Version: Current

Run a private Mithril network

info

In this guide, you will learn how to run a demonstration of a Mithril network working on top of a private Cardano devnet network. This network is completely autonomous and set up to produce Mithril snapshots every minute.

You can launch a private Mithril network using the following topology:

2 Cardano nodes configured as stake pool operators (SPOs) with a Mithril signer on top
1 Cardano node configured as a BFT node with a Mithril aggregator on top

Devnet Topology

danger

This demonstration works exclusively on Linux machines.

tip

More information about the private Cardano/Mithril devnet is available here.

Video demonstration

Pre-requisites

Install the latest stable version of a correctly configured Rust toolchain.
Install the OpenSSL development libraries. For example, on Ubuntu/Debian/Mint, run apt install libssl-dev.

Download the source file

Download the source file from GitHub (HTTPS):

git clone https://github.com/input-output-hk/mithril.git

Or (SSH):

git clone git@github.com:input-output-hk/mithril.git

Change the directory

To change the directory, go to the devnet folder:

cd mithril-test-lab/mithril-devnet

Run a private Mithril/Cardano network (`devnet`) locally

Step 1: Launch the devnet

Open a terminal window. Run a devnet with one BTF and two SPO Cardano nodes.

Option 1: Use remote Docker images

The network setup will be quicker when using remote Docker images:

MITHRIL_IMAGE_ID=latest NUM_BFT_NODES=1 NUM_POOL_NODES=2 ./devnet-run.sh

Option 2: Use local Docker images

Note that using local Docker images to build Mithril nodes may take more time:

NUM_BFT_NODES=1 NUM_POOL_NODES=2 ./devnet-run.sh

info

Throughout the devnet launch process, you will encounter the following steps:

Bootstrapping the devnet: generate the artifacts of the devnet, depending on the configuration parameters (cryptographic keys, network topology, transactions to set up pool nodes, etc)
Starting the Cardano network: run the nodes of the Cardano network, wait for it to be ready, and activate the pool nodes.
Starting the Mithril network: run the nodes of the Mithril network, which will work on top of the Cardano network.

You should see the following information displayed:

=====================================================================
 Bootstrap Mithril/Cardano devnet
=====================================================================

>> Directory: artifacts
>> Cardano BFT nodes: 1
>> Cardano SPO nodes: 2
>> Info: Mithril aggregator will be attached to the first Cardano BFT node
>> Info: Mithril signers will be attached to each Cardano SPO node

=====================================================================
 Start Cardano nodes
=====================================================================

>> Start Cardano network
cardano-node: no process found
>> Starting Cardano node 'node-bft1'
>> Starting Cardano node 'node-pool1'
>> Starting Cardano node 'node-pool2'
>> Wait for Cardano network to be ready
>>>> Not ready yet
>>>> Not ready yet
>>>> Not ready yet
>>>> Not ready yet
>>>> Not ready yet
>>>> Not ready yet
>>>> Not ready yet
>>>> Not ready yet
>>>> Not ready yet
>>>> Not ready yet
>>>> Not ready yet
>>>> Not ready yet
>>>> Ready!
>> Activate Cardano pools
Estimated transaction fee: Lovelace 843
Transaction successfully submitted.
Estimated transaction fee: Lovelace 843
Transaction successfully submitted.
>> Wait for Cardano pools to be activated
>>>> Not activated yet
>>>> Not activated yet
>>>> Not activated yet
>>>> Not activated yet
>>>> Not activated yet
>>>> Not activated yet
>>>> Not activated yet
>>>> Not activated yet
>>>> Not activated yet
>>>> Not activated yet
>>>> Activated!
>>>> Found PoolId: pool1v55rfy864kslz86u45w4juahtuqr7cy282rffdnpc9exjlguvys
>>>> Found PoolId: pool1c56jqj5qsala8c24829sxqp0fcrtrrtcmezgrs6w60hl2nwsvav

=====================================================================
 Start Mithril nodes
=====================================================================

