add progress tracking flag to monitor VM startup state using cloud-init #3846

olamilekan000 · 2025-08-17T03:57:59Z

change implements progress tracking for monitoring VM state.

implements issue

Signed-off-by: olalekan odukoya <odukoyaonline@gmail.com>

AkihiroSuda

Thanks

norio-nomura · 2025-08-24T13:19:33Z

pkg/hostagent/hostagent.go

+	scanner := bufio.NewScanner(stdout)
+	cloudInitFinished := false
+
+	for scanner.Scan() {


This loop appears to run indefinitely.
The ssh -F … sudo tail -n +1 -f /var/log/cloud-init-output.log process continues after limactl start --progress finishes.
Also, some times limactl start --progress never stop even if Cloud-init v. 25.1.2-0ubuntu0~24.04.1 finished received.

I have tried to reproduce this but couldn't as everything works fine on my end. Although, I think a timeout context can be added for safety purpose. Can you share how you were able to find the bug?

I have opened a ticket for the timeout and also implemented the fix. You can check here for it.

Can you share how you were able to find the bug?

It can be reproduced on my Mac (Apple M2 Pro) with the following:

limactl start template://ubuntu-lts --name=default --progress --set .containerd.user=false

built on current HEAD

$ limactl --version limactl version 1.2.0-193-gd4f4911e

norio-nomura · 2025-08-25T00:22:25Z

pkg/instance/start.go

 				return true
 			}
+
+			if showProgress && !cloudInitCompleted {


Received ev.Status.Running=true event may be ignored here.
It should add checking receivedRunningEvent && cloudInitCompleted like following:

} else if ev.Status.Running { receivedRunningEvent = true ... } else if receivedRunningEvent && cloudInitCompleted { ... return true }

norio-nomura · 2025-08-25T06:14:18Z

Found another issue.
/var/log/cloud-init-output.log contains the previous boot session's log.
So, it needs to cut the log from the beginning of the latest boot session.

norio-nomura · 2025-08-25T06:18:33Z

border of the session in /var/log/cloud-init-output.log:

LIMA 2025-08-25T15:04:03+09:00| Exiting with code 0
Cloud-init v. 25.1.4-0ubuntu0~24.04.1 finished at Mon, 25 Aug 2025 06:04:03 +0000. Datasource DataSourceNoCloud [seed=/dev/vdb].  Up 5.37 seconds
Cloud-init v. 25.1.4-0ubuntu0~24.04.1 running 'init-local' at Mon, 25 Aug 2025 06:07:19 +0000. Up 1.00 seconds.
Cloud-init v. 25.1.4-0ubuntu0~24.04.1 running 'init' at Mon, 25 Aug 2025 06:07:21 +0000. Up 2.59 seconds.

norio-nomura · 2025-08-25T06:23:58Z

How can we detect the beginning of the current boot session in the log?

