<div dir="ltr">Hi Stephen, <div><br></div><div>I may not have been clear, so I'll go into a bit more detail on our setup. Right now we have a single web server that houses our Joomla website. The site itself is being used by more than 20,000 teachers to share lesson plans, content ideas and upload videos of them teaching for professional development credit. We've exceeded the capabilities of a single web server (our DB server was converted to a MySQL cluster in November) and need to add a second web server to handle the load. (Side note: we're using vCloud Air for these servers.) </div><div><br></div><div>Due to the massive amount of user created content (100GB or so), trying to sync new content across web servers will be rather complicated and somewhat messy, so the idea was to move the content to an iSCSI VM to centralize the storage for multiple front ends to access. I don't really need a storage cluster, so much as a single location for this content. I'm rather limited in how Joomla is able to access this data since it's notorious for hardcoding the locations used for that data. For example the profile images and shared pictures are all in the images/ directory. Without re-writing that section of joomla's code, moving the data out of that folder won't work. While a storage cluster might be in the cards later on, a single storage VM will work for now. </div><div><br></div><div>Does this help clarify my problem?</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Feb 1, 2016 at 3:44 PM, Steven Jones <span dir="ltr"><<a href="mailto:Steven.Jones@vuw.ac.nz" target="_blank">Steven.Jones@vuw.ac.nz</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p>Hi Mark,</p>
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<p>Architecture wise, no it may not be your only option.</p>
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<p>Is there a reason to run iSCSI? ie have you looked at gluster? I have run 3 node Ubuntu Gluster cluster (converted to Centos currently) acting as a backend for VMware and KVM hosts. </p>
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<p>Gluster's dis-advantage is the writes are equivalent of 30~40% of a single disk's speed but the read are as fast or faster (for multiple nodes) making it good enough for web and streaming. Advantages, it also with 3 nodes offers failover and a distributed
raid 1 to protect against data loss. It is also very cheap to do needing no fancy and expensive hardware. </p>
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<p>Not sure why you need GFS if only one computer is uploading while other multiple (web) servers read? Even if you have multiple writes then Gluster strikes me as a potentially better solution for you as the write doesnt strike me as being significant.</p>
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<p>regards</p>
<p>Steven</p>
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<div dir="ltr"><font style="font-size:11pt" color="#000000" face="Calibri, sans-serif"><b>From:</b> <a href="mailto:ubuntu-users-bounces@lists.ubuntu.com" target="_blank">ubuntu-users-bounces@lists.ubuntu.com</a> <<a href="mailto:ubuntu-users-bounces@lists.ubuntu.com" target="_blank">ubuntu-users-bounces@lists.ubuntu.com</a>> on behalf of Mark Haney <<a href="mailto:mark.haney@vifprogram.com" target="_blank">mark.haney@vifprogram.com</a>><br>
<b>Sent:</b> Tuesday, 2 February 2016 8:51 a.m.<br>
<b>To:</b> Ubuntu user technical support, not for general discussions<br>
<b>Subject:</b> iSCSI + GFS for web servers</font>
<div> </div>
</div><div><div class="h5">
<div>
<div dir="ltr">Anyone know of a decent howto/tutorial on how to setup GFS2 in Ubuntu for an iSCSI VM? I want to centralize our web server user content using iSCSI and I will need a second web server to be able to see the data as its uploaded, so my only option
is to setup GFS2. I used GFS a half-decade or so ago, but have never used GFS2.
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<div>Has anyone setup something similar and can share their knowledge with me?</div>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><p><span style="font-size:10.0pt;font-family:Arial;color:#333333">Mark Haney
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