Gatsby build unable to create a sitemap.xml file on build with gatsby-plugin-sitemap

[Aarya-Patel]

Description

I want to create a sitemap.xml file for my build, however the file doesn't get created. When I serve my build and go to /sitemap.xml , I am met with a 404 page instead of the sitemap.xml file. After building, under /public folder I see a sitemap folder with sitemap-0.xml and sitemap-index.xml files. I can also access these files under the localhost:9000/sitemap/sitemap-0.xml and localhost:9000/sitemap/sitemap-index.xml paths on build. Not sure why these files are there or if they are new replacements.

Steps to reproduce

Minimal Reproduction: https://github.com/Aarya-Patel/gatsby-reproduction
Steps to reproduce:

1. Run npm install --legacy-peer-deps
2. Run gatsby build && gatsby serve
3. Go to localhost:9000/sitemap.xml

Expected result

I should see the entire site's sitemap.xml

Actual result

I see a 404 page instead.

Environment

System:
OS: macOS 11.0.1
CPU: (8) x64 Intel(R) Core(TM) i7-8569U CPU @ 2.80GHz
Shell: 3.2.57 - /bin/bash
Binaries:
Node: 15.0.0 - ~/.nvm/versions/node/v15.0.0/bin/node
npm: 7.0.2 - ~/.nvm/versions/node/v15.0.0/bin/npm
Languages:
Python: 2.7.16 - /usr/bin/python
Browsers:
Chrome: 91.0.4472.77
Safari: 14.0.1
npmPackages:
gatsby: ^3.6.2 => 3.6.2
gatsby-core-utils: ^2.6.0 => 2.6.0
gatsby-plugin-gatsby-cloud: ^2.6.1 => 2.6.1
gatsby-plugin-image: ^1.6.0 => 1.6.0
gatsby-plugin-manifest: ^3.6.0 => 3.6.0
gatsby-plugin-offline: ^4.6.0 => 4.6.0
gatsby-plugin-react-helmet: ^4.6.0 => 4.6.0
gatsby-plugin-sharp: ^3.6.0 => 3.6.0
gatsby-plugin-sitemap: ^4.2.0 => 4.2.0
gatsby-remark-autolink-headers: ^4.3.0 => 4.3.0
gatsby-source-filesystem: ^3.6.0 => 3.6.0
gatsby-transformer-remark: ^4.3.0 => 4.3.0
gatsby-transformer-sharp: ^3.6.0 => 3.6.0
npmGlobalPackages:
gatsby-cli: 3.6.0

[etc-tiago]

The sitemaps are generated properly when the gatsby build command is executed?

[Aarya-Patel]

No it is not.

[fbuireu]

Same issue as #31515.

[LekoArts]

The plugin is working as intended and correctly. Point Google to sitemap/sitemap-index.xml and it'll work.

[ariadne-github]

@LekoArts right now it does not seem so. The documentation says under options that it would generate multiple sitemaps and an index only when the entries are more then 45000 or the configured entryLimit. But looking at the code it seems to always incorrectly call simpleSitemapAndIndex from the underlying sitemap library. That library documentation specifies that it should be used when there are many entries and you want to generate an index.

[LekoArts]

The docs are slightly incorrect: #31282

[jodiedoubleday]

So with the basic Sitemap setup in gatsby-config, it used to auto-generate a sitemap.xml at my websites route.

Something seems to have changed recently and this has now stopped working, is there something I now need to add to my config to generate www.my-website.com/sitemap.xml or do I to have to change everything to look at www.my-website.com/sitemap/sitemap-index.xml ?