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<p><a href="elma365-on-premises.html">BRIX On-Premises</a> / Configure parameters of portable services using ConfigMap</p>
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<div class="topic__title"><h1 class="p_Heading1"><span class="f_Heading1">Configure parameters of portable services using ConfigMap</span></h1>
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<p class="p_Normal">You can set limits and parameters for deploying microservices from <a href="portable-microservices.html" class="topiclink">portable services in modules</a> using ConfigMap. This allows you to limit the dedicated resources, define the number of microservice instances that are deployed in Kubernetes, and configure their autoscaling. In addition, you can configure the distribution of microservice pods across cluster nodes in ConfigMap.</p>
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<p class="p_Normal">You can specify global settings for portable services configured in all modules of the system, as well as add individual settings for a specific service.</p>
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<p class="p_Normal">You can use ConfigMap for:</p>
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<ul style="list-style-type:disc">
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<li class="p_Normal">Fine tuning of microservice deployment. You can specify parameter values that are not available when <a href="portable-services.html#docker-settings" class="topiclink">editing a portable service in a module</a>.</li><li class="p_Normal">Changing settings without editing the module. It is useful for paid modules. For example, you can set the number of microservice instances because the parameter in ConfigMap is prioritized over the value set by the developer when creating the module.</li></ul>
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<p class="p_Normal">To configure ConfigMap, do the following steps:</p>
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<ol style="list-style-type:decimal">
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<li value="1" class="p_Normal"><a href="configmap.html#enable-configmap" class="topiclink">Enable ConfigMap</a>.</li><li value="2" class="p_Normal"><a href="configmap.html#configmap-parameters" class="topiclink">Set parameters in ConfigMap</a>.</li></ol>
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<h2 class="p_Heading2"><a id="enable-configmap" class="hmanchor"></a><span class="f_Heading2">Step 1: Enable ConfigMap</span></h2>
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<p class="p_Normal">To use ConfigMap for configuration of portable services, enable the <code><b>ELMA365_BABYSITTER_ENABLE_CONFIGMAP_WATCHER</b></code> environment variable for the <span style="font-weight: bold;">babysitter</span> service. To do this, make changes to the <code><b>values-elma365.yaml</b></code> configuration file:</p>
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<ol style="list-style-type:upper-roman">
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<li value="1" class="p_Normal">Create a backup copy of the <code><b>values-elma365.yaml</b></code> file filled in when installing BRIX. This is required before editing, as incorrect parameter settings may cause BRIX application malfunction.</li></ol>
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<ol style="list-style-type:upper-roman" start="2">
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<li value="2" class="p_Normal">In the <code><b>values-elma365.yaml</b></code> configuration file, enable the following parameters:</li></ol>
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<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">global:</span><br />
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<span class="f_CodeExample">...</span><br />
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<span class="f_CodeExample"># Enable portable services</span><br />
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<span class="f_CodeExample"> managedServices:</span><br />
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<span class="f_CodeExample"> enabled: </span><span class="f_CodeExample" style="font-weight: bold;">true</span><br />
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<span class="f_CodeExample">...</span><br />
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<span class="f_CodeExample"># ConfigMap use</span><br />
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<span class="f_CodeExample"> watchableConfigMap:</span><br />
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<span class="f_CodeExample"> enabled: </span><span class="f_CodeExample" style="font-weight: bold;">true</span></p>
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<ol style="list-style-type:upper-roman" start="3">
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<li value="3" class="p_Normal">Update the BRIX application using the following command:</li></ol>
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<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">helm upgrade elma365 ./elma365 -f values-elma365.yaml --timeout=30m</span></p>
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<p class="p_Normal">After that, a file that stores ConfigMap parameters will be automatically created. It will be added to the <code><b>namespace</b></code> where the portable services are placed, which is <code><b>elma365-applets</b></code> by default. The file is preconfigured with a ConfigMap named <code><b>elma365-babysitter-config</b></code>. For correct operation, it is recommended to not change the default name.</p>
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<p class="p_Normal">Now you can set the parameters in ConfigMap.</p>