norio-nomura · 2025-08-25T06:46:01Z

filed #3907

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This release also commemorates the promotion of the project from CNCF [Sandbox](https://www.cncf.io/sandbox-projects/) to [Incubating](https://www.cncf.io/projects/) 🎉. #### Highlights - [Experimental plug-in subsystem for VM driver infrastructure](https://lima-vm.io/docs/dev/drivers/). This will help implementing third-party plugins without modifying the code base of Lima. Thanks to [GSoC 2025](https://gist.github.com/unsuman/ff31a323ecef2289bf065882726ed7f0) contributor [@unsuman](https://github.com/unsuman) . - [Experimental krunkit VM driver](https://lima-vm.io/docs/config/vmtype/krunkit/) for supporting GPU acceleration ([#4137](lima-vm/lima#4137), thanks to [@unsuman](https://github.com/unsuman)) - [Experimental integration for Model Context Protocol (MCP)](https://lima-vm.io/docs/config/ai/outside/) ([#3744](lima-vm/lima#3744)). i.e., Lima can be now used as a sandbox for AI agents such as Gemini. - Add `limactl (start|restart) --progress` flag to show the progress of provisioning ([#3846](lima-vm/lima#3846), [#3915](lima-vm/lima#3915), thanks to [@olamilekan000](https://github.com/olamilekan000) [@norio-nomura](https://github.com/norio-nomura)) - Add `limactl shell --preserve-env` flag to propagate env vars from the host to VM ([#3830](lima-vm/lima#3830), thanks to [@olamilekan000](https://github.com/olamilekan000)) #### Other notable changes - `/tmp/lima` is no longer mounted by default ([#3951](lima-vm/lima#3951)) - SSH port is no longer hard-coded to 60022 for the "default" instance ([#3780](lima-vm/lima#3780)) - Forward UDP ports by default ([#4054](lima-vm/lima#4054)) - Support CLI plugins ([#3834](lima-vm/lima#3834), [#4009](lima-vm/lima#4009), thanks to [@olamilekan000](https://github.com/olamilekan000)) - Support custom URL scheme plugins ([#3937](lima-vm/lima#3937), thanks to [@jandubois](https://github.com/jandubois)). `template://default` is now recommended to be written as `template:default`. The old form is still supported. ##### Details - VM driver infrastructure: - [Experimental plug-in subsystem for VM driver infrastructure](https://lima-vm.io/docs/dev/drivers/) ([multiple MRs](https://github.com/lima-vm/lima/pulls?q=is%3Apr+milestone%3Av2.0.0+is%3Aclosed+label%3Aarea%2Fvmdrivers), thanks to [@unsuman](https://github.com/unsuman)) - krunkit: - [Experimental krunkit VM driver](https://lima-vm.io/docs/config/vmtype/krunkit/) for supporting GPU acceleration ([#4137](lima-vm/lima#4137), thanks to [@unsuman](https://github.com/unsuman)) - VZ: - Support Rosetta AOT Caching with CDI ([#3858](lima-vm/lima#3858), thanks to [@norio-nomura](https://github.com/norio-nomura)) - Support accelerating SSH using `AF_VSOCK` ([#3979](lima-vm/lima#3979), thanks to [@norio-nomura](https://github.com/norio-nomura)) - QEMU: - Fallback to TCG when KVM is not available on Linux hosts ([#4204](lima-vm/lima#4204)) - MCP: - [Experimental integration for Model Context Protocol (MCP)](https://lima-vm.io/docs/config/ai/outside/) ([#3744](lima-vm/lima#3744)). Lima now provides MCP tools for reading, writing, and executing local files using a VM sandbox. Known to work with Google Gemini CLI. - `limactl` CLI: - Add `limactl (start|restart) --progress` flag to show the progress of provisioning ([#3846](lima-vm/lima#3846), [#3915](lima-vm/lima#3915), thanks to [@olamilekan000](https://github.com/olamilekan000) [@norio-nomura](https://github.com/norio-nomura)) - Add `limactl (create|start|edit) --port-forward` flag for static port forwarding ([#3699](lima-vm/lima#3699), thanks to [@Horiodino](https://github.com/Horiodino)). Usually not needed, but useful for instances created with `--plain`. - Add `limactl (create|start|edit) --ssh-port` flag ([#3791](lima-vm/lima#3791)) - Add `limactl (create|start|edit) --mount-only` flag ([#3947](lima-vm/lima#3947)). Similar to `--mount`, but overrides the existing mounts. Useful