Postovi koji sadrže tag ‘apache’

sij. 28

Kompresiranje i cache datoteka

Kako bi ubrzali rad stranice, u velikom broju slučajeva znatno pomaže kompresiranje podataka prije nego što se šalju browseru te spremanje datoteka u cache browsera na duži period od standardnih 24 sata. U nastavku je set Apache .htaccess pravila koji se upisuju u .htaccess datoteci kako bi se izvršilo kompresiranje određenih vrsta datoteka i pravila za podešavanje cache vremena:

# Enable GZIP
 <IfModule mod_deflate.c>
 AddOutputFilterByType DEFLATE text/text text/html text/plain text/xml text/css application/x-javascript application/javascript application/json application/rss+xml application/vnd.ms-fontobject application/x-font-ttf application/x-web-app-manifest+json application/xhtml+xml application/xml font/opentype image/svg+xml image/x-icon text/x-component
 BrowserMatch ^Mozilla/4 gzip-only-text/html
 BrowserMatch ^Mozilla/4.0[678] no-gzip
 BrowserMatch bMSIE !no-gzip !gzip-only-text/html
 </IfModule>

 # Expires Headers - 2678400s = 31 days
 <IfModule mod_expires.c>
 ExpiresActive On
 ExpiresDefault "access plus 1 seconds"
 ExpiresByType text/html "access plus 7200 seconds"
 ExpiresByType image/gif "access plus 2678400 seconds"
 ExpiresByType image/jpeg "access plus 2678400 seconds"
 ExpiresByType image/png "access plus 2678400 seconds"
 ExpiresByType text/css "access plus 518400 seconds"
 ExpiresByType text/javascript "access plus 2678400 seconds"
 ExpiresByType application/x-javascript "access plus 2678400 seconds"
 </IfModule>

 # Cache Headers
 <IfModule mod_headers.c>
 # Cache specified files for 31 days
 <FilesMatch ".(ico|flv|jpg|jpeg|png|gif|css|swf)$">
 Header set Cache-Control "max-age=2678400, public"
 </FilesMatch>
 # Cache HTML files for a couple hours
 <FilesMatch ".(html|htm)$">
 Header set Cache-Control "max-age=7200, private, must-revalidate"
 </FilesMatch>
 # Cache PDFs for a day
 <FilesMatch ".(pdf)$">
 Header set Cache-Control "max-age=86400, public"
 </FilesMatch>
 # Cache Javascripts for 31 days
 <FilesMatch ".(js)$">
 Header set Cache-Control "max-age=2678400, private"
 </FilesMatch>
 </IfModule>

 # Turn ETags Off
 FileETag None

 # Turn PHP caching off
 <FilesMatch ".(php)$">
 <IfModule mod_expires.c>
 ExpiresActive Off
 </IfModule>
 <IfModule mod_headers.c>
 Header set Cache-Control "private, no-cache, no-store, proxy-revalidate, no-transform"
 </IfModule>
 </FilesMatch>

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sij. 27

Spremanje promjena u httpd.conf datoteci

Prilikom ručne promjene Apache httpd.conf datoteke potrebno je pokrenuti “distiller” kako bi se ručno napravljene izmjene spremile u cPanel httpd.conf templatu preko koje se automatski regenerira httpd.conf datoteka kod svakog kreiranja novog hosting računa ili dodavanja addon/parked domene na postojećem hosting računu. Naredba za spremanje ručno napravljenih izmjena:

/usr/local/cpanel/bin/apache_conf_distiller –update

Kod bilo kakvih promjena u konfiguracijskoj datoteci preporučeno je restartati httpd servis kako bi se promjene učitale i postale aktivne. Naredba za restart httpd servisa:

/etc/init.d/httpd restart

ili

service httpd restart

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velj. 14

cPanel i WHM log datoteke

General:

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cPanel/WHM Initial Installation Errors: Location : /var/log/cpanel*install* Description : These log files contain cPanel installation logs & should be referenced first for any issues resulting from new cPanel installations..

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Cpanel/WHM Service Status Logs: Location : /var/log/chkservd.log Description :The service monitoring demon (chkservd) logs all service checks here. Failed service are represented with a [-] and active services are represented by [+].

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Cpanel/WHM Accounting Logs: Location : /var/cpanel/accounting.log Description : Contains a list of accounting functions performed through WHM, including account removal and creation..

cPanel/WHM Specific Requests and Errors:

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cPanel error logs: Location : /usr/local/cpanel/logs/error_log Description : cPanel logs any error it incurs here. This should be checked when you encounter errors or strange behavior in cPanel/WHM…

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cPanel License Error Logs: Location : /usr/local/cpanel/logs/license_log Description : All license update attempts are logged here. If you run into any errors related to license when logging in, check here.

