// main is the application's entry point. It will either spawn a CLI or HTTP itnerfaces.
func main() {
configFile := flag.String("config", "", "config file name")
command := flag.String("c", "", "command (discover|forget|continuous|move-up|move-below|begin-maintenance|end-maintenance|clusters|topology)")
strict := flag.Bool("strict", false, "strict mode (more checks, slower)")
instance := flag.String("i", "", "instance, host:port")
sibling := flag.String("s", "", "sibling instance, host:port")
owner := flag.String("owner", "", "operation owner")
reason := flag.String("reason", "", "operation reason")
duration := flag.String("duration", "", "maintenance duration (format: 59s, 59m, 23h, 6d, 4w)")
pattern := flag.String("pattern", "", "regular expression pattern")
clusterAlias := flag.String("alias", "", "cluster alias")
pool := flag.String("pool", "", "Pool logical name (applies for pool-related commands)")
hostnameFlag := flag.String("hostname", "", "Hostname/fqdn/CNAME/VIP (applies for hostname/resolve related commands)")
discovery := flag.Bool("discovery", true, "auto discovery mode")
verbose := flag.Bool("verbose", false, "verbose")
debug := flag.Bool("debug", false, "debug mode (very verbose)")
stack := flag.Bool("stack", false, "add stack trace upon error")
config.RuntimeCLIFlags.SkipUnresolveCheck = flag.Bool("skip-unresolve-check", false, "Skip/ignore checking an unresolve mapping (via hostname_unresolve table) resolves back to same hostname")
config.RuntimeCLIFlags.Noop = flag.Bool("noop", false, "Dry run; do not perform destructing operations")
flag.Parse()
log.SetLevel(log.ERROR)
if *verbose {
log.SetLevel(log.INFO)
}
if *debug {
log.SetLevel(log.DEBUG)
}
if *stack {
log.SetPrintStackTrace(*stack)
}
log.Info("starting")
runtime.GOMAXPROCS(math.MinInt(4, runtime.NumCPU()))
if len(*configFile) > 0 {
config.ForceRead(*configFile)
} else {
config.Read("/etc/orchestrator.conf.json", "conf/orchestrator.conf.json", "orchestrator.conf.json")
}
if config.Config.Debug {
log.SetLevel(log.DEBUG)
}
if len(flag.Args()) == 0 && *command == "" {
// No command, no argument: just prompt
fmt.Println(prompt)
return
}
switch {
case len(flag.Args()) == 0 || flag.Arg(0) == "cli":
app.Cli(*command, *strict, *instance, *sibling, *owner, *reason, *duration, *pattern, *clusterAlias, *pool, *hostnameFlag)
case flag.Arg(0) == "http":
app.Http(*discovery)
default:
log.Error("Usage: orchestrator --options... [cli|http]")
}
}
// main is the application's entry point. It will either spawn a CLI or HTTP itnerfaces.
func main() {
configFile := flag.String("config", "", "config file name")
verbose := flag.Bool("verbose", false, "verbose")
debug := flag.Bool("debug", false, "debug mode (very verbose)")
stack := flag.Bool("stack", false, "add stack trace upon error")
flag.Parse()
log.SetLevel(log.ERROR)
if *verbose {
log.SetLevel(log.INFO)
}
if *debug {
log.SetLevel(log.DEBUG)
}
if *stack {
log.SetPrintStackTrace(*stack)
}
log.Info("starting")
if len(*configFile) > 0 {
config.ForceRead(*configFile)
} else {
config.Read("/etc/orchestrator-agent.conf.json", "conf/orchestrator-agent.conf.json", "orchestrator-agent.conf.json")
}
if len(config.Config.AgentsServer) == 0 {
log.Fatal("AgentsServer unconfigured. Please set to the HTTP address orchestrator serves agents (port is by default 3001)")
}
log.Debugf("Process token: %s", agent.ProcessToken.Hash)
go acceptSignal()
app.Http()
}
// main is the application's entry point. It will either spawn a CLI or HTTP itnerfaces.
