myh-st

#!/bin/bash
# save this file as tailc then
# run as: $ tailc logs/supplier-matching-worker.log Words_to_highlight
file=$1

if [[ -n "$2" ]]; then
    color='
    // {print "\033[37m" $0 "\033[39m"}
    /(WARN|WARNING)/ {print "\033[1;33m" $0 "\033[0m"}
    /(ERROR|CRIT)/ {print "\033[1;31m" $0 "\033[0m"}

myh-st

user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;

# Load dynamic modules. See /usr/share/nginx/README.dynamic.
include /usr/share/nginx/modules/*.conf;

events {
    worker_connections 1024;

myh-st

{# 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 %}

myh-st

# templates/mail_body.j2
{% for host in play_hosts %}
The {{ host }} says {{ hostvars[host]['result']['stdout'] }}
{% endfor %}

myh-st

#!/bin/bash
# bash generate random alphanumeric string
#

# bash generate random 32 character alphanumeric string (upper and lowercase) and 
NEW_UUID=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)

# bash generate random 32 character alphanumeric string (lowercase only)
cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1

myh-st

#!/bin/bash

if [[ $#  -lt 1 ]]; then
    echo "usage: $0 domain"
    exit 0
else
    domain=$1
    echo "domain is ${domain}"
fi

myh-st

git fetch --all
git reset --hard origin/master
git pull origin master

myh-st

---
- hosts: all
  tasks:
    - name: Get mac addresses of all interfaces except local
      debug:
        msg: "{{ ansible_interfaces | difference(['lo']) | map('regex_replace', '^(.*)$', 'ansible_\\1' ) | map('extract', hostvars[inventory_hostname], 'macaddress')  | list }}"

myh-st

#!/bin/bash
# short code #
ESHOST="elastic" ; timeout 300 bash -c "until curl --silent --output /dev/null http://$ESHOST:9200/_cat/health?h=st; do printf '.' sleep 5; done; printf '\n'"

myh-st

Create an SSH key in PEM format

I have not been able to use ssh-keygen -e to reliably generate a private key for SSH in PEM format. This format is sometimes used by commercial products. Instead, I had to convert the key using openssl.

# generate an RSA key of size 2048 bits
ssh-keygen -t rsa -b 2048 -f azure -C 'azure-dev'

# copy key to x.x.x.x and add to authorized_keys