add CHARON_FALLBACK_BEACON_NODE_ENDPOINTS env

Author: DiogoSantoss

.env.sample.holesky

@@ -66,6 +66,9 @@ LIGHTHOUSE_CHECKPOINT_SYNC_URL=https://checkpoint-sync.holesky.ethpandaops.io/
 # Increase the duration charon will wait while publishing data to the beacon node
 #CHARON_BEACON_NODE_SUBMIT_TIMEOUT=
 
+# A list of beacon nodes to use if the primary list are offline or unhealthy.
+#CHARON_FALLBACK_BEACON_NODE_ENDPOINTS=
+
 # Override the charon logging level; debug, info, warning, error.
 #CHARON_LOG_LEVEL=
 

.env.sample.hoodi

@@ -66,6 +66,9 @@ LIGHTHOUSE_CHECKPOINT_SYNC_URL=https://checkpoint-sync.hoodi.ethpandaops.io/
 # Increase the duration charon will wait while publishing data to the beacon node
 #CHARON_BEACON_NODE_SUBMIT_TIMEOUT=
 
+# A list of beacon nodes to use if the primary list are offline or unhealthy.
+#CHARON_FALLBACK_BEACON_NODE_ENDPOINTS=
+
 # Override the charon logging level; debug, info, warning, error.
 #CHARON_LOG_LEVEL=
 

.env.sample.mainnet

@@ -66,6 +66,9 @@ LIGHTHOUSE_CHECKPOINT_SYNC_URL=https://mainnet.checkpoint.sigp.io/
 # Increase the duration charon will wait while publishing data to the beacon node
 #CHARON_BEACON_NODE_SUBMIT_TIMEOUT=
 
+# A list of beacon nodes to use if the primary list are offline or unhealthy.
+#CHARON_FALLBACK_BEACON_NODE_ENDPOINTS=
+
 # Override the charon logging level; debug, info, warning, error.
 #CHARON_LOG_LEVEL=
 

docker-compose.yml

@@ -82,6 +82,7 @@ services:
       - CHARON_BEACON_NODE_ENDPOINTS=${CHARON_BEACON_NODE_ENDPOINTS:-http://lighthouse:5052}
       - CHARON_BEACON_NODE_TIMEOUT=${CHARON_BEACON_NODE_TIMEOUT:-3s}
       - CHARON_BEACON_NODE_SUBMIT_TIMEOUT=${CHARON_BEACON_NODE_SUBMIT_TIMEOUT:-4s}
+      - CHARON_FALLBACK_BEACON_NODE_ENDPOINTS=${CHARON_FALLBACK_BEACON_NODE_ENDPOINTS:-}
       - CHARON_LOG_LEVEL=${CHARON_LOG_LEVEL:-info}
       - CHARON_LOG_FORMAT=${CHARON_LOG_FORMAT:-console}
       - CHARON_P2P_RELAYS=${CHARON_P2P_RELAYS:-https://0.relay.obol.tech,https://1.relay.obol.tech/}