Blog archive by Mattias Geniar

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

2014-11

2014-11-13 Microsofts Open Source Strategy
2014-11-12 Benchmarking the performance of ‘Wordfence’, a WordPress plugin
2014-11-12 Slow login/DNS via Active Directory on OSX Mavericks and Yosemite (.local domains)
2014-11-12 Microsoft SSL/TLS vulnerability MS14-066
2014-11-10 Firefox Developer Edition released
2014-11-10 A collection of PHP exploit scripts
2014-11-09 Behind the scenes at World of Warcraft: the datacenter tech

2014-10

2014-10-15 Patch your webservers for the SSLv3 POODLE vulnerability (CVE-2014-3566)
2014-10-12 DNSSEC: NSEC3 iterations too big for weakest DNSKEY strength
2014-10-12 You Need Passion
2014-10-05 Compress a PDF file on Linux via the CLI
2014-10-03 Sysdig CLI examples

2014-08

2014-08-07 HHVM versus PHP-FPM 5.4 vs PHP-FPM 5.5: performance comparison

2014-07

2014-07-28 HTTPd: Cannot load mod_status.so into server: undefined symbol: ap_copy_scoreboard_worker

2014-06

2014-06-30 PHP-FPM environment variables are limited to 1024 chars

2014-05

2014-05-13 CVE-2014-0185: PHP-FPM sockets unavailable after updating PHP
2014-05-03 OpenSSL: validate that certificate matches / signs the private key

2014-04

2014-04-26 Whois at the CLI: get all IP ranges from an AS number
2014-04-22 Debugging HTTP requests to PHP via the CLI
2014-04-13 Follow-up: use ondemand PHP-FPM masters using systemd
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

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

2012-05

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

2012-02

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

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