Unable to connect to sentinel

[Manhar0911]

Getting this error while connecting with sentinel master. My master name is master.

WARNING:valkey-test:⚠️ Valkey client initialized, but ping failed: No master found for 'master' : <valkey.client.Valkey(<valkey.connection.ConnectionPool(<valkey.connection.Connection(host=sentinel.redis-ptdev5-ns.svc.cluster.local,port=26379,db=0)>)>)> - ConnectionError("Error while reading from sentinel.redis-ptdev5-ns.svc.cluster.local:26379 : (104, 'Connection reset by peer')")

Can you please suggest what i may be missing here.

class SentinelManagedSSLConnection(SentinelManagedConnection, SSLConnection):
    def __init__(self, *args, **kwargs):
        kwargs.pop("ssl", None)  # prevent unexpected 'ssl' argument
        super().__init__(*args, **kwargs)

# Load environment variables
use_tls = os.getenv("REDIS_USE_TLS", "true").lower() == "true"
cacert_path = os.getenv("REDIS_CACERT_PATH", "/etc/rediscert/ca.crt")
sentinel_master_name = os.getenv("REDIS_SENTINEL_MASTER_NAME", "master")
sentinel_addresses_raw = os.getenv("REDIS_SENTINEL_ADDRESSES", "sentinel.redis-ptdev5-ns.svc.cluster.local:26379")
read_timeout = int(os.getenv("REDIS_READ_TIMEOUT", "200")) / 1000

# Parse sentinel addresses
sentinel_addrs = []
for addr in sentinel_addresses_raw.strip("[]").split(","):
    addr = addr.strip()
    if addr:
        host, port = addr.split(":")
        sentinel_addrs.append((host.strip(), int(port.strip())))

# TLS kwargs
tls_kwargs = {}
if use_tls:
    tls_kwargs["ssl"] = True
    tls_kwargs["ssl_ca_certs"] = cacert_path

try:
    sentinel = Sentinel(
        sentinel_addrs,
        sentinel_kwargs={"socket_connect_timeout": 5.0, "socket_timeout": 5.0},
        connection_class=SentinelManagedSSLConnection if use_tls else None,
        **tls_kwargs
    )

    valkey_client = sentinel.master_for(
        service_name=sentinel_master_name,
        socket_timeout=read_timeout,
    )

    valkey_client.ping()
    logger.info("✅ Successfully connected to Valkey via Sentinel.")
except Exception as e:
    logger.warning(f"⚠️ Valkey client initialized, but ping failed: {e}")