func main() {
configFile := flag.String("config", "", "config file name")
command := flag.String("c", "", "command, required. See full list of commands via 'orchestrator -c help'")
strict := flag.Bool("strict", false, "strict mode (more checks, slower)")
instance := flag.String("i", "", "instance, host_fqdn[:port] (e.g. db.company.com:3306, db.company.com)")
sibling := flag.String("s", "", "sibling instance, host_fqdn[:port]")
destination := flag.String("d", "", "destination instance, host_fqdn[:port] (synonym to -s)")
owner := flag.String("owner", "", "operation owner")
reason := flag.String("reason", "", "operation reason")
duration := flag.String("duration", "", "maintenance duration (format: 59s, 59m, 23h, 6d, 4w)")
pattern := flag.String("pattern", "", "regular expression pattern")
clusterAlias := flag.String("alias", "", "cluster alias")
pool := flag.String("pool", "", "Pool logical name (applies for pool-related commands)")
hostnameFlag := flag.String("hostname", "", "Hostname/fqdn/CNAME/VIP (applies for hostname/resolve related commands)")
discovery := flag.Bool("discovery", true, "auto discovery mode")
quiet := flag.Bool("quiet", false, "quiet")
verbose := flag.Bool("verbose", false, "verbose")
debug := flag.Bool("debug", false, "debug mode (very verbose)")
stack := flag.Bool("stack", false, "add stack trace upon error")
config.RuntimeCLIFlags.Databaseless = flag.Bool("databaseless", false, "EXPERIMENTAL! Work without backend database")
config.RuntimeCLIFlags.SkipUnresolveCheck = flag.Bool("skip-unresolve-check", false, "Skip/ignore checking an unresolve mapping (via hostname_unresolve table) resolves back to same hostname")
config.RuntimeCLIFlags.Noop = flag.Bool("noop", false, "Dry run; do not perform destructing operations")
config.RuntimeCLIFlags.BinlogFile = flag.String("binlog", "", "Binary log file name")
flag.Parse()
if *destination != "" && *sibling != "" {
log.Fatalf("-s and -d are synonyms, yet both were specified. You're probably doing the wrong thing.")
}
if *destination == "" {
*destination = *sibling
}
log.SetLevel(log.ERROR)
if *verbose {
log.SetLevel(log.INFO)
}
if *debug {
log.SetLevel(log.DEBUG)
}
if *stack {
log.SetPrintStackTrace(*stack)
}
log.Info("starting")
runtime.GOMAXPROCS(math.MinInt(4, runtime.NumCPU()))
if len(*configFile) > 0 {
config.ForceRead(*configFile)
} else {
config.Read("/etc/orchestrator.conf.json", "conf/orchestrator.conf.json", "orchestrator.conf.json")
}
if *config.RuntimeCLIFlags.Databaseless {
config.Config.DatabaselessMode__experimental = true
}
if config.Config.Debug {
log.SetLevel(log.DEBUG)
}
if *quiet {
// Override!!
log.SetLevel(log.ERROR)
}
if config.Config.EnableSyslog {
log.EnableSyslogWriter("orchestrator")
log.SetSyslogLevel(log.INFO)
}
if config.Config.AuditToSyslog {
inst.EnableAuditSyslog()
}
if len(flag.Args()) == 0 && *command == "" {
// No command, no argument: just prompt
fmt.Println(prompt)
return
}
var executionMode OrchestratorExecutionMode
switch {
case len(flag.Args()) == 0 || flag.Arg(0) == "cli":
executionMode = CliMode
case flag.Arg(0) == "http":
executionMode = HttpMode
default:
fmt.Fprintln(os.Stderr, `Usage:
orchestrator --options... [cli|http]
See complete list of commands:
orchestrator -c help
Full blown documentation:
orchestrator
`)
os.Exit(1)
}
process.ContinuousRegistration(string(executionMode))
switch executionMode {
case CliMode:
app.Cli(*command, *strict, *instance, *destination, *owner, *reason, *duration, *pattern, *clusterAlias, *pool, *hostnameFlag)
case HttpMode:
app.Http(*discovery)
}
}
// main is the application's entry point.