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<p class="p_Normal">To return to the default settings and start the configuration again, delete the <code><b>cfg.yaml</b></code> file and run the following command to regenerate it:</p>
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<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">kubectl apply -f cfg.yaml -n elma365-applets</span></p>
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<p class="p_Normal">Where <code><b>elma365-applets</b></code> is the <code><b>namespace</b></code> for placing the portable services.</p>
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<h2 class="p_Heading2"><a id="configmap-parameters" class="hmanchor"></a><span class="f_Heading2">Step 2: Set parameters in ConfigMap</span></h2>
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<p class="p_Normal">To change the settings:</p>
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<ol style="list-style-type:upper-roman">
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<li value="1" class="p_Normal">Run the command to open the ConfigMap file for editing:</li></ol>
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<p class="p_CodeExample" style="white-space: normal; page-break-inside: avoid;"><span class="f_CodeExample">kubectl edit configmap elma365-babysitter-config -n elma365-applets</span></p>
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<p class="p_Normal">Where:</p>
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<ul style="list-style-type:disc">
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<li class="p_Normal"><code><b>elma365-babysitter-config</b></code> is the name of the ConfigMap in the <span style="font-weight: bold;">cfg.yaml</span> file.</li><li class="p_Normal"><code><b>elma365-applets</b></code> is the namespace that hosts the portable services.</li></ul>
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<ol style="list-style-type:upper-roman" start="2">
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<li value="2" class="p_Normal">In the opened file, set:</li></ol>
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<ul style="list-style-type:disc">
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<li class="p_Normal">Global parameters. They are applied by default to portable services in all modules. Set them in the <code><b>global</b></code> block.</li><li class="p_Normal">Parameters for a particular service. To set them, add a block with the service name according to the template: <code><b>{company}.ext_{id}.{unique_name}</b></code> where:</li></ul>
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<ul style="list-style-type:disc"><ul style="list-style-type:circle">
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<li class="p_Normal"><code><b>company</b></code> is the BRIX company code. You can find it in its URL address.</li><li class="p_Normal"><code><b>id</b></code> is the identifier of the module where the portable service is configured. You can copy it from the URL address of the module in BRIX.</li><li class="p_Normal"><code><b>unique_name</b></code> is the unique name of the portable service from the <a href="portable-services.html#add-service" class="topiclink">module settings</a>.</li></ul></li></ul>
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<p class="p_Normal"><a class="dropdown-toggle" style="font-style: normal; font-weight: normal; color: #000000; background-color: transparent; text-decoration: none;" href="javascript:HMToggle('toggle','TOGGLE0186A1')">ConfigMap example</a></p>
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<div id="TOGGLE0186A1" class="dropdown-toggle-body" style="text-align: left; text-indent: 0; page-break-inside: avoid; padding: 0 0 0 0; margin: 0 0 0 0;"><table style="border:none; border-spacing:0;">
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<tr>
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<td style="vertical-align:top; padding:0; border:none"><p class="p_CodeExample" style="white-space: normal; page-break-inside: avoid;"><span class="f_CodeExample">apiVersion:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">v1</span><br />
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<span class="f_CodeExample">kind:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">ConfigMap</span><br />
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<span class="f_CodeExample">metadata:</span><br />
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<span class="f_CodeExample"> name:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">elma365-babysitter-config</span><br />
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<span class="f_CodeExample"> annotations:</span><br />
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<span class="f_CodeExample"> "helm.sh/resource-policy":</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">keep</span><br />
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<span class="f_CodeExample">data:</span><br />
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<span class="f_CodeExample"> # Global settings</span><br />
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<span class="f_CodeExample"> global:</span><br />
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<span class="f_CodeExample"> replicaCount:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">1</span><br />
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<span class="f_CodeExample"> nodeSelector:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><br />
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<span class="f_CodeExample"> role:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">brix</span><span class="f_CodeExample" style="color: #ffffff;"> </span><br />
