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c92af038fb
This is an example external logging service which can be enabled by
adding it to the `init` section of the .yml, for example:
...
init:
- linuxkit/init:35866bb276c264a5f664bfac7456f4b9eeb87a4d
- linuxkit/runc:v0.4
- linuxkit/containerd:f2bc1bda1ab18146967fa1a149800aaf14bee81b
- linuxkit/ca-certificates:v0.4
- linuxkit/memlogd:cc035e5c9e4011ec1ba97a181a6689fc90965ce9
onboot:
...
Signed-off-by: David Scott <dave.scott@docker.com>
56 lines
900 B
Go
56 lines
900 B
Go
package main
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import (
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"bufio"
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"flag"
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"net"
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"os"
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)
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const (
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logDump byte = iota
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logFollow
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logDumpFollow
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)
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func main() {
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var err error
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var socketPath string
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var follow bool
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var dumpFollow bool
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flag.StringVar(&socketPath, "socket", "/var/run/memlogdq.sock", "memlogd log query socket")
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flag.BoolVar(&dumpFollow, "F", false, "dump log, then follow")
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flag.BoolVar(&follow, "f", false, "follow log buffer")
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flag.Parse()
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addr := net.UnixAddr{
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Name: socketPath,
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Net: "unix",
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}
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conn, err := net.DialUnix("unix", nil, &addr)
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if err != nil {
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panic(err)
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}
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defer conn.Close()
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var n int
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switch {
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case dumpFollow:
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n, err = conn.Write([]byte{logDumpFollow})
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case follow && !dumpFollow:
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n, err = conn.Write([]byte{logFollow})
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default:
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n, err = conn.Write([]byte{logDump})
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}
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if err != nil || n < 1 {
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panic(err)
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}
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r := bufio.NewReader(conn)
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r.WriteTo(os.Stdout)
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}
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