func main() {
servers := flag.String("servers", "", "srv1[:port1][,srv2[:port2]...]")
command := flag.String("c", "", "command, required (exists|get|ls|lsr|create|creater|set|delete|rm|deleter|rmr|getacl|setacl)")
force := flag.Bool("force", false, "force operation")
format := flag.String("format", "txt", "output format (txt|json)")
verbose := flag.Bool("verbose", false, "verbose")
debug := flag.Bool("debug", false, "debug mode (very verbose)")
stack := flag.Bool("stack", false, "add stack trace upon error")
authUser := flag.String("auth_usr", "", "optional, digest scheme, user")
authPwd := flag.String("auth_pwd", "", "optional, digest scheme, pwd")
acls := flag.String("acls", "31", "optional, csv list [1|,2|,4|,8|,16|,31]")
flag.Parse()
log.SetLevel(log.ERROR)
if *verbose {
log.SetLevel(log.INFO)
}
if *debug {
log.SetLevel(log.DEBUG)
}
if *stack {
log.SetPrintStackTrace(*stack)
}
log.Info("starting")
if *servers == "" {
log.Fatal("Expected comma delimited list of servers via --servers")
}
serversArray := strings.Split(*servers, ",")
if len(serversArray) == 0 {
log.Fatal("Expected comma delimited list of servers via --servers")
}
if len(*command) == 0 {
log.Fatal("Expected command (-c) (exists|get|ls|lsr|create|creater|set|delete|rm|deleter|rmr|getacl|setacl)")
}
if len(flag.Args()) < 1 {
log.Fatal("Expected path argument")
}
path := flag.Arg(0)
if *command == "ls" {
} else if strings.HasSuffix(path, "/") {
log.Fatal("Path must not end with '/'")
}
rand.Seed(time.Now().UnixNano())
zk.SetServers(serversArray)
if *authUser != "" && *authPwd != "" {
authExp := fmt.Sprint(*authUser, ":", *authPwd)
zk.SetAuth("digest", []byte(authExp))
}
if *command == "creater" {
*command = "create"
*force = true
}
switch *command {
case "exists":
{
if exists, err := zk.Exists(path); err == nil && exists {
output.PrintString([]byte("true"), *format)
} else {
log.Fatale(err)
}
}
case "get":
{
if result, err := zk.Get(path); err == nil {
output.PrintString(result, *format)
} else {
log.Fatale(err)
}
}
case "getacl":
{
if result, err := zk.GetACL(path); err == nil {
output.PrintStringArray(result, *format)
} else {
log.Fatale(err)
}
}
case "ls":
{
if result, err := zk.Children(path); err == nil {
output.PrintStringArray(result, *format)
} else {
log.Fatale(err)
}
}
case "lsr":
{
if result, err := zk.ChildrenRecursive(path); err == nil {
output.PrintStringArray(result, *format)
} else {
log.Fatale(err)
}
}
case "create":
{
var aclstr string
if len(flag.Args()) < 2 {
log.Fatal("Expected data argument")
}
if len(flag.Args()) >= 3 {
aclstr = flag.Arg(2)
}
if *authUser != "" && *authPwd != "" {
perms, err := zk.BuildACL("digest", *authUser, *authPwd, *acls)
if err != nil {
log.Fatale(err)
}
if result, err := zk.CreateWithACL(path, []byte(flag.Arg(1)), *force, perms); err == nil {
log.Infof("Created %+v", result)
} else {
log.Fatale(err)
}
} else {
if result, err := zk.Create(path, []byte(flag.Arg(1)), aclstr, *force); err == nil {
log.Infof("Created %+v", result)
} else {
log.Fatale(err)
}
}
}
case "set":
{
var info []byte
if len(flag.Args()) > 1 {
info = []byte(flag.Arg(1))
} else {
var err error
info, err = ioutil.ReadAll(os.Stdin)
if err != nil {
log.Fatale(err)
}
}
if result, err := zk.Set(path, info); err == nil {
log.Infof("Set %+v", result)
} else {
log.Fatale(err)
}
}
case "setacl":
{
var aclstr string
if len(flag.Args()) > 1 {
aclstr = flag.Arg(1)
} else {
var err error
data, err := ioutil.ReadAll(os.Stdin)
aclstr = string(data)
if err != nil {
log.Fatale(err)
}
}
if result, err := zk.SetACL(path, aclstr, *force); err == nil {
log.Infof("Set %+v", result)
} else {
log.Fatale(err)
}
}
case "delete", "rm":
{
if err := zk.Delete(path); err != nil {
log.Fatale(err)
}
}
case "deleter", "rmr":
{
if !(*force) {
log.Fatal("deleter (recursive) command requires --force for safety measure")
}
if err := zk.DeleteRecursive(path); err != nil {
log.Fatale(err)
}
}
default:
log.Fatalf("Unknown command: %s", *command)
}
}
// main is the application's entry point. It will either spawn a CLI or HTTP itnerfaces.
func main() {
migrationContext := base.GetMigrationContext()
flag.StringVar(&migrationContext.InspectorConnectionConfig.Key.Hostname, "host", "127.0.0.1", "MySQL hostname (preferably a replica, not the master)")
flag.IntVar(&migrationContext.InspectorConnectionConfig.Key.Port, "port", 3306, "MySQL port (preferably a replica, not the master)")
flag.StringVar(&migrationContext.CliUser, "user", "", "MySQL user")
flag.StringVar(&migrationContext.CliPassword, "password", "", "MySQL password")
flag.StringVar(&migrationContext.ConfigFile, "conf", "", "Config file")
flag.StringVar(&migrationContext.DatabaseName, "database", "", "database name (mandatory)")
flag.StringVar(&migrationContext.OriginalTableName, "table", "", "table name (mandatory)")
flag.StringVar(&migrationContext.AlterStatement, "alter", "", "alter statement (mandatory)")
flag.BoolVar(&migrationContext.CountTableRows, "exact-rowcount", false, "actually count table rows as opposed to estimate them (results in more accurate progress estimation)")
flag.BoolVar(&migrationContext.AllowedRunningOnMaster, "allow-on-master", false, "allow this migration to run directly on master. Preferably it would run on a replica")
flag.BoolVar(&migrationContext.AllowedMasterMaster, "allow-master-master", false, "explicitly allow running in a master-master setup")
flag.BoolVar(&migrationContext.NullableUniqueKeyAllowed, "allow-nullable-unique-key", false, "allow gh-ost to migrate based on a unique key with nullable columns. As long as no NULL values exist, this should be OK. If NULL values exist in chosen key, data may be corrupted. Use at your own risk!")
flag.BoolVar(&migrationContext.ApproveRenamedColumns, "approve-renamed-columns", false, "in case your `ALTER` statement renames columns, gh-ost will note that and offer its interpretation of the rename. By default gh-ost does not proceed to execute. This flag approves that gh-ost's interpretation si correct")
flag.BoolVar(&migrationContext.SkipRenamedColumns, "skip-renamed-columns", false, "in case your `ALTER` statement renames columns, gh-ost will note that and offer its interpretation of the rename. By default gh-ost does not proceed to execute. This flag tells gh-ost to skip the renamed columns, i.e. to treat what gh-ost thinks are renamed columns as unrelated columns. NOTE: you may lose column data")
executeFlag := flag.Bool("execute", false, "actually execute the alter & migrate the table. Default is noop: do some tests and exit")
flag.BoolVar(&migrationContext.TestOnReplica, "test-on-replica", false, "Have the migration run on a replica, not on the master. At the end of migration replication is stopped, and tables are swapped and immediately swap-revert. Replication remains stopped and you can compare the two tables for building trust")
flag.BoolVar(&migrationContext.MigrateOnReplica, "migrate-on-replica", false, "Have the migration run on a replica, not on the master. This will do the full migration on the replica including cut-over (as opposed to --test-on-replica)")
flag.BoolVar(&migrationContext.OkToDropTable, "ok-to-drop-table", false, "Shall the tool drop the old table at end of operation. DROPping tables can be a long locking operation, which is why I'm not doing it by default. I'm an online tool, yes?")
