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path: root/bin/debvm-create
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2025-03-29debvm-create: create a more sensible /etc/hostsHelmut Grohne
This is close to what the debian installer sets up.
2025-03-27fix deletion of root password againmainHelmut Grohne
Unless passwd is installed, shadow is not enabled. That is, shadow being enabled is not a boolean. It can be enabled per user and systemd enables it for its own users, so shadow exists, but may not contain the root user. Thus the password deletion logic need a bit more fancyness for covering systems that lack the passwd package.
2024-08-13debvm-create: implement password deletion with correctly quoted sedHelmut Grohne
While using the --prefix option is great, it's only available in trixie. Hence, revert back to sed, this time getting the quoting right (by avoiding backslashes using character sequences) and also apply to all lines of the file as systemd seems to be adding users to the front. Reported-by: Vasyl Vavrychuk Fixes: 984a1155456d ("debvm-create: revert back to passwd for deleting the root password") Closes: #17
2024-08-12debvm-create: revert back to passwd for deleting the root passwordHelmut Grohne
We should avoid --root as that will chroot and load libraries. The sed solution somehow didn't work due to a quoting issue. What we can use is passed --prefix as that avoids loading libraries and explicitly does not support NIS and LDAP, which we don't need here. Reported-by: Vasyl Vavrychuk Thanks: Johannes Schauer Marin Rodrigues <josch@mister-muffin.de> Fixes: e4ecc7f745c5 ("debvm-create: avoid using passwd --delete") Closes: #17
2024-08-09debvm-create: avoid using passwd --deleteHelmut Grohne
passwd will chroot() into the target tree and then load shared libraries. This tends to work badly for old releases and for foreign architectures or combinations thereof. As a result, it sometimes fails with Cannot determine your user name. In practice, it removes a single asterisk from the first line of /etc/shadow (at least for jessie to trixie). This is something, we can also do via sed. Reported-by: Sylvain Beucler <beuc@debian.org> Fixes: d2d8b9965d39 ("debvm-create: avoid failing when we install no passwd")
2024-06-23debvm-create: do install loginHelmut Grohne
login has become non-essential and autologin simply respawns indefinitely when login is not installed. We better install it explicitly and that works on all releases. If we are only interested in logging in via ssh (and thus --skip=autologin), no login package is needed.
2024-05-08debvm-create: Increase default VM size to 2GBenjamin Drung
The Ubuntu 24.04 (noble) image is 1.1G in size and an image size of 1 GB does not fit it. ``` $ du -ht 50M / 77M /boot 56M /usr/lib/x86_64-linux-gnu 106M /usr/lib/modules/6.8.0-31-generic/kernel/drivers 147M /usr/lib/modules/6.8.0-31-generic/kernel 154M /usr/lib/modules/6.8.0-31-generic 154M /usr/lib/modules 78M /usr/lib/firmware/mellanox 72M /usr/lib/firmware/mrvl/prestera 78M /usr/lib/firmware/mrvl 59M /usr/lib/firmware/qcom 481M /usr/lib/firmware 721M /usr/lib 780M /usr 86M /var/lib/dpkg 170M /var/lib/apt/lists 170M /var/lib/apt 257M /var/lib 266M /var 1.1G / ``` Increase the default VM size to 2G. LP: #2064921
2024-05-02debvm-create: turn of incompatible ext features for jessieHelmut Grohne
2024-04-10debvm-create: clarify that passing an empty string to -r may be okHelmut Grohne
2024-02-27debvm-create: explain the trap 'exit 1'Helmut Grohne
Reported-by: Johannes Schauer Marin Rodrigues <josch@mister-muffin.de>
2024-02-27debvm-create: emit an empty /devHelmut Grohne
With the change from genext2fs to mkfs.ext4, we no longer create an intermediate tar archive and thus no longer create device nodes if using unshare. Thus our output is slightly unreproducible. At the same time, we never need devices, because /dev is mounted as devtmpfs. Hence, we unconditionally skip them and thus improve reproducibility. Reported-by: Johannes Schauer Marin Rodrigues <josch@mister-muffin.de>
2024-02-27debvm-create: fix --skip ext4Helmut Grohne
We were truncating the output file after generating it. Instead, split the logic and create the file prior to running mmdebstrap to make permission failures fail early.
