This commit is a workaround due to how older debian and ubuntu systems
fail to properly restart networking. Instead of relying on the init
scripts or ifup/down tools to restart each interface, this commit
instead restarts each interface individually
This commit adds some additional logic that falls back to using the
ifdown/ifup tools to restart networking. On Ubuntu 14.04, the init
script was designed to always fail to restart newtorking, so it needs
to use the ifdown/up tools instead. This commit will use the networking
init script as a last resort to restart networking, assuming other
commands haven't broken networking already.
https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1301015
Prior to this commit, the hostname was set with one big bash script and
attempted to determine what tools are available. This commit changes
that by splitting out that tool check on the Vagrant side of things with
the GuestInspection class, and adds back restarting networking to get a
DHCP lease with the change rather than using `dhclient`. This pattern
matches how hostnames are set in the redhat capability.
Prior to this commit, when setting up private networks on Ubuntu using
netplan, it assumed that the guest was using systemd, the suggested
default tool to manage networking, and did not take into account devices
that could be managed with NetworkManager. This commit fixes that by
looking at the devices managed on the guest to see if its managed by
NetworkManager, and if so, use that renderer for netplan instead of
networkd.
/etc/issue is far from being a reliable source for OS detection as it
can be changed by a user without affecting any OS functionality. As
newer Debian systems run systemd by default, check for /etc/os-release
and fallback to lsb_release for older Debian versions. Check #7625 for
a similar issue. Even lsb_release is not manatory, therefore keep the
current code of parsing /etc/issue to avoid regressions.
This updates the guest capabilities to run in as few communicator
commands as possible. Additionally, it fixes a number of issues around
hostname and idempotency.
This patch was tested against:
- puphpet/debian75-x64
- debian/jessie64
- debian/wheezy64
with custom networking, custom hostname, and rsync shared folders.
This fixes a fairly large tempfile leak. Vagrant uses a template
renderer to write network configuration files locally to disk. Then,
that temporarily file is uploaded to the remote host and moved into
place. Since Vagrant is such a short-lived process, GC never came along
and cleaned up those tempfiles, resulting in many temporary files being
created through regular Vagrant usage.
The Util::Tempfile class uses a block to ensure the temporary file is
deleted when the block finishes. This API required small tweaks to the
usage, but provides more safety to ensure the files are deleted.
Ubuntu versions prior to 16.04 always returned a successful exit status,
even if one tried to down an interface that does not exist. This
behavior changed in Ubuntu 16.04 to return an error. This commit
preserves the old behavior.
Fixes GH-7155
When a vagrant box has two private network ips /etc/network/interfaces
will duplicate eth2 and bigger. sed matches greedy, so the first
#VAGRANT-END matches. This will result in:
/etc/network/interfaces:29: interface eth2 declared allow-auto twice
/sbin/ifup: couldn't read interfaces file "/etc/network/interfaces"
When using pty=true, removing files using sudo may request confirmation,
which will hang the connection.
Similarly, sometimes assumptions about file existence may be wrong and
in those cases it seems better to continue on as long as the file does
not exist, so -f makes sense there, too.