heiswayi

First Method

Deleting the .git folder may cause problems in our git repository. If we want to delete all of our commits history, but keep the code in its current state, try this:

# Check out to a temporary branch:
git checkout --orphan TEMP_BRANCH

# Add all the files:
git add -A

igorcosta

Elasticsearch Cheat Sheet

Populating this as we dig further into the platform, hopefully it'll be as useful to you as it is to use.

• When you need to reboot at least one node
• Explain why a shard is unallocated
• Fix an unallocated primary shard
• Turn off replication for an index
• Set transaction log (TRANSLOG) size

djoreilly

DB

ovs-vsctl list open_vswitch
ovs-vsctl list interface
ovs-vsctl list interface vxlan-ac000344
ovs-vsctl --columns=options list interface vxlan-ac000344
ovs-vsctl --columns=ofport,name list Interface
ovs-vsctl --columns=ofport,name --format=table list Interface
ovs-vsctl -f csv --no-heading --columns=_uuid list controller
ovs-vsctl -f csv --no-heading -d bare --columns=other_config list port

DominikSerafin

Notes

• 'postgres' user is superuser

Resources

• PostgreSQL command line cheatsheet
• Hyperpolyglot Cheatsheet

StefanWallin

Configuring nginx for SSL SNI vhosts

Gotchas

• Note that SHA2 hash algorithm may be not supported on older systems (Windows XP, Windows 2003, among others).
• Be aware that mandatory https on SNI vhosts eliminate [Internet Explorer on Windows XP, among others] (http://en.wikipedia.org/wiki/Server_Name_Indication#Web_browsers.5B6.5D).

Remarks

• My version of konklones SSL config does not have SPDY support(my nginx+openssl does not support it)
• You need a default ssl server (example.org-default.conf).
• Some SSL-options have to be unique across your instance, so it's easier to have them in a common file(ssl.conf).

Kartones

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)