{"id":46,"date":"2014-10-12T20:21:00","date_gmt":"2014-10-12T20:21:00","guid":{"rendered":"https:\/\/www.tech-and-dev.com\/blog\/2014\/10\/12\/installing-varnish-with-virtualmin\/"},"modified":"2021-02-22T01:02:50","modified_gmt":"2021-02-22T01:02:50","slug":"installing-varnish-on-virtualmin","status":"publish","type":"post","link":"https:\/\/www.tech-and-dev.com\/blog\/2014\/10\/installing-varnish-on-virtualmin.html","title":{"rendered":"Installing Varnish With Virtualmin"},"content":{"rendered":"
\n
\"Varnish<\/a><\/div>\n

What is Varnish<\/h2>\n

 <\/p>\n

Varnish is an HTTP accelerator and a reverse proxy caching web application.<\/div>\n
<\/div>\n
Varnish is usually installed in front of the webserver such as Apache and Nginx, and cache their content in order to deliver it fast when a request is made.<\/div>\n
<\/a><\/div>\n
I couldn’t find any good tutorial on installing varnish with virtualmin so I decided to test and post about it.<\/div>\n
\"Varnish<\/a><\/div>\n

 <\/p>\n

Installing dependencies<\/h2>\n

yum install -y gcc make automake autoconf libtool ncurses-devel libxslt groff pcre-devel libedit libedit-devel<\/p><\/blockquote>\n

Varnish 4 requires jemalloc to work<\/p>\n

rpm -Uvh https:\/\/dl.fedoraproject.org\/pub\/epel\/7\/x86_64\/j\/jemalloc-3.6.0-1.el7.x86_64.rpm<\/p><\/blockquote>\n

 <\/p>\n

Installing Varnish<\/h2>\n

The below is for CentOS 6. Varnish for other distros can be found on http:\/\/repo.varnish-cache.org\/<\/a><\/p>\n

Login to SSH, and issue the following commands:<\/p>\n

rpm -Uvh http:\/\/repo.varnish-cache.org\/redhat\/varnish-4.0\/el6\/noarch\/varnish-release\/varnish-release-4.0-4.el6.noarch.rpm<\/p><\/blockquote>\n

yum install varnish<\/p><\/blockquote>\n

 <\/p>\n

<\/h2>\n

Configuring varnish<\/h2>\n
Varnish is installed in front of the webserver, so it should listen on port 80 to accept the web requests.<\/div>\n

vi \/etc\/sysconfig\/varnish<\/p><\/blockquote>\n

Set\u00a0 VARNISH_LISTEN_PORT to 80<\/p>\n

\"Varnish<\/a><\/div>\n

 <\/p>\n

Since varnish will be listening on port 80, the webserver will have to listen on a different port. In this tutorial, I will use port 8080.<\/div>\n
<\/div>\n
So varnish will fetch the content from the webserver, and cache it. In order for varnish to know which port the webserver is listening to, we modify \/etc\/varnish\/default.vcl<\/div>\n

vi \/etc\/varnish\/default.vcl<\/p><\/blockquote>\n

And set the port to 8080. Then set the IP to your server’s external IP. Setting it to 127.0.0.1 will not work on virtualmin by default, since virtualmin uses the external IP when creating a virtual host.<\/div>\n
(Replace xxx.xxx.xxx.xxx by your external IP)<\/div>\n
\"Apache<\/a><\/div>\n

 <\/p>\n

Changing Virtualhosts to new Web server port (8080)<\/h2>\n
If you already have virtualhosts created, you will have to modify them all, one by one, by going to:<\/div>\n
Virtual Server => Server Configuration => Change IP Address => Set New HTTP port<\/i> to 8080<\/b><\/div>\n
\"changing<\/a><\/div>\n

 <\/p>\n

Change the port the webserver is listening to:<\/h2>\n

Webmin => Servers => Apache Webserver => Make sure all the virtual hosts are not listening on port 80
\nGo to Global Configuration Tab => Network and Configuration => Remove ALL the entries that has port 80 in it.
\nMake sure xxx.xxx.xxx.xxx is your IP Address<\/p>\n

\"Changing\u00a0<\/a><\/div>\n
<\/div>\n

Restart the Servers:<\/h2>\n

service httpd restart
\nservice varnish restart<\/p><\/blockquote>\n

All your sites should now be running.<\/p>\n

Configure Varnish to Start after a Reboot<\/h2>\n

Go to Webmin => System => Bootup and Shutdown => Choose Varnish => Click Start on Boot<\/p>\n

\"Configuring<\/a><\/div>\n

 <\/p>\n

<\/h2>\n

Edit Server Templates<\/h2>\n
Edit the Server templates, so that the next time you create a new virtual host, it will be listening on port 80.<\/div>\n
Virtualmin => System Settings => Server Templates => Default Settings => Apache Website => Change “Port number for virtual hosts<\/b>” to 8080 and then click “Save”.<\/div>\n
<\/div>\n
\"Editing<\/a><\/div>\n
<\/div>\n
<\/div>\n
If you have more custom templates, you will need to edit them all.<\/div>\n
<\/div>\n

 <\/p>\n

Check Varnish Performance<\/h2>\n

In SSH type:<\/p>\n

varnishstat<\/p><\/blockquote>\n

In this tutorial, I’m using Apache as a webserver, but it should work well on Nginx or any other webserver.<\/div>\n

Any questions? Please let me know!<\/b><\/p>\n

 <\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

What is Varnish   Varnish is an HTTP accelerator and a reverse proxy caching web application. Varnish is usually installed in front of the webserver such as Apache and Nginx, and cache their content in order to deliver it fast when a request is made. I couldn’t find any good tutorial on installing varnish with […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[17,6,53,41],"tags":[],"class_list":["post-46","post","type-post","status-publish","format-standard","hentry","category-centos","category-linux","category-varnish","category-virtualmin"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.tech-and-dev.com\/blog\/wp-json\/wp\/v2\/posts\/46","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tech-and-dev.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tech-and-dev.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tech-and-dev.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tech-and-dev.com\/blog\/wp-json\/wp\/v2\/comments?post=46"}],"version-history":[{"count":1,"href":"https:\/\/www.tech-and-dev.com\/blog\/wp-json\/wp\/v2\/posts\/46\/revisions"}],"predecessor-version":[{"id":279,"href":"https:\/\/www.tech-and-dev.com\/blog\/wp-json\/wp\/v2\/posts\/46\/revisions\/279"}],"wp:attachment":[{"href":"https:\/\/www.tech-and-dev.com\/blog\/wp-json\/wp\/v2\/media?parent=46"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tech-and-dev.com\/blog\/wp-json\/wp\/v2\/categories?post=46"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tech-and-dev.com\/blog\/wp-json\/wp\/v2\/tags?post=46"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}