Rewrite the tutorial to use kexec and Talm #268
Conversation
✅ Deploy Preview for cozystack ready!
To edit notification comments on pull requests, go to your Netlify project configuration. |
WalkthroughDocumentation for deploying a cluster and its prerequisites was updated for clarity, generalization, and improved organization. Installation method references were reordered, and a new guide for booting Talos Linux via Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant ExistingLinux
participant TalosLinux
participant Cozystack
User->>ExistingLinux: Install kexec-tools
User->>ExistingLinux: Download Talos kernel/initramfs
User->>ExistingLinux: Prepare network config & kernel args
User->>ExistingLinux: Run kexec --load with kernel/initramfs
User->>ExistingLinux: Run kexec --exec
ExistingLinux->>TalosLinux: Boot into Talos Linux
User->>TalosLinux: Bootstrap cluster (with talm/talosctl)
TalosLinux->>Cozystack: Prepare for installation
Estimated code review effort🎯 2 (Simple) | ⏱️ ~8 minutes Possibly related PRs
Suggested labels
Suggested reviewers
Poem
✨ Finishing Touches🧪 Generate unit tests
Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out. 🪧 TipsChatThere are 3 ways to chat with CodeRabbit:
SupportNeed help? Create a ticket on our support page for assistance with any issues or questions. Note: Be mindful of the bot's finite context window. It's strongly recommended to break down tasks such as reading entire modules into smaller chunks. For a focused discussion, use review comments to chat about specific files and their changes, instead of using the PR comments. CodeRabbit Commands (Invoked using PR comments)
Other keywords and placeholders
CodeRabbit Configuration File (
|
There was a problem hiding this comment.
Summary of Changes
Hello @NickVolynkin, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request refines the Cozystack cluster deployment tutorial by standardizing the Talos Linux installation method to use kexec for a more focused and streamlined user experience. Concurrently, it improves documentation structure by relocating generic instructions for installing Cozystack on existing Kubernetes distributions to a more relevant section within the bundles documentation.
Highlights
- Tutorial Simplification: The
deploy-cluster.mdtutorial has been updated to focus on a single, recommended method for installing Talos Linux usingkexec, removing previous installation options (PXE, ISO, Hetzner) to streamline the getting started experience. - Documentation Refactoring: General notes and mandatory settings for installing Cozystack on pre-existing or managed Kubernetes clusters have been moved from the main deployment tutorial (
deploy-cluster.md) to thepaas-hosted.mdbundle documentation, improving content organization. - Updated Prerequisites: The initial 'Before you begin' section in the deployment tutorial (
deploy-cluster.md) has been generalized to include bare metal servers alongside virtual machines as valid nodes for deployment.
Using Gemini Code Assist
The full guide for Gemini Code Assist can be found on our documentation page, here are some quick tips.
Invoking Gemini
You can request assistance from Gemini at any point in your pull request via creating an issue comment (i.e. comment on the pull request page) using either /gemini <command> or @gemini-code-assist <command>. Below is a summary of the supported commands.
| Feature | Command | Description |
|---|---|---|
| Code Review | /gemini review |
Performs a code review for the current pull request in its current state. |
| Pull Request Summary | /gemini summary |
Provides a summary of the current pull request in its current state. |
| Comment | @gemini-code-assist | Responds in comments when explicitly tagged, both in issue comments and review comments. |
| Help | /gemini help |
Displays a list of available commands. |
Customization
To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a .gemini/ folder in the base of the repository. Detailed instructions can be found here.
Limitations & Feedback
Gemini Code Assist may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with 👍 and 👎 on @gemini-code-assist comments or fill out our survey to provide feedback.
You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the Gemini Code Assist IDE Extension.
Footnotes
-
Review the Privacy Notices, Generative AI Prohibited Use Policy, Terms of Service, and learn how to configure Gemini Code Assist in GitHub here. Gemini can make mistakes, so double check it and use code with caution. ↩
395c0f8 to
f249e6f
Compare
There was a problem hiding this comment.
Code Review
This pull request refactors the "Deploy Cluster" tutorial to focus on using kexec and Talm, which simplifies the guide for new users. The change also moves information about installing on existing Kubernetes clusters to a more appropriate location within the operations documentation. Overall, these changes improve the clarity and structure of the documentation. I've identified a minor typo and provided a suggestion to further enhance the documentation's organization for better discoverability.
07034a7 to
c09ca87
Compare
There was a problem hiding this comment.
Actionable comments posted: 1
🧹 Nitpick comments (6)
content/en/docs/getting-started/deploy-cluster.md (2)
12-14: Hyphenate the compound adjective “bare-metal”As this phrase directly modifies “servers,” a hyphen avoids ambiguity.
