new: [hashlookup-server] initial import of the code

- This includes a simple HTTP server for doing bulk and lookup of hashes.
- A simple DNS server to do lookup via DNS
- Various import script for NSRL

This works on a test instance.

TODO:

- Automatic script for NSRL download and import
- Bloomfilter export
- Improved documentation
This commit is contained in:
Alexandre Dulaunoy 2021-07-15 17:49:52 +02:00
commit a4b3b7ba60
Signed by: adulau
GPG key ID: 09E2CD4944E6CBCD
14 changed files with 1726 additions and 0 deletions

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# hashlookup-server
hashlookup-server is a minimal and fast open source server (ReST/API) to lookup quickly hash value from large dataset.
The code was quickly written during some boring meetings. The code is still alpha and installation documentation is missing. I released it for the adventurous people
who love to dig into new experimental projects.
# Features
- ReST API to lookup MD5 and SHA-1 hashes or bulk search from large dataset
- A simple DNS server to provide hash lookup via DNS queries
- Import scripts for the [NSRL database](https://www.nist.gov/itl/ssd/software-quality-group/national-software-reference-library-nsrl)
# Requirements
The server requires a recent version of Python (Python 3.6 or better) and a [kvrocks](https://github.com/KvrocksLabs/kvrocks) database.
If you don't want to run your own local server, you can use and test [hashlookup.circl.lu](https://hashlookup.circl.lu/).
## Public Online version - CIRCL hashlookup (hashlookup.circl.lu)
[CIRCL hash lookup](https://hashlookup.circl.lu/) is a public API to lookup hash values against known database of files. NSRL RDS database is included. More database will be included in the future. The API is accessible via HTTP ReST API and the API is also [described as an OpenAPI](https://hashlookup.circl.lu/swagger.json).
# Is it a database of malicious or non-malicious hash of files?
CIRCL hashlookup service only gives details about known files appearing in specific database(s). This gives you context and information about file hashes which can be discovered during investigation or digital forensic analysis.
# API Usage
## Get information about the hash lookup database (via ReST)
~~~
curl -X 'GET' \
'https://hashlookup.circl.lu/info' \
-H 'accept: application/json'
~~~
~~~json
{
"nsrl-version": "RDS Verion 2.73.1 - July 2021",
"nsrl-NSRL-items": "165968856",
"nsrl-NSRL-Legacy-items": "113737918",
"nsrl-Android-items": "33419323",
"nsrl-iOS-items": "46447082",
"nsrl-NSRLMfg": "92353",
"nsrl-NSRLOS": "1331",
"nsrl-NSRLProd": "19050",
"hashlookup-version": "1.0"
}
~~~
## Perform an MD5 hash lookup
~~~
curl -X 'GET' \
'https://hashlookup.circl.lu/lookup/md5/8ED4B4ED952526D89899E723F3488DE4' \
-H 'accept: application/json'
~~~
~~~json
{
"CRC32": "7A5407CA",
"FileName": "wow64_microsoft-windows-i..timezones.resources_31bf3856ad364e35_10.0.16299.579_de-de_f24979c73226184d.manifest",
"FileSize": "2520",
"MD5": "8ED4B4ED952526D89899E723F3488DE4",
"OpSystemCode": {
"MfgCode": "1006",
"OpSystemCode": "362",
"OpSystemName": "TBD",
"OpSystemVersion": "none"
},
"ProductCode": {
"ApplicationType": "Security",
"Language": "Multilanguage",
"MfgCode": "608",
"OpSystemCode": "868",
"ProductCode": "190742",
"ProductName": "Cumulative Update for Windows Server 2016 for x64 (KB4338817)",
"ProductVersion": "1709"
},
"SHA-1": "00000079FD7AAC9B2F9C988C50750E1F50B27EB5",
"SpecialCode": ""
}
~~~
## Perform an SHA-1 hash lookup
~~~
curl -X 'GET' 'https://hashlookup.circl.lu/lookup/sha1/FFFFFDAC1B1B4C513896C805C2C698D9688BE69F' -H 'accept: application/json' | jq .
~~~
~~~json
{
"CRC32": "CBD64CD9",
"FileName": ".rela.dyn",
"FileSize": "240",
"MD5": "131312A96CAD4ACAA7E2631A34A0D47C",
"OpSystemCode": {
"MfgCode": "1006",
"OpSystemCode": "362",
"OpSystemName": "TBD",
"OpSystemVersion": "none"
},
"ProductCode": {
"ApplicationType": "Operating System",
"Language": "English",
"MfgCode": "1722",
"OpSystemCode": "599",
"ProductCode": "163709",
"ProductName": "BlackArch Linux",
"ProductVersion": "2017.03.01"
},
"SHA-1": "FFFFFDAC1B1B4C513896C805C2C698D9688BE69F",
"SpecialCode": ""
}
~~~
## Bulk search of MD5 hashes
~~~
