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The Agile Acid Test

09-Jan-12

Agile teams produce a continuous stream of value, at a sustainable pace, while adapting to the changing needs of the business.

More here.

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rsync with a non-default ssh port

28-Dec-11

The rsync man page notes that the “-e” or “–rsh” flag lets you “specify the remote shell to use”. This can be used to specify transfer over a non-standard SSH port using the “-p” flag to the ssh binary:

SSH_PORT=...
rsync [OPTION...] -e "ssh -p $SSH_PORT" [USER@]HOST:SRC... [DEST]
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Use a non-default port with ssh-copy-id

26-Dec-11

Quote a “-p” flag specifying the port with the “user@machine” portion of the arguments; e.g. for port 2234:

ssh-copy-id -i ~/.ssh/id_rsa.pub '-p 2234 user@machine'

Hat tip to Mike Gerwitz for getting me looking in the right direction, although the solution described on his blog does not work with the version of ssh-copy-id I have. (Edit: Looks like the same solution that I arrived at was pointed out in the comments on the above blog post.)

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Generate an SSH Public Key from a Private Key

07-Dec-11

Use ssh-keygen:

ssh-keygen -y -f key.pem > key.pub
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SGE Queue States

30-Sep-11

Reference: Monitoring and Controlling Queues

a – Load threshold alarm
o – Orphaned
A – Suspend threshold alarm
C – Suspended by calendar
D – Disabled by calendar
S – Suspended by subordination to another queue
c – Configuration ambiguous
d – Disabled
s – Suspended
u – Unknown
E – Error

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virtualenv-burrito example bootstrap

08-Sep-11 
curl -s https://raw.github.com/brainsik/virtualenv-burrito/master/virtualenv-burrito.sh | bash
source ~/.venvburrito/startup.sh
mkvirtualenv --no-site-packages fabric
pip install Fabric

You will likely want the python-dev .deb installed before starting this process.

When you want to switch back to your system python installation:

deactivate
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List SGE resource availability with qstat -F

31-Aug-11

For a queue that uses h_vmem as a resource:

> qstat -F h_vmem
queuename qtype resv/used/tot. load_avg arch states
---------------------------------------------------------------------------------
all.q@compute-1-0.local BIP 0/0/12 0.05 lx26-amd64
hc:h_vmem=48.000G

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Building ri with RVM

18-May-11 
> rvm docs generate-ri
Generating ri documentation, be aware that this could take a *long* time, and depends heavily on your system resources...
( Errors will be logged to /opt/rvm-base//rvm/log/ruby-1.8.7-p334/docs.log )
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Add a new Gitolite Repository for Already-Exisiting Code

09-May-11
  • Create the repository in your gitolite admin repository (in conf/gitolite.conf) and push changes to create an empty repository.
  • Push the repository to gitolite: 
    > git push --all gitolite@git:newrepo
Counting objects: 1332, done.
Compressing objects: 100% (829/829), done.
Writing objects: 100% (1332/1332), 14.36 MiB | 8.67 MiB/s, done.
Total 1332 (delta 391), reused 1233 (delta 336)
To gitolite@git:newrepo
 * [new branch]      master -> master
> git push --tags gitolite@git:newrepo
Everything up-to-date
  • You may want to set the local repository’s origin: 
    git remote add --track master origin gitolite@git:newrepo
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Hot Adding a Disk to a Linux ESX VM

02-May-11

Add the disk through the VMware user interface. Then, force the host to rescan for the new drive, as root:

for i in /sys/class/scsi_host/*; do echo '- - -' > $i/scan ; done

Reference: Vmware Linux Guest Add a New Hard Disk Without Rebooting Guest

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