2024-02-26debvm-create: allow running without unshare againHelmut Grohne
In a CI-environment such as salsa-ci, we tend to run as root and want --mode=root rather than --mode=unshare.
2024-02-26debvm-create: switch from genext2fs to mkfs.ext4Helmut Grohne
Why? genext2fs is slow. It has O(n^2) behaviour, which becomes annoying with larger filesystems. It also creates an ext2 image and we have to upgrade it to ext4 in multiple steps. Even then, the image has an inode size of 128, which is incompatible with 2038 and does not allow storing sub-second precision time stamps. How? We use mkfs.ext4 from e2fsprogs (which is required anyway) instead. Running this from within a --customize-hook does not work, because the user namespace used for the hook often has no privileges to write to the output image. Instead, we now ask mmdebstrap to output to a directory and create the filesystem separately. We construct a special namespace that has both access to the tree and to the output image and perform the mkfs.ext4 there. As a consequence, we no longer support any mode but unshare and since mkfs.ext4 consumes the size parameter, the size syntax is reduced a bit.
2023-04-27debvm-create: recognize finit as an init systemHelmut Grohne
2023-03-06debvm-create: deprecate and hide the -a optionHelmut Grohne
At this point, we only forward -a to mmdebstrap. It's not actually that helpful to have this option on both levels, so just keep it on the mmdebstrap level.
2023-03-05debvm-create: extend examples in the manual pageHelmut Grohne
2023-02-23debvm-create: also support --initsystem=busyboxHelmut Grohne
Reported-by: Johannes Schauer Marin Rodrigues <josch@debian.org>
2023-02-23debvm-create: also support --initsystem=runitHelmut Grohne
2023-02-23debvm-create: do not fsckHelmut Grohne
Asking for a fsck pass in fstab is not what we want. Requiring fsck makes sysvinit fail when fsck.ext4 is missing. Without that pass, it happily boots without e2fsprogs. Link: https://bugs.debian.org/1028267 Thanks: Thorsten Glaster <t.glaser@tarent.de>
2023-02-20debvm-create: add --initsystem optionHelmut Grohne
This option allows changing the init system. The notable addition is sysv.
2023-02-20debvm-create: avoid failing when we install no passwdHelmut Grohne
2023-02-05debvm-create: fix resizing of output imageHelmut Grohne
resize2fs -b will not actually perform a resize. Rather, it will truncate the file to the filesystem length, reversing the earlier truncate call. Thus we need second resize2fs call to change the size of the filesystem. Fixes: 09bcaa8fe901 ("debvm-create: make the ext4 look more like ext4")
2023-02-05debvm-create: add --skip=initsystemHelmut Grohne
Closes: #1030254
2023-02-05debvm-create: install systemd-sysv rather than initHelmut Grohne
We actually expect systemd in the network configuration. Be more honest about this.
2023-02-03debvm-create: update documentation for --skip=ext4Helmut Grohne
2023-02-02debvm-create: Output image in tar format if step "ext4" is skippedGioele Barabucci
Outputting the image in tar format breaks interoperability with `debvm-run`, but makes it easier to inspect, convert or perform additional modifications of the generated image.
2023-02-02debvm-create: make the ext4 look more like ext4Helmut Grohne
One notable difference remains. metadata_csum keeps missing as tune2fs insists on doing this interactively only. Reported-by: Gioele Barabucci <gioele@svario.it> Closes: #1030252
2023-01-17debvm-create: install only one kernel imageHelmut Grohne
The apt pattern ?or does not short-circuit. It installs any pattern matching one of the arguments. On amd64, we thus get both the cloud and the non-cloud variant. There aren't that many good options to fix this, so the next best way is using a hook and running apt again, which is suboptimal in terms of repeated triggers, but likely the best we can do at present.