>> Start Mithril network
>> Build Mithril node Docker images
>>>> Building Mithril aggregator node Docker image
>>>> Building Mithril client node Docker image
>>>> Building Mithril signer node Docker image
No stopped containers
Creating network "artifacts_cardano_network" with driver "bridge"
Creating network "artifacts_mithril_network" with driver "bridge"
Creating artifacts_mithril-aggregator_1        ... done
Creating artifacts_mithril-signer-node-pool1_1 ... done
Creating artifacts_mithril-signer-node-pool2_1 ... done
Creating artifacts_mithril-aggregator-genesis_run ... done
{"msg":"Started","v":0,"name":"slog-rs","level":20,"time":"2022-09-06T09:24:31.925641527Z","hostname":"e932dff845aa","pid":1,"config":"Configuration { cardano_cli_path: \"/app/bin/cardano-cli\", cardano_node_socket_path: \"/data/ipc/node.sock\", network_magic: Some(42), network: \"devnet\", protocol_parameters: ProtocolParameters { k: 5, m: 100, phi_f: 0.65 }, snapshot_store_type: Local, snapshot_uploader_type: Local, server_url: \"http://0.0.0.0:8080/\", run_interval: 1000, db_directory: \"/data/db\", snapshot_directory: \"/data/mithril/aggregator\", data_stores_directory: \"/data/mithril/aggregator/stores\", genesis_verification_key: \"5b33322c3235332c3138362c3230312c3137372c31312c3131372c3133352c3138372c3136372c3138312c3138382c32322c35392c3230362c3130352c3233312c3135302c3231352c33302c37382c3231322c37362c31362c3235322c3138302c37322c3133342c3133372c3234372c3136312c36385d\" }","run_mode":"dev"}
{"msg":"New LocalSnapshotUploader created","v":0,"name":"slog-rs","level":20Genesis bootstrap for test only
,"time":"2022-09-06T09:24:31.925683285Z","hostname":"e932dff845aa","pid":1,"snapshot_server_url":"http://0.0.0.0:8080/"}
{"msg":"New MultiSignerImpl created","v":0,"name":"slog-rs","level":20,"time":"2022-09-06T09:24:31.925711468Z","hostname":"e932dff845aa","pid":1}
{"msg":"New MithrilCertificateVerifier created","v":0,"name":"slog-rs","level":20,"time":"2022-09-06T09:24:31.925736796Z","hostname":"e932dff845aa","pid":1}
{"msg":"Update current_beacon to Beacon { network: \"devnet\", epoch: Epoch(10), immutable_file_number: 47 }","v":0,"name":"slog-rs","level":20,"time":"2022-09-06T09:24:31.938337155Z","hostname":"e932dff845aa","pid":1}
{"msg":"Get next signers with stake","v":0,"name":"slog-rs","level":20,"time":"2022-09-06T09:24:31.938384324Z","hostname":"e932dff845aa","pid":1}
{"msg":"Get next stake distribution","v":0,"name":"slog-rs","level":20,"time":"2022-09-06T09:24:31.938422585Z","hostname":"e932dff845aa","pid":1}
{"msg":"Get stake distribution with epoch offset","v":0,"name":"slog-rs","level":20,"time":"2022-09-06T09:24:31.938459565Z","hostname":"e932dff845aa","pid":1,"epoch_offset":0}
{"msg":"Get next protocol parameters","v":0,"name":"slog-rs","level":20,"time":"2022-09-06T09:24:31.938500461Z","hostname":"e932dff845aa","pid":1}
{"msg":"Get protocol parameters with epoch offset","v":0,"name":"slog-rs","level":20,"time":"2022-09-06T09:24:31.938535367Z","hostname":"e932dff845aa","pid":1,"epoch_offset":0}
{"msg":"Create clerk","v":0,"name":"slog-rs","level":20,"time":"2022-09-06T09:24:31.93856896Z","hostname":"e932dff845aa","pid":1}
Verify genesis certificate #86a4c56d957636740a75c250fdd9d3b9a9f1539dc93449b1f80fcab49e279d6d @ epoch #10

=====================================================================
 Schedule Cardano stake delegation
=====================================================================

>> Begin scheduled delegation
>> 11:24:32: Wait 180s until next delegation round...
>> Run delegation round #1!
>>>> Current Epoch: 12
Estimated transaction fee: Lovelace 436
Transaction successfully submitted.
Estimated transaction fee: Lovelace 436
Transaction successfully submitted.
>> 11:27:32: Wait 180s until next delegation round...
>> Run delegation round #2!
>>>> Current Epoch: 14
Estimated transaction fee: Lovelace 436
Transaction successfully submitted.
Estimated transaction fee: Lovelace 436
Transaction successfully submitted.
>> 11:30:32: Wait 180s until next delegation round...

