Cloud Task at mixed cloud | TurnKey GNU/Linux

Hi Guys,

I was reading cloud task, that is a great work. However, I am wondering if it is possible to run could task against our priviate servers located at different hosting center, all of them are running turnkey linxu right now.

It will be nice that we can use cloudtask to do mass upgrade for all our servers and do application upgrade of own too. Is that possible?

Replies (8)

Yes you can use CloudTask for private clouds

Reply 1 2011-10-29

You just provide cloudtask with a canned list of --workers. See the documentation for details and experiment a bit.

Regarding mass upgrades, yes you could use cloudtask for any mass execution task and it should work fine. Think of it as SSH on steroids. Any task you could do non-interactively on one server you can use CloudTask to do non-interactively on a whole bunch of them.

You'll need to setup SSH key authentication

Reply 2 2011-11-01

Password authentication is not supported. You'll need to setup SSH public key authentication (e.g., add your local public SSH key to the $HOME/.ssh/authorized_keys on the worker).

When CloudTask connects to your local machine using SSH it needs to do that non-interactively. If you're going to work a hundred machines it's not practical to ask you to input passwords for each of them. Using SSH public key authentication is also safer.

Liraz

Reply 3 2011-11-01

Any good example for none-EC2 instance. I am tried to do a mass upgrade to all pre-installed Turnkey Linux server in my VirtualBox. How can I do that?

root@OSCAR-CORE ~# seq 10 | cloudtask --workers=localhost echo

About to launch 1 cloud server to execute the following task:

Parameter Value

--------- -----

jobs 10 (1 .. 10)

split -

command echo

hub-apikey -

ec2-region us-east-1

ec2-size m1.small

ec2-type s3

user root

backup-id -

workers localhost

overlay -

post -

pre -

timeout 3600

report -

Is this really what you want? [yes/no] yes

session 7 (pid 6865)

# 2011-11-01 14:46:49 [localhost] using existing worker

# 2011-11-01 14:46:49 [localhost] unreachable via ssh: Permission denied (publickey,password).

Traceback (most recent call last):

File "/usr/lib/python2.6/dist-packages/cloudtask/executor.py", line 115, in __init__

callback=self.handle_stop)

File "/usr/lib/python2.6/dist-packages/cloudtask/ssh.py", line 82, in __init__

self.ping()

File "/usr/lib/python2.6/dist-packages/cloudtask/ssh.py", line 89, in ping

raise self.Error(str(e).strip())

Error: Permission denied (publickey,password).

session 7: terminated (0 finished, 10 pending)

Can you SSH to remote hosts without password though?

Reply 4 2011-11-02

'Cause that's what you need in my understanding.

Can you really log in as root without a password?

Reply 5 2011-11-02

Are you absolutely sure you can ssh into localhost AS ROOT without a password?

There's a difference between this:

# logs into localhost as user
user$ ssh localhost

And this:

# logs into localhost as root
user$ ssh root@localhost

Hi Liraz, That is exactly

Reply 6 2011-11-02

Hi Liraz,

That is exactly what I did. When i do ssh localhost, it won't ask me for any password at all.

Timeout

Is there something wrong with my steps?

Reply 7 2011-11-03

The following is detail on Apache-Tomcat 11.2, i think that maybe I shall not use "ssh-keygen"?

2007 ssh-keygen

2008 ssh-copy-id root@localhost

2009 ssh root@localhost

2010 apt-get install cloudtask

2011 seq 10 | cloudtask --workers=localhost echo

root@tomcat-apache ~# seq 10 | cloudtask --workers=localhost echo