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<span class="f_CodeExample"> tolerations:</span><br />
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<span class="f_CodeExample"> -</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">effect:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">NoSchedule</span><br />
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<span class="f_CodeExample"> key:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">dedicated</span><br />
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<span class="f_CodeExample" style="font-weight: bold;"> operator</span><span class="f_CodeExample">:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">Equal</span><br />
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<span class="f_CodeExample"> value:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">brix</span><br />
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<span class="f_CodeExample"> autoscaling:</span><br />
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<span class="f_CodeExample"> enabled:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample" style="font-weight: bold;">true</span><br />
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<span class="f_CodeExample"> minReplicas:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">1</span><br />
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<span class="f_CodeExample"> maxReplicas:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">9</span><br />
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<span class="f_CodeExample"> targetMemoryUtilizationPercentage:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">80</span><br />
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||||
<span class="f_CodeExample"> targetCPUUtilizationPercentage:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">80</span><br />
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||||
<span class="f_CodeExample"> resources:</span><br />
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||||
<span class="f_CodeExample"> requests:</span><br />
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||||
<span class="f_CodeExample"> memory:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">"384Mi"</span><br />
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||||
<span class="f_CodeExample"> cpu:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">"250m"</span><br />
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||||
<span class="f_CodeExample"> limits:</span><br />
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||||
<span class="f_CodeExample"> memory:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">"1024Mi"</span><br />
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||||
<span class="f_CodeExample"> cpu:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">"1000m"</span><br />
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||||
<span class="f_CodeExample"> </span><br />
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||||
<span class="f_CodeExample"> # Settings for a particular service</span><br />
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||||
<span class="f_CodeExample"> abcd12345efgh.ext_4a685c94-3dcd-433a-ac5f-6367aaf38950.portable_service:</span><br />
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||||
<span class="f_CodeExample"> resources:</span><br />
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||||
<span class="f_CodeExample"> requests:</span><br />
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||||
<span class="f_CodeExample"> memory:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">"512Mi"</span><br />
|
||||
<span class="f_CodeExample"> cpu:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">"500m"</span><br />
|
||||
<span class="f_CodeExample"> limits:</span><br />
|
||||
<span class="f_CodeExample"> memory:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">"2048Mi"</span><br />
|
||||
<span class="f_CodeExample"> cpu:</span><span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">"1000m"</span></p>
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||||
</td>
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</tr>
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</table>
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||||
</div>
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||||
<p class="p_Normal">Available parameters:</p>
|
||||
<ol style="list-style-type:decimal">
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||||
<li value="1" class="p_Normal"><span style="font-weight: bold;">Resources</span> (<code><b>resources</b></code>):</li></ol>
|
||||
<ul style="list-style-type:disc">
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||||
<li class="p_Normal"><code><b>requests</b></code> are memory and CPU resources to be dedicated for the microservice.</li><li class="p_Normal"><code><b>limits</b></code> is the maximum values of dedicated resources.</li></ul>
|
||||
<p class="p_Normal">Read more about possible values of these parameters in the <a href="https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/#resource-units-in-kubernetes" target="_blank" class="weblink">official Kubernetes documentation</a>.</p>
|
||||
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">начало примера</span></p>
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||||
<p class="p_Normal">Example</p>
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||||
<p class="p_CodeExample" style="white-space: normal; page-break-inside: avoid;"><span class="f_CodeExample">resources:</span><br />
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||||
<span class="f_CodeExample"> requests:</span><br />
|
||||
<span class="f_CodeExample"> memory: "512Mi"</span><br />
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||||
