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A Journey of a Thousand Miles Begins with a Single Step

Multiple configuration files for logstash

Structure of a config file: A Logstash config file has a separate section for each type of plugin you want to add to the event processing pipeline.

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List and check alias in elasticsearch

This post gives an example how to check an alias or aliases in elasticsearch with the REST-API.

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List all used IP addresses in a network

nmap - Network exploration tool and security / port scanner - allows to scan an entire network and list all used or assigned IP addresses in a private network. This post shows a little example.

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Convert from CSV to JSON with logstash

logstash allows with various plugins a quick solution, to convert CSV input to JSON output.

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Check optional scripts in rpm file

RPM allows optional scripts to be executed within the install and remove operation.

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Correct Rpmdb

Seeing this Rpmdb checksum is invalid: dCDPT(pkg checksums) in RedHat or CentOS?

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Delete lines in vi

vi or vim (vi improved) has powerful ways to delete line. This post gives some examples.

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Backup and restore Kibana 4 objects

This post explains the backup of Kibana 4.1 objects and how to restore them.

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Using variables in the CLI script

JBoss can use variables (passed as parameters) in the CLI script. This post describes the details behind it. If the parameter is not passed, it can used the given default.

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