lincolnthomas

### ipython
Python 2.7.10 (default, Oct 23 2015, 19:19:21) 
Type "copyright", "credits" or "license" for more information.

IPython 2.3.0 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

lincolnthomas

When I deploy a new machine N (such as a Eucalyptus test node) I want to log into from my machine M, 
here's what I do to set up passwordless logins, get my personal .bashrc on the system, 
and set up the prompt so I know what machine I'm talking to.

One-time setup:
---------------

On machine M:

Add your id_rsa.pub and id_rsa files to your ~/.ssh directory.

lincolnthomas

// Add the "LPT" section to this method (or similarly for other the other run...() methods in this class).
// Existing code as of 17-Jan-2017 from eucalyptus/clc/modules/core/src/main/java/edu/ucsb/eucalyptus/util/SystemUtil.java

//...
	public static int runAndGetCode(String[] command) {
    boolean hasTicket = maybeRestrictedOp( command );
		try
		{
			String commandString = "";
			for(String part : command) {

lincolnthomas

Create a lot of snaps, serially or in parallel:
snaps-create.sh
======================
#!/bin/bash
set -x
VOLUME=$1
NUMSNAPS=$2
PARALLEL=$3
echo Creating $NUMSNAPS snapshots on volume $VOLUME
if [ -n "$PARALLEL" ]; then

lincolnthomas

#!/bin/bash
VLED=/var/log/eucalyptus/cloud-debug.log
rm -f $VLED.10
for ((i=9; i>0; i--)) ; do
  j=$((i+1))
  mv $VLED.$i $VLED.$j
done
mv $VLED $VLED.1

lincolnthomas

It's a PITA to delete all items in an AWS DynamoDB table without deleting the table. 
True, you can delete and re-create the table, but resource ARNs will change (like DyanmoDB Streams), which 
can disrupt other resources depending on those ARNs.

I found https://www.npmjs.com/package/dynamodb-empty which does (most of) the job. 
Note: 

1. The README there is wrong, as of this writing. The correct syntax is:

$ dynamodb-empty --table {tablename}