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	<title>alertmanager &#8211; Robust Perception | Prometheus Monitoring Experts</title>
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		<title>Pre-populated silence URLs</title>
		<link>/pre-populated-silence-urls</link>
		
		<dc:creator><![CDATA[Brian Brazil]]></dc:creator>
		<pubDate>Mon, 28 Sep 2020 07:33:48 +0000</pubDate>
				<category><![CDATA[Posts]]></category>
		<category><![CDATA[alertmanager]]></category>
		<category><![CDATA[prometheus]]></category>
		<guid isPermaLink="false">https://www.robustperception.io/?p=5655</guid>

					<description><![CDATA[You don't have to fill in all the silence details yourself. We've previously looked at creating Alertmanager silences from the command line and scripts. When you're oncall though, you'll often be creating silences for firing alerts by hand to keep your pager quiet while you investigate. The usual way is not to manually type out [&#8230;]]]></description>
		
		
		
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		<item>
		<title>Creating Alertmanager Silences from Python</title>
		<link>/creating-alertmanager-silences-from-python</link>
		
		<dc:creator><![CDATA[Brian Brazil]]></dc:creator>
		<pubDate>Mon, 06 Jul 2020 09:37:06 +0000</pubDate>
				<category><![CDATA[Posts]]></category>
		<category><![CDATA[alertmanager]]></category>
		<category><![CDATA[prometheus]]></category>
		<category><![CDATA[python]]></category>
		<guid isPermaLink="false">https://www.robustperception.io/?p=5457</guid>

					<description><![CDATA[We recently looked at creating silences from the command line, what about from programs? While shell scripting for automated tasks is common, beyond a certain point their complexity justifies a different programming language be employed - such as Python. While you could shell out to amtool to create silences, there's also a simple REST API [&#8230;]]]></description>
		
		
		
			</item>
		<item>
		<title>Pre-creating Alertmanager Silences</title>
		<link>/pre-creating-alertmanager-silences</link>
		
		<dc:creator><![CDATA[Brian Brazil]]></dc:creator>
		<pubDate>Mon, 08 Jun 2020 08:40:58 +0000</pubDate>
				<category><![CDATA[Posts]]></category>
		<category><![CDATA[alertmanager]]></category>
		<category><![CDATA[prometheus]]></category>
		<guid isPermaLink="false">https://www.robustperception.io/?p=5430</guid>

					<description><![CDATA[You don't have to wait for alerts to fire to create a silence. While silences are useful when an alert is firing and you want to keep your pager quiet while investigating or waiting for your intervention to take effect, that's not the only way they can be used. If you've an upcoming maintenance, or [&#8230;]]]></description>
		
		
		
			</item>
		<item>
		<title>CC and BCC in Alertmanager emails</title>
		<link>/cc-and-bcc-in-alertmanager-emails</link>
		
		<dc:creator><![CDATA[Brian Brazil]]></dc:creator>
		<pubDate>Mon, 16 Dec 2019 08:16:54 +0000</pubDate>
				<category><![CDATA[Posts]]></category>
		<category><![CDATA[alertmanager]]></category>
		<category><![CDATA[email]]></category>
		<guid isPermaLink="false">https://www.robustperception.io/?p=4853</guid>

					<description><![CDATA[If you look at the documentation, the Alertmanager has a to field, but nothing for CC or BCC. So how do you do those? To explain this, we first need to dig into how email, and in particular the email protocol SMTP, works. There's two parts to sending an email, the envelope which consists of [&#8230;]]]></description>
		
		
		
			</item>
		<item>
		<title>Laying out Alertmanager routes</title>
		<link>/laying-out-alertmanager-routes</link>
		
		<dc:creator><![CDATA[Brian Brazil]]></dc:creator>
		<pubDate>Mon, 23 Sep 2019 08:48:13 +0000</pubDate>
				<category><![CDATA[Posts]]></category>
		<category><![CDATA[alertmanager]]></category>
		<category><![CDATA[best practices]]></category>
		<category><![CDATA[prometheus]]></category>
		<guid isPermaLink="false">https://www.robustperception.io/?p=4621</guid>

					<description><![CDATA[How should you design your Alertmanager routes for flexibility and growth? Starting out with a small setup for one-ish team, it's fine to wing it in terms of your Alertmanager routes. You'll only have a handful of simple business logic you want, such as pages go to oncall, everything else goes to a ticketing system. [&#8230;]]]></description>
		
		
		
			</item>
		<item>
		<title>Why do resolved notifications contain old values?</title>
		<link>/why-do-resolved-notifications-contain-old-values</link>
		
