77 lines
2.8 KiB
Markdown
77 lines
2.8 KiB
Markdown
## Installation
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Install [latest Rust](https://rustup.rs/) (1.26+) and [latest Bitcoin Core](https://bitcoincore.org/en/download/) (0.16+).
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Also, install `clang` (for building `rust-rocksdb`):
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```bash
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$ sudo apt update
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$ sudo apt install clang
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```
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## Build
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First build should take ~20 minutes:
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```bash
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$ cargo build --release
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```
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## Bitcoind configuration
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Allow Bitcoin daemon to sync before starting Electrum server:
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```bash
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$ bitcoind -server=1 -daemon=0 -txindex=0 -prune=0
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```
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If you are using `-rpcuser=USER` and `-rpcpassword=PASSWORD` for authentication, please use `--cookie=USER:PASSWORD` command-line flag.
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Otherwise, [`~/.bitcoin/.cookie`](https://github.com/bitcoin/bitcoin/blob/0212187fc624ea4a02fc99bc57ebd413499a9ee1/contrib/debian/examples/bitcoin.conf#L70-L72) will be read, allowing this server to use bitcoind JSONRPC interface.
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## Usage
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First index sync should take ~2.5 hours:
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```bash
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$ cargo run --release -- -vvv --timestamp --db-dir ./db
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2018-06-28T23:09:17 - DEBUG - BlockchainInfo { chain: "main", blocks: 529656, headers: 529656, bestblockhash: "0000000000000000000d6344eeaa8dece87a438c25948e9038e8fecd4c64ac0f", size_on_disk: 197723753341, pruned: false }
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2018-06-28T23:09:17 - DEBUG - opening ./db/mainnet with StoreOptions { bulk_import: true }
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2018-06-28T23:09:30 - INFO - indexing 1300 blk*.dat files
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2018-06-29T00:28:16 - DEBUG - read 1300 blk files
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2018-06-29T00:28:22 - INFO - indexed 529657 blocks
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2018-06-29T00:28:23 - INFO - starting full compaction
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2018-06-29T01:35:02 - INFO - finished full compaction
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2018-06-29T01:35:02 - DEBUG - closing ./db/mainnet
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2018-06-29T01:35:03 - DEBUG - opening ./db/mainnet with StoreOptions { bulk_import: false }
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2018-06-29T01:35:12 - DEBUG - applying 529657 new headers from height 0
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2018-06-29T01:35:13 - INFO - RPC server running on 127.0.0.1:50001
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2018-06-29T01:35:14 - DEBUG - downloading new block headers (529657 already indexed) from 000000000000000000207ca53fd49f8de7f7f67dcde34af505882ab2be5d8fc5
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2018-06-29T01:35:14 - INFO - best=000000000000000000207ca53fd49f8de7f7f67dcde34af505882ab2be5d8fc5 height=529668 @ 2018-06-28T22:26:05Z (12 left to index)
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2018-06-29T01:35:15 - DEBUG - applying 12 new headers from height 529657
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```
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The index database is stored here:
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```bash
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$ du db/
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36G db/mainnet/
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```
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## Electrum client
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```bash
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# Connect only to the local server, for better privacy
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$ electrum --oneserver --server=127.0.0.1:50001:t
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```
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## Monitoring
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Indexing and serving metrics are exported via [Prometheus](https://github.com/pingcap/rust-prometheus):
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```bash
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$ sudo apt install prometheus
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$ echo "
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scrape_configs:
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- job_name: electrs
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static_configs:
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- targets: ['localhost:42024']
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" | sudo tee -a /etc/prometheus/prometheus.yml
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$ sudo systemctl restart prometheus
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$ firefox 'http://localhost:9090/graph?g0.range_input=1h&g0.expr=index_height&g0.tab=0'
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```
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