port 8899 not working

[Merrick17]

hello i followed the intructions ,and installed everything however the rpc-port not wokring
this is my starting script !
#!/bin/bash
exec solana-validator
--identity ~/validator-keypair.json
--known-validator 7Np41oeYqPefeNQEHSv1UDhYrehxin3NStELsSKCT4K2
--known-validator GdnSyH3YtwcxFvQrVVJMm1JhTS4QVX7MFsX56uJLUfiZ
--known-validator DE1bawNcRJB9rVm3buyMVfr8mBEoyyu73NBovf2oXJsJ
--known-validator CakcnaRDHka2gXyfbEd2d3xsvkJkqsLw2akB3zsN1D2S
--only-known-rpc
--ledger /home/sol/workspace/ledger
--rpc-port 8899
--private-rpc
--no-voting
--enable-rpc-transaction-history
--rpc-bind-address 127.0.0.1
--dynamic-port-range 8000-8010
--entrypoint entrypoint.mainnet-beta.solana.com:8001
--entrypoint entrypoint2.mainnet-beta.solana.com:8001
--entrypoint entrypoint3.mainnet-beta.solana.com:8001
--entrypoint entrypoint4.mainnet-beta.solana.com:8001
--entrypoint entrypoint5.mainnet-beta.solana.com:8001
--expected-genesis-hash 5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
--wal-recovery-mode skip_any_corrupted_record
--limit-ledger-size 100000000
--log ~/workspace/solana-validator.log