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A bash script that scans Redis keys by pattern using SCAN
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| #!/usr/bin/env bash | |
| # redis-scan.sh | |
| # | |
| # Adapted by @obscurerichard from itamarhaber/scan_del.sh: | |
| # https://gist.github.com/itamarhaber/11126830 | |
| # | |
| # Thanks @czerasz and @tenlee2012 for fixes | |
| # | |
| # Usage: | |
| # ./redis-scan.sh localhost 6378 0 '*test*' | |
| # | |
| # NOTE: if your redis-cli supports '--scan' use that instead, thanks @ferico | |
| # | |
| # redis-cli --scan --pattern '*' | |
| # | |
| if [ "$#" -lt 2 ] | |
| then | |
| echo "Scan keys in Redis matching a pattern using SCAN (safe version of KEYS)" | |
| echo "Usage: $0 <host> [port] [database] [pattern]" | |
| exit 1 | |
| fi | |
| host=${1:-} | |
| port=${2:-6379} | |
| database=${3:-0} | |
| pattern=${4:-\*} | |
| cursor=-1 | |
| keys="" | |
| echo "host=${host},port=${port},database=${database}" | |
| while [[ "$cursor" -ne 0 ]]; do | |
| if [[ "$cursor" -eq -1 ]] | |
| then | |
| cursor=0 | |
| fi | |
| reply=$(redis-cli -h "$host" -p "$port" -n "$database" SCAN "$cursor" MATCH "$pattern") | |
| cursor=$(expr "$reply" : '\([0-9]*[0-9 ]\)') | |
| keys=${reply//$cursor/} | |
| if [ -n "$keys" ]; then | |
| echo "$keys" | |
| fi | |
| done |
what about redis-cli --scan --pattern '*'?
@farico much better! And easier 👍
#!/bin/bash
if [ "$#" -lt 2 ]
then
echo "Scan keys in Redis matching a pattern using SCAN (safe version of KEYS)"
echo "Usage: $0 <host> [port] [database] [pattern]"
exit 1
fi
host=${1:-}
port=${2:-6379}
database=${3:-0}
pattern=${4:-\*}
cursor=-1
keys=""
echo "host=${host},port=${port},database=${database}"
while [[ "$cursor" -ne 0 ]]; do
if [[ "$cursor" -eq -1 ]]
then
cursor=0
fi
reply=$(redis-cli -h "$host" -p "$port" -n "$database" SCAN "$cursor" MATCH "$pattern")
cursor=$(expr "$reply" : '\([0-9]*[0-9 ]\)')
#keys=${reply##[0-9]*[0-9 ]}
keys=${reply//$cursor/}
if [ -n "$keys" ]; then
echo $keys
fi
#echo $keys
doneuse
./redis-scan.sh localhost 6378 0 *test*
Tried many modifications and it seems only scan is working and delete is not properly executed. After rescan the keys still existing
Tried many modifications and it seems only scan is working and delete is not properly executed. After rescan the keys still existing
redis-cli -h xxxxxx -a 'xxxxxx' -n 0 -p 6379 --scan --pattern 'xxxxxx*' | xargs -L 2000 redis-cli -h xxxxxx -a 'xxxxxx' -n 0 -p 6379 del
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Small fix which worked for me: