1、啓動 elasticsearch 如出現異常 can not run elasticsearch as root
解決方法:創建ES 賬戶,修改文件夾 文件 所屬用戶 組
2、啓動異常:ERROR: bootstrap checks failed
system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own risk
問題原因:因爲Centos6不支持SecComp,而ES5.5.0默認bootstrap.system_call_filter爲true進行檢測,所以導致檢測失敗,失敗後直接導致ES不能啓動。詳見 :https://github.com/elastic/elasticsearch/issues/22899
解決方法:在elasticsearch.yml中配置bootstrap.system_call_filter爲false,注意要在Memory下面:
bootstrap.memory_lock: false
bootstrap.system_call_filter: false
3、啓動後,如果只有本地可以訪問,嘗試修改配置文件 elasticsearch.yml
中network.host(注意配置文件格式不是以 # 開頭的要空一格, : 後要空一格)
爲 network.host: 0.0.0.0
默認端口是 9200
注意:關閉防火牆 或者開放9200端口
4、ERROR: bootstrap checks failed
max file descriptors [4096] for elasticsearch process likely too low, increase to at least [65536]
max number of threads [1024] for user [lishang] likely too low, increase to at least [2048]
解決方法:切換到root用戶,編輯limits.conf 添加類似如下內容
vi /etc/security/limits.conf
添加如下內容:
soft nofile 65536
hard nofile 131072
soft nproc 2048
hard nproc 4096
5、max number of threads [1024] for user [lish] likely too low, increase to at least [2048]
解決:切換到root用戶,進入limits.d目錄下修改配置文件。
vi /etc/security/limits.d/90-nproc.conf
修改如下內容:
- soft nproc 1024
修改爲
- soft nproc 2048
6、max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144]
解決:切換到root用戶修改配置sysctl.conf
vi /etc/sysctl.conf
添加下面配置:
vm.max_map_count=655360
並執行命令:
sysctl -p
然後,重新啓動elasticsearch,即可啓動成功。