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Stats Daemon Logs: Location : /usr/local/cpanel/logs/stats_log Description : The stats daemon (cpanellogd) logs the output from all stats generators (Awstats, Webalizer, Analog) here.

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Client Information, Requested URL Logs: Location : /usr/local/cpanel/logs/access_log Description : General information related to access cPanel requests is logged here.

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cPanel/WHM Update Logs: Location : /var/cpanel/updatelogs/update-[TIMESTAMP].log Description : Contains all output from each cPanel update [upcp]. It’s named with the timestamp at which the upcp process was initiated..

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Bandwidth Logs: Location : /var/cpanel/bandwidth Description : Files contain a list of the bandwidth history for each account. Each named after their respective user.

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Tailwatchd [New]: Location : /usr/local/cpanel/logs/tailwatchd_log Description : Logs for daemon configuired under tailwatchd ie. cPBandwd, Eximstats, Antirelayd.

Apache Logs:

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General Error and Auditing Logs: Location : /usr/local/apache/logs/error_log Description : All exceptions caught by httpd along with standard error output from CGI applications are logged here.. The first place you should look when httpd crashes or you incur errors when accessing website.

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Apache SuExec Logs: Location : /usr/local/apache/logs/suexec_log Description : Auditing information reported by suexec each time a CGI application is executed. Useful for debugging internal server errors, with no relevant information being reported to the Apache error_log, check here for potential suexec policy violations…

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Domain Access Logs: Location : /usr/local/apache/domlogs/domain.com Description : General access log file for each domain configured with cPanel.

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Apache Access Logs: Location : /usr/local/apache/logs/access_log Description : Complete web server access log records all requests processed by the server.

Exim :

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Message Reception and Delivery: Location : /var/log/exim_mainlog or /var/log/exim/mainlog Description : Receives an entry every time a message is received or delivered.

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Exim ACLs/Policies based RejectLog : Location : /var/log/exim_rejectlog Description : An entry is written to this log every time a message is rejected based on either ACLs or other policies eg: aliases configured to :fail

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Unexpected or Fatal Errors: Location : /var/log/exim_paniclog Description : Logs any entries exim doesn’t know how to handle. It’s generally a really bad thing when log entries are being written here, and they should be properly investigated..

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IMAP/POP/SpamAssassin General Logging and Errors: Location : /var/log/maillog & /var/log/messages Description : The IMAP, POP, and SpamAssassin services all log here. This includes all general logging information (login attempts, transactions, spam scoring), along with fatal errors.

FTP:

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FTP Logins and General Errors: Location : /var/log/messages Description : General information and login attempts are logged here..

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FTP Transactions logging: Location : /var/log/xferlog or /var/log/messages Description : Is a symbolic link in most cases to /usr/local/apache/domlogs/ftpxferlog, which contains a history of the transactions made by FTP users…

MySQL:

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MySQL General Information and Errors : Location : /var/lib/mysql/$(hostname).err Description : This path could vary, but is generally located in /var/lib/mysql. Could also be located at /var/log/mysqld.log

Security:

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Authentication attempts: Location : /var/log/secure Description : Logs all daemons which requires PAM Authentication.

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Tracking all Bad Logins and Logouts: Location : /var/log/btmp Description : Log of all attempted bad logins to the system. Accessed via the lastb command..

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Tracking all Logins and Logouts: Location : /var/log/wtmp Description : The wtmp file records all logins and logouts.

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Last Logins: Location : /var/log/lastlog Description : Database times of previous user logins. The lastlog file is a database which contains info on the last login of each user.

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WebDav or WebDisk Log : Location : /usr/local/cpanel/logs/cpdavd_error_log Description : The cpdavd daemon is “WebDav” (better known as “WebDisk”) which was introduced in cPanel 11 to allow users to mount their home directory on their personal computer, always having access to the files and content…

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Cphulkd Logs: Location : /usr/local/cpanel/logs/cphulkd_errors.log Description : cPHulk Brute Force Protection prevents malicious forces from trying to access your server’s services by guessing the login password for that service…. It blacklists IPs that it thinks are trying to run a brute force attack.

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Failure Logging: Location : /var/log/faillog Description : Faillog formats the contents of the failure log from /var/log/faillog database. It also can be used for maintains failure counters and limits. Run faillog without arguments display only list of user faillog records who have ever had a login failure.

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Startup/Boot, Kernel & Hardware error messages : Location : /var/log/dmesg Description : dmesg is a “window” into the kernels ring-buffer. It’s a message buffer of the kernel. The content of this file is referred to by the dmesg command. It shows bootlog and the hardware errors..

Tomcat:

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General Startup, Shutdown & Error Logs: Location : /usr/local/jakarta/tomcat/logs/catalina.err and /usr/local/jakarta/tomcat/logs/catalina.out Description : Logs for Tomcat and all tomcat based applications…

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