<p>The hydra.iohk.io site went through unexpected retirement (and may not be restored). But the release notes for 1.35.4 already have updated links for binary download (which points to update-cardano-mainnet.iohk.io) and configs (which points to <a href="https://book.world.dev.cardano.org/environments.html" rel="nofollow noreferrer">https://book.world.dev.cardano.org/environments.html</a>).</p>
<p>Also, the config files you download from that site are available on github <a href="https://github.com/input-output-hk/cardano-world/tree/master/docs/environments" rel="nofollow noreferrer">here</a></p>

CC BY-SA 4.0
2022-12-05T21:32:54.680Z
Well, the `cardano-world` repo doesn’t have tags, but I assume that the `1.35.4-node-bump` branch might do.  In retrospect, the reason why my vigorous GitHub searches found nothing was … the renaming of `mainnet-config.json` to `config.json`. That’s a level of encryption that my brain just could not penetrate.
Andrej Podzimek
CC BY-SA 4.0
2022-12-05T21:10:11.917Z
2022-12-05T21:10:11.917Z
RdLrT
<p>Where does one get the basic <code>.*-config.json</code>, <code>.*-topology.json</code> and <code>.*-genesis.json</code> files for package building nowadays? The URLs that always worked for me seem down, e.g.:</p>
<p><a href="https://hydra.iohk.io/job/Cardano/cardano-node/cardano-deployment/latest-finished/download/1/mainnet-config.json" rel="nofollow noreferrer">https://hydra.iohk.io/job/Cardano/cardano-node/cardano-deployment/latest-finished/download/1/mainnet-config.json</a></p>
<p>This makes it quite hard to rebuild <a href="https://aur.archlinux.org/packages/cardano-node" rel="nofollow noreferrer">this package</a> that <a href="https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=cardano-node#n27" rel="nofollow noreferrer">depends on the configs</a>. Somewhere on the interwebs they <a href="https://discourse.nixos.org/t/i-seem-to-be-stuck-because-a-binary-cache-is-down/23641/4" rel="nofollow noreferrer">mention</a> a switch from <code>hydra.iohk.io</code> to <code>cache.iog.io</code>, but nope, that doesn’t work either. (Or perhaps the URL structure is completely different.)</p>
<p>I could probably just reuse the files from <code>1.35.3</code> for <code>1.35.4</code>, but (sort of) dislike the idea; I like to keep things clean &amp; correct &amp; buildable long-term.</p>
<p>So what’s the issue here? Is it just temporary downtime? Has there been a change in the config file provisioning? Or have the config files themselves been replaced? (If so, is there a migration guide?) Looking at <a href="https://github.com/input-output-hk/cardano-node/releases/tag/1.35.4" rel="nofollow noreferrer">the <code>1.35.4</code> release notes</a>, I can’t spot any news concerning the <code>.json</code> files.</p>

<testnet><mainnet><topology><json>
Is hydra.iohk.io just down or has there been a change in .json configs’ provisioning?
# Is hydra.iohk.io just down or has there been a change in .json configs’ provisioning?

(Asked by: username_0 on 2022-12-05)

Where does one get the basic `.*-config.json`, `.*-topology.json` and `.*-genesis.json` files for package building nowadays? The URLs that always worked for me seem down, e.g.:

<https://hydra.iohk.io/job/Cardano/cardano-node/cardano-deployment/latest-finished/download/1/mainnet-config.json>

This makes it quite hard to rebuild [this package](https://aur.archlinux.org/packages/cardano-node) that [depends on the configs](https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=cardano-node#n27). Somewhere on the interwebs they [mention](https://discourse.nixos.org/t/i-seem-to-be-stuck-because-a-binary-cache-is-down/23641/4) a switch from `hydra.iohk.io` to `cache.iog.io`, but nope, that doesn’t work either. (Or perhaps the URL structure is completely different.)

I could probably just reuse the files from `1.35.3` for `1.35.4`, but (sort of) dislike the idea; I like to keep things clean & correct & buildable long-term.

So what’s the issue here? Is it just temporary downtime? Has there been a change in the config file provisioning? Or have the config files themselves been replaced? (If so, is there a migration guide?) Looking at [the `1.35.4` release notes](https://github.com/input-output-hk/cardano-node/releases/tag/1.35.4), I can’t spot any news concerning the `.json` files.

**Tags:** testnet, mainnet, topology, json

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## 1 answers

### Answer by username_1 on 2022-12-05. Score: 2 | Accepted answer

The hydra.iohk.io site went through unexpected retirement (and may not be restored). But the release notes for 1.35.4 already have updated links for binary download (which points to update-cardano-mainnet.iohk.io) and configs (which points to <https://book.world.dev.cardano.org/environments.html>).

Also, the config files you download from that site are available on github [here](https://github.com/input-output-hk/cardano-world/tree/master/docs/environments)

> **Comments:**
> **username_0**: Well, the `cardano-world` repo doesn’t have tags, but I assume that the `1.35.4-node-bump` branch might do.  In retrospect, the reason why my vigorous GitHub searches found nothing was … the renaming of `mainnet-config.json` to `config.json`. That’s a level of encryption that my brain just could not penetrate.  

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