elastic安装，简单配置

安装elasticsearch：

# 下载安装包
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.2.0-darwin-x86_64.tar.gz
# 解压es
tar -xzf elasticsearch-7.2.0-darwin-x86_64.tar.gz
# 修改目录
mv elasticsearch-7.2.0 /usr/local/
# 创建软连接
ln -s /usr/local/elasticsearch-7.2.0 /usr/local/elasticsearch
# 创建es执行用户
useradd es
# 修改目录 权限
chown -R es:es /usr/local/elasticsearch-7.2.0
chown -R es:es /usr/local/elasticsearch

修改elasticsearch配置：

修改配置文件：config/elasticsearch.yml

# ---------------------------------- Cluster -----------------------------------
# Use a descriptive name for your cluster:
cluster.name: qx-car
# ------------------------------------ Node ------------------------------------
# Use a descriptive name for the node:
node.name: node-1
# ----------------------------------- Paths ------------------------------------
# Path to directory where to store the data (separate multiple locations by comma):
path.data: /data/service/elasticsearch
# Path to log files:
path.logs: /data/logs/elasticsearch
# ----------------------------------- Memory -----------------------------------
# Lock the memory on startup:
bootstrap.memory_lock: true
# ---------------------------------- Network -----------------------------------
# Set the bind address to a specific IP (IPv4 or IPv6):
network.host: 172.18.63.171
# Set a custom port for HTTP:
http.port: 9200
# --------------------------------- Discovery ----------------------------------
# Bootstrap the cluster using an initial set of master-eligible nodes:
cluster.initial_master_nodes: ["node-1"]

修改配置文件：config/jvm.options

# 内存修改
-Xms16g
-Xmx16g

# 创建 data目录
mkdir /data/service/elasticsearch
# 创建 log目录
mkdir /data/logs/elasticsearch
# 修改目录权限
chown -R es:es /data/service/elasticsearch
chown -R es:es /data/logs/elasticsearch

修改系统配置：

#  关闭交换分区，防止内存置换降低性能。 将/etc/fstab 文件中包含swap的行注释掉
sed -i '/swap/s/^/#/' /etc/fstab
swapoff -a
# 单用户可以打开的最大文件数量，可以设置为官方推荐的65536或更大些
echo "* - nofile 655360" >> /etc/security/limits.conf
# 单用户线程数调大
echo "* - nproc 131072" >> /etc/security/limits.conf
# 设置es内存锁无限制
echo "es soft memlock unlimited" >> /etc/security/limits.conf
echo "es hard memlock unlimited" >> /etc/security/limits.conf
# 单进程可以使用的最大map内存区域数量
echo "vm.max_map_count = 655360" >> /etc/sysctl.conf
# 参数修改立即生效
sysctl -p

启动与关闭：

# 切换账号
su es
# 启动es
/usr/local/elasticsearch/bin/elasticsearch -d -p pid
# 关闭es
pkill -F /usr/local/elasticsearch/pid

参考文章: