Linux – Fixing things

There are two main types of redirection. The first is where you want to change a domain or server but you want to preserve the pages and URLs. For example, a company changes name from company1 to company2 and you want to redirect everyone from http://company1.com/ to http://company2.com/ while keeping all of the pages. For example, you would want a visitor clicking a link to http://company1.com/pages/page.html to be redirected to http://company2.com/pages/page.html

This is easy to accomplish with a simple redirect in the virtual host. For example:

ServerName company1
ServerAlias company1.com
Redirect “/” “https://company2.com/”

ServerName company1.com
SSLEngine On
SSLCertificateFile /etc/ssl/apache/company1-com.pem
SSLProtocol all -SSLv2 -SSLv3
SSLCipherSuite ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:RSA+AESGCM:RSA+AES:!aNULL:!MD5:!DSS
Redirect “/” “https://company2.com/”

Another scenario is that perhaps company1 has stopped trading or maybe the site is down for maintenance and you want to send all traffic to a static page. In this example, we redirect to a complete URL which could be hosted elsewhere or on the same server.

ServerName company1
ServerAlias company1.com
RewriteEngine On
RewriteRule ^.*$ https://company2.com/maintenance.html

Please note that if you want to redirect to a page on the same server or domain you will need an additional line before each “rewriterule” preventing the redirect from kicking in on that page. If you don’t you will have an endless redirect loop.

e.g.

RewriteCond %{REQUEST_FILENAME} !/maintenance.html

Simply downloading and running the .deb software package for Google Chrome results in an error with missing dependencies and a broken cache. Running the suggested “apt-get install -f” does not resolve the situation either.

To get the browser up and running start by downloading and adding Google signing key:

wget -q -O – https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add –

Now lets download the deb file:

wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb (change stable to beta if you wish)

Finally install the Google Chrome package. This should also add the Google Chrome repositories which will allow updates to Chrome in future.

sudo dpkg -i google-chrome-stable_current_amd64.deb (change stable to beta if you wish)

Check out the following page for more information:

http://www.google.com/linuxrepositories/

Tag: Linux

Redirecting traffic with Apache

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