> For the complete documentation index, see [llms.txt](https://exfaz.gitbook.io/namada/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://exfaz.gitbook.io/namada/panduan-operator/menjalankan-node-penuh/variabel-lingkungan.md).

# Variabel lingkungan

Secara default, setiap kali buku besar namada dimulai, konfigurasi yang ditemukan di file konfigurasi buku besar akan diterapkan.

Contoh file konfigurasi buku besar ditampilkan di bawah.

{% code overflow="wrap" %}

```
wasm_dir = "wasm"
 
[ledger]
genesis_time = "2023-06-29T17:00:00+00:00"
chain_id = "<namada-mainnet>"
 
[ledger.shell]
base_dir = "/Users/fraccaman/Library/Application Support/Namada"
storage_read_past_height_limit = 3600
db_dir = "db"
cometbft_dir = "cometbft"
tendermint_mode = "Full"
 
[ledger.cometbft]
proxy_app = "tcp://127.0.0.1:26658"
moniker = "1337-leet-1337"
db_backend = "goleveldb"
db_dir = "data"
log_level = "info"
log_format = "plain"
genesis_file = "config/genesis.json"
node_key_file = "config/node_key.json"
abci = "socket"
filter_peers = false
priv_validator_key_file = "config/priv_validator_key.json"
priv_validator_state_file = "data/priv_validator_state.json"
priv_validator_laddr = ""
 
[ledger.cometbft.rpc]
laddr = "tcp://127.0.0.1:26657"
cors_allowed_origins = []
cors_allowed_methods = ["HEAD", "GET", "POST"]
cors_allowed_headers = ["Origin", "Accept", "Content-Type", "X-Requested-With", "X-Server-Time"]
unsafe = false
max_open_connections = 900
max_subscription_clients = 100
max_subscriptions_per_client = 5
timeout_broadcast_tx_commit = "10000ms"
max_body_bytes = 1000000
max_header_bytes = 1048576
tls_cert_file = ""
tls_key_file = ""
pprof_laddr = ""
 
[ledger.cometbft.p2p]
laddr = "tcp://0.0.0.0:26656"
external_address = ""
seeds = ""
persistent_peers = "<peer-id>@<ip>:<port>, ..."
upnp = false
addr_book_file = "config/addrbook.json"
addr_book_strict = true
max_num_inbound_peers = 40
max_num_outbound_peers = 10
unconditional_peer_ids = ""
persistent_peers_max_dial_period = "0ms"
flush_throttle_timeout = "100ms"
max_packet_msg_payload_size = 1024
send_rate = 5120000
recv_rate = 5120000
pex = true
seed_mode = false
private_peer_ids = ""
allow_duplicate_ip = false
handshake_timeout = "20000ms"
dial_timeout = "3000ms"
 
[ledger.cometbft.mempool]
recheck = true
broadcast = true
wal_dir = ""
size = 5000
max_txs_bytes = 1073741824
cache_size = 10000
keep-invalid-txs-in-cache = false
max_tx_bytes = 1048576
max_batch_bytes = 0
 
[ledger.cometbft.consensus]
wal_file = "data/cs.wal/wal"
double_sign_check_height = 0
create_empty_blocks = true
create_empty_blocks_interval = "0ms"
peer_gossip_sleep_duration = "100ms"
peer_query_maj23_sleep_duration = "2000ms"
timeout_propose = "3000ms"
timeout_propose_delta = "500ms"
timeout_prevote = "1000ms"
timeout_prevote_delta = "500ms"
timeout_precommit = "1000ms"
timeout_precommit_delta = "500ms"
timeout_commit = "10000ms"
 
[ledger.cometbft.tx_index]
indexer = "null"
 
[ledger.cometbft.instrumentation]
prometheus = false
prometheus_listen_addr = ":26660"
max_open_connections = 3
namespace = "namada_tm"
 
[ledger.cometbft.statesync]
enable = false
rpc_servers = ""
trust_height = 0
trust_hash = ""
trust_period = "168h0m0s"
discovery_time = "15000ms"
temp_dir = ""
```

{% endcode %}

RUNTUH

Namun, dimungkinkan untuk mengganti konfigurasi dengan mengatur variabel lingkungan. Variabel apa pun yang ditemukan di konfigurasi dapat diakses melalui variabel lingkungan yang dibuat dengan cara di bawah ini.

#### Membangun variabel lingkungan

Nama variabel lingkungan yang dikenali berasal dari kunci konfigurasi dengan:

1. Siapkan `NAMADA_`kuncinya
2. Huruf besar setiap huruf kuncinya. Misalnya `p2p_pex`menjadi`P2P_PEX`
3. Masukkan a `__`untuk setiap nilai yang disarangkan. Misalnya `ledger.cometbft`menjadi`LEDGER__COMETBFT`

Oleh karena itu, opsi `p2p_pex`di `[ledger.cometbft]`dapat diatur oleh

{% code overflow="wrap" %}

```
NAMADA_LEDGER__COMETBFT__P2P_PEX=true # or false, depending on your heart's desires
```

{% endcode %}

di lingkungan

{% hint style="danger" %}
**Catatan** : Pada prinsipnya, even `.`dapat digunakan untuk nama variabel lingkungan. Namun, di Bash, hanya bentuk garis bawah ganda yang dapat digunakan, karena Bash tidak mengizinkan titik pada nama variabel lingkungan. Oleh karena itu, kami menghilangkan bentuk titik.
{% endhint %}