apache2 interview questions
Top apache2 frequently asked interview questions
I want change the limit of php upload file's size
And this is some information of my phpinfo.
Configuration File (php.ini) Path /etc/php5/apache2
Loaded Configuration File /etc/php5/apache2/php.ini
And this is the content of my php.ini file:
upload_max_filesize = 50M
post_max_size = 50M
memory_limit = 128M
Then i restart apache2,but the phpinfo show is also:
upload_max_filesize 2M
Source: (StackOverflow)
I have a website that I use github (closed source) to track changes and update site. The only problem is, it appears the .git directory is accessible via the web. How can I stop this and still be able to use git?
Should I use .htaccess?
Should I change permissions of .git?
Source: (StackOverflow)
I use centOS server. I want to configure apache to listen on port 8079.
I added LISTEN 8079 directive in httpd.conf.
I opened port 8079 in iptables and restarted iptables. I even stopped iptables service.
"netstat -nal | grep 8079" shows "tcp 0 0 :::8079 :::* LISTEN"
If I try to access http://localhost:8079 or http://myserver.com:8079 from that machine, I can access that page. BUT from any other machine I am not able to access the site on any port other than 80. On port 80, it works. On port 8079 it does not.
What else do I need to configure?
Source: (StackOverflow)
Problem: OpenSSL is not working in my Windows environment.
Environment:
Windows NT x 6.1 build 7601 (Windows 7 Business Edition Service Pack 1) i586
Apache/2.4.4 (Win32)
PHP/5.4.13 x86
PHP Directory: E:\wamp\php\
Virtual Host Directory: E:\Projects\1\public_html
What I've Attempted:
- Installation Instructions http://www.php.net/manual/en/openssl.installation.php
- PHP.ini
extension=php_openssl.dll
- Openssl.cnf
E:\wamp\php\extras\openssl.cnf
- %PATH%
E:\wamp\php
- Rebooted
- phpinfo:
----OpenSSL support enabled
----OpenSSL Library Version OpenSSL 1.0.1e 11 Feb 2013
----OpenSSL Header Version OpenSSL 0.9.8y 5 Feb 2013
- With and without specifying config in
configargs
- With and without specifying
<Directory E:\wamp\php\extras> in apache config
- Copied
openssl.cnf to virtualhost public_html, pointed to that and still get same errors
- Nothing logged in error_log
- Researched: I've spent the last 2 days researching this, surprised there isn't more info on it so I'm posting here. Seems to be problem with OpenSSL config or apache/php not reading config properly.
Code:
$privateKey = openssl_pkey_new();
while($message = openssl_error_string()){
echo $message.'<br />'.PHP_EOL;
}
Results:
error:02001003:system library:fopen:No such process
error:2006D080:BIO routines:BIO_new_file:no such file
error:0E064002:configuration file routines:CONF_load:system lib
error:02001003:system library:fopen:No such process
error:2006D080:BIO routines:BIO_new_file:no such file
error:0E064002:configuration file routines:CONF_load:system lib
OpenSSL Manually:
E:\wamp\apache\bin>openssl.exe pkey
WARNING: can't open config file: c:/openssl-1.0.1e/ssl/openssl.cnf
E:\wamp\apache\bin>set OPENSSL_CONF="E:\wamp\php\extras\openssl.cnf"
E:\wamp\apache\bin>openssl.exe pkey
3484:error:0200107B:system library:fopen:Unknown error:.\crypto\bio\bss_file.c:169:fopen('"E:\wamp\php\extras\openssl.cnf"','rb')
3484:error:2006D002:BIO routines:BIO_new_file:system lib:.\crypto\bio\bss_file.c:174:
3484:error:0E078002:configuration file routines:DEF_LOAD:system lib:.\crypto\conf\conf_def.c:199:
EDIT:
- Thanks to @Gordon I can now see open_ssl errors using
openssl_error_string
- Completely uninstall EasyPHP. Manually installed stable versions of PHP/Apache. Same results! Definitely something I'm doing wrong with implementing openssl on windows.
