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Daniel Whelan ophelan

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@timvisee
timvisee / falsehoods-programming-time-list.md
Last active May 1, 2024 01:29
Falsehoods programmers believe about time, in a single list

Falsehoods programmers believe about time

This is a compiled list of falsehoods programmers tend to believe about working with time.

Don't re-invent a date time library yourself. If you think you understand everything about time, you're probably doing it wrong.

Falsehoods

  • There are always 24 hours in a day.
  • February is always 28 days long.
  • Any 24-hour period will always begin and end in the same day (or week, or month).
@innovia
innovia / kubernetes_add_service_account_kubeconfig.sh
Last active January 29, 2024 23:00
Create a service account and generate a kubeconfig file for it - this will also set the default namespace for the user
#!/bin/bash
set -e
set -o pipefail
# Add user to k8s using service account, no RBAC (must create RBAC after this script)
if [[ -z "$1" ]] || [[ -z "$2" ]]; then
echo "usage: $0 <service_account_name> <namespace>"
exit 1
fi
@denji
denji / README.md
Last active April 25, 2023 21:48
Take a list of CIDR address blocks and combine them, for example, 192.168.0.0/24 and 192.168.1.0/24 gives 192.168.0.0/23. I usually use "list-iana-reserved-ranges | aggregate-cidr-addresses" to get a list of blocks to not report with firewall log processing.
@untergeek
untergeek / ls-es-mapping.json
Last active March 16, 2019 12:38
Logstash v1.2+ Elasticsearch Mapping Template
{
"template" : "logstash-*",
"settings" : {
"index.refresh_interval" : "5s",
"analysis" : {
"analyzer" : {
"default" : {
"type" : "standard",
"stopwords" : "_none_"
}
@nherment
nherment / backup.sh
Created February 29, 2012 10:42
Backup and restore an Elastic search index (shamelessly copied from http://tech.superhappykittymeow.com/?p=296)
#!/bin/bash
# herein we backup our indexes! this script should run at like 6pm or something, after logstash
# rotates to a new ES index and theres no new data coming in to the old one. we grab metadatas,
# compress the data files, create a restore script, and push it all up to S3.
TODAY=`date +"%Y.%m.%d"`
INDEXNAME="logstash-$TODAY" # this had better match the index name in ES
INDEXDIR="/usr/local/elasticsearch/data/logstash/nodes/0/indices/"
BACKUPCMD="/usr/local/backupTools/s3cmd --config=/usr/local/backupTools/s3cfg put"
BACKUPDIR="/mnt/es-backups/"
YEARMONTH=`date +"%Y-%m"`