subgraphs > Developing > Deploying > Deploying a Subgraph to Multiple Networks

Deploying a Subgraph to Multiple Networks

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This page explains how to deploy a subgraph to multiple networks. To deploy a subgraph you need to first install the Graph CLI. If you have not created a subgraph already, see Creating a subgraph.

将子图部署到多个网络

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在某些情况下，您需要将相同的子图部署到多个网络，而不复制其所有代码。随之而来的主要挑战是这些网络上的合约地址不同。

Using `graph-cli`

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Both graph build (since v0.29.0) and graph deploy (since v0.32.0) accept two new options:

Options:

      ...
      --network <name>          Network configuration to use from the networks config file
      --network-file <path>     Networks config file path (default: "./networks.json")

You can use the --network option to specify a network configuration from a json standard file (defaults to networks.json) to easily update your subgraph during development.

Note: The init command will now auto-generate a networks.json based on the provided information. You will then be able to update existing or add additional networks.

If you don't have a networks.json file, you'll need to manually create one with the following structure:

{
    "network1": { // the network name
        "dataSource1": { // the dataSource name
            "address": "0xabc...", // the contract address (optional)
            "startBlock": 123456 // the startBlock (optional)
        },
        "dataSource2": {
            "address": "0x123...",
            "startBlock": 123444
        }
    },
    "network2": {
        "dataSource1": {
            "address": "0x987...",
            "startBlock": 123
        },
        "dataSource2": {
            "address": "0xxyz..",
            "startBlock": 456
        }
    },
    ...
}

Note: You don't have to specify any of the templates (if you have any) in the config file, only the dataSources. If there are any templates declared in the subgraph.yaml file, their network will be automatically updated to the one specified with the --network option.

Now, let's assume you want to be able to deploy your subgraph to the mainnet and sepolia networks, and this is your subgraph.yaml:

# ...
dataSources:
  - kind: ethereum/contract
    name: Gravity
    network: mainnet
    source:
      address: '0x123...'
      abi: Gravity
    mapping:
      kind: ethereum/events

您的网络配置文件应该是这样的:

{
  "mainnet": {
    "Gravity": {
      "address": "0x123..."
    }
  },
  "sepolia": {
    "Gravity": {
      "address": "0xabc..."
    }
  }
}

现在我们可以运行以下命令之一:

# Using default networks.json file
yarn build --network sepolia

# Using custom named file
yarn build --network sepolia --network-file path/to/config

The build command will update your subgraph.yaml with the sepolia configuration and then re-compile the subgraph. Your subgraph.yaml file now should look like this:

# ...
dataSources:
  - kind: ethereum/contract
    name: Gravity
    network: sepolia
    source:
      address: '0xabc...'
      abi: Gravity
    mapping:
      kind: ethereum/events

Now you are ready to yarn deploy.

Note: As mentioned earlier, since graph-cli 0.32.0 you can directly run yarn deploy with the --network option:

# Using default networks.json file
yarn deploy --network sepolia

# Using custom named file
yarn deploy --network sepolia --network-file path/to/config

使用 subgraph.yaml 模板

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One way to parameterize aspects like contract addresses using older graph-cli versions is to generate parts of it with a templating system like Mustache or Handlebars.

To illustrate this approach, let's assume a subgraph should be deployed to mainnet and Sepolia using different contract addresses. You could then define two config files providing the addresses for each network:

{
  "network": "mainnet",
  "address": "0x123..."
}

和

{
  "network": "sepolia",
  "address": "0xabc..."
}

Along with that, you would substitute the network name and addresses in the manifest with variable placeholders {{network}} and {{address}} and rename the manifest to e.g. subgraph.template.yaml:

# ...
dataSources:
  - kind: ethereum/contract
    name: Gravity
    network: mainnet
    network: {{network}}
    source:
      address: '0x2E645469f354BB4F5c8a05B3b30A929361cf77eC'
      address: '{{address}}'
      abi: Gravity
    mapping:
      kind: ethereum/events

In order to generate a manifest to either network, you could add two additional commands to package.json along with a dependency on mustache:

{
  ...
  "scripts": {
    ...
    "prepare:mainnet": "mustache config/mainnet.json subgraph.template.yaml > subgraph.yaml",
    "prepare:sepolia": "mustache config/sepolia.json subgraph.template.yaml > subgraph.yaml"
  },
  "devDependencies": {
    ...
    "mustache": "^3.1.0"
  }
}

To deploy this subgraph for mainnet or Sepolia you would now simply run one of the two following commands:

# Mainnet:
yarn prepare:mainnet && yarn deploy

# Sepolia:
yarn prepare:sepolia && yarn deploy

A working example of this can be found here.

Note: This approach can also be applied to more complex situations, where it is necessary to substitute more than contract addresses and network names or where generating mappings or ABIs from templates as well.

This will give you the chainHeadBlock which you can compare with the latestBlock on your subgraph to check if it is running behind. synced informs if the subgraph has ever caught up to the chain. health can currently take the values of healthy if no errors occurred, or failed if there was an error which halted the progress of the subgraph. In this case, you can check the fatalError field for details on this error.

子图工作室子图封存策略

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A subgraph version in Studio is archived if and only if it meets the following criteria:

The version is not published to the network (or pending publish)
The version was created 45 or more days ago
The subgraph hasn't been queried in 30 days

In addition, when a new version is deployed, if the subgraph has not been published, then the N-2 version of the subgraph is archived.

受此策略影响的每个子图都有一个选项，可以回复有问题的版本。

检查子图状态

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如果子图成功同步，这是一个好信号，表明它将永远运行良好。然而，网络上的新触发器可能会导致子图遇到未经测试的错误条件，或者由于性能问题或节点操作符的问题，子图开始落后。

Graph Node exposes a GraphQL endpoint which you can query to check the status of your subgraph. On the hosted service, it is available at https://api.thegraph.com/index-node/graphql. On a local node, it is available on port 8030/graphql by default. The full schema for this endpoint can be found here. Here is an example query that checks the status of the current version of a subgraph:

{
  indexingStatusForCurrentVersion(subgraphName: "org/subgraph") {
    synced
    health
    fatalError {
      message
      block {
        number
        hash
      }
      handler
    }
    chains {
      chainHeadBlock {
        number
      }
      latestBlock {
        number
      }
    }
  }
}