If a confluent collective member is stopped, then the
HTTPS check passes. If we end up with a 503 indicating
the other end has a missing confluent, fall back to the loop
to check for other living collective members.
This provides nodeinventory (mac and -s most interestingly),
nodepower, nodesetboot (and by extension, nodedeploy -n),
and nodeconsole (console.method=vcenter).
localhost was added to ssh principals, but should not be used
as a candidate in syncfiles.
The syncfileclient should already be filtering this possibility,
but best to filter it everywhere that makes sense.
A node with private, unroutable addresses relative to
the deployment server may cause the deployment server
to select an unroutable address.
Address this with two strategies.
First, if any of the addresses appear local to the deployment server
networks, prefer those and filter out unroutable.
Secondly, if a node is purely remote, and thus all addresses routable,
then make all the addresses a candidate. However, since the
client can't possibly be using fe80::, we can replace the principal list
with just the clientip, provided it appears in the principal list.
If a node has not been asked to open any locally managed
video consoles before it was asked to open a peer managed console,
it would fail to start the needed vinz service.
Work around this by detecting that scenario and giving
the vinz subsystem a chance to fix itself.
Node attribute ntp.servers in nodeattrib ca now be used in stateless images
modified: confluent_osdeploy/el7-diskless/profiles/default/scripts/onboot.sh
modified: confluent_osdeploy/el8-diskless/profiles/default/scripts/onboot.sh
modified: confluent_osdeploy/el9-diskless/profiles/default/scripts/onboot.sh
It turns out that specifying height and width explicitly
does not guarantee that the image protocols will actually fill
the specified space. Notably iterm will honor aspect ratio
(which is good), but leave the cursor where the image would
naturally leave it (which is difficult with relative positioning).
Previously, relative positioning was used as a workaround
for the fact that save/restore or any absolute positioning may
be fouled by incurring scroll.
To make cursor save/restore work, we determine the total rows and
print newlines enough to incur scroll and then move cursor back up.
This lets us use save/restore to ignore cursor movement by the image.
When parceling out the screen real estate, avoid either the height
or the width from getting way out of proportion.
Better to let screen be unused than abuse it to distort the
aspect ratio too much.
Only for kitty graphics protocol.
Also, attempt to use pillow to convert, if available. Kitty itself
needs this, Konsole can work either way.
It currently does not preserve aspect ratio, to do that
we pretty much need to do some work with pillow.
If we specify just the height, then ratio is preserved, but it won't
honor the designed bounding box on wide screenshots. Also
Konsole won't even honor just one scaling factor.
So the better thing would be to determine the aspect ratio, which
needs pillow.
This directs CLI with image output to use a preferred protocol.
This is retroactively applied to stats.
Currently we prefer kitty, as it seems to be the most widely supported.
Though some things only support iterm, so that's an option.
And some only support sixel, but the user has to be the one to
figure out adding pysixel dependency.
The fe80:: is hopeless, try to send ipv4 just in case.
Technically speaking, the user may be using a different address
or real ipv6 and the ipv4 guess might fail, but it probably won't.
On exit, clear the terminal buffer and invalidate the session. This
avoids the web ui being very attached to a closed, dead session, and
leaking stale buffer to a reused sessionid.
For confetty, treat starting a shell session more like starting a
console session.
If an attempt to resize a dead session is attempted,
ignore failures.