for mounting `$(pwd)`. - Support specifying `--set` multiple times in `limactl (create|start|edit)` ([#4197](lima-vm/lima#4197), thanks to [@AndiDog](https://github.com/AndiDog)) - Add `limactl shell --preserve-env` flag to propagate env vars from the host to VM ([#3830](lima-vm/lima#3830), thanks to [@olamilekan000](https://github.com/olamilekan000)). See also [`LIMA_SHELLENV_ALLOW`](https://lima-vm.io/docs/config/environment-variables/#lima_shellenv_allow) and [`LIMA_SHELLENV_BLOCK`](https://lima-vm.io/docs/config/environment-variables/#lima_shellenv_block). - Support CLI plugins ([#3834](lima-vm/lima#3834), [#4009](lima-vm/lima#4009), thanks to [@olamilekan000](https://github.com/olamilekan000)) - Support custom URL scheme plugins ([#3937](lima-vm/lima#3937), thanks to [@jandubois](https://github.com/jandubois)). `template://default` is now recommended to be written as `template:default`. The old form is still supported. - Add `limactl copy --backend=rsync` flag as an alternative to `scp` backend ([#3143](lima-vm/lima#3143), thanks to [@olamilekan000](https://github.com/olamilekan000)) - Add `limactl list--yq` and `limactl info --yq` flags ([#3998](lima-vm/lima#3998), thanks to [@jandubois](https://github.com/jandubois)) - Add `limactl rename OLD NEW` ([#4207](lima-vm/lima#4207)) - Deprecate `--yes` and introduce `limactl (clone|rename|edit|shell) --start` instead ([#4108](lima-vm/lima#4108), [#4285](lima-vm/lima#4285), thanks to [@Horiodino](https://github.com/Horiodino) [@nlordell](https://github.com/nlordell)) - YAML: - Migrate `cpuType` to `vmOpts.qemu` ([#3500](lima-vm/lima#3500), thanks to [@unsuman](https://github.com/unsuman)) - Add `yq` provision mode ([#3892](lima-vm/lima#3892), thanks to [@norio-nomura](https://github.com/norio-nomura)) - Prohibit relative paths in YAML ([#3950](lima-vm/lima#3950)). Relative paths were never intended to be supported, but they were accidentally allowed due to a regression in v1.1.0. The CLI command `limactl (create|start|edit) --mount DIR` still supports relative paths. - Default template: - Remove `/tmp/lima` mount ([#3951](lima-vm/lima#3951)) - Stop hardcoding SSH port 60022 ([#3780](lima-vm/lima#3780)) - Network: - Enable mDNS for vzNAT and socket\_vmnet ([#4272](lima-vm/lima#4272), thanks to [@norio-nomura](https://github.com/norio-nomura)) - Port forwarding: - Support port forwarding in plain mode ([#3699](lima-vm/lima#3699), thanks to [@Horiodino](https://github.com/Horiodino)) - Support host sockets in gRPC port forwarder ([#4008](lima-vm/lima#4008), thanks to [@norio-nomura](https://github.com/norio-nomura)) - Forward UDP ports by default ([#4054](lima-vm/lima#4054)) - Eliminated 3-second delay for detecting ports ([#4066](lima-vm/lima#4066)) - Removed iptables watcher for `sudo nerdctl run -p ...` ([#4107](lima-vm/lima#4107)). `sudo nerdctl run -p ...` now requires nerdctl v2.1.6 or later. - Improved performance of gRPC forwarder ([#4247](lima-vm/lima#4247), thanks to [@balajiv113](https://github.com/balajiv113)) - Support UDP in Kubernetes ([#4233](lima-vm/lima#4233)) - Change default of `guestIPMustBeZero` to `true` when `guestIP` is `0.0.0.0` ([#4221](lima-vm/lima#4221), thanks to [@jandubois](https://github.com/jandubois)) - Build system: - Remove `Kconfig` and `config.mk`, in favor of Makefile variables ([#3732](lima-vm/lima#3732)) - Support Fedora, RHEL, and relevant host distributions ([#4228](lima-vm/lima#4228), thanks to [@valdela1](https://github.com/valdela1)) - Templates: - `alpine`, `alpine-iso`: update to Alpine 3.22 ([#4184](lima-vm/lima#4184), [#4190](lima-vm/lima#4190), thanks to [@jandubois](https://github.com/jandubois)) - `debian`: update to Debian 13 ([#4029](lima-vm/lima#4029), thanks to [@unsuman](https://github.com/unsuman)) - `docker`, `docker-rootful`: Enable containerd image store ([#3941](lima-vm/lima#3941), thanks to [@norio-nomura](https://github.com/norio-nomura)) - `fedora`: update to Fedora 43 ([#4255](lima-vm/lima#4255)) - `opensuse`: