Ahmia index

Ahmia search engine uses Elasticsearch 2.4 or 5.4.3 to index content.

Installation

Please install elastic search from the official repository. Elasticsearch 2.4 and 5.x both work.

Configuration

Default configuration is enough to run index in dev mode. Here is suggestion for a more secure configuration

/etc/security/limits.conf

elasticsearch - nofile unlimited
elasticsearch - memlock unlimited

/etc/default/elasticsearch

on CentOS/RH: /etc/sysconfig/elasticsearch

ES_HEAP_SIZE=3g # For ES 2.4! Half of your memory, other half is for Lucene
MAX_OPEN_FILES=1065535
MAX_LOCKED_MEMORY=unlimited

For ES 5.4.3 /etc/elasticsearch/jvm.options

# For ES 5.4.3! Half of your memory, other half is for Lucene
-Xms3g
-Xmx3g

/etc/elasticsearch/elasticsearch.yml

bootstrap.mlockall: true # For ES 2.4!
script.engine.groovy.inline.update: on
script.engine.groovy.inline.aggs: on

Start the service

# systemctl start elasticsearch

Init mappings

Please do this when running for the first time

$ curl -XPUT -i "localhost:9200/crawl/" -d "@./mappings.json"
# If ES 5.x
$ curl -XPUT "localhost:9200/_cluster/settings" -d '{
    "transient" : {
        "script.max_compilations_per_minute" : 200
    }
}'

Crontab for Auto Blacklisting of Child Abuse Websites (torsocks required)

0 22 * * * cd /your/ahmia/folder/ && torsocks python child_abuse_onions.py > filter_these_domains.txt && bash call_filtering.sh

mdhash / ahmia-index