Skip to main content

Using Elastic File System for Out-Scaled Deployers

Image
By

In a scaled-out scenario for Content Delivery Deployers, it is possible to setup a shared file system as the Binary Storage medium for incoming transport packages.

The Deployer Receiver writes these transport package zip files into the Binary Storage folder. Then it is up to the Deployer Workers to read these zip files as they deployer/underploy the content.

Below, we present the configurations for an AWS Elastic File System (EFS) acting as storage medium for transport packages.

Start by simply creating an EFS in AWS console. This whole step might take you 5 minutes :)



AWS is going to generate a hostname where this file system is available and it will give instructions on how to mount it in your server.

For example, in Linux CentOS, one can mount an FS using the mount command. The following command will mount the EFS drive under folder /efs01 on the current server:
sudo mount -v -t nfs4 -o nfsvers=4.1,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2 fs-a17668.efs.eu-west-1.amazonaws.com:/ /efs01


Another way of performing permanent mounts, is to add the following line to file /etc/fstab:
fs-a17668.efs.eu-west-1.amazonaws.com:/ /efs01 nfs4 nfsvers=4.1,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2,_netdev 0 0

Once mounted, we can verify the EFS drive state issuing the following command:

mount | grep efs01

 The response should look something like this:

fs-a17668.efs.eu-west-1.amazonaws.com:/ on /efs01 type nfs4 (rw,relatime,vers=4.1,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=10.10.2.173,local_lock=none,addr=10.10.2.145,_netdev)

At this moment, the EFS drive is ready and we can configure it in our deployer-conf.xml:
    <BinaryStorage Id="PackageStorage" Adapter="FileSystem">

        <Property Name="Path" Value="/efs01/deployer-queues"/>
    </BinaryStorage>

The same BinaryStorage node must be present on the Deployer Receiver as well as on all Deployer Workers.



Labels:

Comments

Post a Comment

Popular posts from this blog

Running sp_updatestats on AWS RDS database

By
Part of the maintenance tasks that I perform on a MSSQL Content Manager database is to run stored procedure sp_updatestats . exec sp_updatestats However, that is not supported on an AWS RDS instance. The error message below indicates that only the sa  account can perform this: Msg 15247 , Level 16 , State 1 , Procedure sp_updatestats, Line 15 [Batch Start Line 0 ] User does not have permission to perform this action. Instead there are several posts that suggest using UPDATE STATISTICS instead: https://dba.stackexchange.com/questions/145982/sp-updatestats-vs-update-statistics I stumbled upon the following post from 2008 (!!!), https://social.msdn.microsoft.com/Forums/sqlserver/en-US/186e3db0-fe37-4c31-b017-8e7c24d19697/spupdatestats-fails-to-run-with-permission-error-under-dbopriveleged-user , which describes a way to wrap the call to sp_updatestats and execute it under a different user: create procedure dbo.sp_updstats with execute as 'dbo' as...
2 comments
Read more

REL Standard Tag Library

By
The RSTL is a library of REL tags providing standard functionality such as iterating collections, conditionals, imports, assignments, XML XSLT transformations, formatting dates, etc. RSTL distributable is available on my Google Code page under  REL Standard Tag Library . Always use the latest JAR . This post describes each RSTL tag in the library explaining its functionality, attributes and providing examples. For understanding the way expressions are evaluated, please read my post about the  Expression Language used by REL Standard Tag Library . <c:choose> / <c:when> / <c:otherwise> Syntax:     <c:choose>         <c:when test="expr1">             Do something         </c:when>         <c:when test="expr2">             Do something else         </c:when...
2 comments
Read more

Publish Binaries to Mapped Structure Groups

By Unknown
Today's TBB of the Week comes from the high demand in the field to publish binary assets to different mapped Structure Groups. By default SDL Tridion offers two ways of publishing binaries: All binaries publish to a folder defined in your Publication properties; All binaries rendered by a given template publish to a folder corresponding to a given Structure Group; In my view, both cases are terrible, over-simplified and not representing a real use-case. Nobody in the field wants all binaries in one folder and nobody separates binary locations by template. Instead, everybody wants a mapping mechanism that takes a binary and publishes it to a given folder, defined by a Structure Group, and this mapping is done using some kind of metadata. More often than not, the metadata is the TCM Folder location of the Multimedia Component. I have seen this implemented numerous times. So the solution to publish binaries to a given location implies finding a mapping from a TCM Folder to a...
10 comments
Read more