Amazon S3 (om_amazons3)
Amazon Simple Storage Service (S3) is an object storage service offering industry-leading scalability, data availability, security, and performance.
This module can be used to send logs to Amazon S3 and compatible services.
Amazon S3 buckets, objects, keys, and structure
Amazon S3 stores objects inside containers called buckets. A finite number of buckets that can store an infinite number of objects are available to the user. See Getting Started with Amazon S3 in the Amazon S3 User Guide for more information.
Both the input and output modules interact with a single bucket on Amazon S3. The module will not create, delete, or alter the bucket or any of its properties, permissions, or management options. Instead, you must create the bucket, provide the appropriate permissions (ACL), and further configure any lifecycle, replication, encryption, or other options. Similarly, the module does not alter the storage class of the objects stored or any other properties or permissions.
We selected a schema where we store events in a single bucket.
Each object has a key that references the server or service name, the date, and the time NXLog Agent received the event.
Although Amazon S3 uses a flat structure to store objects, it groups objects with similar key prefixes resembling a filesystem structure.
The following is a visual representation of our naming scheme.
Note that the key name at the fourth level represents the time in UTC.
However, Amazon S3 uses the colon (:) as a special character; therefore, we replace it with the dot (.) character to simplify matters.
-
MYBUCKET/
-
SERVER01/
-
2018-05-17/
-
12.36.34.1
-
12.36.35.1
-
-
2018-05-18/
-
10.46.34.1
-
10.46.35.1
-
10.46.35.2
-
10.46.36.1
-
-
-
SERVER02/
-
2018-05-16/
-
14.23.12.1
-
-
2018-05-17/
-
17.03.52.1
-
17.03.52.2
-
17.03.52.3
-
-
-
Configuration
The om_amazons3 module accepts the following directives in addition to the common module directives. The Bucket, Region, and Server directives are required.
The AccessKey and SecretKey directives are required if NXLog Agent is not running in the same tenant as the S3 bucket.
Required directives
The following directives are required for the module to start.
This mandatory directive specifies the Amazon S3 bucket name. |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
This mandatory directive specifies the service region code. It accepts any value when used in conjunction with the URL directive. Otherwise, the following codes are supported:
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
This mandatory directive sets the object path prefix. The module will write object names starting with the specified value. See Amazon S3 buckets, objects, keys, and structure. |
HTTP(S) directives
The following directives are for configuring HTTP(S) connection settings.
This optional directive can be specified multiple times to add custom headers to each HTTP request. |
|||
This optional directive can be used to enable HTTP compression for outgoing HTTP messages.
The possible values are |
|||
HTTP basic authorization password.
|
|||
HTTP basic authorization username.
|
|||
Specifies if the connection should be allowed with an expired certificate.
If set to |
|||
Specifies if the connection should be allowed without certificate verification.
If set to |
|||
The path to a directory containing certificate authority (CA) certificates. These certificates will be used to verify the certificate presented by the remote host. The certificate files must be named using the OpenSSL hashed format, i.e. the hash of the certificate followed by .0, .1 etc. To find the hash of a certificate using OpenSSL: For example, if the certificate hash is A remote host’s self-signed certificate (which is not signed by a CA) can also be trusted by including a copy of the certificate in this directory. The default operating system root certificate store will be used if this directive is not specified.
Unix-like operating systems commonly store root certificates in In addition, Microsoft’s PKI repository contains root certificates for Microsoft services. |
|||
The path of the certificate authority (CA) certificate that will be used to verify the certificate presented by the remote host. A remote host’s self-signed certificate (which is not signed by a CA) can be trusted by specifying the remote host certificate itself. In case of certificates signed by an intermediate CA, the certificate specified must contain the complete certificate chain (certificate bundle). |
|||
The path of the certificate file that will be presented to the remote host during the HTTPS handshake. |
|||
The path of the private key file that was used to generate the certificate specified by the HTTPSCertFile directive. This is used for the HTTPS handshake. |
|||
Maximum size of the request in bytes. The default is 64 MB. |
|||
This optional directive is used to specify the protocol, IP address (or hostname) and port number of the HTTP or SOCKS proxy host to be used.
The format is |
|||
This optional directive sets the reconnect interval in seconds. If it is set, the module attempts to reconnect in every defined second. If it is not set, the reconnect interval will start at 1 second and double with every attempt. If the duration of the successful connection is greater than the current reconnect interval, then the reconnect interval will be reset to 1 sec.
|
|||
This optional directive defines the behavior when the connection with the remote host is lost.
When set to |
Optional directives
This optional directive specifies the AWS public access key ID. If AccessKey and SecretKey are missing, the module will try to read the credentials from the environment, STS, profile, or instance metadata. If none are available, the module will try to log in anonymously. |
|
Number of allowed parallel HTTP connections. More connections mean bigger throughput. The default is 1. |
|
See the OutputType directive in the list of common module directives.
If this directive is not specified, the default is LineBased, i.e., the module will use This directive also supports data converters, see the description in the OutputType section. |
|
This boolean directive changes how the module constructs the URL to cater to providers like MinIO, which accepts the bucket name in the path instead of a subdomain.
The default is |
|
This optional directive specifies the AWS secret access key. |
|
Specify the URL for a custom endpoint. If the protocol is not specified, the module will use HTTPS. |
Examples
This configuration uses the om_amazons3 output module to forward logs to an Amazon S3 Bucket named MYBUCKET.
Object names will be prefixed with SERVER01 specified by the Server directive.
<Output amazon_s3>
Module om_amazons3
Region us-east-1
Bucket MYBUCKET
Server SERVER01
AccessKey <YOUR_ACCESS_KEY> (1)
SecretKey <YOUR_SECRET_KEY> (2)
</Output>This configuration uses the om_amazons3 output module to forward logs to a self-hosted MinIO S3 instance.
<Output amazon_s3>
Module om_amazons3
URL https://example.net (1)
Region myminio
Bucket MYBUCKET
Server SERVER01
AccessKey <YOUR_ACCESS_KEY> (2)
SecretKey <YOUR_SECRET_KEY> (3)
</Output>