elasticsearch 索引清理脚本及常用命令

elastic索引日志清理不及时，很容易产生磁盘紧张，官网给出curl -k -XDELETE可以清理不需要的索引日志。

清理脚本

#!/bin/bash
#Author: [email protected]
#date: 2019.03.28

# 需要清理几天以前的索引日志
CLEAN_DAY=7

# 获取N天以前的年月日
YEAR=$(date -d "$(date -I) -$CLEAN_DAY"day"" +%Y)
MONTH=$(date -d "$(date -I) -$CLEAN_DAY"day"" +%m)
DAY=$(date -d "$(date -I) -$CLEAN_DAY"day"" +%d)

# 获取需要过滤N天前的ES索引数据
DATA=`curl -sk https://esadmin:[email protected]:9200/_cat/indices?v \
|awk '/[0-9]{4}-[0-9]{2}-[0-9]{2}/ {print $3}' |awk -F- '{s2=mktime($(NF-2)" "$(NF-1)" "$NF" 0 0 0");\
s1=systime()}{if(s1-s2 >= 86400*"'$CLEAN_DAY'") print $0}'`

echo "即将清理"$YEAR'-'$MONTH'-'$DAY"前ES索引数据>>>>>>>>"
echo "清理数据为: "$DATA 

# 执行清理工作
for i in $DATA
    do
    sleep 3
    curl -k -XDELETE https://esadmin:[email protected]:9200/$i
done

echo "=======================" 
echo    "执行完成"
echo "======================="

• 添加到任务计划，每天3点执行清理

crontab -e
00 03 * * * sh /apps/sh/ESindex_clean_v3.sh > /dev/null 2>&1

常用命令

• 查看索引列表
  curl -k https://your_username:[email protected]:9200/_cat/indices?v

• 查询集群是否健康
  curl -k https://your_username:[email protected]:9200/_cluster/health

• 查看所有shard
  curl -k https://your_username:[email protected]:9200/_cat/shards

• 启动命令
  /usr/local/elasticsearch/bin/elasticsearch -d