Step 2: Query the devnet

Open a second terminal window. Watch the state queried from the devnet:

watch -n 1 ./devnet-query.sh

The networks will be queried every second and will display:

Certificate production information gathered from the Mithril network
UTXO, stake pools, and stake distribution from the Cardano network

=====================================================================
 Query Mithril/Cardano devnet
=====================================================================

=====================================================================
=== Mithril network
=====================================================================

>> Query pending certificate
{
  "beacon": {
    "network": "devnet",
    "epoch": 2,
    "immutable_file_number": 6
  },
  "protocol": {
    "k": 5,
    "m": 100,
    "phi_f": 0.65
  },
  "signers": []
}

>> Query snapshots
[
  {
    "digest": "224b77ad9cbe7fc81e6808940d391b299c27e77d9978641025f382e2e5ddd2ac",
    "certificate_hash": "5b29543c4af0f369d40e1da53451ebd8a39c4263df1585eb072f54511c1e3333",
    "size": 7986,
    "created_at": "2022-07-05T11:26:55.855498395Z",
    "locations": [
      "http://0.0.0.0:8080/aggregator/snapshot/224b77ad9cbe7fc81e6808940d391b299c27e77d9978641025f382e2e5ddd2ac/download"
    ]
  },
  {
    "digest": "1a39f57c906133421ab7b5c782762b6abff4771b5e9158a977e58db1edc26bd0",
    "certificate_hash": "be758b84a4b495e82af48747356946efb509ccbc4b44a9c985e3cb3099e35c94",
    "size": 6743,
    "created_at": "2022-07-05T11:26:35.658661878Z",
    "locations": [
      "http://0.0.0.0:8080/aggregator/snapshot/1a39f57c906133421ab7b5c782762b6abff4771b5e9158a977e58db1edc26bd0/download"
    ]
  },
  {
    "digest": "fd1a39d28998ba18c96547f62d308c57612ed348be058f615c14db5228a947c1",
    "certificate_hash": "4254a6176afbe17967ad1671e4619e9a3f3412115a63dd0eb0f5e8b64094128a",
    "size": 6199,
    "created_at": "2022-07-05T11:26:20.470029035Z",
    "locations": [
      "http://0.0.0.0:8080/aggregator/snapshot/fd1a39d28998ba18c96547f62d308c57612ed348be058f615c14db5228a947c1/download"
    ]
  }
]

=====================================================================
=== Cardano network
=====================================================================

>> Query chain tip
{
    "era": "Alonzo",
    "syncProgress": "100.00",
    "hash": "075fc8366d353b45debedfc6faa92148c8fad584d81dbb4ea7b8b4d121489452",
    "epoch": 2,
    "slot": 219,
    "block": 9
}

>> Query the whole UTXO
                           TxHash                                 TxIx        Amount
--------------------------------------------------------------------------------------
4980fb7c90bc003f6af65778008732cd1b1a8c0873b7d622bfb7442f1312c9b5     0        447999157 lovelace + TxOutDatumNone
4980fb7c90bc003f6af65778008732cd1b1a8c0873b7d622bfb7442f1312c9b5     1        2000000 lovelace + TxOutDatumNone
c31e535531c9eb32bdd8f05e25204186333262674d24c6a770b6b120f020d9a9     0        448999157 lovelace + TxOutDatumNone
c31e535531c9eb32bdd8f05e25204186333262674d24c6a770b6b120f020d9a9     1        1000000 lovelace + TxOutDatumNone
ed265b672873192ea1e9c19092e8f41947c28977438bcff580312de37cfbd46c     0        1002000000 lovelace + TxOutDatumNone

>> Query stake pools
pool1v55rfy864kslz86u45w4juahtuqr7cy282rffdnpc9exjlguvys
pool1c56jqj5qsala8c24829sxqp0fcrtrrtcmezgrs6w60hl2nwsvav

>> Query stake distribution
                           PoolId                                 Stake frac
------------------------------------------------------------------------------
pool1v55rfy864kslz86u45w4juahtuqr7cy282rffdnpc9exjlguvys   1.052e-3
pool1c56jqj5qsala8c24829sxqp0fcrtrrtcmezgrs6w60hl2nwsvav   5.258e-4

Step 3: Observe the devnet

Open a third terminal window. Watch the logs of each devnet node:

watch -n 1 LINES=5 ./devnet-log.sh

The nodes will be queried every second and will display thus:

=====================================================================
 Logs Mithril/Cardano devnet
=====================================================================

