STONITH module for Cyclades AlterPath PM
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This STONITH module talks to Cyclades AlterPath PM series of power managers 
via TS, ACS or KVM equipment.

Access to the frontend device (TS, ACS or KVM) is done via root user with 
passwordless ssh. 

For that, it is necessary to create a public/private keypar with _empty_
passphrase on _each_ machine which is part of the cluster. 

Small HOWTO follows:

# ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Created directory '/home/root/.ssh'.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
dc:e0:71:55:fd:2a:b0:19:d6:3c:48:e5:45:db:b4:be root@hostname.network

Next step is to append the public key (/root/.ssh/id_rsa.pub) 
to the authorized_keys file on the TS/ACS/KVM box. The authorized
keys file location is set at the SSH daemon configuration file.  
The default location is /etc/ssh/authorized_keys, so:

[root@clusterhost]# scp /root/.ssh/id_rsa.pub root@alterpath:/tmp 

login to the TS/ACS/KVM box normally and append the public key. 

# ssh root@alterpath 
Password: ....

[root@CAS root]# cat /tmp/id_rsa.pub >> /etc/ssh/authorized_keys 

The following entries must be present on /etc/ssh/sshd_config for the
passwordless scheme to work properly:

RSAAuthentication yes      
PubkeyAuthentication yes        
AuthorizedKeysFile      /etc/ssh/authorized_keys 

Next step is to test if the configuration has been done successfully:

[root@clusterhost root]# ssh root@alterpath
[root@CAS root]#

If it logins automatically without asking for a password, then everything
has been done correctly!

Note that such configuration procedure (including generation of the key pair) 
has to be done for each machine in the cluster which intends to use the 
AlterPath PM as a STONITH device.

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Any questions please contact Cyclades support at <support@cyclades.com> 
or <marcelo.tosatti@cyclades.com>