cronos-testnet: new pruned node compose (cronostestnet_338-3)

Verified from crypto-org-chain/cronos-testnets: genesis, 3 official seeds,
t3 statesync RPC, basetcro denom; official daily snapshots exist for restore
(sidesteps the cosmos binary-upgrade gauntlet). Closes the planner's
'cronos-testnet: no known node_path' escalation.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

compose_registry.json

@@ -1902,6 +1902,21 @@
       "cronos-mainnet-cronos-pruned_config"
     ]
   },
+  {
+    "chain": "testnet",
+    "client": "cronos",
+    "compose_file": "cronos/cronos/cronos-testnet-cronos-pruned",
+    "features": [],
+    "network": "cronos",
+    "node": "config",
+    "relay": null,
+    "stack": null,
+    "type": "pruned",
+    "volumes": [
+      "cronos-testnet-cronos-pruned",
+      "cronos-testnet-cronos-pruned_config"
+    ]
+  },
   {
     "chain": "zkevm-mainnet",
     "client": "external-node",

cronos/cronos/cronos-testnet-cronos-pruned.yml

@@ -0,0 +1,138 @@
+---
+x-logging-defaults: &logging-defaults
+  driver: json-file
+  options:
+    max-size: "512m"
+    max-file: "2"
+
+# Usage:
+#
+# mkdir rpc && cd rpc
+#
+# git init
+# git remote add origin https://github.com/StakeSquid/ethereum-rpc-docker.git
+# git fetch origin vibe
+# git checkout origin/vibe
+#
+# docker run --rm alpine sh -c "printf '0x'; head -c32 /dev/urandom | xxd -p -c 64" > .jwtsecret
+#
+# env
+# ...
+# IP=$(curl ipinfo.io/ip)
+# DOMAIN=${IP}.traefik.me
+# COMPOSE_FILE=base.yml:rpc.yml:cronos/cronos/cronos-testnet-cronos-pruned.yml
+#
+# docker compose up -d
+#
+# curl -X POST https://${IP}.traefik.me/cronos-testnet \
+#   -H "Content-Type: application/json" \
+#   --data '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
+
+services:
+  cronos-testnet:
+    build:
+      context: ./cronos
+      dockerfile: cometbft.Dockerfile
+      args:
+        CRONOS_CRONOS_VERSION: ${CRONOS_TESTNET_CRONOS_VERSION:-v1.7.8}
+    sysctls:
+      # TCP Performance
+      net.ipv4.tcp_slow_start_after_idle: 0       # Disable slow start after idle
+      net.ipv4.tcp_no_metrics_save: 1             # Disable metrics cache
+      net.ipv4.tcp_rmem: 4096 87380 16777216      # Increase TCP read buffers
+      net.ipv4.tcp_wmem: 4096 87380 16777216      # Increase TCP write buffers
+      net.core.somaxconn: 32768                   # Higher connection queue
+      # Memory/Connection Management
+      # net.core.netdev_max_backlog: 50000          # Increase network buffer
+      net.ipv4.tcp_max_syn_backlog: 30000         # More SYN requests
+      net.ipv4.tcp_max_tw_buckets: 2000000        # Allow more TIME_WAIT sockets
+    ulimits:
+      nofile: 1048576    # Max open files (for RPC/WS connections)
+    user: root
+    ports:
+      - 10521:10521
+      - 10521:10521/udp
+    expose:
+      - 8545
+      - 8546
+      - 6066
+      - 26657
+    environment:
+      - API=eth,txpool,net,debug,web3
+      - CHAINID=cronostestnet_338-3
+      - EVM_MAX_TX_GAS_WANTED=500000
+      - GENESIS_URL=https://raw.githubusercontent.com/crypto-org-chain/cronos-testnets/main/cronostestnet_338-3/genesis.json
+      - IP=${IP}
+      - JSON_RPC_BLOCK_RANGE_CAP=10000
+      - JSON_RPC_ENABLE=true
+      - JSON_RPC_ENABLE_INDEXER=true
+      - JSON_RPC_FEEHISTORY_CAP=100
+      - JSON_RPC_HTTP_TIMEOUT=30s
+      - JSON_RPC_LOGS_CAP=10000
+      - MIN_GAS=5000000000000basetcro
+      - MONIKER=d${DOMAIN:-local}
+      - P2P_PORT=10521
+      - PRUNING=custom
