ElasticSearch – 啟動失敗 – Service Start Operation Timed Out

今早在虛擬機剛裝了 ElasticSearch 7.10，我發現每次在重開機的時候，ElasticSearch 的服務會因為連線逾時而啟動失敗。

錯誤訊息

截圖：

完成的日誌記錄：

Warning: The unit file, source configuration file or drop-ins of elasticsearch.service changed on disk. Run 'systemctl daemon-reload' to reload units.
● elasticsearch.service - Elasticsearch
   Loaded: loaded (/usr/lib/systemd/system/elasticsearch.service; enabled; vendor preset: enabled)
   Active: failed (Result: timeout) since Tue 2020-12-08 09:18:55 CST; 24min ago
     Docs: https://www.elastic.co
  Process: 889 ExecStart=/usr/share/elasticsearch/bin/systemd-entrypoint -p ${PID_DIR}/elasticsearch.pid --quiet (code=killed, signal=TERM)
 Main PID: 889 (code=killed, signal=TERM)
    Tasks: 0 (limit: 3570)
   CGroup: /system.slice/elasticsearch.service

Dec 08 09:17:40 terrylin systemd[1]: Starting Elasticsearch...
Dec 08 09:18:55 terrylin systemd[1]: elasticsearch.service: Start operation timed out. Terminating.
Dec 08 09:18:55 terrylin systemd[1]: elasticsearch.service: Failed with result 'timeout'.
Dec 08 09:18:55 terrylin systemd[1]: Failed to start Elasticsearch.

解決方法

修改 ElasticSearch 設定

編輯 ElasticSearch 服務的設定檔。

$ vi /usr/lib/systemd/system/elasticsearch.service

TimeoutStartSec 這個欄位設定了在啟始服務時所等待的時間，預設的時間是 90 秒，加大這個值適當的數字，以此例來說，我設為 500。

重啟 systemd

檔案存檔接著重啟 systemd 的組態設定。

$ systemctl daemon-reload

檢查開機時的 timeout 值。

$ systemctl show elasticsearch | grep ^Timeout
TimeoutStartUSec=8min 20s
TimeoutStopUSec=infinity

這樣問題就解決囉。