elasticsearch 安裝歷程

elasticsearch 安裝:
下載頁：https://www.elastic.co/downloads/elasticsearch#ga-release
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.5.4.tar.gz
tar -zxvf elasticsearch-6.5.4.tar.gz

cd config
vim elasticsearch.yml
寫入 (記得要有空格)
xpack.ml.enabled: false
network.host: 0.0.0.0
http.port: 8301
#memory
bootstrap.memory_lock: false
bootstrap.system_call_filter: false


修改系統配置：
注意 要以root身份執行下面的腳本，執行後要重新登錄普通賬戶啓動ES

#!/bin/bash
echo "* soft    nofile  65536" >> /etc/security/limits.conf
echo "* hard    nofile  65536" >> /etc/security/limits.conf
echo "* soft memlock unlimited" >> /etc/security/limits.conf
echo "* hard memlock unlimited" >> /etc/security/limits.conf
echo "vm.max_map_count = 262144" >> /etc/sysctl.conf
sysctl -p
ulimit -l unlimited
查看配置：sysctl -p

不能用root啓動 把權限賦給es用戶 chown -R es:es /usr/local/elasticsearch/ 啓動：./bin/elasticsearch

如果報錯
OpenJDK 64-Bit Server VM warning: If the number of processors is expected to increase from one, then you should configure the number of parallel GC threads appropriately using -XX:ParallelGCThreads=N
在config/jvm.options 需要修改
添加
-XX:-AssumeMP
這些參數要比系統的內存要小
-Xms
-Xmx