How to Force Logstash to Reparse a File?
By default, Logstash's file input plugin tracks the parts of a file it has already processed. However, when you want Logstash to reparse a file starting from the beginning, you would need to set the sincedb_path
option to /dev/null
as demonstrated in the following code:
input {
file {
path => ["/var/logs/my_logfile"]
start_position => "beginning"
sincedb_path => "/dev/null"
}
}
This configuration sets up the Logstash file input plugin to read logs from the specified file path. It instructs Logstash to read from the beginning of the file by setting its start_position
to beginning
. Additionally, it disables sincedb
tracking by assigning /dev/null
, enabling the file to be reprocessed.
-
How to Use JSON with Logstash?
If you have JSON-formatted logs that you want to ingest and process with Logstash, follow these steps: Assuming you have logs in the following JSON format: {"status": 200, "ip": "127.0.0.1", "level...
Questions -
How to Check if a Tag Exists in Logstash?
To determine whether a tag exists within Logstash, you can use conditional statements. Here's how you can do that: if "yourtag" in [tags] { # Perform actions when the tag "yourtag" exists } This...
Questions -
How to Force Logstash to Reparse a File?
By default, Logstash's file input plugin tracks the parts of a file it has already processed. However, when you want Logstash to reparse a file starting from the beginning, you would need to set th...
Questions
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