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Displaying posts with tag: Other (reset)

How to Migrate Your Application to Amazon Virtual Private Cloud without Downtime
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March 27, 2014 By Severalnines

With datacenters being stretched by resource-intensive applications, more and more businesses are outgrowing their existing in-house capacity and having to reconfigure their IT operations. But how do you migrate a busy application to a totally new data center without downtime? How will the application scale in a virtualized cloud environment? And how do you guard against cloud server failures and keep a high level of uptime?



In this example, we will show you how to migrate a Web application (Wordpress) from a local data center to a AWS VPC. Without downtime even! 


Main steps:

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    Clustering SugarCRM with MySQL Galera for High Availability and Performance
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    March 20, 2014 By Severalnines

    SugarCRM is the leader in open source CRM systems, and has been adopted by some of the largest firms, including IBM. The CRM software includes all sales, marketing and support tools out of the box, and can also be extended to integrate social media sources. For those depending on SugarCRM, especially when deploying in cloud environments with lower SLAs, having a high availability architecture can make a lot of sense. 

    In this blog post, we will show you how to cluster SugarCRM Community Edition

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    Webinar Replay & Slides: Migrating to MySQL, MariaDB Galera and/or Percona XtraDB Cluster
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    March 13, 2014 By Severalnines

    Thanks to everyone who attended this week’s webinar; if you missed the sessions or would like to watch the webinar again & browse through the slides, they are now available online.


    Special thanks to Seppo Jaakola, CEO at Codership, the creators of Galera Cluster, and to Johan Andersson, CTO at Severalnines, for their presentations and the live demo.


    Webinar topics discussed: 

    • Application use cases for Galera
    • Schema design
    • Events and Triggers
    • Query design
    • Migrating the schema
    • Loading initial data into the
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    How to use the ClusterControl REST API to automate your Database Cluster
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    March 11, 2014 By Severalnines

    For ops folks with multiple environments and instances to manage, a fully programmable infrastructure is the basis for automation. ClusterControl exposes all functionality through a REST API. The web UI also interacts with the REST API to retrieve monitoring data (cluster load, alarms, backup status, etc.) or to send management commands (add/remove nodes, run backups, upgrade a cluster, add/remove load balancer, etc.). The API is written in PHP and runs under Apache. The diagram below illustrates the architecture of ClusterControl.

    Figure: ClusterControl

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    Resources for HA Database Clusters: New ClusterControl Release, Galera Migration Webinar & Blog Resources
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    March 6, 2014 By Severalnines


    Check Out Our Latest Resources for MySQL, MariaDB & MongoDB Clusters


    Here is a summary of resources & tools that we’ve made available to you in the past weeks. If you have any questions on these, feel free to contact us!


    ClusterControl 1.2.5 released

    We are pleased to announce the release of ClusterControl 1.2.5, which now supports MySQL 5.6 and Global Transaction IDs to enable cross-datacenter and cloud replication over high latency networks. Galera users are now able to assign nodes to their

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    How to Set Up Asynchronous Replication from Galera Cluster to Standalone MySQL server with GTID
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    March 3, 2014 By Severalnines

    Hybrid replication, i.e. combining Galera and asynchronous MySQL replication in the same setup, became much easier with MySQL 5.6 and GTID. Although it was fairly straightforward to replicate from a standalone MySQL server to a Galera Cluster, doing it the other way round (Galera → standalone MySQL) was a bit more challenging. At least until MySQL 5.6 and GTID. 

    There are a few good reasons to attach an asynchronous slave to a Galera Cluster. For one, long-running reporting/OLAP type queries on a Galera node might slow down an entire cluster, if the reporting load is so intensive that the node has to

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    MongoDB and Hadoop - Stockholm MongoDB User Group Meetup - Monday, March 3, 2014
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    February 27, 2014 By Severalnines


    Stockholm MongoDB User Group Meetup: “MongoDB and Hadoop”

    Monday, March 3, 2014 starting @ 5:00 PM


    Join us next Monday as we host the Stockholm MongoDB User Group Meetup in Kista, or the Wireless Valley as it is also referred to. 


    Our very own Vinay Joosery will be speaking about how to best automate the management & deployment of database clusters, specifically MongoDB clusters though the same principles apply for MySQL, MariaDB and Percona XtraDB based clusters. Henrik Ingo of MongoDB will be talking about Analytics with MongoDB & Hadoop. And Jim Dowling, a Senior Researcher at the Swedish Institute of Computer Science, will talk

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    How to Deploy Galera Cluster for MySQL using Docker Containers
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    February 18, 2014 By Severalnines

    Virtual Machines are great, and very useful when trying out new software. However, they might be an unnecessarily heavyweight solution when testing clusters, especially if these consist of multiple nodes running exactly the same software. Each VM runs a full-blown OS image. On the other hand, Linux Containers (LXC) are an efficient alternative to OS-level virtualization and can run multiple isolated systems on a single host. Docker is a wrapper around LXC, it automates the deployment of applications inside containers. 

    A notable advantage if you run with Docker + LXC is you can run many containers on a single host.

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    Webinar: Migrating to MySQL, MariaDB Galera and/or Percona XtraDB Cluster
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    February 13, 2014 By Severalnines


    Galera is slowly but surely establishing itself as a credible replacement for traditional MySQL master-slave architectures. 

    The benefits are clear - a true multi-master InnoDB setup with built-in fail-over, potentially across data centers. 

    But how do you migrate? Does the schema or application change? What are the limitations? Can migration be done online, without service interruption? What are the potential risks, and how to address those?


    Webinar: Migrating to MySQL, MariaDB Galera and/or Percona XtraDB Cluster


    Tuesday, March

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    How to Cluster Liferay with MySQL Galera and Ceph for High Availability and Performance
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    February 3, 2014 By Severalnines

    Liferay is an open-source content management system written in Java. It is used by a number of high traffic sites, as this survey suggests. 

    Clustering Liferay and other components such as the database and the file system is a good way to handle the performance requirements of a high traffic site. The latest Liferay version has introduced features that simplify clustering, such as built-in support for Ehcache clustering, Lucene replication, read/write splitting capabilities for database (in case if you run on

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    10 Newer Entries Showing entries 31 to 40 of 80 10 Older Entries

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