- OpenSSL Manually section... additional error info
FINAL THOUGHTS:
I set up a linux box and I'm getting the same errors. After some playing around I see that even though it's throwing errors at the openssl_pkey_new it does eventually create my test p12 file. Long story short, the errors are misleading and it has to deal more with how you are using openssl functions not so much server-side configuration.
Final code:
// Create the keypair
$res=openssl_pkey_new();
// Get private key
openssl_pkey_export($res, $privkey);
// Get public key
$pubkey=openssl_pkey_get_details($res);
$pubkey=$pubkey["key"];
// Actual file
$Private_Key = null;
$Unsigned_Cert = openssl_csr_new($Info,$Private_Key,$Configs);
$Signed_Cert = openssl_csr_sign($Unsigned_Cert,null,$Private_Key,365,$Configs);
openssl_pkcs12_export_to_file($Signed_Cert,"test.p12",$Private_Key,"123456");
Close away.
A year later...
So I found myself doing this again a year later, and regardless of whatever PATH variables I set on the computer or during the script execution, it kept erroring about file not found. I was able to resolve it by passing in the config parameter in the config_args array in openssl_pkey_new. Here is a function that tests the ability to successfully use OpenSSL:
/**
* Tests the ability to 1) create pub/priv key pair 2) extract pub/priv keys 3) encrypt plaintext using keys 4) decrypt using keys
*
* @return boolean|string False if fails, string if success
*/
function testOpenSSL($opensslConfigPath = NULL)
{
if ($opensslConfigPath == NULL)
{
$opensslConfigPath = "E:/Services/Apache/httpd-2.4.9-win32-VC11/conf/openssl.cnf";
}
$config = array(
"config" => $opensslConfigPath,
"digest_alg" => "sha512",
"private_key_bits" => 4096,
"private_key_type" => OPENSSL_KEYTYPE_RSA,
);
$res = openssl_pkey_new($config); // <-- CONFIG ARRAY
if (empty($res)) {return false;}
// Extract the private key from $res to $privKey
openssl_pkey_export($res, $privKey, NULL, $config); // <-- CONFIG ARRAY
// Extract the public key from $res to $pubKey
$pubKey = openssl_pkey_get_details($res);
if ($pubKey === FALSE){return false;}
$pubKey = $pubKey["key"];
$data = 'plaintext data goes here';
// Encrypt the data to $encrypted using the public key
$res = openssl_public_encrypt($data, $encrypted, $pubKey);
if ($res === FALSE){return false;}
// Decrypt the data using the private key and store the results in $decrypted
$res = openssl_private_decrypt($encrypted, $decrypted, $privKey);
if ($res === FALSE){return false;}
return $decrypted;
}
// Example usage:
$res = testOpenSSL();
if ($res === FALSE)
{
echo "<span style='background-color: red;'>Fail</span>";
} else {
echo "<span style='background-color: green;'>Pass: ".$res."</span>";
}
Source: (StackOverflow)
My current urls look like this [mysite]index.php/[rest of the slug].
I want to strip index.php from these urls.
mod_rewrite is enabled on my apache2 server. In config, $config['index_page'] = '';
My codeignitor root .htaccess file contains,
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule .* index.php/$0 [PT,L]
But still it is not working. Where am I going wrong?
Source: (StackOverflow)
It's hard to find Mac-specific answers to this question on the web, so I'm hoping someone out there can put this one to rest for me? My permissions are screwed up on my sites and I'm not sure how to fix them without just slamming a recursive 777 on everything which is quite obviously incorrect.
Thanks!
Source: (StackOverflow)
I have just installed Apache 2.2.17 and I am using it first time.
Now when I try to start the server using command "service httpd start" It gives me the message "httpd: Could not reliably determine the server's fully qualified domain name, using ::1 for ServerName"
Now I think I have to set ServerName and IP address as I search through google. But I dont know in which file I have to set.
So please help me to do this
Source: (StackOverflow)
After the server PHP upgrade I am getting the following error with PHP Version 5.6.2 on Apache 2.0
A PHP Error was encountered
Severity: Notice
Message: Only variable references should be returned by reference
Filename: core/Common.php
Line Number: 257
How can I fix this?
