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<main>
<h1 id="install-with-docker"><a class="header" href="#install-with-docker">Install with docker</a></h1>
<p>Start up a local nats message broker</p>
<pre><code class="language-bash">docker run -p 4444:4444 nats -p 4444
</code></pre>
<p>Create a ctrl docker image.</p>
<pre><code class="language-bash">git clone git@github.com:postmannen/ctrl.git
cd ctrl
docker build -t ctrl:test1 .
</code></pre>
<p>Create a folder which will be the working directory for the node. This is where we keep the .env file, and can mount local host folders to folders within the container.</p>
<pre><code class="language-bash">mkdir -p testrun/readfolder
cd testrun
</code></pre>
<p>create a .env file</p>
<pre><code class="language-bash">cat &lt;&lt; EOF &gt; .env
NODE_NAME="node1"
BROKER_ADDRESS="127.0.0,1:4444"
ENABLE_DEBUG=1
START_PUB_REQ_HELLO=60
IS_CENTRAL_ERROR_LOGGER=0
EOF
</code></pre>
<p>Start the ctrl container. To be able to send messages into ctrl we mount the readfolder to a local directory. When we later got a messages to send we just copy it into the read folder and ctrl will pick it up and handle it. Messages can be in either YAML or JSON format.</p>
<pre><code class="language-bash">docker run --env-file=".env" --rm -ti -v $(PWD)/readfolder:/app/readfolder ctrl:test1
</code></pre>
<p>Prepare and send a message.</p>
<pre><code class="language-yaml">cat &lt;&lt; EOF &gt; msg.yaml
---
- toNodes:
- node1
method: REQCliCommand
methodArgs:
- "bash"
- "-c"
- |
echo "some config line" &gt; /etc/my-service-config.1
echo "some config line" &gt; /etc/my-service-config.2
echo "some config line" &gt; /etc/my-service-config.3
systemctl restart my-service
replyMethod: REQNone
ACKTimeout: 0
EOF
cp msg.yaml readfolder
</code></pre>
<p>With the above message we send to ourselves since we only got 1 node running. To start up more nodes repeat the above steps, replace the node name under <code>toNodes</code> with new names for new nodes.
NB: If more nodes share the same name the requests will be loadbalanced between them round robin.</p>
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