curl -X 'POST' 'https://hashlookup.circl.lu/bulk/md5' -H "Content-Type: application/json" -d "{\"hashes\": [\"6E2F8616A01725DCB37BED0A2495AEB2\", \"8ED4B4ED952526D89899E723F3488DE4\", \"344428FA4BA313712E4CA9B16D089AC4\"]}" | jq .
~~~
~~~json
[
{
"CRC32": "E774FD92",
"FileName": "network",
"FileSize": "7279",
"MD5": "6E2F8616A01725DCB37BED0A2495AEB2",
"OpSystemCode": "362",
"ProductCode": "8321",
"SHA-1": "00000903319A8CE18A03DFA22C07C6CA43602061",
"SpecialCode": ""
},
{
"CRC32": "7A5407CA",
"FileName": "wow64_microsoft-windows-i..timezones.resources_31bf3856ad364e35_10.0.16299.579_de-de_f24979c73226184d.manifest",
"FileSize": "2520",
"MD5": "8ED4B4ED952526D89899E723F3488DE4",
"OpSystemCode": "362",
"ProductCode": "190742",
"SHA-1": "00000079FD7AAC9B2F9C988C50750E1F50B27EB5",
"SpecialCode": ""
},
{
"CRC32": "7516A25F",
"FileName": ".text._ZNSt14overflow_errorC1ERKSs",
"FileSize": "33",
"MD5": "344428FA4BA313712E4CA9B16D089AC4",
"OpSystemCode": "362",
"ProductCode": "219181",
"SHA-1": "0000001FFEF4BE312BAB534ECA7AEAA3E4684D85",
"SpecialCode": ""
}
]
~~~
# Bulk search of SHA-1 hashes
~~~
curl -X 'POST' 'https://hashlookup.circl.lu/bulk/sha1' -H "Content-Type: application/json" -d "{\"hashes\": [\"FFFFFDAC1B1B4C513896C805C2C698D9688BE69F\", \"FFFFFF4DB8282D002893A9BAF00E9E9D4BA45E65\", \"FFFFFE4C92E3F7282C7502F1734B243FA52326FB\"]}" | jq .
~~~
~~~json
[
{
"CRC32": "CBD64CD9",
"FileName": ".rela.dyn",
"FileSize": "240",
"MD5": "131312A96CAD4ACAA7E2631A34A0D47C",
"OpSystemCode": "362",
"ProductCode": "163709",
"SHA-1": "FFFFFDAC1B1B4C513896C805C2C698D9688BE69F",
"SpecialCode": ""
},
{
"CRC32": "8654F11A",
"FileName": "s_copypix.c",
"FileSize": "19541",
"MD5": "559D049F44942683093A91BA19D0AF54",
"OpSystemCode": "362",
"ProductCode": "215139",
"SHA-1": "FFFFFF4DB8282D002893A9BAF00E9E9D4BA45E65",
"SpecialCode": ""
},
{
"CRC32": "8E51A269",
"FileName": "358.git2-msvstfs.dll",
"FileSize": "65",
"MD5": "9E4C165089CBA3653484C3F23F1CBC67",
"OpSystemCode": "362",
"ProductCode": "201317",
"SHA-1": "FFFFFE4C92E3F7282C7502F1734B243FA52326FB",
"SpecialCode": ""
}
]
~~~
## API and HTTP return codes
|HTTP return code | Description and Interpretation|
|---|---|
|200| 200 means the searched hash is present in at least one of the database|
|404| 404 means the searched hash is not present in the any of the database|
|400| 400 means the input used for the hash is in an incorrect format|
# Querying the hashlookup database via DNS
The domain to query is `<query>.dns.hashlookup.circl.lu`. The query can be `info` or an MD5 or SHA-1 value.
## Info of the hashlookup database
```
dig +short -t TXT info.dns.hashlookup.circl.lu | jq -r . | jq .
```
~~~json
{
"nsrl-version": "RDS Verion 2.73.1 - July 2021",
"nsrl-NSRL-items": "165968856",
"nsrl-Android-items": "33419323",
"nsrl-iOS-items": "46447082",
"nsrl-NSRLMfg": "543004",
"nsrl-NSRLOS": "6414",
"nsrl-NSRLProd": "333546",
"hashlookup-version": "0.1"
}
~~~
## Query of a hash
```
dig +short -t TXT 931606baaa7a2b4ef61198406f8fc3f4.dns.hashlookup.circl.lu | jq -r . | jq .
```
~~~json
{
"CRC32": "13C49389",
"FileName": "ls",
"FileSize": "133792",
"MD5": "931606BAAA7A2B4EF61198406F8FC3F4",
"OpSystemCode": "362",
"ProductCode": "217853",
"SHA-1": "D3A21675A8F19518D8B8F3CEF0F6A21DE1DA6CC7",
"SpecialCode": ""
}
~~~
# Sample digital forensic use-cases
## How to quickly check a set of files in a local directory?
```
sha1sum * | cut -f1 -d" " | parallel 'curl -s https://hashlookup.circl.lu/lookup/sha1/{}' | jq .
```
Negative output (hash not existing in the database) can be excluded with the `-f` option of `curl`.
```
sha1sum * | cut -f1 -d" " | parallel 'curl -f -s https://hashlookup.circl.lu/lookup/sha1/{}' | jq .
```
## Libraries and Software available which use CIRCL hashlookup
- [PyHashlookup](https://github.com/CIRCL/PyHashlookup) is a client API in Python to query CIRCL hashlookup.
- [The Hive Project - Cortex Analyzers](https://github.com/TheHive-Project/Cortex-Analyzers/pull/1015) pull-request to be integrated in The Hive Cortex Analyzers.
# License
This software is licensed under GNU Affero General Public License version 3.
- Copyright (C) 2021 CIRCL - Computer Incident Response Center Luxembourg
- Copyright (C) 2021 Alexandre Dulaunoy

