1. 背景：生產(chǎn)測試后redis中產(chǎn)生大量數(shù)據(jù)
生產(chǎn)前需要清理reids集群中的數(shù)據(jù)。、
你看有很多key呢：
使用工具
使用命令，查看是否有數(shù)據(jù)：
2. 清理步驟
2.1 任意登錄一臺redis機(jī)器
執(zhí)行下面腳本：
clear_redis_cluster.sh 10.1.33.101:8001 redis
執(zhí)行日志如下：
Clearing 10.1.33.112:8028 ...
Background append only file rewriting started
READONLY You can't write against a read only replica.
Clearing 10.1.33.110:8026 ...
Background append only file rewriting started
READONLY You can't write against a read only replica.
Clearing 10.1.33.111:8027 ...
Background append only file rewriting started
READONLY You can't write against a read only replica.
Clearing 10.1.33.107:8007 ...
Background append only file rewriting started
OK
Clearing 10.1.33.108:8024 ...
Background append only file rewriting started
READONLY You can't write against a read only replica.
Clearing 10.1.33.104:8020 ...
Background append only file rewriting started
READONLY You can't write against a read only replica.
Clearing 10.1.33.114:8014 ...
Background append only file rewriting started
OK
Clearing 10.1.33.109:8025 ...
Background append only file rewriting started
READONLY You can't write against a read only replica.
Clearing 10.1.33.105:8005 ...
Background append only file rewriting started
OK
Clearing 10.1.33.108:8008 ...
Background append only file rewriting started
OK
2.2 clear_redis_cluster.sh內(nèi)容
#!/bin/bash
# Writed by yijian on 2018/8/20
# Batch to clear all nodes using FLUSHALL command
# 用來清空一個(gè)redis集群中的所有數(shù)據(jù)，要求 FLUSHALL 命令可用，
# 如果在 redis.conf 中使用 rename 改名了 FLUSHALL，則不能執(zhí)行本腳本。
# 可帶兩個(gè)參數(shù)：
# 1）參數(shù)1 集群中的任一可用節(jié)點(diǎn)（必須）
# 2）連接redis的密碼（設(shè)置了密碼才需要）
REDIS_CLI=${REDIS_CLI:-redis-cli}
REDIS_IP=${REDIS_IP:-127.0.0.1}
REDIS_PORT=${REDIS_PORT:-6379}
# 顯示用法函數(shù)
function usage()
{
echo "Usage: clear_redis_cluster.sh a_redis_node_of_cluster redis_password"
echo "Example1: clear_redis_cluster.sh '127.0.0.1:6379'"
echo "Example2: clear_redis_cluster.sh '127.0.0.1:6379' '123456'"
}
# 檢查參數(shù)個(gè)數(shù)
if test $# -lt 1 -o $# -gt 2; then
usage
exit 1
fi
# 第一個(gè)參數(shù)為集群中的節(jié)點(diǎn)，
REDIS_NODE="$1"
# 第二個(gè)參數(shù)為密碼
REDIS_PASSWORD=""
if test $# -ge 2; then
REDIS_PASSWORD="$2"
fi
# 取得IP和端口
eval $(echo "$REDIS_NODE" | awk -F[\:] '{ printf("REDIS_IP=%s\nREDIS_PORT=%s\n",$1,$2) }')
if test -z "$REDIS_IP" -o -z "$REDIS_PORT"; then
echo "Parameter error: \`$REDIS_NODE\`."
usage
exit 1
fi
# 確保redis-cli可用
echo "Checking \`redis-cli\` ..."
which "$REDIS_CLI" > /dev/null 2>1
if test $? -ne 0; then
echo "Command \`redis-cli\` is not exists or not executable."
echo "You can set environment variable \`REDIS_CLI\` to point to the redis-cli."
echo "Example: export REDIS_CLI=/usr/local/bin/redis-cli"
exit 1
fi
if test -z "$REDIS_PASSWORD"; then
redis_nodes=`redis-cli -h $REDIS_IP -p $REDIS_PORT cluster nodes | awk -F[\ \:\@] '!/ERR/{ printf("%s:%s\n",$2,$3); }'`
else
redis_nodes=`redis-cli --no-auth-warning -a "$REDIS_PASSWORD" -h $REDIS_IP -p $REDIS_PORT cluster nodes | awk -F[\ \:\@] '!/ERR/{ printf("%s:%s\n",$2,$3); }'`
fi
if test -z "$redis_nodes"; then
# Standlone（非集群）
if test -z "$REDIS_PASSWORD"; then
$REDIS_CLI -h $REDIS_IP -p $REDIS_PORT FLUSHALL ASYNC
$REDIS_CLI -h $REDIS_IP -p $REDIS_PORT BGREWRITEAOF
else
$REDIS_CLI --no-auth-warning -a "$REDIS_PASSWORD" -h $REDIS_IP -p $REDIS_PORT FLUSHALL ASYNC
$REDIS_CLI --no-auth-warning -a "$REDIS_PASSWORD" -h $REDIS_IP -p $REDIS_PORT BGREWRITEAOF
fi
else
# Cluster（集群）
for redis_node in $redis_nodes;
do
if test ! -z "$redis_node"; then
eval $(echo "$redis_node" | awk -F[\:] '{ printf("redis_node_ip=%s\nredis_node_port=%s\n",$1,$2) }')
if test ! -z "$redis_node_ip" -a ! -z "$redis_node_port"; then
# clear
echo -e "Clearing \033[1;33m${redis_node_ip}:${redis_node_port}\033[m ..."
if test -z "$REDIS_PASSWORD"; then
result=`$REDIS_CLI -h $redis_node_ip -p $redis_node_port FLUSHALL ASYNC`
$REDIS_CLI -h $redis_node_ip -p $redis_node_port BGREWRITEAOF
else
result=`$REDIS_CLI --no-auth-warning -a "$REDIS_PASSWORD" -h $redis_node_ip -p $redis_node_port FLUSHALL ASYNC`
$REDIS_CLI --no-auth-warning -a "$REDIS_PASSWORD" -h $redis_node_ip -p $redis_node_port BGREWRITEAOF
fi
if test ! -z "$result"; then
# SUCCESS
if test "$result" = "OK"; then
echo -e "\033[0;32;32m$result\033[m"
else
echo -e "\033[0;32;31m$result\033[m"
fi
fi
fi
fi
done
fi
這位仁兄的腳本寫的特別好。直接執(zhí)行即可。
2.3 確認(rèn)刪除成功
使用redis工具查看：
3.清理單機(jī)redis
4.總結(jié)
使用腳本刪除redis集群中的數(shù)據(jù)。
記得地址哦：
https://github.com/eyjian/redis-tools/blob/master/clear_redis_cluster.sh
到此這篇關(guān)于詳解如何清理redis集群的所有數(shù)據(jù)的文章就介紹到這了,更多相關(guān)清理redis集群數(shù)據(jù)內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！
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