The firelens didn't send out logs after remote loki server is restarted

The ecs firelens log driver didn't send out the logs again after remote loki server is restarted.

Fluent Bit v1.8.6

• Copyright (C) 2019-2021 The Fluent Bit Authors
• Copyright (C) 2015-2018 Treasure Data
• Fluent Bit is a CNCF sub-project under the umbrella of Fluentd
• https://fluentbit.io

[2021/09/08 06:13:28] [ info] [engine] started (pid=1)
[2021/09/08 06:13:28] [ info] [storage] version=1.1.1, initializing...
[2021/09/08 06:13:28] [ info] [storage] in-memory
[2021/09/08 06:13:28] [ info] [storage] normal synchronization mode, checksum disabled, max_chunks_up=128
[2021/09/08 06:13:28] [ info] [cmetrics] version=0.2.1
[2021/09/08 06:13:28] [ info] [input:forward:forward.0] listening on unix:///var/run/fluent.sock
[2021/09/08 06:13:28] [ info] [input:forward:forward.1] listening on 0.0.0.0:24224
[2021/09/08 06:13:28] [ info] [input:tcp:tcp.2] listening on 127.0.0.1:8877
[2021/09/08 06:13:28] [ info] [output:loki:loki.1] configured, hostname=172.30.1.109:24223
[2021/09/08 06:13:28] [ info] [sp] stream processor started
[2021/09/08 06:19:13] [error] [upstream] connection #31 to 172.30.1.109:24223 timed out after 10 seconds