update to openSUSE Leap 16 ([#4203](lima-vm/lima#4203)) - `oraclelinux`: update to Oracle Linux 10 ([#4236](lima-vm/lima#4236), thanks to [@valdela1](https://github.com/valdela1)) - `ubuntu`, `default`: update Ubuntu to 25.10 ([#4202](lima-vm/lima#4202)) - `k0s`: New template ([#3728](lima-vm/lima#3728), thanks to [@plandem](https://github.com/plandem)) - `experimental/ubuntu-next`: update to Ubuntu 26.04 pre-release ([#4311](lima-vm/lima#4311)) - Project: - Invite Ansuman Sahoo ([@unsuman](https://github.com/unsuman)) as a Reviewer ([#4003](lima-vm/lima#4003), thanks to [@jandubois](https://github.com/jandubois)) - Promote from CNCF Sandbox to Incubating ([#4201](lima-vm/lima#4201)) Full changes: <https://github.com/lima-vm/lima/milestone/59?closed=1> Thanks to [@AndiDog](https://github.com/AndiDog) [@Horiodino](https://github.com/Horiodino) [@afbjorklund](https://github.com/afbjorklund) [@alexandear](https://github.com/alexandear) [@ashwat287](https://github.com/ashwat287) [@balajiv113](https://github.com/balajiv113) [@bonifaido](https://github.com/bonifaido) [@dharsanb](https://github.com/dharsanb) [@gnawhleinad](https://github.com/gnawhleinad) [@iamleot](https://github.com/iamleot) [@jandubois](https://github.com/jandubois) [@kachick](https://github.com/kachick) [@muchzill4](https://github.com/muchzill4) [@ningmingxiao](https://github.com/ningmingxiao) [@nlordell](https://github.com/nlordell) [@norio-nomura](https://github.com/norio-nomura) [@olamilekan000](https://github.com/olamilekan000) [@plandem](https://github.com/plandem) [@stek29](https://github.com/stek29) [@unsuman](https://github.com/unsuman) [@valdela1](https://github.com/valdela1) [@vax-r](https://github.com/vax-r) [@vishalanarase](https://github.com/vishalanarase) [@zyfy29](https://github.com/zyfy29) #### EOL of v1.2 Lima v1.2 will continue to receive security updates and critical bug fixes until **2026-02-06** (3 months from now). See also <https://lima-vm.io/docs/releases/>. #### Usage ```console $ limactl create $ limactl start ... INFO[0029] READY. Run `lima` to open the shell. $ lima uname Linux ``` *** The binaries were built automatically on GitHub Actions. The build log is available for 90 days: <https://github.com/lima-vm/lima/actions/runs/19130682878> The sha256sum of the SHA256SUMS file itself is `112f1ef1d9850e29b4be425ca71e8b6ac686f593ff741164885b51fbd6919ca6` . *** Release manager: [@AkihiroSuda](https://github.com/AkihiroSuda) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. 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add progress tracking flag to monitor VM startup state using cloud-init

dcbab2f

Signed-off-by: olalekan odukoya <odukoyaonline@gmail.com>

olamilekan000 force-pushed the add-progress-flag-to-start-cmd branch from 9df1807 to dcbab2f Compare August 17, 2025 04:00

AkihiroSuda added this to the v2.0.0 milestone Aug 19, 2025

AkihiroSuda approved these changes Aug 19, 2025

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AkihiroSuda merged commit 8a4811d into lima-vm:master Aug 19, 2025
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AkihiroSuda linked an issue Aug 19, 2025 that may be closed by this pull request

limactl start should optionally show the progress of the provision scripts #2183

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norio-nomura reviewed Aug 24, 2025

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norio-nomura mentioned this pull request Aug 24, 2025

Add timeout to cloud-init progress monitoring #3903

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norio-nomura reviewed Aug 25, 2025

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norio-nomura mentioned this pull request Aug 25, 2025

limactl restart should accept --progress flags #3906

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add progress tracking flag to monitor VM startup state using cloud-init #3846

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