=====================================================================
--  docker compose logs --tail=5
=====================================================================
Attaching to artifacts_mithril-signer-node-pool1_1, artifacts_mithril-signer-node-pool2_1, artifacts_mithril-aggregator_1
mithril-aggregator_1         | {"msg":"Epoch computation is not final and needs to be fixed: 4","v":0,"name":"slog-rs","level":40,"time":"2022-07-05T11:29:32.726760492Z","hostname":"ba17593540ac","pid":1}
mithril-aggregator_1         | {"msg":"Get signer pool1c56jqj5qsala8c24829sxqp0fcrtrrtcmezgrs6w60hl2nwsvav","v":0,"name":"slog-rs","level":20,"time":"2022-07-05T11:29:32.72678048Z","hostname":"ba17593540ac","pid":1}
mithril-aggregator_1         | {"msg":"Epoch computation is not final and needs to be fixed: 4","v":0,"name":"slog-rs","level":40,"time":"2022-07-05T11:29:32.72679661Z","hostname":"ba17593540ac","pid":1}
mithril-aggregator_1         | {"msg":"Get signer pool1v55rfy864kslz86u45w4juahtuqr7cy282rffdnpc9exjlguvys","v":0,"name":"slog-rs","level":20,"time":"2022-07-05T11:29:32.734529107Z","hostname":"ba17593540ac","pid":1}
mithril-aggregator_1         | {"msg":"Epoch computation is not final and needs to be fixed: 4","v":0,"name":"slog-rs","level":40,"time":"2022-07-05T11:29:32.734553714Z","hostname":"ba17593540ac","pid":1}
mithril-signer-node-pool1_1  | {"msg":"Signing digest","v":0,"name":"slog-rs","level":30,"time":"2022-07-05T11:29:32.744124074Z","hostname":"4fc53f5ce413","pid":1,"digester_result":"DigesterResult {\n    digest: \"e5ac1579a3fff12bf19ef88b0d9ec9d8a1c53e4d74c38c023b2e33638f454d67\",\n    last_immutable_file_number: 17,\n}"}
mithril-signer-node-pool1_1  | {"msg":"Register signatures","v":0,"name":"slog-rs","level":30,"time":"2022-07-05T11:29:32.744140625Z","hostname":"4fc53f5ce413","pid":1}
mithril-signer-node-pool1_1  | {"msg":"Epoch computation is not final and needs to be fixed: 4","v":0,"name":"slog-rs","level":40,"time":"2022-07-05T11:29:32.744155293Z","hostname":"4fc53f5ce413","pid":1}
mithril-signer-node-pool1_1  | {"msg":"SingleSignaturesComputeFailed(UnregisteredVerificationKey)","v":0,"name":"slog-rs","level":50,"time":"2022-07-05T11:29:32.744336041Z","hostname":"4fc53f5ce413","pid":1}
mithril-signer-node-pool1_1  | {"msg":"Sleeping for 1000","v":0,"name":"slog-rs","level":30,"time":"2022-07-05T11:29:32.744352051Z","hostname":"4fc53f5ce413","pid":1}
mithril-signer-node-pool2_1  | {"msg":"Signing digest","v":0,"name":"slog-rs","level":30,"time":"2022-07-05T11:29:32.73359119Z","hostname":"1c671096ee3f","pid":1,"digester_result":"DigesterResult {\n    digest: \"e5ac1579a3fff12bf19ef88b0d9ec9d8a1c53e4d74c38c023b2e33638f454d67\",\n    last_immutable_file_number: 17,\n}"}
mithril-signer-node-pool2_1  | {"msg":"Register signatures","v":0,"name":"slog-rs","level":30,"time":"2022-07-05T11:29:32.733607821Z","hostname":"1c671096ee3f","pid":1}
mithril-signer-node-pool2_1  | {"msg":"Epoch computation is not final and needs to be fixed: 4","v":0,"name":"slog-rs","level":40,"time":"2022-07-05T11:29:32.733623511Z","hostname":"1c671096ee3f","pid":1}
mithril-signer-node-pool2_1  | {"msg":"SingleSignaturesComputeFailed(UnregisteredVerificationKey)","v":0,"name":"slog-rs","level":50,"time":"2022-07-05T11:29:32.733786246Z","hostname":"1c671096ee3f","pid":1}
mithril-signer-node-pool2_1  | {"msg":"Sleeping for 1000","v":0,"name":"slog-rs","level":30,"time":"2022-07-05T11:29:32.733802416Z","hostname":"1c671096ee3f","pid":1}

