Monitoring OVH: 300k servers, 28 DCs… and one Metrics platform Horacio Gonzalez @LostInBrittany Monitoring OVH @LostInBrittany

Who are we? Introducing myself and introducing OVH Monitoring OVH @LostInBrittany

Horacio Gonzalez @LostInBrittany Spaniard lost in Brittany, developer, dreamer and all-around geek Flutter Monitoring OVH @LostInBrittany

OVH: A Global Leader on Cloud 200k Private cloud VMs running 1 Dedicated IaaS Europe 2018 27 Datacenters Own 15 Tbps Hosting capacity : 1.3M Physical Servers 360k Servers already deployed 2020 50 Datacenters Netwok with 35 PoPs

1.3M Customers in 138 Countries Monitoring OVH @LostInBrittany

OVH : Key Figures 1.3M Customers worldwide in 138 Countries 1.5 Billions euros investment over five years 28 Datacenters (growing) 350k Dedicated Servers 200k Private cloud VMs running 650k Public cloud Instances created in a month 20TB bandwidth capacity

2 500 Employees in 19 countries 18 Years of Innovation 35 Points of presence 4TB Anti DDoS capacity Hosting capacity : 1.3M Physical Servers Monitoring OVH @LostInBrittany

Ranking & Recognition 1st European Cloud Provider* 1st Hosting provider in Europe 1st Provider Microsoft Exchange Certified vCloud Datacenter Certified Kubernetes platform (CNCF) Vmware Global Service Provider 2013-2016 Veeam Best Cloud Partner of the year (2018) Monitoring OVH @LostInBrittany

Netcraft 2017 -

OVH: Our solutions Cloud Web Hosting Mobile Hosting Telecom VPS Containers ▪ Dedicated Server Domain names VoIP Public Cloud Compute ▪ Data Storage Email SMS/Fax Private Cloud ▪ Network and Database CDN Virtual desktop Serveur dédié Security Object Storage Web hosting Cloud HubiC Over theBox ▪ Licences Cloud Desktop Securities MS Oﬃce Hybrid Cloud Messaging MS solutions Monitoring OVH @LostInBrittany

Once upon a time… Because I love telling tales Monitoring OVH @LostInBrittany

This talk is about a tale… A true one nevertheless Monitoring OVH @LostInBrittany

And as in most tales It begins with a mission Monitoring OVH @LostInBrittany

And a band of heroes Engulfed into the adventure Monitoring OVH @LostInBrittany

They fight against mishaps And all kind of foes Monitoring OVH @LostInBrittany

They build mighty fortresses Pushing the limits of possible Monitoring OVH @LostInBrittany

And defend them day after day Against all odds Monitoring OVH @LostInBrittany

But we don’t know yet the end Because this tale isn’t finished yet Monitoring OVH @LostInBrittany

It begins with a mission Build a metrics platform for OVH Monitoring OVH @LostInBrittany

Why do we need metrics? To make better decisions by using numbers Monitoring OVH @LostInBrittany

Why do we need metrics? We want our code to add value Monitoring OVH @LostInBrittany

Why do we need metrics? We need to make better decisions about our code Monitoring OVH @LostInBrittany

Why do we need metrics? Code adds value when it runs not when we write it Monitoring OVH @LostInBrittany

Why do we need metrics? We need to know what our code does when it runs Monitoring OVH @LostInBrittany

Why do we need metrics? We can’t do this unless we measure it Monitoring OVH @LostInBrittany

Why do we need metrics? We have a mental model of what our code does Monitoring OVH @LostInBrittany

Why do we need metrics? This representation can be wrong Monitoring OVH @LostInBrittany

Why do we need metrics? We can’t know until we measure it Monitoring OVH @LostInBrittany

Find the bottleneck ‘’ “The app is slow.” - User Monitoring OVH @LostInBrittany

Find the bottleneck ‘’ “The app is slow.” - User “The page takes 500ms!” - Ops Monitoring OVH @LostInBrittany

