Need to Change Data Store Path in Nagios Log Server?

At Bobcares, we often get requests from our customers for assistance regarding this setup as a part of our Server Management Services.

Today let’s see how our Expert Support Techs get this done with a few quick and easy steps.

How to Change Data Store Path in Nagios Log Server?

In this article, let us see how to change the data store path from its default location in Nagios Log Server.

Nagios Log Server allows us to set the data path in which we like to store the data.

The default location is /usr/local/nagioslogserver/elasticsearch/data/, however we can change the path as per our requirement.

Steps to follow are given below

1. Stopping Elasticsearch

First, we need to stop elasticsearch service in this instance.

Open a terminal session to Nagios Log Server instance and execute the command given below:

RHEL 6|CentOS 6|Oracle Linux 6|Ubuntu 14

service elasticsearch stop

RHEL 7|CentOS 7|Oracle Linux 7|Debian|Ubuntu 16/18

systemctl stop elasticsearch.service

2. Then configure New Path Permissions

We need to ensure that the ownership and permissions are correctly given.

Here we are using  /new/path/data as the new location.

chown -R nagios:nagios /new/path/data
chmod -R 0775 /new/path/data

3. After that Change the Path

For changing the configuration to point Nagios Log Server to the new data path.

First, open the file /etc/sysconfig/elasticsearch using vi editor:

RHEL|CentOS|Oracle Linux

vi /etc/sysconfig/elasticsearch

Debian|Ubuntu

vi /etc/default/elasticsearch

4. Then locate the directive ‘DATA_DIR’ in the file

DATA_DIR="$ES_HOME/data"

5. After that we can modify it to the new path:

DATA_DIR="/new/path/data"

6. Then we can save the file and exit vi.

7. Now move the Existing Data

For moving the data from the old path we can use the following command:

mv /usr/local/nagioslogserver/elasticsearch/data/* /new/path/data/

8. Start Elasticsearch

We can start elasticsearch service with the following command:

RHEL 6|CentOS 6|Oracle Linux 6|Ubuntu 14

service elasticsearch start

RHEL 7|CentOS 7|Oracle Linux 7|Debian|Ubuntu 16/18

systemctl start elasticsearch.service

We can then log into Nagios Log Server to check if everything is correctly functioning.

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Conclusion

In this article, we saw one of the methods used by our Support Engineers for Changing the data storage location in a Nagios Log Server.