若是你將Logstash做爲服務運行,請使用如下命令之一來中止它:安全
systemctl stop logstash
initctl stop logstash
/etc/init.d/logstash stop
若是你正在POSIX系統的控制檯中直接運行Logstash,那麼你能夠經過向Logstash發送SIGTERM來中止它,例如:ruby
kill -TERM {logstash_pid}
或者,在控制檯中輸入Ctrl-C
。app
當你試圖關閉一個正在運行的Logstash實例時,在它能夠安全關閉以前,Logstash會執行幾個步驟,它必須:ui
如下條件影響關閉過程:this
sleep(10000)
的Ruby過濾器或執行很是繁重查詢的Elasticsearch過濾器。這些狀況使得關閉過程的持續時間和成功不可預測。插件
Logstash有一個失速檢測機制,能夠分析關閉期間管道和插件的行爲,這種機制按期生成關於內部隊列中運行中的事件計數和繁忙工做線程列表的信息。線程
爲使Logstash在中斷運行的狀況下強制終止,當你啓動Logstash時使用--pipeline.unsafe_shutdown
。code
不安全的關閉、Logstash進程的強制關閉或因爲任何其餘緣由致使的Logstash進程崩潰均可能致使數據丟失(除非你啓用了Logstash使用持久隊列),儘量安全的關閉Logstash。
在本例中,緩慢的過濾器執行能夠防止管道徹底關閉,因爲Logstash是由--pipeline.unsafe_shutdown
標誌啓動的,所以關閉會致使20個事件的丟失。orm
bin/logstash -e 'input { generator { } } filter { ruby { code => "sleep 10000" } } output { stdout { codec => dots } }' -w 1 --pipeline.unsafe_shutdown Pipeline main started ^CSIGINT received. Shutting down the agent. {:level=>:warn} stopping pipeline {:id=>"main", :level=>:warn} Received shutdown signal, but pipeline is still waiting for in-flight events to be processed. Sending another ^C will force quit Logstash, but this may cause data loss. {:level=>:warn} {"inflight_count"=>125, "stalling_thread_info"=>{["LogStash::Filters::Ruby", {"code"=>"sleep 10000"}]=>[{"thread_id"=>19, "name"=>"[main]>worker0", "current_call"=>"(ruby filter code):1:in `sleep'"}]}} {:level=>:warn} The shutdown process appears to be stalled due to busy or blocked plugins. Check the logs for more information. {:level=>:error} {"inflight_count"=>125, "stalling_thread_info"=>{["LogStash::Filters::Ruby", {"code"=>"sleep 10000"}]=>[{"thread_id"=>19, "name"=>"[main]>worker0", "current_call"=>"(ruby filter code):1:in `sleep'"}]}} {:level=>:warn} {"inflight_count"=>125, "stalling_thread_info"=>{["LogStash::Filters::Ruby", {"code"=>"sleep 10000"}]=>[{"thread_id"=>19, "name"=>"[main]>worker0", "current_call"=>"(ruby filter code):1:in `sleep'"}]}} {:level=>:warn} Forcefully quitting logstash.. {:level=>:fatal}
當--pipeline.unsafe_shutdown
未啓用,Logstash繼續按期運行並生成這些報告。隊列