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Heinrich Hartmann HeinrichHartmann

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Glossary of Monitoring

  • A system is a set of connected components

The definition of connected and components is missing. I think we can go with definitions like:

  • A components is a set of processes (in the OS sense)
  • Two components are connected if they can talk to each other (over a network or IPC).

Example: A LAMP system, consists of components:

HeinrichHartmann /
Created Sep 23, 2016
Read data from std in and show in a browser
# Read data from std in and show in a browser.
# E.g. curl | bcat
TMPFILE=`mktemp '/tmp/bcat.XXXXXXXX'`"$EXT" || exit 1
cat > $TMPFILE
HeinrichHartmann /
Last active Jan 18, 2019
Publish dropbox "files remaining" as statsd metrics
# Example output of ` status`
# ```
# Syncing (51,938 files remaining, 2 mins left)
# Downloading 51,938 files (3,069 KB/sec, 2 mins left)
View lua_examples.c
#include <stdio.h>
#include <string.h>
#include <lua.h>
#include <lauxlib.h>
#include <lualib.h>
// Helper function to print the stack contents
// Values other than numbers and strings are printed as "(null)"
void print_stack(lua_State *L, char* title){
int nargs = lua_gettop(L);
HeinrichHartmann / ignite.el
Last active May 2, 2018
emacs functions to simulate ignite talks
View ignite.el
(defun ignite-start ()
"Auto advaince slides"
(set 'ignite-interval 15)
(set 'ignite-t ignite-interval)
(message (format "Go! (%d sec)" ignite-interval))
(run-at-time 0 1 (lambda ()
(if (<= ignite-t 0)
View Circonus for Data Science.ipynb
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HeinrichHartmann /
Created Jul 26, 2018
Python IRONdb/Snowth Bindings
# This is a Python wrapper for the Snowth/IRONdb API I wrote
# for personal use in 2014. Use at your own risk.
import logging
log = logging.getLogger()
if __name__ == "__main__": log.setLevel(logging.DEBUG)
else: log.setLevel(logging.WARN)
import requests

Keybase proof

I hereby claim:

  • I am heinrichhartmann on github.
  • I am hartmann ( on keybase.
  • I have a public key ASADQm4Cys6zXNQQjsHsuEk7xwjRTWF7VSrdUI2kRjrcuQo

To claim this, I am signing this object:

HeinrichHartmann /
Created Dec 29, 2020
CSV to VCard Converer for Monica CRM
import pandas as pd
import vobject
df = pd.read_csv("contacts.csv", index_col="Id")
for row in df.iterrows():
rec = row[1].to_dict()
for k,v in rec.items():
if v == "-":
rec[k] = None
HeinrichHartmann / Makefile
Last active Apr 30, 2021
Search Sum Exercise in x86-Assembly
View Makefile
main: main.c lib.asm
nasm -f elf64 -o lib.o lib.asm
gcc -o main main.c lib.o
run: main