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They get deleted anyways since we blow away the tmpdir, but we expect
people to be using a local HTTP proxy. We stopped trying to cache
packages internally as that caused conflicts with the yum lock with
concurrently executing composes.
After a discussion on what the status command should offer a
sysadmin, we decided to try a column output format similar to that
of systemctl or docker images. This will print the timestamp,
a truncated checksum, the osname, and the refspec of each
deployment. It also includes a --pretty option to print
the information formatted in rows with the full checksum and a
title to specify the default and the rollback target.
This includes several changes to format the code to follow GNU Coding Standards as per
the restof rpm-ostree. This includes fixing indentations, adding spaces between
identifers and parentheses, replacing "goto print" with an else structure, and
reformatting print statements into complete sentences for internationalization.
This allows administrators to configure between deployments and easily see which deployment
they are booted into as well as indicating which is chronologically most recent. This makes
the process more user-friendly, rather than requiring the user to remember which deployment
checksum corresponds to the most recent upgrade.
Currently the systemd RPM ships with default.target ->
graphical.target, which is either itself changed by Anaconda (via
parsing /etc/sysconfig/desktop, which...anyways let's stop here).
Or anaconda might set it directly to multi-user.target.
For rpm-ostree, we perform some minimal level of "preconfiguration"
per tree, so they are directly usable without an intervening
installer.
As an example for fedora-atomic/base/core, we just want
multi-user.target. Thus, this patch provides the treefile author a
declarative mechanism to set it.
Currently on an Atomic compose, I'm seeing abrtd trying to write to
/usr/share/rpm/.dbenv.lock, which is denied by policy because it's
usr_t. There are multiple ways to address this, but there's no good
reason to leave the lock files and __db* files around.
rpm appears to operate correctly without them if calling process
merely gets EROFS.
This is exactly the code from "ostree admin switch", except it's
called "rebase" because in the future it will also carry along any
locally layered packages.
And do the same for "sign". This way we can have the compose server
utilities cleanly separated from what most people will see, which is
the client side tools.
The way this works is still fairly naive in that we hash in two
inputs:
1) The treefile JSON
2) The result of rpm -qa
If both of those are a hit, we reuse the existing commit.
Otherwise it just doesn't work. Note this hack is only necessary for
the case where some package pulls in e.g. fedora-release in the
initial transaction set when we're trying to install nss-altfiles.
This will move to a separate repository. This allows a clearer
separation between the core tool (which is shipped on client systems
too), and the compose infrastructure.
Furthermore, I want to make the autobuilder a Docker container.
It's a lot clearer if the inputs, outputs, and cache state are cleanly
separated. At least the "lorax" tool relies on a local HTTP cache
instead of keeping around the yum repos - let's do the same.
This commit causes treecompose to require a --repo argument, and it
also gains an optional --proxy argument.
This is just the start of moving more functionality into rpm-ostree,
with the goal of more tightly binding the rpm and ostree worldviews.
For exmaple, supporting package installation on top, showing the
package-level diff between trees, etc.
The web page previously bounced out to the "fedora-atomic" component -
but we really want a bit of web UI that's shared between products.
Like how Koji is a generic frontend.
In particular, this now comes with a start of a generic "repoweb".
For convenience, allow users to create an "overrides/" directory which
is a repo. If it exists, the builder automatically adds it.
(However, we should likely disallow distributing these builds on
the network)
We use the new unified OSTree API (OstreeSePolicy) to perform
labeling, rather than having our own here.
Also create a new rpm-ostree-relabeling-helper that is run to label
any leftover files such as /etc/fstab that we create offline, and also
to relabel the entire disk.
Unfortunately when composing from RHEL7 a current rawhide tree, the
PCRE version mismatch causes none of the regexps to match...
Work around this by temporarily moving the .bin files out of the way.
This is really a hack though.
The real fix is to change libselinux to check pcre_version().
These differ each run, polluting upgrades. James says we don't need
them anyways.postprocess: Remove var_uuid files from yumdb
These differ each run, polluting upgrades. James says we don't need
them anyways.
This is somewhat similar to what we've been doing with Continuous; we
take the manifest.json, and turn it into a "snapshot". Except here
there is a notion of inheritance.
This gets stored into the tree as /usr/share/rpm-ostree/treefile.json.
Additionally, it goes into the autobuilder directory in
products-built.json. Though really we should split up that file,
since it will be kind of...large.
It turns out OS X has bzip2 but not xz installed by default, so let's
use that instead. QCOW2 stays as xz since we can assume GNU/Linux
users have it better.
We really want people using these trees to know what went in it. If
the tree doesn't actually have /usr/bin/rpm inside it, then do an
"rpm -qa | sort" and dump that into: /usr/share/rpm-manifest.txt
This will help our story with GPL compliance too.
OSTree really wants /var to come empty; it's not going to be practical
to change every RPM right now though. So, let's dynamically turn the
content from /var into systemd-tmpfiles.d snippets.
This allows us to skip the whole install process if the
RPMs haven't changed, which is a rather large win.
Part of this commit involves some code to attempt to talk to "yum
shell" for dependency resolution, in an attempt to avoid depsolving
twice, which just isn't really going to work, since "yum shell" isn't
an API as it turns out.
The only other real alternative is doing something PackageKit-like,
which is ~4000 lines of very nontrivial Python.
There are two major reasons:
1) I want to do things like process SELinux labels here, and that
type of thing is best done in C.
2) There are presently 3 languages in this code, and this takes us
down to just two.
At the moment, a lot of RPM content has files whose content derives
from timestamps (like .pyc files). We really don't need to do another
commit to the repository if it's just these files which changed.
Fix this by caching the package list at the rpm-ostree level, and
don't commit if it hasn't changed.
We're moving more towards the autobuilder model; this allows us to
keep all of the data in one place. Important for the
cloud.fedoraproject.org instance since /mnt/ostree is the large
filesystem.
The two transaction thing is bad for multiple reasons, but what bit me
specifically was something in the group transaction pulling in
'kernel-debug', and then installing 'kernel' later.
