// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements.  See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You under the Apache License, Version 2.0
// (the "License"); you may not use this file except in compliance with
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//
// http://www.apache.org/licenses/LICENSE-2.0
//
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// distributed under the License is distributed on an "AS IS" BASIS,
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= Getting Started Guide

This guide provides essential details on how to start working with Ignite 3.0 by using the Ignite CLI tool,
including the following information:

* How to download and install the tool
* How to manage nodes using the Ignite CLI tool
* Additional information regarding the use of the tool

== Prerequisites


Ignite 3.0 was officially tested on:

include::../includes/prereqs.adoc[]


== Installing Ignite CLI Tool


To download and install the Ignite CLI Tool, follow the steps below:

. Create a folder. For example, use a Linux command similar to the following:
+
[tabs]
--
tab:Unix[]
[source,shell]
----
mkdir ignite3 && cd ignite3
----

tab:Windows (PowerShell)[]
[source,shell]
----
(mkdir ignite3) -AND (cd ignite3)
----

tab:Windows (CMD)[]
[source,shell]
----
mkdir ignite3 & cd ignite3
----
--

. Download the Ignite CLI tool and set required execute permissions:
+
[tabs]
--
tab:Unix[]
[source,shell]
----
curl -L "https://www.apache.org/dyn/mirrors/mirrors.cgi?action=download&filename=ignite/3.0.0-alpha1/ignite" -o ignite && chmod +x ignite
----

tab:Windows (PowerShell)[]
[source,shell]
----
include::../includes/ignite-cli-download-windows.adoc[tag=command,indent=0]
----

tab:Windows (CMD)[]
[source,shell]
----
include::../includes/ignite-cli-download-windows.adoc[tag=command,indent=0]
----
--

. Add your installation directory to the PATH environment variable:
+
[tabs]
--
tab:Unix[]
[source,shell]
----
echo 'export PATH="'`pwd`':$PATH"' >> ~/.bash_profile && source ~/.bash_profile
----

tab:Windows (PowerShell)[]
[source,shell]
----
$ENV:PATH += ";."
----

tab:Windows (CMD)[]
[source,text]
----
set PATH=%cd%;%PATH%
----
--

NOTE: On Windows, this latter change is not permanent and will only affect the current terminal session. If you want the
`ignite` command to be available after terminal or system restart, use the `System Properties` dialog to
permanently update the `PATH` environment variable by adding a full path to the Ignite installation directory.

== Using Ignite CLI Tool

Ignite CLI is a single entry point for all the Ignite operations. For example, it allows you to perform the following
actions:

* Manage existing nodes
* Install new nodes
* Update old nodes to new versions
* Install or remove optional modules

Let's use some of the <<Ignite CLI Tool Commands>>.

. Use the command below to see the full list:
+
[source, shell]
----
ignite
----

. Pass the `--help` parameter to the previous command to get its detailed description:
+
[source, shell]
----
ignite init --help
----

== Installing Ignite Artifacts and Dependencies

Ignite CLI allows to install Ignite modules and 3rd party Maven dependencies.

. To start an Ignite 3.0 cluster, you need to install Ignite core artifacts first:
+
[source, shell]
----
ignite init
----

. Use the `module add` command to download Guava from Maven and add it to the Ignite classpath:
+
[source, shell]
----
ignite module add mvn:com.google.guava:guava:23.0
----

. Confirm the library is added to the Ignite dependencies list:
+
[source, shell]
----
ignite module list
----

== Starting a Node

This section explains how to start a node, how to stop, and perform other basic operations with it.

. Start a cluster node setting `myFirstNode` as a node unique identifier:
+
[source, shell]
----
ignite node start myFirstNode
----

. Confirm the node is started and running:
+
[source, shell]
----
ignite node list
----
+
This command also displays the path to the log file.

. To view the log, use the log file path from the previous step result. To open the log file, use any suitable approach.
For example, use the `cat` command on a Unix operating system.

== Working With the Cluster

The Ignite CLI tool also allows to perform some operations with a cluster using the `config` command.

See some of the examples below:

. Read the cluster configuration:
+
[source, shell]
----
ignite config get
----
+
It can be performed either for the whole tree or filtered via the `--selector` option.

. Update the baseline topology auto-adjustment timeout:
+
[source, shell]
----
ignite config set local.baseline.autoAdjust.timeout=20000
----
. Confirm the change is applied:
+
[source, shell]
----
ignite config get --selector=local.baseline.autoAdjust.timeout
----

== Stopping the Cluster

To stop the node, use the command below passing `myFirstNode` as a node unique identifier:
[source, shell]
----
ignite node stop myFirstNode
----

== Next Steps

From here, you may want to:

* Check out the link:ignite-cli-tool[Ignite CLI Tool] page for more detail on supported commands.

//== Apache Ignite Configuration
//
//Apache Ignite uses HOCON configuration format.
//For more detail, please see the link:https://github.com/lightbend/config/blob/master/HOCON.md[HOCON documentation,window=_blank].