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import sys
import redis
rdb = redis.Redis(host='127.0.0.1', port='6666', decode_responses=True)
lines = open('../data/NSRLFile.txt', 'r')
ln = 0
rdb.delete("stat:NSRLAndroid")
rdb.set("stat:NSRLAndroid", 0)
maxvalue = 5000000000
for l in lines:
if ln == 0:
headers = l.rstrip().replace("\"","").split(",")
print (headers)
else:
records = l.rstrip().replace("\"","").split(",")
drecords = {}
for index, value in enumerate(records):
try:
drecords[headers[index]] = value
except:
continue
print(drecords)
print(drecords['SHA-1'])
rdb.set("l:{}".format(drecords['MD5']), drecords['SHA-1'])
rdb.hmset("h:{}".format(drecords['SHA-1']), drecords)
rdb.incrby("stat:NSRLAndroid")
if ln == maxvalue:
sys.exit(1)
ln = ln + 1

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import sys
import redis
rdb = redis.Redis(host='127.0.0.1', port='6666', decode_responses=True)
lines = open('../data/NSRLMfg.txt', 'r')
ln = 0
#rdb.delete("stat:NSRLMfg-import")
maxvalue = 500000000
for l in lines:
if ln == 0:
headers = l.rstrip().replace("\"","").split(",")
print (headers)
else:
records = l.rstrip().replace("\"","").split(",")
drecords = {}
for index, value in enumerate(records):
try:
drecords[headers[index]] = value
except:
continue
print(drecords)
print(drecords['MfgCode'])
rdb.sadd('s:MfgCode', drecords['MfgCode'])
rdb.hmset("h-MfgCode:{}".format(drecords['MfgCode']), drecords)
rdb.incrby("stat:NSRLMfg-import")
if ln == maxvalue:
sys.exit(1)
ln = ln + 1

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import sys
import redis
rdb = redis.Redis(host='127.0.0.1', port='6666', decode_responses=True)
lines = open('../data/NSRLOS.txt', 'r')
ln = 0
#rdb.delete("stat:NSRLOS-import")
maxvalue = 500000000
for l in lines:
if ln == 0:
headers = l.rstrip().replace("\"","").split(",")
print (headers)
else:
records = l.rstrip().replace("\"","").split(",")
drecords = {}
for index, value in enumerate(records):
try:
drecords[headers[index]] = value
except:
continue
print(drecords)
print(drecords['OpSystemCode'])
rdb.sadd('s:OpSystemCode', drecords['OpSystemCode'])
rdb.hmset("h-OpSystemCode:{}".format(drecords['OpSystemCode']), drecords)
rdb.incrby("stat:NSRLOS-import")
if ln == maxvalue:
sys.exit(1)
ln = ln + 1

