OpenLDAP proxy is used to proxy ldap request and response between clients and servers, different servers may have different representations/attributes to mean the same thing. For example, in one LDAP server, the firstName may be represented by firstName, it may be represented by givenName in a different server. However, from the client perspective, it only wants to get the firstName, it doesn't care about the backend attributes.In this case, attribute mapping can help provide a virtual view of the backend data. In another post OpenLDAP Proxy -- Tricks and tips, we have introduced how attribute...

Recently was working on a project which needed to build a docker image, but unfortunately it kept failing as below error was seen.fatal: could not read Username for 'https://xxx.com': terminal prompts disabledBased on the error, it looked like it was trying to pull code from remote Gitlab repository but failed as the terminal prompt is disabled.At first glance, have a doubt why it needs terminal prompt to be enabled? It should just succeed and without prompting for anything. The only reason for prompting is that it needs user authentication to login to the remote Gitlab repo and fetch code.&nb...

The iterative model implemented in any Software Development Life Cycle is all about an initial, simplified implementation which may or may not gain more complexity in future. Furthermore, it is can even be called as a broader feature set until and unless the final system is accomplished. Now while discussing the model, chances are there that he concept of incremental development will also often be used liberally and interchangeably. This means incremental alterations made during the design and implementation of each new iteration.In the following post, we will get into the skin of the iterativ...

Kafka has become a very popular distributed message delivery service which decouples different services while making message delivery between service easy, fast and reliable. In this post, we will walk through how to install and set up Kafka on Windows.Pre-requisiteJavaApache ZooKeeperInstallationGo to Kafka's download link and download the latest stable release, we downloaded 2.2.0 as of this writing. After downloading, copy the installation file to some folder and unzip it. Since Kafka uses ZooKeeper, so you also need to install ZooKeeper, The download link is at http://zookeeper.a...

It is a common operation to move code from one branch to another branch in a multi-branch git repository. Normally there are two scenarios:Want to move all changes in one branch to another branch, now it's called git merge Want to move only some change/changes from one branch to another branch, now it's called git cherry-pickUsageThe purpose of git cherry-pick is to apply some change from one branch to another branch. git cherry-pick [commitHash]The above command is to apply the commit commitHash to the current working branch. It will create a new commit in the current working b...

This article is summarized from a question on Quora .The question is         What are some popular myths in software development?Here is the answer which received most votes given by a guy named Lee Semel,. Some of the most prevalent myths are:The Waterfall Method of design, the idea that it is both possible, efficient and good practice to completely specify a system before building it, and to execute the steps of a software project sequentially rather than iteratively. This was popularized by a paper that described the method as an example of poor development pra...

Open source itself is a successful product. It is not only liked by many personals, many famous enterprises like itAlthough there are numerous open source projects and open source products, which is the most successful among them? "Success" is defined as the widely used + well known here. In many successful open source products, only a minority leaders. Here we share 8 most successful open source products we think they deserve to be.LinuxReason: Linux + GNU = GNU / Linux. It has been almost 20 years since Linus Torvalds created a new OS kernel based Minix. During this time, most network server...

Git provides ways to securely connect to remote repository and clone remote repository to local machine. This post will teach you how to fix the "SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version" issue while cloning a remote repository.The issue would look like:If this error occurs, it is most probably caused by out of date git version being used.To improve its security awareness, some weak cryptographic algorithms have been disabled and all git clients should upgrade to latest ones to accomodate to the new security requirements. In the above error case, you should first check what git vers...