=====================================================================
=====================================================================
tail -n 22 ./node-bft1/node.log
=====================================================================
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:27:28.01 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 219, dsSuffix = Nothing} at 075fc8366d353b45debedfc6faa92148c8fad584d81dbb4ea7b8b4d121489452 at slot 219
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:27:40.76 UTC] Chain extended, new tip: af93c6964de49d0696bf194c222f6e5a40e5123ef688a20613a33a705b6b736a at slot 253
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:27:40.76 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 228, dsSuffix = Nothing} at 720c625a259a23f21926fe7a30dad9b7a4b50958a508c8cfdc96a94625fbf00d at slot 228
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:27:43.75 UTC] Chain extended, new tip: 9f141fe78c0baa433c2554d3a09a9b43c47faa7b740be254893000310e5bad3b at slot 257
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:27:52.76 UTC] Chain extended, new tip: bfc0b2c1c4d06699efcdf6ad7b33c48cea722fb4bb5c5d6761a3768609cf77a4 at slot 269
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:27:52.76 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 253, dsSuffix = Nothing} at af93c6964de49d0696bf194c222f6e5a40e5123ef688a20613a33a705b6b736a at slot 253
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:28:03.26 UTC] Chain extended, new tip: c6238e98f186278eeef86d13f3482ebfb9b1d01d2a28da78282bfd241524eccd at slot 283
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:28:03.26 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 257, dsSuffix = Nothing} at 9f141fe78c0baa433c2554d3a09a9b43c47faa7b740be254893000310e5bad3b at slot 257
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:28:04.75 UTC] Chain extended, new tip: ac332aea5f043b3fd5ac68a04225932a21935ad7e5c5cfbb7e5b0b00df713bff at slot 285
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:28:16.00 UTC] Chain extended, new tip: e68d08e0c127a5346a74dd06713d8de0b4e37e338a0e03987da356bb70892b99 at slot 300
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:28:16.00 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 283, dsSuffix = Nothing} at c6238e98f186278eeef86d13f3482ebfb9b1d01d2a28da78282bfd241524eccd at slot 283
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:28:18.25 UTC] Chain extended, new tip: bc07b985d7f76bacc0a726b2dc5aa76a7254f1e4548a633cdfd62c31e022b3a5 at slot 303
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:28:37.00 UTC] Chain extended, new tip: 7d53c5eba9679c96ba32d79a02cfd953280b3477f1dd8eeb18447638c8a30e20 at slot 328
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:28:37.00 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 300, dsSuffix = Nothing} at e68d08e0c127a5346a74dd06713d8de0b4e37e338a0e03987da356bb70892b99 at slot 300
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:28:58.75 UTC] Chain extended, new tip: 3e9734018c585eea160a33accf82f758713f0e7aae1fab4dc40bccd859b8066f at slot 357
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:28:58.75 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 303, dsSuffix = Nothing} at bc07b985d7f76bacc0a726b2dc5aa76a7254f1e4548a633cdfd62c31e022b3a5 at slot 303
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:29:05.50 UTC] Chain extended, new tip: 8876850840ae52ca240d517def4b9c8a5db98e2e7db17f8abf87e4f12db13d15 at slot 366
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:29:05.50 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 328, dsSuffix = Nothing} at 7d53c5eba9679c96ba32d79a02cfd953280b3477f1dd8eeb18447638c8a30e20 at slot 328
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:29:19.75 UTC] Chain extended, new tip: 5733ec701db5c9dc253dd4b611421de0c2d223e6ee99c8d61010a9fea42d504b at slot 385
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:29:19.75 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 357, dsSuffix = Nothing} at 3e9734018c585eea160a33accf82f758713f0e7aae1fab4dc40bccd859b8066f at slot 357
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:29:31.00 UTC] Chain extended, new tip: 331c824ebee92dee7717f7bcc1457ac89b0de33d76073e6edd97a28770fa364b at slot 400
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:29:31.00 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 366, dsSuffix = Nothing} at 8876850840ae52ca240d517def4b9c8a5db98e2e7db17f8abf87e4f12db13d15 at slot 366
=====================================================================

