ElasticSearch Errors

ElasticSearch Errors

1. The most prominent issue I experienced was this:

` – Unit elasticsearch.service has begun starting up.
Jul 27 09:03:45 vagrant systemd[1]: elasticsearch.service: Start operation timed out. Terminating. Jul 27 09:03:46 vagrant systemd[1]: elasticsearch.service: Failed with result ‘timeout’. Jul 27 09:03:46 vagrant systemd[1]: Failed to start Elasticsearch. -- Subject: Unit elasticsearch.service has failed -- Defined-By: systemd
-- Support: http://www.ubuntu.com/support --
-- Unit elasticsearch.service has failed. --
-- The result is RESULT.
`

Timeout error, well the timeout for elasticsearch initiation is given as 1 minutes or something, which is not really enough to fix that we gotta modify the entry. Create service drop-in configuration directory.

$ sudo mkdir /etc/systemd/system/elasticsearch.service.d Then echo -e "[Service]\nTimeoutStartSec=300" | sudo tee /etc/systemd/system/elasticsearch.service.d/startup-timeout.conf After that, Reload systemd manager configuration.

$ sudo systemctl daemon-reload

Verify ` sudo systemctl show elasticsearch | grep ^Timeout and then restart by: sudo systemctl start elasticsearch` This fixes it, and ofc you must check the journalctl -xe to make sure its the same error.

I like this quote: “The result is result xD”

    ~Systemd

For renaming your index you can use Elasticsearch Snapshot module.

First you have to take snapshot of your index.while restoring it you can rename your index.

    POST /_snapshot/my_backup/snapshot_1/_restore
    {
     "indices": "jal",
     "ignore_unavailable": "true",
     "include_global_state": false,
     "rename_pattern": "jal",
     "rename_replacement": "jal1"
     }

rename_replacement :-New indexname in which you want backup your data.