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import sys
import redis
rdb = redis.Redis(host='127.0.0.1', port='6666', decode_responses=True)
lines = open('../data/NSRLProd.txt', 'r')
ln = 0
#rdb.delete("stat:NSRLProd-import")
maxvalue = 500000000
for l in lines:
if ln == 0:
headers = l.rstrip().replace("\"","").split(",")
print (headers)
else:
records = l.rstrip().replace("\"","").split(",")
drecords = {}
for index, value in enumerate(records):
try:
drecords[headers[index]] = value
except:
continue
print(drecords)
print(drecords['ProductCode'])
rdb.sadd('s:ProductCode', drecords['ProductCode'])
rdb.hmset("h-ProductCode:{}".format(drecords['ProductCode']), drecords)
rdb.incrby("stat:NSRLProd-import")
if ln == maxvalue:
sys.exit(1)
ln = ln + 1

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import sys
import redis
rdb = redis.Redis(host='127.0.0.1', port='6666', decode_responses=True)
lines = open('../data/rds241-sha256.txt', 'r')
ln = 0
rdb.delete("stat:NSRLsha256-import")
maxvalue = 500000000
headers = ['SHA-1', 'SHA-256', 'filename']
for l in lines:
records = l.rstrip().split("\t")
drecords = {}
for index, value in enumerate(records):
try:
drecords[headers[index]] = value
except:
continue
print(drecords)
print(drecords['SHA-1'])
#rdb.hmset("h-ProductCode:{}".format(drecords['ProductCode']), drecords)
rdb.incrby("stat:NSRLsha256-import")
if ln == maxvalue:
sys.exit(1)
ln = ln + 1

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import sys
import redis
rdb = redis.Redis(host='127.0.0.1', port='6666', decode_responses=True)
lines = open('../data/xcyclopedia/strontic-xcyclopedia.csv', 'r')
ln = 0
rdb.delete("stat:xcyclopedia-import")
maxvalue = 5000000000
for l in lines:
if ln == 0:
headers = l.rstrip().replace("\"","").split(",")
print (headers)
else:
records = l.rstrip().replace("\"","").split(",")
drecords = {}
for index, value in enumerate(records):
try:
drecords[headers[index]] = value
except:
continue
print(drecords)
print(drecords['hash_md5'])
#rdb.set("l:{}".format(drecords['hash_md5']), drecords['hash_sha1'])
#rdb.hmset("h:{}".format(drecords['hash_sha1']), drecords)
#rdb.incrby("stat:xcyclopedia-import")
if ln == maxvalue:
sys.exit(1)
ln = ln + 1

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#!/bin/sh
git clone --recursive https://github.com/bitleak/kvrocks.git
cd kvrocks
git checkout 2.0
make -j4

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ulimit -n 700000
./kvrocks/src/kvrocks -c ../etc/kvrocks.conf