flag.BoolVar(&migrationContext.InitiallyDropOldTable, "initially-drop-old-table", false, "Drop a possibly existing OLD table (remains from a previous run?) before beginning operation. Default is to panic and abort if such table exists")
flag.BoolVar(&migrationContext.InitiallyDropGhostTable, "initially-drop-ghost-table", false, "Drop a possibly existing Ghost table (remains from a previous run?) before beginning operation. Default is to panic and abort if such table exists")
cutOver := flag.String("cut-over", "atomic", "choose cut-over type (default|atomic, two-step)")
flag.BoolVar(&migrationContext.SwitchToRowBinlogFormat, "switch-to-rbr", false, "let this tool automatically switch binary log format to 'ROW' on the replica, if needed. The format will NOT be switched back. I'm too scared to do that, and wish to protect you if you happen to execute another migration while this one is running")
chunkSize := flag.Int64("chunk-size", 1000, "amount of rows to handle in each iteration (allowed range: 100-100,000)")
defaultRetries := flag.Int64("default-retries", 60, "Default number of retries for various operations before panicking")
cutOverLockTimeoutSeconds := flag.Int64("cut-over-lock-timeout-seconds", 3, "Max number of seconds to hold locks on tables while attempting to cut-over (retry attempted when lock exceeds timeout)")
niceRatio := flag.Float64("nice-ratio", 0, "force being 'nice', imply sleep time per chunk time; range: [0.0..100.0]. Example values: 0 is aggressive. 1.5: for every ms spend in a rowcopy chunk, spend 1.5ms sleeping immediately after")
maxLagMillis := flag.Int64("max-lag-millis", 1500, "replication lag at which to throttle operation")
replicationLagQuery := flag.String("replication-lag-query", "", "Query that detects replication lag in seconds. Result can be a floating point (by default gh-ost issues SHOW SLAVE STATUS and reads Seconds_behind_master). If you're using pt-heartbeat, query would be something like: SELECT ROUND(UNIX_TIMESTAMP() - MAX(UNIX_TIMESTAMP(ts))) AS delay FROM my_schema.heartbeat")
throttleControlReplicas := flag.String("throttle-control-replicas", "", "List of replicas on which to check for lag; comma delimited. Example: myhost1.com:3306,myhost2.com,myhost3.com:3307")
throttleQuery := flag.String("throttle-query", "", "when given, issued (every second) to check if operation should throttle. Expecting to return zero for no-throttle, >0 for throttle. Query is issued on the migrated server. Make sure this query is lightweight")
flag.StringVar(&migrationContext.ThrottleFlagFile, "throttle-flag-file", "", "operation pauses when this file exists; hint: use a file that is specific to the table being altered")
flag.StringVar(&migrationContext.ThrottleAdditionalFlagFile, "throttle-additional-flag-file", "/tmp/gh-ost.throttle", "operation pauses when this file exists; hint: keep default, use for throttling multiple gh-ost operations")
flag.StringVar(&migrationContext.PostponeCutOverFlagFile, "postpone-cut-over-flag-file", "", "while this file exists, migration will postpone the final stage of swapping tables, and will keep on syncing the ghost table. Cut-over/swapping would be ready to perform the moment the file is deleted.")
flag.StringVar(&migrationContext.PanicFlagFile, "panic-flag-file", "", "when this file is created, gh-ost will immediately terminate, without cleanup")
flag.BoolVar(&migrationContext.DropServeSocket, "initially-drop-socket-file", false, "Should gh-ost forcibly delete an existing socket file. Be careful: this might drop the socket file of a running migration!")
