Logstash error: cannot reload pipeline, because the existing pipeline is not reloadable

logstash Run time error ：

Cannot reload pipeline, because the existing pipeline is not reloadable

Pictured ：

The scenario where the above error occurs , It's starting logstash It's time to join -r Parameters ：

logstash -r -f my_logstash.conf

General startup logstash Unwanted -r Parameters . Join in -r The purpose of the parameter is to indicate logstash whenever my_logstash.conf Reload when the configuration file changes .

Root cause ：input Below stdin As a result of .

Solution ： stay my_logstash.conf In profile ,input Below stdin{} Code block , Delete or comment it out :

input {
    #stdin{
    #}
}