Find the bottleneck ? SQL Query? Template Rendering? Session Storage? Monitoring OVH @LostInBrittany

Find the bottleneck ? We don’t know Monitoring OVH @LostInBrittany

Find the bottleneck

With observability: SQL Query………………………….53ms Template Rendering……….1ms Session Storage……………315ms Monitoring OVH @LostInBrittany

Find the bottleneck

With observability: SQL Query………………………….53ms Template Rendering……….1ms Session Storage……………315ms Monitoring OVH @LostInBrittany

Why do we need metrics? We improve our mental model by measuring what our code does Monitoring OVH @LostInBrittany

Why do we need metrics? We use our mental model to decide what to do Monitoring OVH @LostInBrittany

Why do we need metrics? A better mental model makes us better at deciding what to do Monitoring OVH @LostInBrittany

Why do we need metrics? Better decisions makes us better at generating value Monitoring OVH @LostInBrittany

Why do we need metrics? Measuring make your App better Monitoring OVH @LostInBrittany

It began with a mission Build a metrics platform for OVH Monitoring OVH @LostInBrittany

A metrics platform for OVH For all OVH Monitoring OVH @LostInBrittany

Building OVH Metrics One Platform to unify them all, One Platform to find them, One Platform to bring them all and in the Metrics monitor them Monitoring OVH @LostInBrittany

What is OVH Metrics? Managed Cloud Platform for Time Series Monitoring OVH @LostInBrittany

OVH monitoring story We had lots of partial solutions… Monitoring OVH @LostInBrittany

OVH monitoring story One Platform to unify them all What should we build it on? Monitoring OVH @LostInBrittany

OVH monitoring story Including a really big Monitoring OVH @LostInBrittany

OpenTSDB drawbacks OpenTSDB RowKey Design ! Monitoring OVH @LostInBrittany

OpenTSDB Rowkey design flaws ● .regex. => full table scans ● High cardinality issues (Query latencies) We needed something able to manage hundreds of millions time series OpenTSBD didn’t scale for us Monitoring OVH @LostInBrittany

OpenTSDB other flaws ● ● ● ● ● Compaction (or append writes) /api/query : 1 endpoint per function? Asynchronous Unauthenticated … Monitoring OVH @LostInBrittany

Scaling OpenTSDB Monitoring OVH @LostInBrittany

Metrics needs First need: To be massively scalable Monitoring OVH @LostInBrittany

Analytics is the key to success Fetching data is only the tip of the iceberg Monitoring OVH @LostInBrittany

Analysing metrics data To be scalable, analysis must be done in the database, not in user’s computer Monitoring OVH @LostInBrittany

Metrics needs Second need: To have rich query capabilities Monitoring OVH @LostInBrittany

Enter Warp 10… Open-source Time series Database Monitoring OVH @LostInBrittany

More than a Time Series DB Warp 10 is a software platform that ● Ingests and stores time series ● Manipulates and analyzes time series Monitoring OVH @LostInBrittany

Manipulating Time Series with Warp 10 A true Time Series analysis toolbox ○ Hundreds of functions ○ Manipulation frameworks ○ Analysis workflow Monitoring OVH @LostInBrittany

Manipulating Time Series with Warp 10 A Time Series manipulation language WarpScript Monitoring OVH @LostInBrittany

Did you say scalability? From the smallest to the largest… Monitoring OVH @LostInBrittany

More Warp 10 goodness ● Secured & multi tenant ● Synchronous (transactions) ● In memory Index ● Better Performance ● No cardinality issues ● Better Scalability ● Lockfree ingestion ● Versatile ● WarpScript Query Language (standalone, distributed) ● Support more data types Monitoring OVH @LostInBrittany