=====================================================================
tail -n 22 ./node-pool1/node.log
=====================================================================
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:27:28.00 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 219, dsSuffix = Nothing} at 075fc8366d353b45debedfc6faa92148c8fad584d81dbb4ea7b8b4d121489452 at slot 219
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:27:40.76 UTC] Chain extended, new tip: af93c6964de49d0696bf194c222f6e5a40e5123ef688a20613a33a705b6b736a at slot 253
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:27:40.76 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 228, dsSuffix = Nothing} at 720c625a259a23f21926fe7a30dad9b7a4b50958a508c8cfdc96a94625fbf00d at slot 228
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:27:43.76 UTC] Chain extended, new tip: 9f141fe78c0baa433c2554d3a09a9b43c47faa7b740be254893000310e5bad3b at slot 257
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:27:52.75 UTC] Chain extended, new tip: bfc0b2c1c4d06699efcdf6ad7b33c48cea722fb4bb5c5d6761a3768609cf77a4 at slot 269
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:27:52.75 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 253, dsSuffix = Nothing} at af93c6964de49d0696bf194c222f6e5a40e5123ef688a20613a33a705b6b736a at slot 253
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:28:03.26 UTC] Chain extended, new tip: c6238e98f186278eeef86d13f3482ebfb9b1d01d2a28da78282bfd241524eccd at slot 283
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:28:03.26 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 257, dsSuffix = Nothing} at 9f141fe78c0baa433c2554d3a09a9b43c47faa7b740be254893000310e5bad3b at slot 257
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:28:04.75 UTC] Chain extended, new tip: ac332aea5f043b3fd5ac68a04225932a21935ad7e5c5cfbb7e5b0b00df713bff at slot 285
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:28:16.00 UTC] Chain extended, new tip: e68d08e0c127a5346a74dd06713d8de0b4e37e338a0e03987da356bb70892b99 at slot 300
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:28:16.01 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 283, dsSuffix = Nothing} at c6238e98f186278eeef86d13f3482ebfb9b1d01d2a28da78282bfd241524eccd at slot 283
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:28:18.25 UTC] Chain extended, new tip: bc07b985d7f76bacc0a726b2dc5aa76a7254f1e4548a633cdfd62c31e022b3a5 at slot 303
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:28:37.00 UTC] Chain extended, new tip: 7d53c5eba9679c96ba32d79a02cfd953280b3477f1dd8eeb18447638c8a30e20 at slot 328
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:28:37.00 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 300, dsSuffix = Nothing} at e68d08e0c127a5346a74dd06713d8de0b4e37e338a0e03987da356bb70892b99 at slot 300
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:28:58.76 UTC] Chain extended, new tip: 3e9734018c585eea160a33accf82f758713f0e7aae1fab4dc40bccd859b8066f at slot 357
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:28:58.76 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 303, dsSuffix = Nothing} at bc07b985d7f76bacc0a726b2dc5aa76a7254f1e4548a633cdfd62c31e022b3a5 at slot 303
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:29:05.50 UTC] Chain extended, new tip: 8876850840ae52ca240d517def4b9c8a5db98e2e7db17f8abf87e4f12db13d15 at slot 366
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:29:05.51 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 328, dsSuffix = Nothing} at 7d53c5eba9679c96ba32d79a02cfd953280b3477f1dd8eeb18447638c8a30e20 at slot 328
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:29:19.75 UTC] Chain extended, new tip: 5733ec701db5c9dc253dd4b611421de0c2d223e6ee99c8d61010a9fea42d504b at slot 385
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:29:19.76 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 357, dsSuffix = Nothing} at 3e9734018c585eea160a33accf82f758713f0e7aae1fab4dc40bccd859b8066f at slot 357
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:29:31.00 UTC] Chain extended, new tip: 331c824ebee92dee7717f7bcc1457ac89b0de33d76073e6edd97a28770fa364b at slot 400
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:29:31.00 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 366, dsSuffix = Nothing} at 8876850840ae52ca240d517def4b9c8a5db98e2e7db17f8abf87e4f12db13d15 at slot 366
=====================================================================