<span class="f_CodeExample"> cpu: "500m"</span><br />
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||||
<span class="f_CodeExample"> limits:</span><br />
|
||||
<span class="f_CodeExample"> memory: "2048Mi"</span><br />
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||||
<span class="f_CodeExample"> cpu: "1000m"</span></p>
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||||
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">конец примера</span></p>
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||||
<ol style="list-style-type:decimal" start="2">
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||||
<li value="2" class="p_Normal"><span style="font-weight: bold;">Number of instances</span> (<code><b>replicaCount</b></code>). How many pods to start for the microservice. Available values: 0-32k.</li></ol>
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||||
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">начало примера</span></p>
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||||
<p class="p_Normal">Example</p>
|
||||
<p class="p_CodeExample" style="white-space: normal; page-break-inside: avoid;"><span class="f_CodeExample">replicaCount: 4</span></p>
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||||
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">конец примера</span></p>
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||||
<ol style="list-style-type:decimal" start="3">
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||||
<li value="3" class="p_Normal"><span style="font-weight: bold;">Autoscaling</span> (<code><b>autoscaling</b></code>):</li></ol>
|
||||
<ul style="list-style-type:disc">
|
||||
<li class="p_Normal"><code><b>enabled</b></code> enables autoscaling.</li><li class="p_Normal"><code><b>minReplicas</b></code> is the minimum number of microservice instances. Available values: 0-32k.</li><li class="p_Normal"><code><b>maxReplicas</b></code> is the maximum number of instances. Available values: 0-32k.</li><li class="p_Normal"><code><b>targetMemoryUtilizationPercentage</b></code> is desired memory usage in percentage. Available values: 0-100.</li><li class="p_Normal"><code><b>targetCPUUtilizationPercentage</b></code> is desired CPU resource utilization in percentage. Available values: 0-100.</li></ul>
|
||||
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">начало примера</span></p>
|
||||
<p class="p_Normal">Example</p>
|
||||
<p class="p_CodeExample" style="white-space: normal; page-break-inside: avoid;"><span class="f_CodeExample">autoscaling:</span><br />
|
||||
<span class="f_CodeExample"> enabled: true</span><br />
|
||||
<span class="f_CodeExample"> minReplicas: 1</span><br />
|
||||
<span class="f_CodeExample"> maxReplicas: 9</span><br />
|
||||
<span class="f_CodeExample"> targetMemoryUtilizationPercentage: 80</span><br />
|
||||
<span class="f_CodeExample"> targetCPUUtilizationPercentage: 80</span></p>
|
||||
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">конец примера</span></p>
|
||||
<ol style="list-style-type:decimal" start="4">
|
||||
<li value="4" class="p_Normal"><span style="font-weight: bold;">Select nodes for pod placement</span> (<code><b>nodeSelector</b></code>). Configure microservices pods to be placed on specific cluster nodes using special tags.</li></ol>
|
||||
<p class="p_Normal">Read more about using the parameter in the <span style="color: #0563c1;"><a href="https://kubernetes.io/docs/tasks/configure-pod-container/assign-pods-nodes/" target="_blank" class="weblink">official Kubernetes documentation</a></span>.</p>
|
||||
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">начало примера</span></p>
|
||||
<p class="p_Normal"><span style="font-weight: bold;">Example</span></p>
|
||||
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">nodeSelector:</span><br />
|
||||
<span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">role: brix</span><br />
|
||||
<span class="f_CodeExample" style="color: #ffffff;"> </span><span class="f_CodeExample">disk: ssd</span></p>
|
||||
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">конец примера</span></p>
|
||||
<ol style="list-style-type:decimal" start="5">
|
||||
<li value="5" class="p_Normal"><span style="font-weight: bold;">Tolerations for placing pods</span> (<code><b>tolerations</b></code>). Set tolerations for microservice pods so that they can be placed on nodes with appropriate taints.</li></ol>
|
||||
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">начало примера</span></p>
|
||||
<p class="p_Normal"><span style="font-weight: bold;">Example</span></p>
|
||||
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">tolerations:</span><br />
|
||||
<span class="f_CodeExample"> - effect: NoSchedule</span><br />
|
||||
<span class="f_CodeExample"> key: dedicated</span><br />
|
||||
<span class="f_CodeExample" style="font-weight: bold;"> operator</span><span class="f_CodeExample">: Equal</span><br />
|
||||
<span class="f_CodeExample"> value: monitoring</span></p>
|
||||
<p class="p_CodeExample" style="page-break-inside: avoid;"><span class="f_CodeExample">конец примера</span></p>
|
||||
<ol style="list-style-type:upper-roman" start="3">
|
||||
<li value="3" class="p_Normal">After making the changes, apply them using the command specifying the <code><b>namespace</b></code> that hosts the portable services:</li></ol>
|
||||
<p class="p_CodeExample" style="white-space: normal; page-break-inside: avoid;"><span class="f_CodeExample">kubectl apply -f cfg.yaml -n elma365-applets</span></p>
|
||||
<p class="p_Normal">The settings will be applied automatically as the <span style="font-weight: bold;">babysitter</span> service tracks changes in ConfigMap. All microservices for which the settings have changed will restart.</p>
|
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