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Fix : Hard Disk Full of MySQL Log Files, MySQL Failing to Start

Server hard disk full is quite common matter, especially on the cloud servers. Usual disk space allocated on common RAM size cloud server instance is 30-40GB. Bigger websites easily eat up 10GB space for the media files. System files including running applications take more than 10GB. And for WordPress, full hard disk will result showing up the infamous "Error Establishing a Database Connection" … [Read more...]

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How to Connect Apache Kafka With MQTT

This is not a step by step guide with commands. This is a guide to get started moving from generic Kafka to Confluent Inc's Kafka, Connectors and ready to consume one GitHub repository. Initially it will appear that with the easiness we installed Apache Kafka and MQTT Server, with same easiness we can connect Apache Kafka with MQTT. There are actually many things to learn, think. MQTT is a … [Read more...]

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How to Send Data from Arduino to MySQL Database

In our recent past discussions, we have send data from ESP32 Arduino to IBM Watson IoT by either using MQTT or by using HTTP POST. In the same way, we have discussed how with CouchDB we can send data from ESP32 Arduino. Also, we have discussed different types of cloud database for IoT. MySQL is widely used database for PHP driven web applications. We can send data from Arduino, ESP32 to MySQL … [Read more...]

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How to Install CouchDB on Ubuntu Cloud Server

Here Are the Steps to How to Install CouchDB on Ubuntu Cloud Server With root Access as Single Node. Data can be ported from Cloudant to CouchDB. There is CouchDB, CouchIO, CouchOne, Couchbase, Couchbase Server, Couchbase Mobile, Couchbase Lite, CouchApps, BigCouch, Touchbase, Membase, Memcached, MemcacheDB. All are different but are related in a way not obvious from the names alone. First, there … [Read more...]

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WordPress Security : Apache2 Module to Log HTTP POST Method

Earlier we discussed about the HTTP POST method. Technically We Should Log HTTP Request Methods. Here is How to Apache Module to Log HTTP POST Method, As Example For WordPress Installation. After examination of few weeks log, we can block the malicious HTTP POST requests. This guide is for those who have installed Apache HTTPD server using our method. We say `apache2` instead of … [Read more...]

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How to Install Mosquitto MQTT Broker/Server on Ubuntu Cloud Server

Here is How To How to Install Mosquitto MQTT Broker/Server on Ubuntu Cloud Server So That You Need Not to Depend on Third Party MQTT Broker. To connect to a command line on your server instance you will need to use SSH with `root` privilege. Update, upgrade and install the required packages from Ubuntu repo : # sudo apt update sudo apt install mosquitto # install the … [Read more...]

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Analyzing Unexpected Shutdown of Ubuntu Cloud Server

Ideally one should everyday login to Ubuntu server running WordPress like software. Public internet has been dangerous and hackers known to perform various kind of practice. It is not great get astonished by an unexpected shutdown of cloud server in clueless manner. Overheating a common issue for the dedicated servers while cloud Server instances commonly have the issue of operating system … [Read more...]

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Why MySQL Auto Restart Failing in WordPress Cloud Server

Why MySQL Auto Restart Failing in WordPress Cloud Server Despite Your Efforts of Trying Various Optimization and Scripts to Auto-Restart? We already talked around fixing Error Establishing a Database Connection in WordPress, Autostart MySQL After a Crash, other MySQL fixes for Ubuntu and latest fixes for Ubuntu 18.04. Various updates on the part of different software partially force us to discover … [Read more...]

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Latest Development in Cognitive Cyber Security & Solutions from IBM

Cybersecurity still a battle among a group of humans with firewalls, access controls, dynamic passwords, and more mechanism. Unfortunately, the methodologies going towards inadequate as the battlefield going towards human versus machine. With the increasing number of devices, security breaches are becoming more frequent. Smartphones, Cloud, IoT, BYOD are all newer endpoints which themselves can … [Read more...]

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How To Install Apache Phoenix (SQL on HBase)

We talked about Apache Phoenix in our previous guides and articles such as How To Install Apache HBase and List of Apache Projects For Big Data. Apache Phoenix is a massively parallel, relational database engine supporting OLTP for Hadoop using Apache HBase as store. Phoenix provides a JDBC driver that cleverly hides the noSQL store in front enabling the users to create, delete, and alter SQL … [Read more...]

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How To Configure Fail2ban To Send Daily Email Report

Fail2Ban is a robust tool. By default the system of Fail2Ban sends an email with each ban. There is an action there named mail-buffered. That action expects 5 ban (default) before sending you an email. But a summary report probably more practical. Here are the required steps on how to configure Fail2ban to send daily email report. This system needs to configure mail server on the server under … [Read more...]