OVH Observability Metrics Platform Monitoring OVH @LostInBrittany

Metrics Data Platform Monitoring OVH @LostInBrittany

Building an ecosystem From Warp 10 to OVH Metrics Monitoring OVH @LostInBrittany

Multi-protocol Why to choose? We need them all! Monitoring OVH @LostInBrittany

Open source monitoring tools Monitoring OVH @LostInBrittany

Open source monitoring tools Why choose? Let’s support all of them! Monitoring OVH @LostInBrittany

Metrics Platform Monitoring OVH @LostInBrittany

Metrics Platform graphite influx https:// opentsdb .<region>.metrics.ovh.net prometheus warp10 … Monitoring OVH @LostInBrittany

Metrics Live In-memory, high-performance Metrics instances Monitoring OVH @LostInBrittany

In-memory: Metrics live +120 million of writes/s Monitoring OVH @LostInBrittany

In-memory: Metrics live Monitoring OVH @LostInBrittany

Monitoring is only the beginning OVH Metrics answer to many other use cases Monitoring OVH @LostInBrittany

Use cases families • • • • Billing Monitoring IoT (e.g. bill on monthly max consumption) ……………………………………………..……. (APM, infrastructure,appliances,…) …..…………………………… (Manage devices, operator integration, …) …………………………………………….…………………. Geo Location (Manage localized fleets) ……..………………… Monitoring OVH @LostInBrittany

Use cases • • • • • • DC Temperature/Elec/Cooling map Pay as you go billing (PCI/IPLB) GSCAN Monitoring ML Model scoring (Anti-Fraude) Pattern Detection for medical applications Monitoring OVH @LostInBrittany

SREing Metrics With a great power comes a great responsibility Monitoring OVH @LostInBrittany

Metrics’ own metrics 432 000 000 000 datapoints / day Monitoring OVH @LostInBrittany

Metrics’ own metrics 10 Tb / day Monitoring OVH @LostInBrittany

Metrics’ own metrics 5 000 000 dp/s Monitoring OVH @LostInBrittany

Metrics’ own metrics 500 000 000 series Monitoring OVH @LostInBrittany

Our clusters size GRA: BHS: ● 150 nodes ● 2 PB ● 1.1 Gbps ● 30 nodes ● 400 TB ● 120 Mbps Monitoring OVH @LostInBrittany

Our cluster architecture Monitoring OVH @LostInBrittany

Detecting errors Before it’s too late Monitoring OVH 85 @LostInBrittany

Extract errors from logs Monitoring OVH @LostInBrittany

Tailor Forward logs and extract metrics! Monitoring OVH @LostInBrittany

Monitoring the JVM Monitoring OVH @LostInBrittany

Documentation Monitoring OVH @LostInBrittany

JVM GC The good, the bad and the ugly Monitoring OVH @LostInBrittany

The good Monitoring OVH @LostInBrittany

The bad Monitoring OVH @LostInBrittany

… and the ugly #java #jdk11 #zgc Monitoring OVH @LostInBrittany

Monitoring HBase Monitoring OVH @LostInBrittany

Number of open regions Monitoring OVH @LostInBrittany

Queues length Monitoring OVH @LostInBrittany

Number of read and write requests Monitoring OVH @LostInBrittany

Preserve data locality Monitoring OVH @LostInBrittany

Host health Monitoring OVH @LostInBrittany

Pokédex Inventory all animals. Monitoring OVH @LostInBrittany

Merging all data sources Monitoring OVH @LostInBrittany

Global visualization Monitoring OVH @LostInBrittany

Correlate information Monitoring OVH @LostInBrittany

Sacha The best tamer Monitoring OVH @LostInBrittany

An awesome CLI Monitoring OVH @LostInBrittany

Retrieving bare informations Monitoring OVH @LostInBrittany

Create region map Monitoring OVH @LostInBrittany

Move region to another region server Monitoring OVH @LostInBrittany

Drain regions of the region server Monitoring OVH @LostInBrittany

Managing multiple hardware profiles Monitoring OVH @LostInBrittany

Balance the cluster Monitoring OVH @LostInBrittany

Conclusion That’s all folks! Monitoring OVH @LostInBrittany