Slides: Introducing the new ClusterControl 1.2.10 for MySQL, MongoDB and Postgres

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ClusterControl 1.2.10

June 2015

Johan Andersson

CTO, Severalnines

[email protected]

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Customers

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Copyright Severalnines AB

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What Problems do we Address?

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Copyright 2012 Severalnines AB

Manage Scale

Monitor Deploy

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Monitoring - Beyond Nagios

!  What do you do when the application is slow?

!  Is it Disk? CPU? RAM? Badly written queries?

!  What are the symptoms? (Replication queues, Page Faults, locks, # connections, deadlocks …)

!  How do you avoid problems?

!  How do you plan for capacity?

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Management - Beyond Monitoring

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ClusterControl DSL - Automation Programs

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What’s new in 1.2.10?

!  ClusterControl DSL (Domain Specific Language)

!  Integrated Developer Studio (Developer IDE)

!  Database Advisors/JS bundle

!  On-premise Deployment of MySQL / MariaDB Galera Cluster (New implementation)

!  Detection of long running and deadlocked transactions (Galera)

!  Detection of most advanced (last committed) node in case of cluster failure (Galera)

!  Registration of manually added nodes with ClusterControl

!  Failover and Slave Promotion in MySQL 5.6 Replication setups

!  General front-end optimizations

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Register Manually Added Nodes

!  Add an existing node to the UI

!  Useful if a node has been created outside of ClusterControl

!  E.g: Puppet, Chef, Ansible


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Long Running TX Log

!  Keep a log of long running transactions

!  Configurable timeout (seconds) in cmon.cnf:

!  10 seconds by default

!  db_long_query_time_alarm=10

!  Easily view what transaction are causing the deadlocks.

!  Complete INNODB STATUS for detailed debugging.


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Galera - Assisted Manual Cluster Recovery

!  Find out which is the most advanced node in the Galera Cluster.

!  Bootstrap the Cluster from this node

!  Useful when Auto Cluster Recovery is disabled.


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5.6 Replication – Master Promotion

!  New Job to promote a Slave to become a new Master. !  Only supported for GTID based replication (and not

MariaDB’s variant)

!  Combine with Semi-sync replication for loss-free failovers.


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ClusterControl DSL

!  DSL = Domain Specific Language

!  Based on JavaScript and allows the user to: !  Create Advisors !  Helper programs !  Auto Tuners/Scalers

!  Access internal data structures of ClusterControl !  State information of managed nodes !  E.g time series data and applying statistical functions

!  Online documentation: !  http://www.severalnines.com/downloads/cmon/cmon-

docs/current/implang.html

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ClusterControl DSL

!  Execute SQL commands on remote db nodes

!  Execute bash scripts on remote hosts

!  Process returned data

!  Create Alarms and Notifications

!  Graphs


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Developer Studio

!  A web based IDE allowing the user to !  create

!  edit

!  compile

!  run

!  test

!  debug

!  schedule JS programs

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JS/Advisor Bundle

!  ClusterControl ships with a default advisor bundle !  MIT License !  Available on GitHub

!  https://github.com/severalnines/s9s-advisor-bundle

!  Rules and alerts on !  security settings !  system checks (NUMA, Disk, CPU) !  queries !  innodb !  connections !  performance schema !  Galera configuration !  NDB memory usage

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Getting Started !  Dedicated VM for the controller

!  Specs !  2 CPU cores !  2-4GB RAM !  20GB diskspace

!  No agents !  Host stats gathered via SSH

!  Installation !  YUM/APT !  Setup SSH access to Controller itself and DB nodes !  http://repo.severalnines.com/

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QA

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Slides: Introducing the new ClusterControl 1.2.10 for MySQL, MongoDB and Postgres

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