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Ingest data in ClickHouse

Output Plugin: ClickHouse DB

This plugin sends data to Yandex ClickHouse DB.

Installation

To use the plugin, only Logagent must be installed.

sudo npm i -g @sematext/logagent 

Configuration

Preparation for the example:

  • Start ClickHouse DB
docker run -d --name clickhouse-server -p 8123:8123 -p 9000:9000 --ulimit nofile=262144:262144 yandex/clickhouse-server
  • Login via ClickHouse client
docker run -it --rm --link clickhouse-server:clickhouse-server yandex/clickhouse-client --host clickhouse-server
  • Run create table statemnt
CREATE TABLE logs(
    message String,
    severity String,
    "@timestamp" UInt64) ENGINE = Log;
  • Create a configuration file for Logagent
# Global options
options:
  includeOriginalLine: false

# note you can use any input plugin here
input:
  stdin: true


output:   
  clickhouse: 
    module: output-clickhouse
    url: http://127.0.0.1 
    port: 8123
    debug: false
    table: default.logs
    # Fields must be in the same order as specified in CREATE TABLE
    fields: 
      - 'severity'
      - 'message'
      - '@timestamp'

Stream log messages to Logagent and ClickHouse

  cat test.log | logagent --config clickhouse.yaml