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@Eyjafjallajokull
Eyjafjallajokull / README.md
Last active April 8, 2025 15:20
AWS EBS - Find unused snapshots

This script can help you find and remove unused AWS snapshots and volumes.

There is hardcoded list of regions that it searches, adjust the value to suit your needs.

Use snapshot.py snapshot-report to generate report.csv containing information about all snapshots.

snapshot.py snapshot-cleanup lets you interactively delete snapshot if it finds it is referencing unexisting resources.

./snapshots.py --help
@halberom
halberom / opt1_template.j2
Last active January 17, 2025 12:34
ansible - example of template if else
{# style 1 - long form #}
{% if filepath == '/var/opt/tomcat_1' %}
{% set tomcat_value = tomcat_1_value %}
{% else %}
{% set tomcat_value = tomcat_2_value %}
{% endif %}
{# style 2 - short form #}
{% set tomcat_value = tomcat_1_value if (filepath == '/var/opt/tomcat_1') else tomcat_2_value %}
@reyjrar
reyjrar / elasticsearch.yml
Last active December 26, 2024 21:46
ElasticSearch config for a write-heavy cluster
##################################################################
# /etc/elasticsearch/elasticsearch.yml
#
# Base configuration for a write heavy cluster
#
# Cluster / Node Basics
cluster.name: logng
# Node can have abritrary attributes we can use for routing
@jboner
jboner / latency.txt
Last active April 29, 2025 15:40
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
@mleinart
mleinart / whisper-path-migrate.sh
Created April 25, 2012 08:15
Script to migrate Graphite Whisper data from one dir to another
#!/bin/bash
## Adjustments
PATH=/bin:/usr/bin:/sbin:/usr/sbin
CARBON_SCRIPT=/etc/init.d/carbon-cache
CARBON_CONF=/etc/carbon/carbon.conf
RSYNC_OPTIONS='-av --ignore-existing'
WHISPER_BIN=/usr/bin
execute_cutover () {
@tsabat
tsabat / supervisor.conf
Created December 28, 2011 15:09
Sample supervisor config file
; Sample supervisor config file.
[unix_http_server]
file=/tmp/supervisor.sock ; (the path to the socket file)
;chmod=0700 ; sockef file mode (default 0700)
;chown=nobody:nogroup ; socket file uid:gid owner
;username=user ; (default is no username (open server))
;password=123 ; (default is no password (open server))
;[inet_http_server] ; inet (TCP) server disabled by default