		<dc:creator><![CDATA[Brian Brazil]]></dc:creator>
		<pubDate>Mon, 14 Jan 2019 10:27:07 +0000</pubDate>
				<category><![CDATA[Posts]]></category>
		<category><![CDATA[alerting]]></category>
		<category><![CDATA[alertmanager]]></category>
		<category><![CDATA[prometheus]]></category>
		<guid isPermaLink="false">https://www.robustperception.io/?p=4184</guid>

					<description><![CDATA[It often confuses users as to why resolved notifications don't contain updated annotations values. Let's dig into why. Let's say you had an alert like: - alert: MyAlert expr: foo &#62; 100 annotations: description: 'Foo is {{$value}}' As the alert is firing, the Alertmanager will receive annotations such as "Foo is 102" and "Foo is [&#8230;]]]></description>
		
		
		
			</item>
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		<title>Don&#8217;t put the value in alert labels</title>
		<link>/dont-put-the-value-in-alert-labels</link>
		
		<dc:creator><![CDATA[Brian Brazil]]></dc:creator>
		<pubDate>Mon, 31 Dec 2018 11:07:47 +0000</pubDate>
				<category><![CDATA[Posts]]></category>
		<category><![CDATA[alerting]]></category>
		<category><![CDATA[alertmanager]]></category>
		<category><![CDATA[prometheus]]></category>
		<guid isPermaLink="false">https://www.robustperception.io/?p=4177</guid>

					<description><![CDATA[The labels of an alert are its identity, so you have to be a little careful what you put in there. Alerting rules have both labels and annotations fields, and when configuring them on the Prometheus side there's no difference between them. However their semantics and how both Prometheus and the Alertmanager deal with them [&#8230;]]]></description>
		
		
		
			</item>
		<item>
		<title>External URLs and path prefixes</title>
		<link>/external-urls-and-path-prefixes</link>
		
		<dc:creator><![CDATA[Brian Brazil]]></dc:creator>
		<pubDate>Mon, 02 Jul 2018 08:03:01 +0000</pubDate>
				<category><![CDATA[Posts]]></category>
		<category><![CDATA[alertmanager]]></category>
		<category><![CDATA[nginx]]></category>
		<category><![CDATA[prometheus]]></category>
		<guid isPermaLink="false">https://www.robustperception.io/?p=3883</guid>

					<description><![CDATA[In a previous post I looked at setting the external URL. What if the reverse proxy is sending a different path than the user is using? By default Prometheus (and Alertmanager) presumes that any path in the external URL is a prefix path that'll be in all requests that are sent to it. However that's [&#8230;]]]></description>
		
		
		
			</item>
		<item>
		<title>Using external URLs and proxies with Prometheus</title>
		<link>/using-external-urls-and-proxies-with-prometheus</link>
		
		<dc:creator><![CDATA[Brian Brazil]]></dc:creator>
		<pubDate>Mon, 25 Jun 2018 08:05:24 +0000</pubDate>
				<category><![CDATA[Posts]]></category>
		<category><![CDATA[alertmanager]]></category>
		<category><![CDATA[nginx]]></category>
		<category><![CDATA[prometheus]]></category>
		<guid isPermaLink="false">https://www.robustperception.io/?p=3877</guid>

					<description><![CDATA[Sometimes users will not access Prometheus's UI directly, instead using another URL. How do you make this work? The Prometheus web UI, such as the expression browser, depends on it being accessed on the same URL on which Prometheus itself is listening. This is as Prometheus needs to know where assets such as Javascript are [&#8230;]]]></description>
		
		
		
			</item>
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		<title>What&#8217;s the difference between group_interval, group_wait, and repeat_interval?</title>
		<link>/whats-the-difference-between-group_interval-group_wait-and-repeat_interval</link>
		
		<dc:creator><![CDATA[Conor Broderick]]></dc:creator>
		<pubDate>Mon, 18 Dec 2017 08:26:47 +0000</pubDate>
				<category><![CDATA[Posts]]></category>
		<category><![CDATA[alerting]]></category>
		<category><![CDATA[alertmanager]]></category>
		<category><![CDATA[prometheus]]></category>
		<guid isPermaLink="false">https://www.robustperception.io/?p=3286</guid>

					<description><![CDATA[In this blogpost we try and clear up some confusion by outlining the key differences between commonly confused alerting configuration options: group_interval, group_wait, and repeat_interval. Before digging into these 3 Alertmanager configuration options, let's recap on some Prometheus alerting basics. Prometheus itself has two global clocks: scrape_interval and evaluation_interval. &#160; The scrape_interval is the time [&#8230;]]]></description>
		
		
		
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