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270 lines
12 KiB
HTML
270 lines
12 KiB
HTML
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<main>
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<h1 id="install-with-docker"><a class="header" href="#install-with-docker">Install with docker</a></h1>
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<p>Start up a local nats message broker</p>
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<pre><code class="language-bash">docker run -p 4444:4444 nats -p 4444
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</code></pre>
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<p>Create a ctrl docker image.</p>
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<pre><code class="language-bash">git clone git@github.com:postmannen/ctrl.git
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cd ctrl
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docker build -t ctrl:test1 .
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</code></pre>
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<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>
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<pre><code class="language-bash">mkdir -p testrun/readfolder
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cd testrun
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</code></pre>
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<p>create a .env file</p>
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<pre><code class="language-bash">cat << EOF > .env
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NODE_NAME="node1"
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BROKER_ADDRESS="127.0.0,1:4444"
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ENABLE_DEBUG=1
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START_PUB_REQ_HELLO=60
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IS_CENTRAL_ERROR_LOGGER=0
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EOF
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</code></pre>
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<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>
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<pre><code class="language-bash">docker run --env-file=".env" --rm -ti -v $(PWD)/readfolder:/app/readfolder ctrl:test1
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</code></pre>
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<p>Prepare and send a message.</p>
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<pre><code class="language-yaml">cat << EOF > msg.yaml
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---
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- toNodes:
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- node1
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method: REQCliCommand
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methodArgs:
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- "bash"
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- "-c"
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- |
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echo "some config line" > /etc/my-service-config.1
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echo "some config line" > /etc/my-service-config.2
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echo "some config line" > /etc/my-service-config.3
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systemctl restart my-service
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replyMethod: REQNone
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ACKTimeout: 0
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EOF
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cp msg.yaml readfolder
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</code></pre>
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<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.
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NB: If more nodes share the same name the requests will be loadbalanced between them round robin.</p>
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