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version = "1.0"
from flask import Flask, url_for, send_from_directory, render_template, make_response, request
from flask_restx import Resource, Api, reqparse
import redis
app = Flask(__name__)
app.url_map.strict_slashes = False
api = Api(app, version=version, title='hashlookup CIRCL API', description='![](https://www.circl.lu/assets/images/circl-logo.png)\n[CIRCL hash lookup](https://hashlookup.circl.lu/) is a public API to lookup hash values against known database of files. NSRL RDS database is included. More database will be included in the future. The API is accessible via HTTP ReST API and the API is also [described as an OpenAPI](https://hashlookup.circl.lu/swagger.json). A [documentation is available with](https://www.circl.lu/services/hashlookup/) some sample queries. The API can be tested live in the interface below.', doc='/', license='CC-BY', contact='info@circl.lu', ordered=True)
rdb = redis.Redis(host='127.0.0.1', port='6666', decode_responses=True)
def is_hex(s):
try:
int(s, 16)
return True
except ValueError:
return False
@api.route('/lookup/md5/<string:md5>')
@api.doc(description="Lookup MD5.")
class lookup(Resource):
def get(self, md5):
if md5 is None or len(md5) != 32:
return {'message': 'Expecting a MD5 hex value'}, 400
if not is_hex(md5):
return {'message': 'MD5 is not in hex format'}, 400
if not rdb.exists("l:{}".format(md5.upper())):
return {'message': 'Non existing MD5', 'query': md5}, 404
sha1 = rdb.get("l:{}".format(md5.upper()))
h = rdb.hgetall("h:{}".format(sha1))
if "OpSystemCode" in h:
if rdb.exists("h-OpSystemCode:{}".format(h['OpSystemCode'])):
h['OpSystemCode'] = rdb.hgetall("h-OpSystemCode:{}".format(h['OpSystemCode']))
if "ProductCode" in h:
if rdb.exists("h-ProductCode:{}".format(h['ProductCode'])):
h['ProductCode'] = rdb.hgetall("h-ProductCode:{}".format(h['ProductCode']))
return h
@api.route('/lookup/sha1/<string:sha1>')
@api.doc(description="Lookup SHA-1.")
class lookup(Resource):
def get(self, sha1):
if sha1 is None or len(sha1) != 40:
return {'message': 'Expecting a SHA-1 hex value'}, 400
if not is_hex(sha1):
return {'message': 'SHA-1 is not in hex format'}, 400
if not rdb.exists("h:{}".format(sha1.upper())):
return {'message': 'Non existing SHA-1', 'query': sha1}, 404
h = rdb.hgetall("h:{}".format(sha1.upper()))
if "OpSystemCode" in h:
if rdb.exists("h-OpSystemCode:{}".format(h['OpSystemCode'])):
h['OpSystemCode'] = rdb.hgetall("h-OpSystemCode:{}".format(h['OpSystemCode']))
if "ProductCode" in h:
if rdb.exists("h-ProductCode:{}".format(h['ProductCode'])):
h['ProductCode'] = rdb.hgetall("h-ProductCode:{}".format(h['ProductCode']))
return h
@api.route('/info')
@api.doc(description="Info about the hashlookup database")
class info(Resource):
def get(self):
info = {}
info['nsrl-version'] = rdb.get('nsrl-version')
info['nsrl-NSRL-items'] = rdb.get('stat:import')
info['nsrl-NSRL-Legacy-items'] = rdb.get('stat:NSRLLegacy')
info['nsrl-Android-items'] = rdb.get('stat:NSRLAndroid')
info['nsrl-iOS-items'] = rdb.get('stat:NSRLiOS')
info['nsrl-NSRLMfg'] = str(rdb.scard('s:MfgCode'))
info['nsrl-NSRLOS'] = str(rdb.scard('s:OpSystemCode'))
info['nsrl-NSRLProd'] = str(rdb.scard('s:ProductCode'))
info['hashlookup-version'] = version
return info
@api.route('/bulk/md5')
@api.doc(description="Bulk search of MD5 hashes in a JSON array with the key \'hashes\'.")
class bulkmd5(Resource):
def post(self):
json_data = request.get_json(force=True)
if not 'hashes' in json_data:
return {'message': 'JSON format incorrect. An array of hashes in the key \'hashes\' is expected.'}, 404
ret = []
for val in json_data['hashes']:
if not rdb.exists("l:{}".format(val.upper())):
continue
sha1 = rdb.get("l:{}".format(val.upper()))
ret.append(rdb.hgetall("h:{}".format(sha1)))
return ret
@api.route('/bulk/sha1')
@api.doc(description="Bulk search of SHA1 hashes in a JSON array with the \'hashes\'.")
class bulksha1(Resource):
def post(self):
json_data = request.get_json(force=True)
if not 'hashes' in json_data:
return {'message': 'JSON format incorrect. An array of hashes in the key \'hashes\' is expected.'}, 404
ret = []
for val in json_data['hashes']:
ret.append(rdb.hgetall("h:{}".format(val.upper())))
return ret
if __name__ == '__main__':
app.run(host='0.0.0.0')

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version = "0.1"
from nserver import NameServer, Response, A, NS, TXT
import redis
import json
import re
rdb = redis.Redis(host='127.0.0.1', port='6666', decode_responses=True)
ns = NameServer("dns.hashlookup.circl.lu")
@ns.rule("info.dns.hashlookup.circl.lu", ["TXT"])
def say_info(query):
#if query.name.endswith(".com.au"):
# return TXT(query.name, "G'day mate")
info = {}
info['nsrl-version'] = rdb.get('nsrl-version')
info['nsrl-NSRL-items'] = rdb.get('stat:import')
info['nsrl-Android-items'] = rdb.get('stat:NSRLAndroid')
info['nsrl-iOS-items'] = rdb.get('stat:NSRLiOS')
info['nsrl-NSRLMfg'] = rdb.get('stat:NSRLMfg-import')
info['nsrl-NSRLOS'] = rdb.get('stat:NSRLOS-import')
info['nsrl-NSRLProd'] = rdb.get('stat:NSRLProd-import')
info['hashlookup-version'] = version
return TXT(query.name, json.dumps(info))
@ns.rule("**", ["TXT"])
def wildcard_hashlookup(query):
hashq = query.name.split('.', 1)
print(hashq[0])
if re.findall(r"^[a-fA-F\d]{32}$", hashq[0]):
print("MD5")
sha1 = rdb.get("l:{}".format(hashq[0].upper()))
elif re.findall(r"^[a-fA-F\d]{40}$", hashq[0]):
print("SHA-1")
sha1 = hashq[0].upper()
else:
return Response()
if sha1 is None:
return Response()
if not rdb.exists("h:{}".format(sha1.upper())):
return Response()
h = rdb.hgetall("h:{}".format(sha1))
#if "OpSystemCode" in h:
# if rdb.exists("h-OpSystemCode:{}".format(h['OpSystemCode'])):
# h['OpSystemCode'] = rdb.hgetall("h-OpSystemCode:{}".format(h['OpSystemCode']))
#if "ProductCode" in h:
# if rdb.exists("h-ProductCode:{}".format(h['ProductCode'])):
# h['ProductCode'] = rdb.hgetall("h-ProductCode:{}".format(h['ProductCode']))
return TXT(query.name, json.dumps(h))
if __name__ == "__main__":
ns.settings.SERVER_PORT = 53 # It's over 9000!
ns.settings.SERVER_ADDRESS = "185.194.93.133"
ns.run()