flag.StringVar(&migrationContext.ServeSocketFile, "serve-socket-file", "", "Unix socket file to serve on. Default: auto-determined and advertised upon startup")
flag.Int64Var(&migrationContext.ServeTCPPort, "serve-tcp-port", 0, "TCP port to serve on. Default: disabled")
maxLoad := flag.String("max-load", "", "Comma delimited status-name=threshold. e.g: 'Threads_running=100,Threads_connected=500'. When status exceeds threshold, app throttles writes")
criticalLoad := flag.String("critical-load", "", "Comma delimited status-name=threshold, same format as `--max-load`. When status exceeds threshold, app panics and quits")
quiet := flag.Bool("quiet", false, "quiet")
verbose := flag.Bool("verbose", false, "verbose")
debug := flag.Bool("debug", false, "debug mode (very verbose)")
stack := flag.Bool("stack", false, "add stack trace upon error")
help := flag.Bool("help", false, "Display usage")
version := flag.Bool("version", false, "Print version & exit")
flag.Parse()
if *help {
fmt.Fprintf(os.Stderr, "Usage of gh-ost:\n")
flag.PrintDefaults()
return
}
if *version {
appVersion := AppVersion
if appVersion == "" {
appVersion = "unversioned"
}
fmt.Println(appVersion)
return
}
log.SetLevel(log.ERROR)
if *verbose {
log.SetLevel(log.INFO)
}
if *debug {
log.SetLevel(log.DEBUG)
}
if *stack {
log.SetPrintStackTrace(*stack)
}
if *quiet {
// Override!!
log.SetLevel(log.ERROR)
}
if migrationContext.DatabaseName == "" {
log.Fatalf("--database must be provided and database name must not be empty")
}
if migrationContext.OriginalTableName == "" {
log.Fatalf("--table must be provided and table name must not be empty")
}
if migrationContext.AlterStatement == "" {
log.Fatalf("--alter must be provided and statement must not be empty")
}
migrationContext.Noop = !(*executeFlag)
if migrationContext.AllowedRunningOnMaster && migrationContext.TestOnReplica {
log.Fatalf("--allow-on-master and --test-on-replica are mutually exclusive")
}
if migrationContext.AllowedRunningOnMaster && migrationContext.MigrateOnReplica {
log.Fatalf("--allow-on-master and --migrate-on-replica are mutually exclusive")
}
if migrationContext.MigrateOnReplica && migrationContext.TestOnReplica {
log.Fatalf("--migrate-on-replica and --test-on-replica are mutually exclusive")
}
switch *cutOver {
case "atomic", "default", "":
migrationContext.CutOverType = base.CutOverAtomic
case "two-step":
migrationContext.CutOverType = base.CutOverTwoStep
default:
log.Fatalf("Unknown cut-over: %s", *cutOver)
}
if err := migrationContext.ReadConfigFile(); err != nil {
log.Fatale(err)
}
if err := migrationContext.ReadThrottleControlReplicaKeys(*throttleControlReplicas); err != nil {
log.Fatale(err)
}
if err := migrationContext.ReadMaxLoad(*maxLoad); err != nil {
log.Fatale(err)
}
if err := migrationContext.ReadCriticalLoad(*criticalLoad); err != nil {
log.Fatale(err)
}
if migrationContext.ServeSocketFile == "" {
migrationContext.ServeSocketFile = fmt.Sprintf("/tmp/gh-ost.%s.%s.sock", migrationContext.DatabaseName, migrationContext.OriginalTableName)
}
migrationContext.SetNiceRatio(*niceRatio)
migrationContext.SetChunkSize(*chunkSize)
migrationContext.SetMaxLagMillisecondsThrottleThreshold(*maxLagMillis)
migrationContext.SetReplicationLagQuery(*replicationLagQuery)
migrationContext.SetThrottleQuery(*throttleQuery)
migrationContext.SetDefaultNumRetries(*defaultRetries)
migrationContext.ApplyCredentials()
if err := migrationContext.SetCutOverLockTimeoutSeconds(*cutOverLockTimeoutSeconds); err != nil {
log.Errore(err)
}
log.Infof("starting gh-ost %+v", AppVersion)
acceptSignals(migrationContext)
migrator := logic.NewMigrator()
err := migrator.Migrate()
if err != nil {
log.Fatale(err)
}
log.Info("Done")
}