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                    <h2><b><a href="https://www.sipmann.com/zabbix-poller-processes-more-than-75.html" title="Zabbix poller processes more than 75%">Zabbix poller processes more than 75%</a></b></h2>
                    <h5>
                        <i class="fa fa-calendar"></i><time class="w3-opacity" datetime="2020-07-02T19:00:00-03:00"> Thu 02 July 2020</time>
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                    <p><p>Hey folks, this is the third post about tweaking the Zabbix configurations. All changes that I've suggested here were based on a Zabbix Server with 50+ hosts. Another thing that can happen to your server, it's the poller get overwhelmed by the amount of servers that need to be polled …</p></p>
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                    <h2><b><a href="https://www.sipmann.com/monitoring-website-heath-with-azure-functions.html" title="Monitoring a Website heath with Azure Functions">Monitoring a Website heath with Azure Functions</a></b></h2>
                    <h5>
                        <i class="fa fa-calendar"></i><time class="w3-opacity" datetime="2020-06-22T19:00:00-03:00"> Mon 22 June 2020</time>
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                    <p><p>Sometimes you get your self in need to monitor a website's health or it's content for changes. Of course, there's plenty of options out there, but for the sake of curiosity, let's code our own to see what we can do. First things first. Everything you'll see here, you can …</p></p>
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                    <h2><b><a href="https://www.sipmann.com/azure-data-fundamentals-certification-80-discount.html" title="Azure Data Fundamentals certification with 80% discount">Azure Data Fundamentals certification with 80% discount</a></b></h2>
                    <h5>
                        <i class="fa fa-calendar"></i><time class="w3-opacity" datetime="2020-06-09T12:30:00-03:00"> Tue 09 June 2020</time>
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                    <p><p>Hey folks, if you want to achieve some certification this year, keep an eye open for vouchers. A few months ago, Oracle released a set of free courses with certifications. Now it's Microsoft time. Microsoft is updating they're certifications and we have a voucher of 80% discount using the coupon …</p></p>
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                    <h2><b><a href="https://www.sipmann.com/zabbix-icmp-pinger-processes-more-than-75.html" title="Zabbix ICMP pinger processes more than 75%">Zabbix ICMP pinger processes more than 75%</a></b></h2>
                    <h5>
                        <i class="fa fa-calendar"></i><time class="w3-opacity" datetime="2020-05-25T16:00:00-03:00"> Mon 25 May 2020</time>
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                    <p><p>So your monitoring sytems have grown and your zabbix started loggin "Zabbix icmp pinger processes more than 75% busy" at the dashboard.</p>
<p><img alt="Dashboard do zabbix avisando sobre o erro" src="/images/zabbix_pinger01.png"></p>
<p>All you have to do is open your config file (<code>/etc/zabbix/zabbix_server.conf</code>) and find the a tag named <code>StartPingers</code>. It'll be commented by default. Uncomment it …</p></p>
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                    <h2><b><a href="https://www.sipmann.com/zabbix-server-out-of-memory-crash.html" title="Zabbix Server Out of Memory">Zabbix Server Out of Memory</a></b></h2>
                    <h5>
                        <i class="fa fa-calendar"></i><time class="w3-opacity" datetime="2020-02-27T19:00:00-03:00"> Thu 27 February 2020</time>
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                    <p><p>Do you have a crashing Zabbix Server and looking through the log <code>/var/log/zabbix/zabbix_server.log</code> you see the following out of memory message?</p>
<div class="highlight"><pre><span></span><code>__mem_malloc: skipped <span class="m">0</span> asked <span class="m">24</span> skip_min <span class="m">18446744073709551615</span> skip_max <span class="m">0</span>
<span class="o">[</span>file:dbconfig.c,line:94<span class="o">]</span> __zbx_mem_realloc<span class="o">()</span>: out of memory <span class="o">(</span>requested <span class="m">16</span> bytes<span class="o">)</span>
<span class="o">[</span>file:dbconfig.c,line …</code></pre></div></p>
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                    <h2><b><a href="https://www.sipmann.com/flutter_with_firebase_auth_crashing.html" title="Flutter + firebase auth crashing">Flutter + firebase auth crashing</a></b></h2>
                    <h5>
