Language Selection

English French German Italian Portuguese Spanish

New Content/Layout OK?

Yes
95% (20 votes)
No
5% (1 vote)
Total votes: 21

Varnish Proxy

Silly me, a poll would not work on the new server. I forgot that with the Varnish cache proxy at the front almost all visitors arrive from the same IP address (the proxy), which means that Drupal would allocate just one vote to all (except registered and presently logged in users). With Drupal upgrade we can perhaps find polling software that overcomes this.

rpaf

You must use mod_rpaf to fix this problem that Varnish introduces.
See eg https://www.varnish-cache.org/lists/pipermail/varnish-misc/2008-September/016470.html
mod_rpaf for EL6 64bit here: http://centos.alt.ru/repository/centos/6/x86_64/mod_rpaf-0.6-2.el6.x86_64.rpm

Proxy

Thank, we will look into it. Currently, a lot of stuff other than the poll (e.g. views being counted) are not compatible with Varnish and it makes it look as though not many people visit and can participate in the site.

For sheer stats you could use

For sheer stats you could use an external (i.e. not cached by varnish) service, such as Google Analytics or run your own Piwik.

Piwik

Google Analytics is spyware, but Piwik would be a possibility (Stallman recently told me that it's good). Can it be installed on a cache proxy? I'd have to gain access to it first. Either way, this would not facilitate per-post page request count. Susan had it set up with a module, but it's no longer working correctly. In turn, rating/sorting posts by popularity is no longer possible, and that's the real downside (the front page can no longer list popular items for today).

The problem is not just that IP addresses are not unique. Some requests are never seen by the CMS and Apache.

For the non-unique addresses

For the non-unique addresses look at mod_rpaf, it was made for this situations.
Is this drupal6 or 7? With 6 varnish integration sucks from what I've seen.

See also
https://drupal.org/project/varnish
https://fourkitchens.atlassian.net/wiki/display/TECH/Configure+Varnish+3+for+Drupal+7

Agreed on Google Analytics. You can just install Piwik on the same host and tell Varnish either not to cache it or you can just set its virtualhost on a port other than 80 so it bypasses Varnish completely.

Varnish

Thanks for the pointers.

Yes, it's Drupal 6 and there are other issues that I am beginning to see, such as lack of updates from the RSS feeds around the page (I am currently investigating this, maybe it's related to a cron job or module config although I very much doubt the latter as I haven't changed configs).

Non-unique addresses could be bypassed as an issue even by writing random IP addresses, but that would enable easy poll rigging. I guess it's not essential for operation of the site, but it's a nice-to-have...

From Drupal.org: "This module provides integration between your Drupal site and the Varnish HTTP Accelerator, an advanced and very fast reverse-proxy system. Basically, Varnish handles serving static files and anonymous page-views for your site much faster and at higher volumes than Apache, in the neighborhood of 3000 requests per second."

I have had such issues with Varnish on top of WordPress and MediaWiki (pages served improperly from cache) and it all makes me wonder if removing Varnish altogether is the best way to proceed.

As for Piwik, I have never tried it before, so I will look into it.

I would keep Varnish on for

I would keep Varnish on for static files (css, js, jpeg etc) and to clean up HTTP traffic (Varnish will not forward incomplete or malformed HTTP requests to the backend, it should also be the front line against synfloods etc).

Here's a sample of what I use (test it first, I'm just beginning with Varnish myself)

director default dns {
.list = {
.port = "8080";
.connect_timeout = 5s;
.first_byte_timeout = 600s;
.between_bytes_timeout = 600s;
.max_connections = 10000;
"172.16.1.53"/32;
}
}
sub vcl_recv {
if (req.url ~ "\.(png|gif|jpg|swf|css|js)$") {
return(lookup);
}
}
sub vcl_fetch {
if (req.url ~ "\.(png|gif|jpg|swf|css|js)$") {
unset beresp.http.set-cookie;
}
if (req.restarts == 0) {
if (req.http.x-forwarded-for) {
set req.http.X-Forwarded-For =
req.http.X-Forwarded-For + ", " + client.ip;
} else {
set req.http.X-Forwarded-For = client.ip;
}
}
}

Then install mod_rpaf and make sure your Apache is listening on port 8080 and add this to /etc/httpd/conf.d/rpaf.conf:
LoadModule rpaf_module modules/mod_rpaf-2.0.so

RPAFenable On
RPAFproxy_ips 127.0.0.1 IPs_OF_THE_SERVER
RPAFsethostname On
RPAFheader X-Forwarded-For

PS: looks like drupal is messing with my comments, here's a text version http://fpaste.org/74672/raw/

Thanks

Thanks, I will look at it and into it in the weekend.

RSS feeds

The Piwik demo looks impressive, I have just given them a word of endorsement.

I am still trying to resolve some other issues we've identified.

