Blogpost archive

This is a list of all my blogposts. They range from highly technical to entry level, from Linux to PHP and server management.

2014-04

2014-04-10 Varnish 4.0.0 released together with configuration templates
2014-04-10 Scan your network for Heartbleed vulnerabilities with Nmap
2014-04-09 A better way to run PHP-FPM
2014-04-08 Patch against the heartbleed OpenSSL bug (CVE-2014-0160)

2014-03

2014-03-31 Presentation: Code Obfuscation, PHP shells & more: what hackers do once they get passed your code
2014-03-23 What if you are the network admin tasked with blocking IPs in Turkey?

2013-12

2013-12-24 Puppet performance troubleshooting: using the built-in profiler in standalone puppet apply

2013-07

2013-07-30 Puppet: Error 400 on SERVER ArgumentError: malformed format string – %S at …

2013-06

2013-05

2013-05-29 Read all keys & values from a Memcached instance
2013-05-15 Setting custom puppet facts from within your Vagrantfile

2013-04

2013-04-25 Nginx: nginx: [warn] load balancing method redefined
2013-04-15 CentOS / RHEL: configure: error: C++ compiler g++ does not work or no compiler found
2013-04-11 RVM: Installing Ruby 1.8.7 on Mac OSX 10.8

2013-02

2013-02-20 Gearman Queue error: mysql_stmt_execute failed: Unknown prepared statement handler (1)

2012-11

2012-11-27 Stop. Caching. Static. Files. In. Varnish.

2012-10

2012-10-29 Public jPackage Repository Mirror

2012-08

2012-08-31 Using telnet from the VMware 5.x ESXi shell
2012-08-10 Now stop using dsbl.org blacklisting: it’s offline
2012-08-04 e2fsck: Error allocating directory block array: Memory allocation failed

2012-07

2012-07-31 Facter/Puppet: Could not retrieve selinux: Invalid argument – /proc/self/attr/current
2012-07-24 Prevent cronjobs from overlapping in Linux
2012-07-23 Reinstall the Linux Kernel on CentOS or RHEL
2012-07-06 My thoughts on mobile webdesign
2012-07-02 CentOS 6: /usr/sbin/qpidd eating up all CPU (at 100%)
2012-07-02 A fix for the Java Leap Second bug

2012-06

2012-06-29 Running php-cgi scripts via the CLI as a webserver would (by faking them)
2012-06-27 How to install and use the EPEL repository for CentOS 5 and CentOS 6
2012-06-26 Puppet + Razor: pxe boot failing to load with ‘Operating system not found’
2012-06-25 MySQL: SHOW FUNCTION STATUS WHERE Db = ‘name’: Cannot load from mysql.proc. The table is probably corrupted
2012-06-25 Install VMware Tools via the Yum Package Manager on RHEL and CentOS
2012-06-20 Dependency errors for git installs on CentOS with EPEL repo
2012-06-18 The insanity of URL shorteners and tracking
2012-06-06 Dependency fail on php-api when installing php-mcrypt or php-mhash from EPEL on CentOS 6
2012-06-06 How to change the reserved blocks on EXT3 or EXT4 filesystem in Linux
2012-06-06 Apache + PHP on Ubuntu: apache2filter does not support gzip

2012-05

2012-05-30 Loading the 3ware/LSI 9650SE drivers into VMware ESXi
2012-05-29 Re-enabling IPv6 support on CentOS kernels after update
2012-05-09 Autoloading MIB files in client SNMP configuration on Linux

2012-04

2012-03

2012-03-31 Importing the Puppet Learning VM into VirtualBox: unknown resource type in hardware item
2012-03-30 Bad ORM is infinitely worse than bad SQL
2012-03-30 Nginx and php-fpm: upstream timed out / failed (110: Connection timed out or reset by peer) while reading
2012-03-29 PHP execution via passthru(), exec(), shell_exec(), …: sh: /php: No such file or directory
2012-03-28 Rescan disk devices on a Linux VMware virtual machine without a reboot
2012-03-22 What are the ‘encrypted_search_terms’ hits on your website/wordpress blog?
2012-03-20 OpenVZ: vzctl enter gives “Unable to open pty: No such file or directory”
2012-03-20 yum update on OpenVZ container: error: cannot open Packages database in /%{_dbpath}
2012-03-15 Enable IPv6 connectivity for Nginx
2012-03-01 Remove a single mail from the postfix queue on Linux