                        <i class="fa fa-calendar"></i><time class="w3-opacity" datetime="2019-10-03T19:00:00-03:00"> Thu 03 October 2019</time>
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                    <p><p>Hey Folks, recently I've started learning <a href="https://flutter.dev/">Flutter</a> and right after a TODO List, I tried a Firebase integration. But as soon as I started setting the dependencies, my app stopped opening... just a crash. After a few logs digging, I've found the following log.</p>
<div class="highlight"><pre><span></span><code>AndroidRuntime: FATAL EXCEPTION: main
AndroidRuntime: Process …</code></pre></div></p>
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                    <h2><b><a href="https://www.sipmann.com/removing-user-from-sql-server-database.html" title="Removing a user from SQL Server database who owns a schema">Removing a user from SQL Server database who owns a schema</a></b></h2>
                    <h5>
                        <i class="fa fa-calendar"></i><time class="w3-opacity" datetime="2019-09-06T07:00:00-03:00"> Fri 06 September 2019</time>
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                    <p><p>Your customer urge you to drop a user from the MsSQL Server database, but you stuck with the following related error:</p>
<div class="highlight"><pre><span></span><code><span class="n">Error</span><span class="o">:</span> <span class="mi">15138</span> <span class="n">The</span> <span class="n">database</span> <span class="n">principal</span> <span class="n">owns</span> <span class="n">a</span> <span class="n">schema</span> <span class="k">in</span> <span class="n">the</span> <span class="n">database</span><span class="o">,</span> <span class="n">and</span> <span class="n">cannot</span> <span class="n">be</span> <span class="n">dropped</span><span class="o">.</span>
</code></pre></div>

<p>That means that the user owns one or more shcemas of your database. If …</p></p>
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                <a href="https://www.sipmann.com/limiting-connection-resources-sql-server.html" title="Limiting Connection Resources on SQL Server">
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                    <h2><b><a href="https://www.sipmann.com/limiting-connection-resources-sql-server.html" title="Limiting Connection Resources on SQL Server">Limiting Connection Resources on SQL Server</a></b></h2>
                    <h5>
                        <i class="fa fa-calendar"></i><time class="w3-opacity" datetime="2019-08-12T12:00:00-03:00"> Mon 12 August 2019</time>
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                    <p><p>Have you ever suffered from a slow SQLServer database? Someone love to run that heavy query in the database? Resource Governor to the rescue. You can set a few rules on how users (connections actually) will use the server/database resources based on a few things.</p>
<p>First things first, if …</p></p>
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                    <h2><b><a href="https://www.sipmann.com/using_git_hooks_easy_your_life.html" title="Using git hooks to easy your life">Using git hooks to easy your life</a></b></h2>
                    <h5>
                        <i class="fa fa-calendar"></i><time class="w3-opacity" datetime="2019-07-30T20:00:00-03:00"> Tue 30 July 2019</time>
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                    <p><p>Hey folks, it's been a time since my last post. In the meantime, I moved to another state, changed job, and started learning new kinds of stuff. Today I would like to share one thing that I usually do with my small git projects. Git has many cool features, git …</p></p>
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                    <h2><b><a href="https://www.sipmann.com/microservices_nodejs_express_rabbitmq_part_2.html" title="Microservices with NodeJS, Express.js and RabbitMQ Part 2">Microservices with NodeJS, Express.js and RabbitMQ Part 2</a></b></h2>
                    <h5>
                        <i class="fa fa-calendar"></i><time class="w3-opacity" datetime="2018-04-13T13:00:00-03:00"> Fri 13 April 2018</time>
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                    <p><p>If you haven't read the <a class="reference external" href="https://www.sipmann.com/microservices_nodejs_express_rabbitmq_part_1-en.html">part 1</a> go ahead and read it... It can be useful :). Or if for some reason you want to start now, you can grab the project where we stopped <a class="reference external" href="https://github.com/sipmann/imagecompacter/releases/tag/v1">here</a> and get along. On this part, we'll implement the RabbitMQ queue and see how we …</p></p>
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