2023-01-17Merge branch 'cleanup' into 'main'Helmut Grohne
Cleanup See merge request helmutg/debvm!25
2023-01-17Add --skip=autologinJochen Sprickerhof
2023-01-17Allow arbitrary image sizesJochen Sprickerhof
2023-01-17expand architecture coverageHelmut Grohne
Give an example of how to use it with ports and add a few architecture-specific cases. Note that m68k and sparc64 do not actually work, because they lack PCI.
2023-01-17debvm-create: combine ?exact-name with ?not(virtual)Helmut Grohne
When apt encounters a package that does not exist, but is referenced via Recommends, Suggests, Breaks or otherwise, it errors out with a missing installation candidate. This happens for linux-image-generic on buster. To avoid this situation, we specifically ask apt to not consider virtual packages whenever we use ?exact-name.
2023-01-17debvm-create: fix syntax broken in parent commitHelmut Grohne
2023-01-17debvm-create: avoid splitting features to multiple code locationsHelmut Grohne
2023-01-17debvm-create: stop validating the suiteHelmut Grohne
The only DEBVER check left checks for jessie. We can just compare the name instead. Thus we no longer reject Ubuntu suites such as jammy. This helps with !20, but not yet with #10.
2023-01-17debvm-create: install linux-image-generic as an alternative kernel nameHelmut Grohne
This is used on Ubuntu and thus helps with !20.
2023-01-17debvm-create: use maybe-merged-usr hookHelmut Grohne
Requires mmdebstrap >= 1.3.0 Closes: #8
2023-01-17debvm-create: defer kernel selection to aptHelmut Grohne
This requires mmdebstrap >= 1.3.0. Closes: #9
2023-01-15debvm-create: update documentation for dropped mirror optionHelmut Grohne
2023-01-15debvm-create: actually drop -m from the getopts invocationHelmut Grohne
Fixes: 7a2b46697659 ("Drop mirror option")
2023-01-15debvm-create: carefully handle a -o filename starting with a dashHelmut Grohne
2023-01-15Apply 1 suggestion(s) to 1 file(s)Johannes Schauer Marin Rodrigues
2023-01-15Drop mirror optionJochen Sprickerhof
It is not needed and can also be done with: debvm-create -- "deb http://ftp.de.debian.org/debian/ unstable main"
2023-01-13debvm-create: remove --package optionHelmut Grohne
This option was meant to make it convenient to add packages, but mmdebstrap's --include provides the same convenience at more flexibility. You can provide apt patterns there provided that you use multiple --include options. So rather than duplicate this functionality under a different name, just refer to mmdebstrap thus reinforcing the notion of being a thin wrapper. This also removes the convenience of overriding the kernel image. You need to use --skip=kernel when passing --include=linux-image-something to mmdebstrap now. This implements "explicit is better than implicit".
2023-01-13Merge branch main into helmutHelmut Grohne
Resolve conflicts in debvm-create arising from adding --skip and moving the functionality to be skipped to share/customize-*.sh.
2023-01-13debvm-create: defer the decision of installing libnss-resolve to aptHelmut Grohne
Rather than check the DEBVER, let apt figure out whether it knows about a package called libnss-resolve and install it when available.
2023-01-12debvm-create: also move dpkg's available database to a hook fileHelmut Grohne
2023-01-11debvm-create: move functionality into support filesHelmut Grohne
The benefit of this change is that we don't have to escape that much. As a consequence, it becomes easier to put more code into the customization hooks, which have access to installed package versions. Thus we can reduce the use of DEBVER and thus improve working with snapshot.d.o.
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