After a little bit more digging, I think the cygwin name is coming from the output of getent here:
https://cygwin.com/git/gitweb.cgi?p=cygwin-csih.git;a=blob;f=cygwin-service-installation-helper.sh;h=10ab4fb6d47803c9ffabdde51923fc2c3f0496bb;hb=7ca191bebb52ae414bb2a2e37ef22d94f2658dc7#l2705 At this point, I’m not sure what causes getent to return different values when run in automation, and when run manually. I wonder if there is some kind of race condition, such that some subsystem is still updating at the point I install cygwin sshd. For reference, this is the powershell script, see lines 77 onwards: https://hg.mozilla.org/try/file/4905af7c52e5/testing/taskcluster/worker_types/win2012r2/aws_userdata Thanks! Pete > On 03 Oct 2015, at 19:12, Peter Moore <pmo...@mozilla.com> wrote: > > Hi, > > I have a powershell script for installing cygwin and setting up sshd which I > am using as UserData when firing up a Windows 2012 R2 instance in AWS EC2. > > The same command succeeds when run manually, but fails when called from > automation. I’m trying to understand what it is that is different, so I can > fix it in automation. > > The command called is: > > ssh-host-config -y -c 'ntsec mintty' -u 'cygwinsshd' -w 'qwe123QWE!@#' > > When I run manually, logged in as Administrator, I get a log line like this > (notice the correct “Cygwin name”): > > *** Query: Create new privileged user account 'WIN-EFPDIM0SAUP\cygwinsshd' > (Cygwin name: ‘cygwinsshd')? (yes/no) yes > > When I run from automation, the log line looks like this (notice the > incorrect “Cygwin name”): > > *** Query: Create new privileged user account 'WIN-EFPDIM0SAUP\cygwinsshd' > (Cygwin name: 'win-efpdim0saup+cygwinsshd')? (yes/no) yes > > It seems the extended “Cygwin name” which I get in automation causes > ssh-host-config to fail. I’m trying to establish what causes the cygwin name > to get the prefix of the machine name, since this seems to cause the problem. > > For reference, below I’ve put the logs in both the successful (manual) case, > and the failing (automated) case. > > If anyone can point me to the source code of ssh-host-config I’m also happy > to dig - I couldn’t find it online. So if you’re not sure, but know where the > source is, I’m happy to look. > > Many thanks in advance! > Pete > > > > SUCCESSFUL run (when executed manually): > > *** Query: Create new privileged user account 'WIN-EFPDIM0SAUP\cygwinsshd' > (Cygwin name: ‘cygwinsshd')? (yes/no) yes > *** Info: User ‘cygwinsshd' has been created with password 'qwe123QWE!@#'. > *** Info: If you change the password, please remember also to change the > *** Info: password for the installed services which use (or will soon use) > *** Info: the ‘cygwinsshd' account. > > *** Info: The sshd service has been installed under the ‘cygwinsshd' > *** Info: account. To start the service now, call `net start sshd' or > *** Info: `cygrunsrv -S sshd'. Otherwise, it will start automatically > *** Info: after the next reboot. > *** Info: Host configuration finished. Have fun! > > > FAILED run (when called in automation): > > *** Query: Create new privileged user account 'WIN-EFPDIM0SAUP\cygwinsshd' > (Cygwin name: 'win-efpdim0saup+cygwinsshd')? (yes/no) yes > *** Info: User 'win-efpdim0saup+cygwinsshd' has been created with password > 'qwe123QWE!@#'. > *** Info: If you change the password, please remember also to change the > *** Info: password for the installed services which use (or will soon use) > *** Info: the 'win-efpdim0saup+cygwinsshd' account. > > *** Warning: Setting password expiry for user 'win-efpdim0saup+cygwinsshd' > failed! > *** Warning: Please check that password never expires or set it to your needs. > No user or group 'win-efpdim0saup+cygwinsshd' known. > *** Warning: Assigning the appropriate privileges to user > 'win-efpdim0saup+cygwinsshd' failed! > *** ERROR: There was a serious problem creating a privileged user. >
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