MetaPath, "node_keypub")
if err := os.WriteFile(nodeKeyPath, privKey, 0400); err != nil {
return "", fmt.Errorf("writing private key to %q: %w", nodeKeyPath, err)
} else if err := os.WriteFile(nodeKeyPubPath, pubKey, 0440); err != nil {
return "", fmt.Errorf("writing public key to %q: %w", nodeKeyPubPath, err)
}
garageTomlPath := filepath.Join(
env.RuntimeDirPath, fmt.Sprintf("garage-%d.toml", alloc.RPCPort),
)
err := garage.WriteGarageTomlFile(garageTomlPath, garage.GarageTomlData{
MetaPath: alloc.MetaPath,
DataPath: alloc.DataPath,
RPCSecret: env.Bootstrap.GarageRPCSecret,
RPCAddr: net.JoinHostPort(thisHost.Nebula.IP, strconv.Itoa(alloc.RPCPort)),
APIAddr: net.JoinHostPort(thisHost.Nebula.IP, strconv.Itoa(alloc.S3APIPort)),
WebAddr: net.JoinHostPort(thisHost.Nebula.IP, strconv.Itoa(alloc.WebPort)),
BootstrapPeers: env.Bootstrap.GarageRPCPeerAddrs(),
})
if err != nil {
return "", fmt.Errorf("creating garage.toml file at %q: %w", garageTomlPath, err)
}
return garageTomlPath, nil
}
func waitForArgs(env *crypticnet.Env, bin string, binArgs ...string) []string {
thisHost := env.Bootstrap.ThisHost()
var args []string
for _, alloc := range env.ThisDaemon().Storage.Allocations {
args = append(
args,
"wait-for",
net.JoinHostPort(thisHost.Nebula.IP, strconv.Itoa(alloc.RPCPort)),
"--",
)
}
args = append(args, bin)
args = append(args, binArgs...)
return args
}
func Main() {
env, err := crypticnet.ReadEnv()
if err != nil {
log.Fatalf("reading envvars: %v", err)
}
var pmuxProcConfigs []pmuxlib.ProcessConfig
for _, alloc := range env.ThisDaemon().Storage.Allocations {
childConfPath, err := writeChildConf(env, alloc)
if err != nil {
log.Fatalf("writing child config file for alloc %+v: %v", alloc, err)
}
log.Printf("wrote config file %q", childConfPath)
pmuxProcConfigs = append(pmuxProcConfigs, pmuxlib.ProcessConfig{
Name: fmt.Sprintf("garage-%d", alloc.RPCPort),
Cmd: "garage",
Args: []string{"-c", childConfPath, "server"},
SigKillWait: 1 * time.Minute,
})
}
pmuxProcConfigs = append(pmuxProcConfigs, pmuxlib.ProcessConfig{
Name: "garage-apply-layout-diff",
Cmd: "bash",
Args: waitForArgs(env, "bash", "garage-apply-layout-diff"),
NoRestartOn: []int{0},
})
pmuxlib.Run(env.Context, pmuxlib.Config{Processes: pmuxProcConfigs})
}