+      - PRUNING_INTERVAL=19
+      - PRUNING_KEEP_RECENT=100
+      - SEEDS=8fcba3485c67a2a00a383b6f45660a4ac529c6ca@52.77.30.18:26656,e65199bc579ffd89d7c021c5611f9f1c97f7ff13@54.251.209.254:26656,b8e6d6e16d236fa6a7101316d96de718200c500c@bd-cronos-testnet-seed-node-01.bdnodes.net:26656
+      - STATESYNC_RPC=https://rpc-t3.cronos.org:443
+    restart: unless-stopped
+    stop_grace_period: 5m
+    networks:
+      - chains
+    volumes:
+      - ${CRONOS_TESTNET_CRONOS_PRUNED_DATA:-cronos-testnet-cronos-pruned}:/root/.cronos/data
+      - /slowdisk:/slowdisk
+      - cronos-testnet-cronos-pruned_config:/root/.cronos/config
+    logging: *logging-defaults
+    labels:
+      - prometheus-scrape.enabled=true
+      - prometheus-scrape.port=6066
+      - prometheus-scrape.path=/metrics
+      - traefik.enable=true
+      - traefik.http.middlewares.cronos-testnet-cronos-pruned-stripprefix.stripprefix.prefixes=/cronos-testnet
+      - traefik.http.services.cronos-testnet-cronos-pruned.loadbalancer.server.port=8545
+      - ${NO_SSL:-traefik.http.routers.cronos-testnet-cronos-pruned.entrypoints=websecure}
+      - ${NO_SSL:-traefik.http.routers.cronos-testnet-cronos-pruned.tls.certresolver=myresolver}
+      - ${NO_SSL:-traefik.http.routers.cronos-testnet-cronos-pruned.rule=Host(`$DOMAIN`) && (Path(`/cronos-testnet`) || Path(`/cronos-testnet/`))}
+      - ${NO_SSL:+traefik.http.routers.cronos-testnet-cronos-pruned.rule=Path(`/cronos-testnet`) || Path(`/cronos-testnet/`)}
+      - traefik.http.routers.cronos-testnet-cronos-pruned.middlewares=cronos-testnet-cronos-pruned-stripprefix, ipallowlist
+      - traefik.http.routers.cronos-testnet-cronos-pruned.priority=50   # gets any request that is not GET with UPGRADE header
+      - traefik.http.routers.cronos-testnet-cronos-pruned-ws.priority=100   # answers GET requests first
+      - traefik.http.services.cronos-testnet-cronos-pruned-ws.loadbalancer.server.port=8546
+      - traefik.http.routers.cronos-testnet-cronos-pruned-ws.service=cronos-testnet-cronos-pruned-ws
+      - traefik.http.routers.cronos-testnet-cronos-pruned.service=cronos-testnet-cronos-pruned
+      - ${NO_SSL:-traefik.http.routers.cronos-testnet-cronos-pruned-ws.entrypoints=websecure}
+      - ${NO_SSL:-traefik.http.routers.cronos-testnet-cronos-pruned-ws.tls.certresolver=myresolver}
+      # case-insensitive Upgrade: python websocket-client sends "WebSocket" (capital W)
+      - ${NO_SSL:-traefik.http.routers.cronos-testnet-cronos-pruned-ws.rule=Host(`$DOMAIN`) && (Path(`/cronos-testnet`) || Path(`/cronos-testnet/`)) && HeadersRegexp(`Upgrade`, `(?i)websocket`)}
+      - ${NO_SSL:+traefik.http.routers.cronos-testnet-cronos-pruned-ws.rule=(Path(`/cronos-testnet`) || Path(`/cronos-testnet/`)) && HeadersRegexp(`Upgrade`, `(?i)websocket`)}
+      - traefik.http.routers.cronos-testnet-cronos-pruned-ws.middlewares=cronos-testnet-cronos-pruned-stripprefix, ipallowlist
+
+volumes:
+  cronos-testnet-cronos-pruned:
+  cronos-testnet-cronos-pruned_config:
+
+x-upstreams:
+  - id: $${ID}
+    labels:
+      provider: $${PROVIDER}
+    connection:
+      generic:
+        rpc:
+          url: $${RPC_URL}
+        ws:
+          frameSize: 20Mb
+          msgSize: 50Mb
+          url: $${WS_URL}
+    chain: cronos-testnet
+    method-groups:
+      enabled:
+        - debug
+        - filter
+    methods:
+      disabled:
+      enabled:
+        - name: txpool_content # TODO: should be disabled for rollup nodes
+...