mahemoff

* Shows a message while asserting like: 

ok: [host] => {                  
    "msg": "disk usage 4.2B of total 20.0GB (21.0%) (should be within limit 90.0%)"
}

* Note this only looks at first mount point on current node
* Fails if disk is near-full
* Last step pushes to a push-based monitoring service, which will alert us if it doesn't get there after some time
* Need to setup a  variable `disk_limit`, which is the max acceptable usage ratio, e.g. set it to 0.8 if you want to keep disks within 80% of max size

joshbuchea

Semantic Commit Messages

See how a minor change to your commit message style can make you a better programmer.

Format: <type>(<scope>): <subject>

<scope> is optional

Example

roylee0704

docker logs nginx 2>&1 | grep "127." 

# ref: http://stackoverflow.com/questions/34724980/finding-a-string-in-docker-logs-of-container

BretFisher

Docker Swarm Mode Ports

Starting with 1.12 in July 2016, Docker Swarm Mode is a built-in solution with built-in key/value store. Easier to get started, and fewer ports to configure.

Inbound Traffic for Swarm Management

• TCP port 2377 for cluster management & raft sync communications
• TCP and UDP port 7946 for "control plane" gossip discovery communication between all nodes
• UDP port 4789 for "data plane" VXLAN overlay network traffic
• IP Protocol 50 (ESP) if you plan on using overlay network with the encryption option

AWS Security Group Example

rcubetrac

#!/bin/bash
#------------configuration--------------------------------

# the url of the openldap server
server="ldap://localhost:389";

# the static config file of openldap
config="/etc/ldap/slapd.conf";

# the LDAP base suffix and admin rootdn

karenyyng

Table Of Content

Skip to the relevant sections if needed.

• 2-min tutorial to do it the quick-and-dirty-way
• Concepts for resolving Git conflicts
• Setting up different editors / tool for using git mergetool
  • Finding out what mergetool editors are supported
• mergetool simple code example for vimdiff
  • Resolving conflict from a Git pull
• Other great references and tutorials

Shaltz

(source : http://injustfiveminutes.com/category/openldap)

How to fix “ldif_read_file: checksum error”
Posted on October 28, 2014	
15

Well, in spite of you did read a banner saying “# AUTO-GENERATED FILE – DO NOT EDIT!! Use ldapmodify.” you ignored it and made some manual modifications in any of the LDIF files in /etc/ldap/slapd.d/.

Don’t worry it happened to me too :) When you need to quickly setup an openLDAP server for development it is pretty much easier to tweak these files although the recommended way is to use ldapmodify tool. But if you change the LDIF files in cn=config manually, their contents and checksums won’t match, which is not fatal, but is annoying when using tools such as slapcat:

seanmcn

#Insall Ajenti
apt-get update
wget http://repo.ajenti.org/debian/key -O- | apt-key add -
echo "deb http://repo.ajenti.org/ng/debian main main ubuntu" >> /etc/apt/sources.list
apt-get update
apt-get install ajenti
service ajenti restart

# Uninstall Apache2
sudo apt-get autoremove && sudo apt-get remove apache2*

janogarcia

Email Coding Guidelines

Warning

These guidelines haven't been updated since 2016. Learn more…

Table of contents

• TL;DR
• Intro
• Layout

malias

#!/bin/sh
####
# Titel 			dnsbl_check
# Descritption 		This Script checks multiple ips and blacklist
####
# Mail recipients (multiple mail addresses separated by whitespace)
mail=''
# Logfiles
LogFile='/tmp/rbltemp.log'
LogRBLfile='/var/log/rblfound.log'