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Fault tolerant PostgreSQL cluster with automatic failover using Repmgr and Barman. Part 1. Introduction.

Right off the bat, this is what you’ll get in the end: Synhronous standby server using repmgr Repmgr daemons running not on db servers No need of witness server with own PostgreSQL instance Split-brain tolerant auto-failover High available configuration without additional utils, such as HAProxy Backup server using barman Asynchronous WAL streaming Became synchronous, if …

Fault tolerant PostgreSQL cluster with automatic failover using Repmgr and Barman. Part 1. Introduction. Read More »

ORADeveloper. IDE for Oracle Databases on Android.

ORADeveloper is the first IDE for Oracle Databases on Android.Directly connect to an existing database without any middleware, browse objects, run user scripts, compile sources, and much more! Main features:– Multi-connection model allows you to execute multiple parallel queries– Database object browser makes it easy to operate objects, such as source compilation, trigger enabling, and …

ORADeveloper. IDE for Oracle Databases on Android. Read More »

nDPI as iptables module(ndpi-netfilter) on Orange PI.

There are many OpenDPI based implementations and their versions. There are many ndpi-netfilter implementations and versions too. But I found only one that works pretty well on Orange PI. I’ve tested it on Orange PI Plus and Armbian. I’ve searched a lot for working nDPI so now I don’t know how many additional packages you …

nDPI as iptables module(ndpi-netfilter) on Orange PI. Read More »

How to install Android x86 6.0, 7.0 on VMWare ESXi. Warning, many screenshots.

I don’t know why, but installing Android x86 6.0 and 7.0 on VMWare ESXi is not quite simple as it should be. The short story 1) Correctly make bootable disk2) Install Android3) Modify GRUB with “nomodeset xforcevesa” parameters to boot android4) Fix parameters in GRUB after android loads And the long story First, download Android …

How to install Android x86 6.0, 7.0 on VMWare ESXi. Warning, many screenshots. Read More »

Comparing Apache mod_php, fcgid, proxy_fcgi + php-fpm with different MPMs for a WordPress blog.

WordPress platform is very popular for personal sites and blogs. In this article I will stress-test my own site in order find best performance CGI and MPM. All test was performed on low-end droplet from DigitalOcean:1 CPU, 512 MB RAM, 20 GB SSD Apache 2.4.10, PHP 5.6.20, MySQL 14.14 Distrib 5.5.49 was installed.Opcache was enabled …

Comparing Apache mod_php, fcgid, proxy_fcgi + php-fpm with different MPMs for a WordPress blog. Read More »