New in version 3.1.0.
After upgrading Wazuh from 2.x to 3.x, your old alerts will not be lost, however, they cannot be visualized in Kibana due to a change in the Wazuh alerts’ template. In order to access the old alerts and visualize them along with the new ones, the indices need to be reindexed to apply the new mapping.
# curl -so restore_alerts.sh https://raw.githubusercontent.com/wazuh/wazuh/master/extensions/elasticsearch/restore_alerts/restore_alerts.sh # curl -so restore_alerts.conf https://raw.githubusercontent.com/wazuh/wazuh/master/extensions/elasticsearch/restore_alerts/restore_alerts.conf
Once the script and the configuration file are downloaded, you can restore your Wazuh alerts in two different ways:
by restoring them from Elasticsearch to index them in Elasticsearch, or
by restoring from your Wazuh’s manager to index them in Elasticsearch.
# systemctl stop logstash
restore_alerts.shscript as superuser to reindex your old Wazuh alerts.
The script needs Logstash to be installed on the same machine. If the script can’t find Logstash, it will install Logstash in order to complete the task. After the reindex has finished, you can then uninstall Logstash.
Insert the requested parameters into the prompts from the script as defined below :
reindex_type: Store what kind of reindex do you want. It could be: -
ELS2ELS: from Elasticsearch to Elasticsearch. -
WM2ELS: from Wazuh’s manager to Elasticsearch.
elastic_ip: Is the Elasticsearch IP address. By default, this is set to is localhost.
dateFrom: starting date as YYYY-MM-DD (2017-12-01).
dateTo: end date as YYYY-MM-DD (2017-12-11).
If you want to reindex only a single day, set
dateTo to the same date.
Also, you can execute the script adding the values for the parameters as arguments:
# ./restore_alerts.sh date_from(yyyy-mm-dd) date_to(yyyy-mm-dd) elasticsearch_ip ELS2ELS|WM2ELS
Once the script has finished, you can start Logstash again:
# systemctl start logstash
Once the reindex of your alerts has finished, you can confirm that it was successful by asking Elasticsearch about the indices.
# curl "http://localhost:9200/_cat/indices?v"
If everything worked well, the output will appear something like this:
# curl "http://localhost:9200/_cat/indices?v" health status index uuid pri rep docs.count docs.deleted store.size pri.store.size green open wazuh-alerts-3.x-2017.12.12 vQ4YXsTuQLSDMnLk_Lp2Kw 5 1 58 0 115.1kb 115.1kb green open .kibana-6 0jtvjQ4ERLmkKbCJ7Pl4Ww 1 1 241 110 226.5kb 226.5kb green open .wazuh-version AqVHhREjSgCpx07LJ45Dkg 5 1 1 0 7.1kb 7.1kb green open wazuh-alerts-2017.12.12 T3SZQRHGQEOBbVi79nDmhg 5 1 58 0 239.2kb 239.2kb green open .wazuh GV7tVKXsSb-BocyjxC07Iw 5 1 0 0 1.2kb 1.2kb