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512c79e8d6
As of now, we're not using Go profiling, so it's safe to disable it to save some memory and CPU costs. Once we start using it, we can re-enable it conditionally. Each process allocates around 1.4MiB on amd64 for memory profiling buckets. Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
84 lines
2.0 KiB
Go
84 lines
2.0 KiB
Go
// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package main
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import (
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"flag"
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"log"
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"runtime"
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"github.com/talos-systems/talos/internal/app/timed/pkg/ntp"
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"github.com/talos-systems/talos/internal/app/timed/pkg/reg"
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"github.com/talos-systems/talos/pkg/grpc/factory"
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"github.com/talos-systems/talos/pkg/machinery/config/configloader"
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"github.com/talos-systems/talos/pkg/machinery/constants"
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"github.com/talos-systems/talos/pkg/startup"
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)
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// https://access.redhat.com/solutions/39194
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// Using the above as reference for setting min/max.
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const (
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// TODO: Once we get naming sorted we need to apply
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// for a project specific address
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// https://manage.ntppool.org/manage/vendor
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DefaultServer = "pool.ntp.org"
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)
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func init() {
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// Explicitly disable memory profiling to save around 1.4MiB of memory.
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runtime.MemProfileRate = 0
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log.SetFlags(log.Lshortfile | log.Ldate | log.Lmicroseconds | log.Ltime)
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flag.Parse()
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}
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// New instantiates a new ntp instance against a given server
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// If no servers are specified, the default will be used.
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func main() {
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if err := startup.RandSeed(); err != nil {
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log.Fatalf("startup: %v", err)
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}
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server := DefaultServer
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config, err := configloader.NewFromStdin()
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if err != nil {
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log.Fatal(err)
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}
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// Check if ntp servers are defined
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// Support for only a single time server currently
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if len(config.Machine().Time().Servers()) >= 1 {
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server = config.Machine().Time().Servers()[0]
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}
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n, err := ntp.NewNTPClient(
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ntp.WithServer(server),
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)
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if err != nil {
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log.Fatalf("failed to create ntp client: %v", err)
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}
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log.Println("starting timed")
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errch := make(chan error)
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go func() {
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errch <- n.Daemon()
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}()
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go func() {
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errch <- factory.ListenAndServe(
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reg.NewRegistrator(n),
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factory.Network("unix"),
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factory.SocketPath(constants.TimeSocketPath),
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factory.WithDefaultLog(),
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)
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}()
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log.Fatal(<-errch)
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}
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