Introducing Cloud Development with Mantl

© 2015 Cisco and/or its affiliates. All rights reserved. Cisco PublicPresentation ID

We’re ready. Are you?


Introducing Cloud Development with Mantl

Brian Hicks (Mantl Core Committer)Ryan Eschinger (Mantl Core Committer)

© 2015 Cisco and/or its affiliates. All rights reserved. Cisco PublicPresentation ID © 2015 Cisco and/or its affiliates. All rights reserved. Cisco PublicPresentation ID

• Introduction

• Mesos

• Frameworks

• Docker

• Consul

• Mantl

Agenda

3


Introduction

4

Brian Hicks Ryan Eschinger


MesosWhat is it?

Program against your datacenter like it’s a single pool of resourcesApache Mesos abstracts CPU, memory, storage, and other compute resources away from machines (physical or virtual), enabling fault-tolerant and elastic distributed systems to easily be built and run effectively.

5


Mesos2-Tier Scheduler

Frameworks:• Receive resources offered by the

master nodes• Schedule work on offered

resources• Are notified if workloads fail via

internal and external mechanisms

6

Mesos:• Determines resources available

on nodes in the cluster• Offers those resources to

frameworks• Keep track of node status (online,

offline, remaining resources)


MesosArchitecture

Slaves (Agents in 1.0):• Tell the masters which resources

are available• Run tasks on claimed resources

7

Masters:• Communicate with Schedulers• Keep track of Agents• Provide a UI for Ops / DevOps


MesosArchitecture

Executor:• A binary or script that runs on the

slave to perform work• Runs in an isolated environment

(can use Docker)

8

Framework (Scheduler):• Schedules work based on offers

received• Domain specific


Framework Demos

9


MarathonWhat is it?

10

A cluster-wide init and control system for services in cgroups and Docker containersMarathon is an Apache Mesos framework for long-running applications. Given that you have Mesos running as the kernel for your datacenter, Marathon is the init or upstart daemon.


MarathonOverview

11

• Developed by Mesosphere• Controls app resources, ports,

environment variables, and scaling

• Runs “long-running” tasks


CassandraWhat is it?

Distributed database designed for scalability and high availabilityApache Cassandra is an open source distributed database management system designed to handle large amounts of data across many commodity servers, providing high availability with no single point of failure.

12


CassandraOverview

13

• Designed to handle big data workloads across multiple nodes (ring) with no single point of failure

• Data is distributed among all nodes in the cluster• Uses the Gossip protocol for peer-to-peer communication• Eventually consistent (C): prioritizes Availability and Partitioning tolerance

(AP)


CassandraMesos Framework

14

• Automates bootstrapping and operations of Cassandra clusters

• Bootstraps initial seed nodes and expands cluster to desired number of nodes

• Runs periodic operational tasks • Restart, remove, and replace nodes on failure• Self-contained: does not require specialized software

installed on agent nodes


SparkWhat is it?

A fast and general engine for large-scale data processingApache Spark is an open source, high performance big data processing framework. It provides high-level APIs in Java, Scala, Python, and R. Spark includes higher-level libraries, including support for SQL queries, streaming data, machine learning and graph processing.

15


SparkOverview

16

• Originally developed at UC Berkeley in 2009• Up to 100x faster than Hadoop for large scale data processing• Execution engine works both in-memory and on-disk• Architecture

• Data storage: supports Hadoop-compatible data sources like HDFS, HBase, Cassandra, etc.

• API: Scala, Java, Python, and R. • Resource Management: standalone, Mesos, Yarn


Sparkon Mesos

17

• Runs as a framework• Supports the Docker containerizer• 2-level scheduling: Spark can make decisions about the

offers it receives from Mesos• Enables sophisticated scheduling scenarios


SparkRun Modes

18

• Coarse-grained• Runs long-running Spark executors on every node• Fast startup, better for interactive sessions, but can

be inefficient• Fine Grained

• Launches a Spark executor per task• Slower startup but can utilize resources better


DockerWhat is it?

A shipping container system for applicationsA container virtualization platform that abstracts underlying Linux resource isolation technologies like cgroups and kernel namespaces. Allows developers to build, package, and ship applications that can run anywhere*.

*anywhere that runs a 3.10+ Linux kernel

19


DockerOverview

20

• Compared to virtual machines, containers are smaller, lighter weight, more portable, and easier to deploy

• Package an application, along with all of its dependencies, in a single artifact

• Use the same artifact throughout development, testing, and production• Reduces concerns about the compatibility in different environments


Consul

21


ConsulDiscovery (HTTP)

22

curl localhost:8500/v1/catalog/service/marathon[{ "Address": "10.0.113.214", "Node": "mantl-control-01", "ServiceAddress": "", "ServiceID": "marathon", "ServiceName": "marathon", "ServicePort": 18080, "ServiceTags": ["marathon"]}]


ConsulDiscovery (DNS)

23

dig +short marathon.service.consul10.0.113.21410.0.220.5410.0.131.25

dig +short marathon.service.consul SRV1 1 18080 mantl-control-02.node.mantl.consul1 1 18080 mantl-control-01.node.mantl.consul1 1 18080 mantl-control-03.node.mantl-consul


ConsulKey/Value Store

24

curl -X PUT -d world http://localhost:8500/v1/kv/hellotrue


ConsulKey/Value Store

25

curl -X GET http://localhost:8500/v1/kv/hello[{ "CreateIndex": 223, "Flags": 0, "Key": "hello", "LockIndex": 0, "ModifyIndex": 223, "Value": "d29ybGQ="}]


Consulconsul-template

26

global maxconn {{or (key "service/haproxy/maxconn") 256}} debug

{{range services}}frontend {{.Name}} bind *:{{key (printf "ports/%s" .Name)}}{{range service .Name}} server {{.Node}} {{.Address}}:{{.Port}}{{end}}{{end}}


Mantl

27

Introducing Cloud Development with Mantl

Technology

Transcript of Introducing Cloud Development with Mantl