luckylittle

Red Hat Enterprise Linux Diagnostics & Troubleshooting (RH342)

Last update: Fri Jul 26 08:23:20 UTC 2019 by @luckylittle

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1. Troubleshooting principles

2. Generic issues

bechampion

OPENSSH=/opt/openssh2
mkdir -p /opt/openssh2/dist/
cd ${OPENSSH}
wget http://zlib.net/zlib-1.2.11.tar.gz
tar xvfz zlib-1.2.11.tar.gz
cd zlib-1.2.11
./configure --prefix=${OPENSSH}/dist/ && make && make install
cd ${OPENSSH}
wget http://www.openssl.org/source/openssl-1.0.1e.tar.gz
tar xvfz openssl-1.0.1e.tar.gz

darcyliu

#!/bin/sh
# Samba install script for CentOS 7 
yum install -y samba samba-client samba-common

mv /etc/samba/smb.conf /etc/samba/_smb.conf

cat >> /etc/samba/smb.conf << EOF
[global]
workgroup = WORKGROUP
server string = Samba Server %v

darcyliu

# host challenge files on Apache for your domain
<VirtualHost *:80>
	ServerAdmin webmaster@example.com
	DocumentRoot /var/www/example.domain
	ServerName example.domain

	# Add following code to your Apache VirtualHost
	Alias "/.well-known/acme-challenge" "/var/www/challenges/"
	<Directory "/var/www/challenges/">
	Header set Content-Type "application/jose+json"

ryanmaclean

Ubuntu for DevOps and SRE Work

Remove CDROM from Soures

sudo sed -i '/cdrom/d' /etc/apt/sources.list

Quick and Dirty SSH Server

I'd certainly recommend moving to keys over passwords, but for now, it'll do...

sudo apt-get install -y openssh-server
sudo cp /etc/ssh/sshd_config /etc/ssh/sshd_config.factory-defaults

brandonb927

Sublime-Style-Column-Selection
Enable Sublime style 'Column Selection'. Just hold 'alt' while you select, or select using your middle mouse button. Also similar to Texmate's 'Multiple Carets', or BBEdit's 'Block Select'

activate-power-mode
Activate POWER MODE to write your code in style.

atom-alignment
A simple key-binding for aligning multi-line and multiple selections in Atom (Based on the sublime text plugin)

atom-beautify

darcyliu

# Install Time Machine service on CentOS 7
# http://netatalk.sourceforge.net/wiki/index.php/Netatalk_3.1.7_SRPM_for_Fedora_and_CentOS
# http://confoundedtech.blogspot.com/2011/07/draft-draft-ubuntu-as-apple-time.html
yum install -y rpm-build gcc make wget

# install netatalk
yum install -y avahi-devel cracklib-devel dbus-devel dbus-glib-devel libacl-devel libattr-devel libdb-devel libevent-devel libgcrypt-devel krb5-devel mysql-devel openldap-devel openssl-devel pam-devel quota-devel systemtap-sdt-devel tcp_wrappers-devel libtdb-devel tracker-devel

yum install -y bison docbook-style-xsl flex dconf

bnerd

ffmpeg -re -i rtmp://localhost/live/input_stream -acodec libfaac -ab 128k -vcodec libx264 -s 640x360 -b:v 500k -preset medium -vprofile baseline -r 25 -f flv rtmp://localhost/live/medium_500k -acodec libfaac -ab 128k -vcodec libx264 -s 480x272 -b:v 300k -preset medium -vprofile baseline -r 25 -f flv rtmp://localhost/live/medium_300k -acodec libfaac -ab 128k  -c:v libx264 -s 320x200 -b:v 150k -preset:v fast -profile:v baseline -level 1.2 -r 25 -f flv rtmp://localhost/live/medium_150k -acodec libfaac -vn -ab 48k -f flv rtmp://localhost/live/audio_only

brandonb927

#!/bin/sh

###
# SOME COMMANDS WILL NOT WORK ON macOS (Sierra or newer)
# For Sierra or newer, see https://github.com/mathiasbynens/dotfiles/blob/master/.macos
###

# Alot of these configs have been taken from the various places
# on the web, most from here
# https://github.com/mathiasbynens/dotfiles/blob/5b3c8418ed42d93af2e647dc9d122f25cc034871/.osx