=====================================================================
tail -n 22 ./node-pool2/node.log
=====================================================================
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:27:28.00 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 219, dsSuffix = Nothing} at 075fc8366d353b45debedfc6faa92148c8fad584d81dbb4ea7b8b4d121489452 at slot 219
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:27:40.75 UTC] Chain extended, new tip: af93c6964de49d0696bf194c222f6e5a40e5123ef688a20613a33a705b6b736a at slot 253
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:27:40.75 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 228, dsSuffix = Nothing} at 720c625a259a23f21926fe7a30dad9b7a4b50958a508c8cfdc96a94625fbf00d at slot 228
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:27:43.76 UTC] Chain extended, new tip: 9f141fe78c0baa433c2554d3a09a9b43c47faa7b740be254893000310e5bad3b at slot 257
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:27:52.75 UTC] Chain extended, new tip: bfc0b2c1c4d06699efcdf6ad7b33c48cea722fb4bb5c5d6761a3768609cf77a4 at slot 269
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:27:52.76 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 253, dsSuffix = Nothing} at af93c6964de49d0696bf194c222f6e5a40e5123ef688a20613a33a705b6b736a at slot 253
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:28:03.25 UTC] Chain extended, new tip: c6238e98f186278eeef86d13f3482ebfb9b1d01d2a28da78282bfd241524eccd at slot 283
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:28:03.25 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 257, dsSuffix = Nothing} at 9f141fe78c0baa433c2554d3a09a9b43c47faa7b740be254893000310e5bad3b at slot 257
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:28:04.75 UTC] Chain extended, new tip: ac332aea5f043b3fd5ac68a04225932a21935ad7e5c5cfbb7e5b0b00df713bff at slot 285
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:28:16.00 UTC] Chain extended, new tip: e68d08e0c127a5346a74dd06713d8de0b4e37e338a0e03987da356bb70892b99 at slot 300
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:28:16.01 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 283, dsSuffix = Nothing} at c6238e98f186278eeef86d13f3482ebfb9b1d01d2a28da78282bfd241524eccd at slot 283
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:28:18.25 UTC] Chain extended, new tip: bc07b985d7f76bacc0a726b2dc5aa76a7254f1e4548a633cdfd62c31e022b3a5 at slot 303
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:28:37.00 UTC] Chain extended, new tip: 7d53c5eba9679c96ba32d79a02cfd953280b3477f1dd8eeb18447638c8a30e20 at slot 328
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:28:37.00 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 300, dsSuffix = Nothing} at e68d08e0c127a5346a74dd06713d8de0b4e37e338a0e03987da356bb70892b99 at slot 300
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:28:58.76 UTC] Chain extended, new tip: 3e9734018c585eea160a33accf82f758713f0e7aae1fab4dc40bccd859b8066f at slot 357
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:28:58.76 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 303, dsSuffix = Nothing} at bc07b985d7f76bacc0a726b2dc5aa76a7254f1e4548a633cdfd62c31e022b3a5 at slot 303
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:29:05.50 UTC] Chain extended, new tip: 8876850840ae52ca240d517def4b9c8a5db98e2e7db17f8abf87e4f12db13d15 at slot 366
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:29:05.50 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 328, dsSuffix = Nothing} at 7d53c5eba9679c96ba32d79a02cfd953280b3477f1dd8eeb18447638c8a30e20 at slot 328
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:29:19.75 UTC] Chain extended, new tip: 5733ec701db5c9dc253dd4b611421de0c2d223e6ee99c8d61010a9fea42d504b at slot 385
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:29:19.76 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 357, dsSuffix = Nothing} at 3e9734018c585eea160a33accf82f758713f0e7aae1fab4dc40bccd859b8066f at slot 357
[jp:cardano.node.ChainDB:Notice:21] [2022-07-05 11:29:31.00 UTC] Chain extended, new tip: 331c824ebee92dee7717f7bcc1457ac89b0de33d76073e6edd97a28770fa364b at slot 400
[jp:cardano.node.ChainDB:Info:25] [2022-07-05 11:29:31.00 UTC] Took ledger snapshot DiskSnapshot {dsNumber = 366, dsSuffix = Nothing} at 8876850840ae52ca240d517def4b9c8a5db98e2e7db17f8abf87e4f12db13d15 at slot 366
=====================================================================

Interact with the Mithril aggregator by using the Mithril client

Step 1: Prepare some useful variables

# Cardano network
export NETWORK=devnet

# Aggregator API endpoint URL
export AGGREGATOR_ENDPOINT=http://localhost:8080/aggregator

# Digest of the latest produced snapshot for convenience of the demo
# You can also modify this variable and set it to the value of the digest of a snapshot that you can retrieve at step 2
export SNAPSHOT_DIGEST=latest

You can pick an online test aggregator directly from the Mithril Explorer.

Step 2: Select a snapshot

List the available snapshots with which you can bootstrap a Cardano node:

NETWORK=$NETWORK AGGREGATOR_ENDPOINT=$AGGREGATOR_ENDPOINT ./mithril-client snapshot list

You will see a list of snapshots:

+-------+-----------+---------+------------------------------------------------------------------+------------+-----------+--------------------------------+
| Epoch | Immutable | Network | Digest                                                           | Size       | Locations | Created                        |
+-------+-----------+---------+------------------------------------------------------------------+------------+-----------+--------------------------------+
| 219   | 4387      | preview | 83579cd3bd89438f86e626b102bab6132eef95d01b736ffa19e96d055ba6a596 | 2086080281 |         1 | 2023-06-01T12:43:23.782943645Z |
+-------+-----------+---------+------------------------------------------------------------------+------------+-----------+--------------------------------+
| 219   | 4383      | preview | 7068029bee4996edf15b8f1e7120c3320ca50491ccbdc5841ac072e84bfe4c4d | 2084049995 |         1 | 2023-06-01T07:47:44.359699075Z |
+-------+-----------+---------+------------------------------------------------------------------+------------+-----------+--------------------------------+
| 219   | 4382      | preview | da32d417c7fc6bbdbd780191c81f0264cea0af9dbb1bbd0fc7fdcf6e0976cb75 | 2084517087 |         1 | 2023-06-01T06:31:17.609437466Z |
+-------+-----------+---------+------------------------------------------------------------------+------------+-----------+--------------------------------+
| 219   | 4381      | preview | a045b7b552c8412dbd0cfe4d418b7ac3a0cf39bfb5ad4d1a39a164217a394e40 | 2084235879 |         1 | 2023-06-01T05:10:52.039770378Z |
+-------+-----------+---------+------------------------------------------------------------------+------------+-----------+--------------------------------+
| 219   | 4380      | preview | 9a88639bd59492c3cb67d9d1ac005998292e41faa7e116ff05c5de2d08a8374e | 2083904532 |         1 | 2023-06-01T03:56:43.834905913Z |
+-------+-----------+---------+------------------------------------------------------------------+------------+-----------+--------------------------------+