2012-02

2012-02-29 Xapian Bindings 1.2.7/8 in PHP: undefined symbol: zend_error_noreturn in Unknown on line
2012-02-28 SSH logins or rsync’s without using a password prompt
2012-02-28 Using ssh-copy-id on an alternative SSH destination port
2012-02-26 Incoming bandwidth limitation on OpenVZ with CentOS 6.x running on VMware ESX(i)
2012-02-26 Installing VMware Tools on a Debian 6 Linux Virtual Machine
2012-02-26 Checking the version of VMware Tools inside a Linux Virtual Machine on ESX(i)
2012-02-24 Removing a package without its dependencies in CentOS or RHEL
2012-02-24 On removing users with %postun in RPM SPEC files
2012-02-24 Nginx: password protect a directory
2012-02-21 The hidden images within PHP
2012-02-21 Changing interface back to eth0 from eth1 in Linux (CentOS/RHEL)
2012-02-20 Setting up a catch-all e-mail account on Linux using Postfix
2012-02-18 Hide PHP errors and log them to a file or syslog (php-fpm or mod_php)
2012-02-18 A vim configuration for the PHP developer
2012-02-18 PHP: php_value vs php_admin_value and the use of php_flag explained
2012-02-18 Letting memcached only listen on localhost on CentOS/RHEL
2012-02-18 Enable syntax highlighting in VIM for PHP-FPM configurations
2012-02-17 The bugged sysinfo() call in OpenVZ hosts running Kernel 2.6.32+
2012-02-15 Blocking Googlebot/MSNbot/Bingbot in Apache configuration from accessing your server/site
2012-02-11 Add ‘Options FollowSymLinks’ and avoid ‘Options SymLinksIfOwnerMatch’ in Apache to save disk I/O
2012-02-11 Avoid ‘AllowOverride All’ in Apache to limit disk I/O access
2012-02-09 RHEL 6/ CentOS 6: Slow SSH logins with DNS timeouts
2012-02-05 The infamous /w00tw00t.at.ISC.SANS.DFind GET requests in your access logs

2012-01

2011-12

2011-12-29 2011: An overview of projects & popular blogposts
2011-12-29 Ubuntu 9.10 with VMware Convertor: GrubInstaller failed – /vmware-updateGrub.sh: 38: grub: not found
2011-12-19 Plesk & DrWeb: “read error” on e-mails being scanned
2011-12-11 Porting standard Apache’s mod_rewrite rules to Nginx
2011-12-11 Enabling and disabling PHP’s APC cache on a per Virtual Host level in Apache
2011-12-11 Apache Access Log: don’t log static content
2011-12-11 Nginx Access Log: log the real user’s IP instead of the proxy
2011-12-10 Plesk: passing the authorization headers in PHP when running with FastCGI/mod_fcgid
2011-12-03 Zabbix: monitor a TCP port with the Zabbix Agent

2011-11

2011-11-30 Ground rules for when compiling applications from source
2011-11-27 Varnish running in foreground but fails to run as service/daemon
2011-11-26 Varnish: filter by Source IP using Varnishlog (in Varnish 2.x, 3.x and 4.x)
2011-11-25 Varnish: varnishhist/varnishtop: error while loading shared libraries: libvarnishapi.so.1: cannot open shared object file
2011-11-24 Nginx returning blank white page on PHP parsed with FastCGI or PHP-FPM
2011-11-24 RHEL6 and CentOS 6: missing libmcrypt and libmhash in default repository
2011-11-19 Fixing MySQL master-slave replication upon query error
2011-11-19 MySQL purge the binary logs from replication (mysql-bin.xxxx files)
2011-11-19 Plesk: show all FTP accounts and passwords
2011-11-19 Plesk: listing all the database account info (dbname/username/password)
2011-11-19 Plesk: listing all the mailbox account info (username/password)

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