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################################ GENERAL #####################################
# By default kvrocks listens for connections from all the network interfaces
# available on the server. It is possible to listen to just one or multiple
# interfaces using the "bind" configuration directive, followed by one or
# more IP addresses.
#
# Examples:
#
# bind 192.168.1.100 10.0.0.1
bind 127.0.0.1
#bind 0.0.0.0
# Accept connections on the specified port, default is 6666.
port 6666
# Close the connection after a client is idle for N seconds (0 to disable)
timeout 0
# The number of worker's threads, increase or decrease it would effect the performance.
workers 8
# The number of replication worker's threads, increase or decrease it would effect the replication performance.
# Default: 1
repl-workers 1
# By default kvrocks does not run as a daemon. Use 'yes' if you need it.
# Note that kvrocks will write a pid file in /var/run/kvrocks.pid when daemonized.
daemonize no
# Set the max number of connected clients at the same time. By default
# this limit is set to 10000 clients, however if the server is not
# able to configure the process file limit to allow for the specified limit
# the max number of allowed clients is set to the current file limit
#
# Once the limit is reached the server will close all the new connections sending
# an error 'max number of clients reached'.
#
maxclients 10000
# Require clients to issue AUTH <PASSWORD> before processing any other
# commands. This might be useful in environments in which you do not trust
# others with access to the host running kvrocks.
#
# This should stay commented out for backward compatibility and because most
# people do not need auth (e.g. they run their own servers).
#
# Warning: since kvrocks is pretty fast an outside user can try up to
# 150k passwords per second against a good box. This means that you should
# use a very strong password otherwise it will be very easy to break.
#
# requirepass foobared
# If the master is password protected (using the "masterauth" configuration
# directive below) it is possible to tell the slave to authenticate before
# starting the replication synchronization process, otherwise the master will
# refuse the slave request.
#
# masterauth foobared
# Master-Salve replication would check db name is matched. if not, the slave should
# refuse to sync the db from master. Don't use default value, set the db-name to identify
# the cluster.
db-name nsrl
# The working directory
#
# The DB will be written inside this directory
# Note that you must specify a directory here, not a file name.
dir /home/adulau/nsrl/db
# The logs of server will be stored in this directory. If you don't specify
# one directory, by default, we store logs in the working directory that set
# by 'dir' above.
# log-dir /tmp/kvrocks
# When running daemonized, kvrocks writes a pid file in ${CONFIG_DIR}/kvrocks.pid by
# default. You can specify a custom pid file location here.
# pidfile /var/run/kvrocks.pid
pidfile /home/adulau/nsrl/db/kvrocks.pid
# You can configure a slave instance to accept writes or not. Writing against
# a slave instance may be useful to store some ephemeral data (because data
# written on a slave will be easily deleted after resync with the master) but
# may also cause problems if clients are writing to it because of a
# misconfiguration.
slave-read-only yes
# The slave priority is an integer number published by Kvrocks in the INFO output.
# It is used by Redis Sentinel in order to select a slave to promote into a
# master if the master is no longer working correctly.
#
# A slave with a low priority number is considered better for promotion, so
# for instance if there are three slave with priority 10, 100, 25 Sentinel will
# pick the one with priority 10, that is the lowest.
#
# However a special priority of 0 marks the replica as not able to perform the
# role of master, so a slave with priority of 0 will never be selected by
# Redis Sentinel for promotion.
#
# By default the priority is 100.
slave-priority 100
# TCP listen() backlog.
#
# In high requests-per-second environments you need an high backlog in order
# to avoid slow clients connections issues. Note that the Linux kernel
# will silently truncate it to the value of /proc/sys/net/core/somaxconn so
# make sure to raise both the value of somaxconn and tcp_max_syn_backlog
# in order to Get the desired effect.
tcp-backlog 511
# If the master is an old version, it may have specified replication threads
# that use 'port + 1' as listening port, but in new versions, we don't use
# extra port to implement replication. In order to allow the new replicas to
# copy old masters, you should indicate that the master uses replication port
# or not.
# If yes, that indicates master uses replication port and replicas will connect
# to 'master's listening port + 1' when synchronization.
# If no, that indicates master doesn't use replication port and replicas will
# connect 'master's listening port' when synchronization.
master-use-repl-port no
