We have two SP computers with 8 nodes each and ocasionaly we have to execute comands on all of them. We do that with ssh private and public keys without passphrase. I a loop we do ssh node* comand The problem is: After a few nodes ssh client waits for a long time and after that every new connection is slower. It looks to me like ssh client has used all the entropy for generating session keys and than has to wait for the new keys to be generated. I'm just guessing. OS is AIX 4.3.2 and openssh is 2.3 p1. Does any body know what could be the problem and how it can be solved? We tried executing comands from AIX and linux, and we get the same problem only on linux I can execute the command on more nodes before it starts to be slow. I tested with loop: while true do ssh node date done Any help apreciated.
mouring at etoh.eviladmin.org
2001-Oct-08 14:31 UTC
Executing ssh commands on many computers
Use PRNGd and a newer version of OpenSSH. PRNGd is a long standing entropy generation system which should help out in your problem. - Ben On Mon, 8 Oct 2001, [windows-1250] Dean Luka Domikuli? wrote:> We have two SP computers with 8 nodes each and > ocasionaly we have to execute comands on all of them. > We do that with ssh private and public keys without > passphrase. I a loop we do > > ssh node* comand > > The problem is: > After a few nodes ssh client waits for a long time > and after that every new connection is slower. > > It looks to me like ssh client has used all the entropy > for generating session keys and than has to wait for the new > keys to be generated. > > I'm just guessing. > > OS is AIX 4.3.2 and openssh is 2.3 p1. > > Does any body know what could be the problem > and how it can be solved? > > We tried executing comands from AIX and linux, > and we get the same problem only on linux > I can execute the command on more nodes before it > starts to be slow. > I tested with loop: > > while true > do > ssh node date > done > > > Any help apreciated. >