Step 3: Show snapshot details

To get more details from a specific snapshot (optional), run:

NETWORK=$NETWORK AGGREGATOR_ENDPOINT=$AGGREGATOR_ENDPOINT ./mithril-client snapshot show $SNAPSHOT_DIGEST

You will see more information about the snapshot:

+-----------------------+-----------------------------------------------------------------------------------------+
| Info                  | Value                                                                                   |
+-----------------------+-----------------------------------------------------------------------------------------+
| Epoch                 | 218                                                                                     |
+-----------------------+-----------------------------------------------------------------------------------------+
| Immutable File Number | 4367                                                                                    |
+-----------------------+-----------------------------------------------------------------------------------------+
| Network               | preview                                                                                 |
+-----------------------+-----------------------------------------------------------------------------------------+
| Digest                | 5f6e925144d9f6f425b79a0b2db92040738505a0b645ab5f3277f45f8879d2ac                        |
+-----------------------+-----------------------------------------------------------------------------------------+
| Size                  | 2080819008                                                                              |
+-----------------------+-----------------------------------------------------------------------------------------+
| Location 1            | https://storage.googleapis.com/mithril-pre-release-preview-cs/preview-e2…879d2ac.tar.gz |
+-----------------------+-----------------------------------------------------------------------------------------+
| Created               | 2023-05-31T12:50:45.978711344Z                                                          |
+-----------------------+-----------------------------------------------------------------------------------------+
| Compression Algorithm | Zstandard                                                                               |
+-----------------------+-----------------------------------------------------------------------------------------+

Step 4: Download and verify the selected snapshot

To download the selected snapshot from the remote location to your remote location, run:

NETWORK=$NETWORK AGGREGATOR_ENDPOINT=$AGGREGATOR_ENDPOINT ./mithril-client snapshot download $SNAPSHOT_DIGEST

You will see that the certificate chain is validated to ensure the issued certificate is genuine and then the selected snapshot archive is downloaded, unpacked and verified against the corresponding certificate.

Download success 85f09b39b0b5a13cec9d8fe7ffb82b5e5f236f02ae896f4e47b77e5cd1f2a917 #1
from http://0.0.0.0:8080/aggregator/snapshot/85f09b39b0b5a13cec9d8fe7ffb82b5e5f236f02ae896f4e47b77e5cd1f2a917/download
to /home/mithril/data/devnet /85f09b39b0b5a13cec9d8fe7ffb82b5e5f236f02ae896f4e47b77e5cd1f2a917/snapshot.archive.tar.gz
Unpacking snapshot...
Unpack success 85f09b39b0b5a13cec9d8fe7ffb82b5e5f236f02ae896f4e47b77e5cd1f2a917
to /home/mithril/data/devnet /85f09b39b0b5a13cec9d8fe7ffb82b5e5f236f02ae896f4e47b77e5cd1f2a917/db

To restore a Cardano node, run:

docker run -v cardano-node-ipc:/ipc -v cardano-node-data:/data \
  --mount type=bind,source="./data/devnet/85f09b39b0b5a13cec9d8fe7ffb82b5e5f236f02ae896f4e47b77e5cd1f2a917/db",target=/data/db/ \
  -e NETWORK=devnet \
  inputoutput/cardano-node

Run a private Mithril network

Video demonstration​

Pre-requisites​

Download the source file​

Change the directory​

Run a private Mithril/Cardano network (devnet) locally​

Step 1: Launch the devnet​

Step 2: Query the devnet​

Step 3: Observe the devnet​

Interact with the Mithril aggregator by using the Mithril client​

Step 1: Prepare some useful variables​

Step 2: Select a snapshot​

Step 3: Show snapshot details​

Step 4: Download and verify the selected snapshot​