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RPM Building Gotchas


by Danila Vershinin, July 14, 2018

Here’s my small guide on some issues, solutions, and best practices for building CentOS/RHEL RPMs. Versioning module of a program NGINX modules have to be rebuilt for specific versions of NGINX. This means that an NGINX module package essentially versions based on two components: The version of NGINX itself The version of the module (unless […]

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How to use multiple real IP headers with nginx


by Danila Vershinin, July 10, 2018

How to pass real visitor IPs in nginx from two different cloud services.

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Proxy requests to any remote server in nginx


by Danila Vershinin, July 8, 2018

Display information from other websites on your own, with nginx proxying.

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Tuning proxy_buffer_size in NGINX


by Danila Vershinin, July 7, 2018

Make your NGINX more memory efficient and fix that “upstream sent too big header while reading response header from upstream” error.

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Magento 2 Security Checklist


by Danila Vershinin, June 24, 2018

When you prepare to launch your Magento 2 website, security is one of the primary areas of concern. Whether you plan to accept credit card data directly on your website, or on a payment provider’s pages – you are required to achieve PCI compliance. Otherwise, you’ll find your business at risk of being banned from […]

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How to remove the Server header in NGINX


by Danila Vershinin,

How to hide the Server HTTP header in NGINX and more: hide the fact of using NGINX altogether.

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How to whitelist / unban a user in unmanaged Citrus Stack server


by Danila Vershinin, June 20, 2018

You’d rarely have to do anything about maintaining a healthy state of a Citrus Stack server. It is self healing, and secure from brute force attacks. However, when you share access with developers, a frequent problem is that the server would automatically ban them. This happens for a few reasons: Repetitive failed attempts to login […]

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In-Place Upgrading: Percona MySQL 5.6 to 5.7 (RedHat/CentOS 7)


by Danila Vershinin, June 17, 2018

A simple script for updating your Percona MySQL Server 5.6 to version 5.7, in CentOS/RHEL systems.

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Setup SSL connections in Percona MySQL 5.6


by Danila Vershinin, June 14, 2018

Secure remote MySQL connectivity with compulsory SSL connections

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Safe MySQL configuration reload? Easy


by Danila Vershinin,

An easy way into implementing `systemctl reload mysqld`.

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