No head block in fork db, perhaps we need to replay

[snipper15]

First , I have remove /.local/share/eosio/nodeos/data's data, and when I start a nodeos, I received some error,but I don't know what's wrong.
./nodeos -e -p eosio --plugin eosio::chain_api_plugin --plugin eosio::history_api_plugin --logconf ./log/nodeos.log
info 2018-11-28T14:57:49.071 thread-0 chain_plugin.cpp:333 plugin_initialize ] initializing chain plugin
warn 2018-11-28T14:57:49.071 thread-0 chain_plugin.cpp:605 plugin_initialize ] Starting up fresh blockchain with default genesis state.
info 2018-11-28T14:57:49.078 thread-0 http_plugin.cpp:422 plugin_initialize ] configured http to listen on 127.0.0.1:8888
info 2018-11-28T14:57:49.078 thread-0 net_plugin.cpp:2901 plugin_initialize ] Initialize net plugin
info 2018-11-28T14:57:49.078 thread-0 net_plugin.cpp:2927 plugin_initialize ] host: 0.0.0.0 port: 9876
info 2018-11-28T14:57:49.078 thread-0 net_plugin.cpp:2998 plugin_initialize ] my node_id is 6cedfbb904501c585d526c451d86fecf49501c29e6fa181b50d3985c65c2e925
info 2018-11-28T14:57:49.079 thread-0 main.cpp:110 main ] nodeos version v1.4.4
info 2018-11-28T14:57:49.079 thread-0 main.cpp:111 main ] eosio root is /home/ubuntu/.local/share
info 2018-11-28T14:57:49.079 thread-0 main.cpp:112 main ] nodeos using configuration file /home/ubuntu/.local/share/eosio/nodeos/config/config.ini
info 2018-11-28T14:57:49.079 thread-0 main.cpp:113 main ] nodeos data directory is /home/ubuntu/.local/share/eosio/nodeos/data
error 2018-11-28T14:57:49.079 thread-0 controller.cpp:1596 startup ] No head block in fork db, perhaps we need to replay
warn 2018-11-28T14:57:49.079 thread-0 controller.cpp:574 initialize_fork_db ] Initializing new blockchain with genesis state
info 2018-11-28T14:57:49.131 thread-0 chain_plugin.cpp:707 plugin_startup ] starting chain in read/write mode
info 2018-11-28T14:57:49.131 thread-0 chain_plugin.cpp:711 plugin_startup ] Blockchain started; head block is #1, genesis timestamp is 2018-06-01T12:00:00.000
info 2018-11-28T14:57:49.131 thread-0 http_plugin.cpp:486 plugin_startup ] start listening for http requests
error 2018-11-28T14:57:49.131 thread-0 http_plugin.cpp:493 plugin_startup ] http service failed to start: Address already in use
error 2018-11-28T14:57:49.152 thread-0 main.cpp:152 main ] Address already in use

[jgiszczak]

Some process is already using port 8888. It may be another instance of nodeos already running or you may be running a proxy service on your machine. Either shut it down, reconfigure it, or reconfigure nodeos to use a different port.

If you still have the problem and wish to discuss further, please post it in https://eosio.stackexchange.com. To keep things organized, Github issues are intended for bug reporting and feature tracking, and Stack Exchange is the right place for any technical support discussions. Thanks!