I think I found the source of the issue above (RSS feeds). It seems like any external site access is denied by default, which helps explain why RSS feeds cannot be retrieved by the Drupal part of the site:


[root@tuxmachines ~]# wget lxer.com
--2014-02-05 04:34:37--  http://lxer.com/
Resolving lxer.com... 108.166.170.174
Connecting to lxer.com|108.166.170.174|:80... failed: Connection refused.
[root@tuxmachines ~]# wget linuxtoday.com
--2014-02-05 04:34:54--  http://linuxtoday.com/
Resolving linuxtoday.com... 70.42.23.121
Connecting to linuxtoday.com|70.42.23.121|:80... failed: Connection refused.

Looks like a firewall issue

Looks like a firewall issue at the first glance.

Firewall

Nux wrote:

Looks like a firewall issue at the first glance.

Yes, it was a simply issue to tackle. It works now.

Pageview count and polls

I'll have a look and see if configuration can solve not just the polling issue but also pageview count. The site of this module is down and it seems like it may require configuration on the cache server too.

More in Tux Machines

Open source docks with mainstream vendors

Open source and mainstream are joining forces this week as the Docker software containerisation platform comes under the spotlight at technology-focused network and information sessions in Cape Town and Johannesburg. "The diversity of our partners at the event − Docker, Microsoft Azure, Atlassian, SUSE and HPE – is a clear indication of the excitement around the Docker platform," says Muggie van Staden, MD of Obsidian Systems. Read more

What’s the best Linux firewall distro of 2017?

You don’t have to manage a large corporate network to use a dedicated firewall. While your Linux distro will have an impressive firewall – and an equally impressive arsenal of tools to manage it – the advantages don’t extend to the other devices on your network. A typical network has more devices connected to the internet than the total number of computers and laptops in your SOHO. With the onslaught of IoT, it won’t be long before your router doles out IP addresses to your washing machine and microwave as well. The one thing you wouldn’t want in this Jetsonian future is having to rely on your router’s limited firewall capabilities to shield your house – and everyone in it – from the malicious bits and bytes floating about on the internet. A dedicated firewall stands between the internet and internal network, sanitising the traffic flowing into the latter. Setting one up is an involved process both in terms of assembling the hardware and configuring the software. However, there are quite a few distros that help you set up a dedicated firewall with ease, and we’re going to look at the ones that have the best protective open source software and roll them into a convenient and easy to use package. Read more

Zorin OS 12 Business Edition Launches with macOS, Unity, and GNOME 2 Layouts

Three months after launching the biggest release ever of the Ubuntu-based operating system, the Zorin OS team is today announcing the availability of Zorin OS 12 Business Edition. Based on Ubuntu 16.04 LTS (Xenial Xerus) and powered by the long-term supported Linux 4.4 kernel, Zorin OS 12 Business Edition ships with the innovative Zorin Desktop 2.0 desktop environment that offers multiple layouts for all tastes. These means that you can make your Zorin OS 12 desktop look like macOS, GNOME 2, or Unity with a click. Read more

GNOME and Other Software

  • Nautilus 3.24 – The changes
    Since Nautilus was created, if a user wanted to open a folder where the user didn’t have permissions, for example a system folder where only root has access, it was required to start Nautilus with sudo. However running UI apps under root is strongly discouraged, and to be honest, quite inconvenient. Running any UI app with sudo is actually not even supported in Wayland by design due to the security issues that that conveys.
  • GNOME hackaton in Brno
    Last week, we had a presentation on Google Summer of Code and Outreachy at Brno University of Technology. Around 80 students attended which was a pretty good success considering it was not part of any course. It was a surprise for the uni people as well because the room they booked was only for 60 ppl.
  • Peek Gif Recorder Gets Updated, Now Available from a PPA
    Peek, the nifty animated gif screen capture app for Linux desktops, has been updated. Peek 0.9 reduces the size of temporary files, adds a resolution downsampling option (to help the app use fewer resources when rendering your gif), and introduces fallback support for avconf should ffmpeg be unavailable.
  • Cerebro is an Open Source OS X Spotlight Equivalent for Linux
    Billed as an ‘open-source productivity booster with a brain’, Cerebro is an Electron app able to run across multiple platforms. It’s an extendable, open-source alternative to Spotlight and Alfred on macOS, and Synapse, Kupfer, Ulauncher, GNOME Do, and others on Linux.
  • JBoss Fuse 6.3 integration services for Red Hat OpenShift released
    Red Hat announced the latest update to the Red Hat JBoss Fuse-based integration service on Red Hat OpenShift. With the growth of the Internet of Things (IoT), cloud-based SaaS systems, and new data streams, organizations can face increasing pressure to more quickly deliver innovative new services. Traditional centralized, monolithic ESB-style integration approaches are often ill-suited to support the business in responding to this pressure.
  • Fedora 25: The perf linux tool.
  • Meet the chap open-sourcing US govt code – Paul, an ex-Microsoft anti-piracy engineer [Ed: Used to work for Microsoft and now spreads the GPL ("cancer" according to Microsoft) in the US government]
    The manager of the project, Berg said, really wanted to release MOOSE as open source, but didn't know how to do so. As a result it took 18 months to traverse government bureaucracy and to obtain the necessary permissions. It's now available under the GPL 2.1 license.