Source: (StackOverflow)
I'm running ubuntu 13.04 64bit on my desktop, I installed apache2, mysql and php etc.
I wanted to have my web root in /home/afflicto/public_html instead of /var/www.
So I went along with this guide:
http://www.maketecheasier.com/install-and-configure-apache-in-ubuntu/2011/03/09
(I did everything from "configuring different sites") as I like the solution more.
Here's what I did:
Installed apache2, mysql etc..
copied /etc/apache2/sites-avaliable/default to /etc/apache2/sites-available/afflicto.
then edited it, it now looks like the following:
/etc/apache2/sites-available/afflicto
<VirtualHost *:80>
ServerAdmin webmaster@localhost
DocumentRoot /home/afflicto/public_html
<Directory />
Options FollowSymLinks
AllowOverride None
</Directory>
<Directory /home/afflicto/public_html/>
Options Indexes FollowSymLinks MultiViews
AllowOverride All
Order allow,deny
allow from all
</Directory>
ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
<Directory "/usr/lib/cgi-bin">
AllowOverride None
Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
Order allow,deny
Allow from all
</Directory>
ErrorLog ${APACHE_LOG_DIR}/error.log
# Possible values include: debug, info, notice, warn, error, crit,
# alert, emerg.
LogLevel warn
CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>
I did sudo a2dissite default && sudo a2ensite afflicto && sudo service apache2 restart
I created a index.php and index.html in /home/afflicto/public_html/test/
when accessing localhost/test or localhost/test/index.html etc, I get 403 forbidden error.
What am I doing wrong? thanks in advance.
update 1
I have set the owner of the public_html directory to www-data.
Also sudo chmod -R +x public_html && sudo chmod -R 777 public_html
Still same 403 error.
Here's the output of the apache error log:
[Sun Jul 14 06:10:32 2013] [error] [client 127.0.0.1] (13)Permission denied: access to / denied
[Sun Jul 14 06:10:32 2013] [error] [client 127.0.0.1] (13)Permission denied: access to /favicon.ico denied
Source: (StackOverflow)
I have two domain names, two ssl certs and two ip addresses. I am trying to configure my apache virtualhost files for them.
First, i commented out all instances of "NameVirtualHost" and "Listen" for ports 80 and 443. Then i did the following with my virtual hosts files.
VirtualHost file for domain1:
NameVirtualHost 1.1.1.1:80
Listen 1.1.1.1:80
Listen 1.1.1.1:443
<VirtualHost 1.1.1.1:80>
ServerName domain1.com
...
</VirtualHost>
<VirtualHost 1.1.1.1:443>
...
</VirtualHost>
VirtualHost file for domain2:
NameVirtualHost 2.2.2.2:80
Listen 2.2.2.2:80
Listen 2.2.2.2:443
<VirtualHost 2.2.2.2:80>
ServerName domain2.com
...
</VirtualHost>
<VirtualHost 2.2.2.2:443>
...
</VirtualHost>
Source: (StackOverflow)
I'm trying to get two (or more) Django applications set up at subdirectories under the same domain, e.g.:
http://example.com/site1/
http://example.com/site2/
I know that normally this works fine by setting up an apache virtualhost like this:
<VirtualHost *:80>
...
WSGIScriptAlias /site1 /path/to/site1.wsgi
WSGIScriptAlias /site2 /path/to/site2.wsgi
</VirtualHost>
Now, I've verified that each site works individually. But when I try to run both side-by-side, apache sends me to whichever site the worker process loaded first. Example:
- Restart apache configured to serve 6 threads
- Load example.com/site1/, get the correct page
- Load example.com/site2/, get the correct page
- Repeat 2 and 3 2 more times.
- Refresh example.com/site1/ repeatedly, watch it cycle from site to site.
Effectively, for any given number of worker processes, it cycles through the total number of them sending the request to whichever one it hit first regardless of the WSGIScriptAlias directive. No matter what I do (setting WSGIProcessGroup, daemon mode vs. embedded mode, or directives) it continues to exhibit this behavior.
