I took it that Vincent was referring to my message of 2013-09-12 <https://groups.google.com/d/msg/ansible-project/8p3XWlo83ho/Q1SflaZ9dyAJ>. In that post I mentioned using /dev/null for the ssh UserKnownHostsFile configuration key, scoped to Host *.amazonaws.com
This configuration triggers single-threaded behavior from ansible because ssh never stores any record of connecting to the EC2 hosts: not the first time, not ever. Because known_hosts is /dev/null. -- Mike On Monday, September 29, 2014 9:30:32 AM UTC-7, Michael DeHaan wrote: > > So I'm confused - are you saying you are using known_hosts that are empty? > > This seems to be a completely unrelated question. > > The mention of /dev/null above seemed to be based on confusion that we > didn't read it, not that it was actually symlinked to /dev/null. > > Can each of you clarify? > > On Mon, Sep 29, 2014 at 12:29 PM, Michael Blakeley <[email protected] > <javascript:>> wrote: > >> Vincent, I now use a slightly different workaround. Instead of routing >> known_hosts to /dev/null I route it to a temp file. This keeps the EC2 >> noise out of my default known_hosts file, and seems to play well with >> ansible. >> >> From my ~/.ssh/config file: >> Host *.amazonaws.com >> PasswordAuthentication no >> StrictHostKeyChecking no >> UserKnownHostsFile /tmp/ec2_known_hosts >> User ec2-user >> >> >> Hope that helps you. >> >> -- Mike >> >> On Monday, September 29, 2014 8:37:43 AM UTC-7, Vincent Janelle wrote: >>> >>> Exactly like what was described at the start of this thread. :( Setting >>> the environment variable produces the desired parallel execution. >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "Ansible Project" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To post to this group, send email to [email protected] >> <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/ansible-project/550bdafe-2892-477b-9452-bbed389bfbce%40googlegroups.com >> >> <https://groups.google.com/d/msgid/ansible-project/550bdafe-2892-477b-9452-bbed389bfbce%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "Ansible Project" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/ansible-project/aa3c8257-cb5c-40b1-94fc-051fee1748fc%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