-Make sure that you have nodes (bare metal servers or VMs) that fit the +Make sure that you have nodes (bare-metal servers or VMs) that fit the
31-34: Prefer ordered list autonegotiation, but avoid repeating “1.”Using “1.” for every bullet renders fine in Markdown but hurts raw readability. Suggest letting the renderer handle numbering while preserving sequence in the source.
-1. Install Talos Linux on your nodes or start it from another OS using `kexec`. -1. Bootstrap Talos to run a Kubernetes cluster. -1. Get a kubeconfig, check cluster status, and prepare to install Cozystack. +1. Install Talos Linux on your nodes or start it from another OS using `kexec`. +2. Bootstrap Talos to run a Kubernetes cluster. +3. Get a kubeconfig, check cluster status, and prepare to install Cozystack.content/en/docs/getting-started/requirements.md (2)
8-19: Avoid<br>inside listsLine breaks inside list items are better handled with blank lines or sub-bullets; raw
<br>hampers portability to other renderers.Example refactor:
- - HDD1: 32GiB<br>Primary disk, used for Talos Linux, etcd storage, and downloaded images. - - HDD2: 100GiB<br>Secondary disk, used for user application data. + - HDD1: 32 GiB + Primary disk, used for Talos Linux, etcd storage, and downloaded images. + - HDD2: 100 GiB + Secondary disk, used for user application data.
31-33: Clarify preferred vs. requiredCurrently reads “Using
kexecis a simple way … optimal for this tutorial.”
Consider explicitly stating it is optional, as some users may not have an existing Linux install.Minor wording tweak:
-Using `kexec` is a simple way to boot Talos Linux, optimal for this tutorial. +Using `kexec` is the simplest path for this tutorial, but any supported installation method will work.content/en/docs/talos/install/kexec.md (2)
98-101: Safety reminder: confirm--execstepRunning
kexec --execwill instantly drop the current kernel without clean shutdown. A short cautionary note (e.g., “make sure all important data is saved”) would help prevent accidents.
125-132: Missing links to bootstrap guides
available tools:implies links, but none follow in this paragraph. Consider mirroring the bullet list used in deploy-cluster.md for consistency.
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro
📒 Files selected for processing (5)
content/en/docs/getting-started/deploy-cluster.md(1 hunks)content/en/docs/getting-started/requirements.md(2 hunks)content/en/docs/talos/install/iso.md(1 hunks)content/en/docs/talos/install/kexec.md(1 hunks)content/en/docs/talos/install/pxe.md(1 hunks)
🧰 Additional context used
🧠 Learnings (3)
content/en/docs/talos/install/iso.md (1)
Learnt from: nbykov0
PR: #165
File: content/en/docs/getting-started/first-deployment.md:475-476
Timestamp: 2025-04-21T19:21:40.546Z
Learning: In the Cozystack documentation, bold text like "OIDC" before a final note is used as a label/callout rather than a formal section heading, which typically use markdown heading syntax (## or ###).
content/en/docs/getting-started/requirements.md (1)
Learnt from: lb0o
PR: #178
File: content/en/docs/getting-started/first-deployment.md:58-62
Timestamp: 2025-04-25T13:11:41.282Z
Learning: The talos-bootstrap tool doesn't have usable releases at the moment, so it needs to be fetched directly from the master branch using curl.
content/en/docs/getting-started/deploy-cluster.md (1)
Learnt from: lb0o
PR: #178
File: content/en/docs/getting-started/first-deployment.md:58-62
Timestamp: 2025-04-25T13:11:41.282Z
Learning: The talos-bootstrap tool doesn't have usable releases at the moment, so it needs to be fetched directly from the master branch using curl.
🪛 LanguageTool
content/en/docs/talos/install/kexec.md
[style] ~87-~87: Consider a different adjective to strengthen your wording.
Context: ...ceed to the next step. For details and deep explanation of this step, see the docum...
(DEEP_PROFOUND)
content/en/docs/getting-started/deploy-cluster.md
[uncategorized] ~12-~12: If this is a compound adjective that modifies the following noun, use a hyphen.
Context: ...u begin Make sure that you have nodes (bare metal servers or VMs) that fit the [hardware ...
(EN_COMPOUND_ADJECTIVE_INTERNAL)
🔇 Additional comments (5)
content/en/docs/talos/install/iso.md (1)
3-3: Metadata change looks good
linkTitlenow matches the pattern used across the other install docs (ISO Installation). No further action required.content/en/docs/talos/install/pxe.md (1)
3-3: Consistent casing for link titlesThe move to sentence-case (
PXE installation) aligns with the new convention introduced in this PR. ✅content/en/docs/getting-started/deploy-cluster.md (2)
17-25: Update the front-matter description for consistencyThe front-matter
description(line 4) still says “on a set of virtual machines,” which conflicts with the newly generalised wording here (nodes / bare-metal). Recommend adjusting the description to stay in sync.