# Master-Slave replication. Use slaveof to make a kvrocks instance a copy of
# another kvrocks server. A few things to understand ASAP about kvrocks replication.
#
# 1) Kvrocks replication is asynchronous, but you can configure a master to
# stop accepting writes if it appears to be not connected with at least
# a given number of slaves.
# 2) Kvrocks slaves are able to perform a partial resynchronization with the
# master if the replication link is lost for a relatively small amount of
# time. You may want to configure the replication backlog size (see the next
# sections of this file) with a sensible value depending on your needs.
# 3) Replication is automatic and does not need user intervention. After a
# network partition slaves automatically try to reconnect to masters
# and resynchronize with them.
#
# slaveof <masterip> <masterport>
# slaveof 127.0.0.1 6379
# When a slave loses its connection with the master, or when the replication
# is still in progress, the slave can act in two different ways:
#
# 1) if slave-serve-stale-data is set to 'yes' (the default) the slave will
# still reply to client requests, possibly with out of date data, or the
# data set may just be empty if this is the first synchronization.
#
# 2) if slave-serve-stale-data is set to 'no' the slave will reply with
# an error "SYNC with master in progress" to all the kind of commands
# but to INFO and SLAVEOF.
#
slave-serve-stale-data yes
# To guarantee slave's data safe and serve when it is in full synchronization
# state, slave still keep itself data. But this way needs to occupy much disk
# space, so we provide a way to reduce disk occupation, slave will delete itself
# entire database before fetching files from master during full synchronization.
# If you want to enable this way, you can set 'slave-delete-db-before-fullsync'
# to yes, but you must know that database will be lost if master is down during
# full synchronization, unless you have a backup of database.
#
# This option is similar redis replicas RDB diskless load option:
# repl-diskless-load on-empty-db
#
# Default: no
slave-empty-db-before-fullsync no
# If replicas need full synchronization with master, master need to create
# checkpoint for feeding replicas, and replicas also stage a checkpoint of
# the master. If we also keep the backup, it maybe occupy extra disk space.
# You can enable 'purge-backup-on-fullsync' if disk is not sufficient, but
# that may cause remote backup copy failing.
#
# Default: no
purge-backup-on-fullsync no
# The maximum allowed rate (in MB/s) that should be used by Replication.
# If the rate exceeds max-replication-mb, replication will slow down.
# Default: 0 (i.e. no limit)
max-replication-mb 0
# The maximum allowed aggregated write rate of flush and compaction (in MB/s).
# If the rate exceeds max-io-mb, io will slow down.
# 0 is no limit
# Default: 500
max-io-mb 500
# The maximum allowed space (in GB) that should be used by RocksDB.
# If the total size of the SST files exceeds max_allowed_space, writes to RocksDB will fail.
# Please see: https://github.com/facebook/rocksdb/wiki/Managing-Disk-Space-Utilization
# Default: 0 (i.e. no limit)
max-db-size 0
# The maximum backup to keep, server cron would run every minutes to check the num of current
# backup, and purge the old backup if exceed the max backup num to keep. If max-backup-to-keep
# is 0, no backup would be keep. But now, we only support 0 or 1.
max-backup-to-keep 1
# The maximum hours to keep the backup. If max-backup-keep-hours is 0, wouldn't purge any backup.
# default: 1 day
max-backup-keep-hours 24
# Ratio of the samples would be recorded when the profiling was enabled.
# we simply use the rand to determine whether to record the sample or not.
#
# Default: 0
profiling-sample-ratio 0
# There is no limit to this length. Just be aware that it will consume memory.
# You can reclaim memory used by the perf log with PERFLOG RESET.
#
# Default: 256
profiling-sample-record-max-len 256
# profiling-sample-record-threshold-ms use to tell the kvrocks when to record.
#
# Default: 100 millisecond
profiling-sample-record-threshold-ms 100
################################## SLOW LOG ###################################
# The Kvrocks Slow Log is a system to log queries that exceeded a specified
# execution time. The execution time does not include the I/O operations
# like talking with the client, sending the reply and so forth,
# but just the time needed to actually execute the command (this is the only
# stage of command execution where the thread is blocked and can not serve
# other requests in the meantime).
#
# You can configure the slow log with two parameters: one tells Kvrocks
# what is the execution time, in microseconds, to exceed in order for the
# command to get logged, and the other parameter is the length of the
# slow log. When a new command is logged the oldest one is removed from the
# queue of logged commands.
# The following time is expressed in microseconds, so 1000000 is equivalent
# to one second. Note that -1 value disables the slow log, while
# a value of zero forces the logging of every command.
slowlog-log-slower-than 100000