If anyone can point out what I'm doing wrong here, that would be phenomenal!
Source: (StackOverflow)
I'm currently trying to place a URL within a URL. For example:
http://example.com/url/http%3A%2F%2Fwww.url2.com
I'm aware that I have to encode the URL, which I have done, but now I am getting a 404 error back from the server rather than my app. I think my problem lies with apache and can be fixed with the AllowEncodedSlashes On directive.
I've tried putting the directive at the bottom of the httpd.conf to no effect, and am unsure what to do next. Am I putting it in the right place? If so, does anyone have any other solutions?
Source: (StackOverflow)
I've managed to extend TokenAuthentication and I have a working model when using the request session to store my tokens, however when I attempt to pass Authorization as a header parameter as described here, I noticed that my Responses come back without the META variable HTTP_AUTHORIZATION. I also noticed that if I pass "Authorization2" as a header parameter that it is visible in the request:
{
'_content_type': '',
'accepted_media_type': 'application/json',
'_request': <WSGIRequest
path:/api/test_auth/,
GET:<QueryDict: {}>,
POST:<QueryDict: {}>,
COOKIES:{
'MOD_AUTH_CAS_S': 'ba90237b5b6a15017f8ca1d5ef0b95c1',
'csrftoken': 'VswgfoOGHQmbWpCXksGUycj94XlwBwMh',
'sessionid': 'de1f3a8eee48730dd34f6b4d41caa210'
},
META:{
'DOCUMENT_ROOT': '/etc/apache2/htdocs',
'GATEWAY_INTERFACE': 'CGI/1.1',
'HTTPS': '1',
'HTTP_ACCEPT': '*/*',
'HTTP_ACCEPT_CHARSET': 'ISO-8859-1,utf-8;q=0.7,*;q=0.3',
'HTTP_ACCEPT_ENCODING': 'gzip,deflate,sdch',
'HTTP_ACCEPT_LANGUAGE': 'en-US,en;q=0.8',
'HTTP_AUTHORIZATION2': 'Token 9944b09199c62bcf9418ad846dd0e4bbdfc6ee4c',
...
My first guess is that the authorization header is being removed by apache, and I have read a few S/O questions that state that apache will throw out the value if it does not match basic authorization and authenticate, but I have no idea how to allow the Authorization header to 'pass through' to Django and the WSGIRequest. Does anyone know how to solve this problem?
I also use mod_auth_cas and mod_proxy, if that changes anything..
Source: (StackOverflow)
This is an issue I've been having for a long time. I want to run PHP applications on my windows computer and it has a terribly high load time, around 10-25 seconds. I have tried many things:
- First I tried a simple XAMPP installation
- I read WAMP might be faster, so I tried WAMP, too. It gave me the same results
- Then I installed an nginx server with PHP, but it did not help either
- Finally, I installed an Ubuntu 11.10 in VirtualBox and I shared my windows files containing my project, but the result was even worse: over 22 second load time each time.
UPDATE: I have even tried APC - it improved a bit but still 6-8 sec/page
I uploaded my files to a linux server(shared hosting), on which it runs in around 300-500 ms. On the XAMPP installation I tried to run other (i.e. not Symfony2) applications as well(e.g. phpmyadmin), which too were slower than on the shared hosting, but not extremely slow, with 2-3 sec load time. Until I change to Linux as the main OS, how could I improve performance? I have a laptop with i7 CPU, 4 GB RAM, 5400RPM HDD, Win7 x64.
Thank you for your help!
UPDATE2: For some mysterious reason my Symfony routing didn't work with fcgid (it gave me a 404 error for everything) so I went back for using PHP as a module. Now, it has become the worst ever (worse than it used to be as a module): app mode 20-25 sec, and in dev mode, over 30s every time, so I get a timeout error, and it's the same with or without APC enabled.
Here you can see this error. This is reproduceable: each time it reaches a different point of execution within 30s:
Source: (StackOverflow)