tobert

package main

// writing repros is occasionally handy because in the course of doing
// so I discovered the bug in my own code that looked like a bug in
// gvisor

import (
	"encoding/hex"
	"log"
	"net"

tobert

#!/bin/bash

svc="SRECon"
# turns out the date doesn't matter much for this exercise since
# we don't show it
# but it is important for /finding/ these spans once you've sent them
# so pick a date/time earlier today while testing :)
talk_start="2022-03-14T20:00:00.00000Z"
talk_end="2022-03-14T20:40:00.00000Z"

tobert

receivers:
  otlp:
    protocols:
      grpc:
        endpoint: "0.0.0.0:4317"
      # opentelemetry-ruby only supports http for now
      http:
        endpoint: "0.0.0.0:55681"

processors:

tobert

from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.exporter.otlp.proto.grpc.trace_exporter import OTLPSpanExporter
from opentelemetry.sdk.trace.export import BatchSpanProcessor
from opentelemetry import context
from opentelemetry.instrumentation.requests import RequestsInstrumentor
from opentelemetry.instrumentation.grpc import GrpcInstrumentorClient
from opentelemetry import propagate

tobert

otel-collector_1  | Span #2
otel-collector_1  |     Trace ID       : f84421f9695c1cd40dd54239a39687a5
otel-collector_1  |     Parent ID      :
otel-collector_1  |     ID             : aec1f44bad81b207
otel-collector_1  |     Name           : dhcp.request
otel-collector_1  |     Kind           : SPAN_KIND_INTERNAL
otel-collector_1  |     Start time     : 2021-08-11 21:49:09.117334915 +0000 UTC
otel-collector_1  |     End time       : 2021-08-11 21:49:09.117486739 +0000 UTC
otel-collector_1  |     Status code    : STATUS_CODE_OK
otel-collector_1  |     Status message :

tobert

#!/bin/bash
# start up my Arch machine

# root disk:
# dd if=/dev/zero of=root.img bs=1000000 count=4000 conv=sparse
# scratch disk is for moving data in and out without networking
# e.g. tar -xzvf /dev/vdb
# dd if=/dev/zero of=scratchdisk.img bs=1000000 count=2500 conv=sparse

data=$HOME/archbox

tobert

#!/bin/bash
# otel-cli-ideas.sh - some ideas I'm playing with for otel-cli to cover some
# use cases where manual spans or exec don't quite do the trick
#
# another cool outcome is you could run this without the collector in some
# cases without spamming your OTLP endpoint...
#
# I hope to OSS otel-cli under Apache 2 in early April 2021.

# maybe it could background itself and wait for events on a unix socket?

tobert

receivers:
  otlp:
    protocols:
      grpc:
        endpoint: "127.0.0.1:55680"
      # opentelemetry-ruby only supports http for now
      http:
        endpoint: "127.0.0.1:55681"

processors:

tobert

#!/usr/bin/env ruby
# run the otel collector with otlp/http enabled and turn on debug logging
# so you can see it print spans as they go through...
#
# configuration:
# export OTEL_EXPORTER_OTLP_ENDPOINT=http://localhost:55681
#
# first iteration I thought I had an easy repro because I had set
# OTEL_RUBY_BSP_START_THREAD_ON_BOOT=false
# so don't do that :) It's almost never what you want.

tobert

#!/bin/bash
# start up my Arch machine
# for this to work I had to extract kernel & initramfs from the ISO
# which is a surprisingly a pain in the butt on OSX but easy enough
# to find on Google, tldr add 2K of zeroes to the front of the ISO
# then it'll mount just fine

# to make root disk:
# dd if=/dev/zero of=root.img conv=sparse bs=1000000 count=20000