# There is no limit to this length. Just be aware that it will consume memory.
# You can reclaim memory used by the slow log with SLOWLOG RESET.
slowlog-max-len 128
# If you run kvrocks from upstart or systemd, kvrocks can interact with your
# supervision tree. Options:
# supervised no - no supervision interaction
# supervised upstart - signal upstart by putting kvrocks into SIGSTOP mode
# supervised systemd - signal systemd by writing READY=1 to $NOTIFY_SOCKET
# supervised auto - detect upstart or systemd method based on
# UPSTART_JOB or NOTIFY_SOCKET environment variables
# Note: these supervision methods only signal "process is ready."
# They do not enable continuous liveness pings back to your supervisor.
supervised no
################################## CRON ###################################
# Compact Scheduler, auto compact at schedule time
# time expression format is the same as crontab(currently only support * and int)
# e.g. compact-cron 0 3 * * * 0 4 * * *
# would compact the db at 3am and 4am everyday
# compact-cron 0 3 * * *
# The hour range that compaction checker would be active
# e.g. compaction-checker-range 0-7 means compaction checker would be worker between
# 0-7am every day.
compaction-checker-range 0-7
# Bgsave scheduler, auto bgsave at schedule time
# time expression format is the same as crontab(currently only support * and int)
# e.g. bgsave-cron 0 3 * * * 0 4 * * *
# would bgsave the db at 3am and 4am everyday
################################ ROCKSDB #####################################
# Specify the capacity of metadata column family block cache. Larger block cache
# may make request faster while more keys would be cached. Max Size is 200*1024.
# Default: 2048MB
rocksdb.metadata_block_cache_size 2048
# Specify the capacity of subkey column family block cache. Larger block cache
# may make request faster while more keys would be cached. Max Size is 200*1024.
# Default: 2048MB
rocksdb.subkey_block_cache_size 2048
# Number of open files that can be used by the DB. You may need to
# increase this if your database has a large working set. Value -1 means
# files opened are always kept open. You can estimate number of files based
# on target_file_size_base and target_file_size_multiplier for level-based
# compaction. For universal-style compaction, you can usually set it to -1.
# Default: 4096
rocksdb.max_open_files 8096
# Amount of data to build up in memory (backed by an unsorted log
# on disk) before converting to a sorted on-disk file.
#
# Larger values increase performance, especially during bulk loads.
# Up to max_write_buffer_number write buffers may be held in memory
# at the same time,
# so you may wish to adjust this parameter to control memory usage.
# Also, a larger write buffer will result in a longer recovery time
# the next time the database is opened.
#
# Note that write_buffer_size is enforced per column family.
# See db_write_buffer_size for sharing memory across column families.
# default is 64MB
rocksdb.write_buffer_size 16
# Target file size for compaction, target file size for Leve N can be caculated
# by target_file_size_base * (target_file_size_multiplier ^ (L-1))
#
# Default: 128MB
rocksdb.target_file_size_base 16
# The maximum number of write buffers that are built up in memory.
# The default and the minimum number is 2, so that when 1 write buffer
# is being flushed to storage, new writes can continue to the other
# write buffer.
# If max_write_buffer_number > 3, writing will be slowed down to
# options.delayed_write_rate if we are writing to the last write buffer
# allowed.
rocksdb.max_write_buffer_number 4
# Maximum number of concurrent background compaction jobs, submitted to
# the default LOW priority thread pool.
rocksdb.max_background_compactions 4
# Maximum number of concurrent background memtable flush jobs, submitted by
# default to the HIGH priority thread pool. If the HIGH priority thread pool
# is configured to have zero threads, flush jobs will share the LOW priority
# thread pool with compaction jobs.
rocksdb.max_background_flushes 4
# This value represents the maximum number of threads that will
# concurrently perform a compaction job by breaking it into multiple,
# smaller ones that are run simultaneously.
# Default: 2 (i.e. no subcompactions)
rocksdb.max_sub_compactions 2
# We impl the repliction with rocksdb WAL, it would trigger full sync when the seq was out of range.
# wal_ttl_seconds and wal_size_limit_mb would affect how archived logswill be deleted.
# If WAL_ttl_seconds is not 0, then WAL files will be checked every WAL_ttl_seconds / 2 and those that
# are older than WAL_ttl_seconds will be deleted#
#
# Default: 3 Hours
rocksdb.wal_ttl_seconds 10800