39-41: Minor ordering suggestionListing the declarative tool (Talm) first is sensible. If you intend “native first” instead, swap talosctl and Talm.
Purely cosmetic—no action required unless you have a preference.
content/en/docs/talos/install/kexec.md (1)
68-77: Shell snippet: netmask calculation may fail on BusyBox/mawkThe bitwise exponent operator
2^(8-p)works only with GNU awk. On distros withmawkthe expression returns literal text.Suggest pre-calculating via
ipcalc(present on most distros) or a pure-bash approach.Example replacement:
NETMASK=$(ipcalc -m "$IP/$CIDR" | cut -d= -f2)
Signed-off-by: Nick Volynkin <nick.volynkin@gmail.com>
c09ca87 to
337e5c3
Compare
There was a problem hiding this comment.
Actionable comments posted: 0
🧹 Nitpick comments (7)
content/en/docs/getting-started/deploy-cluster.md (3)
12-13: Hyphenate the compound adjective “bare-metal”.Minor grammar nit: for compound adjectives that precede a noun, a hyphen is preferred (“bare-metal servers”).
17-18: Replace “On this step” with “In this step”.“In this step” is the more common idiom for process documentation.
-On this step of the tutorial you will bootstrap +In this step of the tutorial you will bootstrap
31-34: Clarify that the list is ordered by increasing complexity.Readers may wonder why “kexec” is listed first. A short phrase such as “(quickest) / (most automated)” would make the ordering intention explicit.
content/en/docs/talos/install/kexec.md (4)
49-50: Tense consistency – use present perfect with “since”.“Cozystack has supported
kexecinstallation since version v0.29.2.”-Cozystack supports `kexec` installation since version `v0.29.2` +Cozystack has supported `kexec` installation since version `v0.29.2`.
56-60: Hyphenate “kernel-level IP configuration”.This term reads more naturally with a hyphen.
-"Kernel level IP configuration". +"kernel-level IP configuration".
64-71: Simplify netmask derivation to reduce awk complexity.The current one-liner for converting CIDR to dotted netmask is hard to maintain. Using
ipcalc(available in most distros) is clearer:-NETMASK=$(echo "$CIDR" | awk '{p=$1;for(i=1;i<=4;i++){if(p>=8){o=255;p-=8}else{o=256-2^(8-p);p=0}printf(i<4?o".":o"\n")}}') +NETMASK=$(ipcalc -b 0.0.0.0/"$CIDR" | awk -F= '/NETMASK/{print $2}')Falls back gracefully and is self-documenting.
95-98: Remind users that bothkexeccommands must be run as root.Running
kexec --load/--execwithout sufficient privileges silently fails on many systems. A short note (“run the following as root”) will save users troubleshooting time.
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro
📒 Files selected for processing (5)
content/en/docs/getting-started/deploy-cluster.md(1 hunks)content/en/docs/getting-started/requirements.md(2 hunks)content/en/docs/talos/install/iso.md(1 hunks)content/en/docs/talos/install/kexec.md(1 hunks)content/en/docs/talos/install/pxe.md(1 hunks)
✅ Files skipped from review due to trivial changes (2)
- content/en/docs/talos/install/pxe.md
- content/en/docs/talos/install/iso.md
🚧 Files skipped from review as they are similar to previous changes (1)
- content/en/docs/getting-started/requirements.md
🧰 Additional context used
🧠 Learnings (1)
content/en/docs/getting-started/deploy-cluster.md (1)
Learnt from: lb0o
PR: #178
File: content/en/docs/getting-started/first-deployment.md:58-62
Timestamp: 2025-04-25T13:11:41.282Z
Learning: The talos-bootstrap tool doesn't have usable releases at the moment, so it needs to be fetched directly from the master branch using curl.
🪛 LanguageTool
content/en/docs/getting-started/deploy-cluster.md
[uncategorized] ~12-~12: If this is a compound adjective that modifies the following noun, use a hyphen.
Context: ...u begin Make sure that you have nodes (bare metal servers or VMs) that fit the [hardware ...
(EN_COMPOUND_ADJECTIVE_INTERNAL)
content/en/docs/talos/install/kexec.md
[style] ~84-~84: Consider a different adjective to strengthen your wording.
Context: ...ceed to the next step. For details and deep explanation of this step, see the docum...
(DEEP_PROFOUND)
Summary by CodeRabbit
New Features
Documentation