Revision as of 17:20, 15 January 2019

Apps

• Git
• vim

Puppet

• Puppet notes
• Puppet Augeas
• Templates
• Puppetdb

System Administration

• Bash Style Guide
• Enable kernel crash dumps
• Firewalld notes
• Audit File System Changes
• PXE Boot Server
• Build a custom Fedora install CD
• Building a custom CentOS 7 install CD
• Build rpm for a shell script
• SElinux notes
• LDAP notes

Backups

• Bacula

Apache

• Htaccess_tricks
• Enable Server Status
• SELinux notes
• Reverse proxy config
• Generic virtual host
• Test sites using curl
• Apache log format
• mod_wsgi
• Apache subdomain mapping

Nginx

• Serve custom error pages from reverse proxy

PHP

• PHP Troubleshooting
• Build PHP with AsyncDNS enabled
• Test PHP memory limit

Package Management

• Yum notes

Command Line Tips

• Send SSH root login alert
• Set Bash Prompt
• awk one liners
• Sed One Liners
• Build custom kernel RPM
• Stop sudo from asking for a password
• Backup using tar
• Remove spaces from file names
• tcpdump
• create mirror site using wget
• connect to remote GDM display
• Find disk space usage
• find files based on date
• tune max value in RRD file
• journalctl

SSL

• OpenSSL Notes
• Letsencrypt beta

Networking

• Disable IPv6
• Enable trunked networking in Debian
• iptables script
• Enable GDM remote logins
• drop packets in iptables with string matching
• Enable IP Masquerade
• Netmask Cheat Sheet
• iptables port forwarding
• enable secondary IP promotion

Mail

• Exim Cheat Sheet
• Mail Tips
• Mail Benchmarks
• Mailman Guide
• Postfix notes
• SpamAssassin user_prefs
• Block SMTP connections based on HELO name
• Spam Procedure
• MailScanner
• Procmail
• Sending mail through PHP

PostgreSQL

• Postgres Tips
• Postgres Backup Script
• Postgres Reset Password
• Postgresql Streaming Replication

MySQL

• MySQL Tips
• MySQL Backup Script
• innobackupex script
• MySQL Change Default Character Set
• Transfer MySQL Privilege Data
• Reset MySQL Root Password
• Recover from mysql log read failure
• mytop
• mysql change default character set
• mysql strict mode
• mysql log warnings
• MySQL replication
• my.cnf examples
• updating mysql password hashes

Virtualization

Docker

• Docker notes

oVirt

• oVirt notes

Virtual Box

• Convert VirtualBox disk image to other format
• Attach physical disk to a virtual box VM

KVM

• Sample KVM config

Linux Vserver

• Resize vserver partition
• How to Build a CentOS 3 Template
• vserver block IP

VMware

• vmware notes
• convert VMware disk to other format

Storage

• NFS
• Set up encrypted FS with LUKS
• Linux iSCSI
• Rename root volume group
• Object Storage

RAID

• RAID controller commands
• Linux MD

Lustre

• Lustre Install Notes
• Target management
• Adding a new OST
• Add new OST using a loopback device
• Lustre client puppet manifest

Gluster

• Gluster notes

Ceph

• Ceph Notes

Linux HA

• DRBD Installation
• OCFS2
• Linux heartbeat installation
• High Availability mesh networking with cjdns

Raspberry Pi

• Stream audio from MacOS to shairplay

Miscellaneous

• How to convert video files
• Video Editing
• Firefox Addons
• GPG Guide
• Motorcycle Info
• CC Test Numbers
• OS X start service at boot
• RHCE notes

Whois history lookup: http://whoisrequest.org/history/