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Martin Hope
auino
Asked: 2016-02-20 02:10:13 +0800 CST
  • 0

I've got this Apache2 site configuration, allowing me to "run Apache as a proxy" of the localhost:8080 service.

<VirtualHost *:80>
    ServerName foo.mydomain.com
    RedirectPermanent / https://foo.mydomain.com/
</VirtualHost>

<VirtualHost *:443>
    ServerName foo.mydomain.com

    RewriteEngine On

    RewriteCond %{DOCUMENT_ROOT}/%{REQUEST_FILENAME} !-f
    RewriteRule ^/(.*)$ balancer://upstream%{REQUEST_URI} [P,QSA,L]

    <Proxy balancer://upstream>
        # following directive generates the error
        BalancerMember http://127.0.0.1:8080
    </Proxy>

    ProxyRequests Off
    ProxyVia On
    ProxyPreserveHost On
    RequestHeader set X_FORWARDED_PROTO https

    <Proxy *>
        Order allow,deny
        Allow from all
    </Proxy>

    SSLEngine               on
    SSLCertificateFile      /etc/apache2/certs/foo.mydomain.com/host.pem
    SSLCertificateKeyFile   /etc/apache2/certs/foo.mydomain.com/host.key

    ErrorLog ${APACHE_LOG_DIR}/error_foo_mydomain.log

    LogLevel warn

    CustomLog ${APACHE_LOG_DIR}/access_foo_mydomain.log combined
</VirtualHost>

When I restart Apache2 with service apache2 restart an error is returned.
I saw that the problem is related to the following directive:

BalancerMember http://127.0.0.1:8080

If I comment that line, the error is gone and the server is started. Nevertheless, the proxy is not working. Syntax should be correct, so I don't exactly know how to solve this.

Of course, both proxy and proxy_balancer modules are enabled.

apache-2.2
Martin Hope
auino
Asked: 2015-08-07 01:29:19 +0800 CST
  • 1

On Linux systems, I have a file I want to preserve from (even accidental) deletion.
How can I create a file even the root user can't delete?
For instance, by trying:

# touch file
# chmod 000 file
# chown <somebody>:<somebody> file
# rm file

root user is able to delete the file (through the last command).

How can I avoid root user to (even temporary) delete the file?

linux
Martin Hope
auino
Asked: 2015-01-31 01:53:38 +0800 CST
  • 1

I'm trying to load a custom library on an Apache2 web server.
On Unix systems, I know it's possible to do it using the LD_PRELOAD variable.
I've configured /etc/apache2/envvars file to preload my library, appending an export LD_PRELOAD=/path/to/mylibrary.so , which usually works from command line operations (i.e. with curl), but when I try to restart the server, bash freezes to:

[....] Stopping web server: apache2

Why isn't it working?

apache-2.2