There's a bug in version parsing that breaks this constraint when using
a prerelease enterprise version of Vault (eg 1.3.0-beta1+ent). While
this does not fix the underlying bug it does provide a workaround for
future issues related to the implicit constraint. Like the implicit
Connect constraint: *all* implicit constraints should be overridable to
allow users to workaround bugs or other factors should the need arise.
When inferring whether to use TTY, check both stdin and stdout are
terminals.
Otherwise, we get failures like the following:
```
$ nomad alloc exec --job example echo hi
hi
$ echo | nomad alloc exec --job example echo hi
hi
$ nomad alloc exec --job example echo hi | head -n1
failed to exec into task: not a terminal
```
This is the basic code to add the Windows Service Manager hooks to Nomad.
Includes vendoring golang.org/x/sys/windows/svc and added Docs:
* guide for installing as a windows service.
* configuration for logging to file from PR #6429
Nomad web UI currently fails when querying client nodes for allocation
state end endpoints, due to CORS policy.
The issue is that CORS requests that are marked `withCredentials` need
the http server to include a `Access-Control-Allow-Credentials` [1].
But Nomad Task Logs and filesystem requests include authenticating
information and thus marked with `credentials=true`[2][3].
It's worth noting that the browser currently sends credentials and
authentication token to servers anyway; it's just that the response is
not made available to caller nomad ui javascript. For task logs
specifically, nomad ui retries again by querying the web ui address
(typically pointing to a nomad server) which will forward the request
to the nomad client agent appropriately.
[1] https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Access-Control-Allow-Credentials
[2] 101d0373ee/ui/app/components/task-log.js (L50)
[3] 101d0373ee/ui/app/services/token.js (L25-L39)
The LXC task driver documentation is missing for many of the optional
task config fields, and for the recently added `gc` field on the
driver configuration.
Drew Bailey