# Running Nodes

This section explains how to build, run, and maintain Cronos nodes across Mainnet, Testnet, and Devnet. It covers key areas such as compiling `cronosd`, configuring validators and full nodes, managing upgrades, and optimizing synchronization with tools like snapshots, local state sync, VersionDB and MemlAVL. The aim is to provide node operators with clear guidance to keep their infrastructure stable and efficient.

Whether you’re launching a validator, hosting infrastructure, or contributing to the network, this page walks you through everything from initial setup to advanced optimizations.

{% content-ref url="running-nodes/cronos-mainnet" %}
[cronos-mainnet](https://docs.cronos.org/for-node-hosts/running-nodes/cronos-mainnet)
{% endcontent-ref %}

{% content-ref url="running-nodes/cronos-testnet" %}
[cronos-testnet](https://docs.cronos.org/for-node-hosts/running-nodes/cronos-testnet)
{% endcontent-ref %}

{% content-ref url="running-nodes/cronos-evm-snapshots" %}
[cronos-evm-snapshots](https://docs.cronos.org/for-node-hosts/running-nodes/cronos-evm-snapshots)
{% endcontent-ref %}

{% content-ref url="running-nodes/local-devnet" %}
[local-devnet](https://docs.cronos.org/for-node-hosts/running-nodes/local-devnet)
{% endcontent-ref %}

{% content-ref url="running-nodes/local-state-sync" %}
[local-state-sync](https://docs.cronos.org/for-node-hosts/running-nodes/local-state-sync)
{% endcontent-ref %}

{% content-ref url="running-nodes/cronosd-build-with-nix" %}
[cronosd-build-with-nix](https://docs.cronos.org/for-node-hosts/running-nodes/cronosd-build-with-nix)
{% endcontent-ref %}

{% content-ref url="running-nodes/versiondb" %}
[versiondb](https://docs.cronos.org/for-node-hosts/running-nodes/versiondb)
{% endcontent-ref %}

{% content-ref url="running-nodes/memiavl" %}
[memiavl](https://docs.cronos.org/for-node-hosts/running-nodes/memiavl)
{% endcontent-ref %}

{% content-ref url="running-nodes/cronos-node-best-practises" %}
[cronos-node-best-practises](https://docs.cronos.org/for-node-hosts/running-nodes/cronos-node-best-practises)
{% endcontent-ref %}


---

# Agent Instructions: Querying This Documentation

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Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.cronos.org/for-node-hosts/running-nodes.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.