Upgrading Sonatype nexus from 1.5 to 1.6

Here are the steps followed while upgrading Sonatype nexus server from 1.5 to 1.6 version in Linux server (RHEL)

Jira workflows - Dealing with validator

Recently I got a request to make certain fields mandatory while marking a issue as 'Fix' (A step in our workflow'). Initially I made the requested custom fields as 'Required' in Field configuration, but it screwed !!!. After this change it started asking to provide values for fields which are not visible in 'create' page.
Finally I learnt it needs to be configured in Workflows validator.
I'm sharing my learning's here.

Introduction
Workflow is the place where we define business process. A JIRA workflow is the set of steps (or statuses) and transitions that an issue goes through during its lifecycle.
The below picture represents the default Jira workflow.

JIRA workflows consist of steps and transitions:
  A step represents a workflow's current status for an issue.An issue can exist in one step only at any point in time. In the diagram above the rectangular boxes represent steps/statuses.
 A transition is a link between two steps. A transition allows an issue to move from one step to another step. A transition is a one-way link, so if an issue needs to move back and forth between two steps, two transitions need to be created. In the diagram above the arrows represent transitions.

jenkins nested views not displaying with read permissions after upgrade

Today I upgraded Jenkins from 1.444 version to 1.470 and to my surprise it was not showing any nested views for anonymous users. It was showing only the default 'All' view. But if we login to jenkins, then it shows all nested views.

When I googled I found this relevant link https://issues.jenkins-ci.org/browse/JENKINS-13429

As suggested I had already had Jenkins version > 1.459, Nested View Plugin 1.8. But I didn't had Role-based Authorization Strategy. Even I added this plugin to my jenkins.

Then I realized that this issue can fixed without adding Role based Authorization Strategy.

We are already using 'Project-based Matrix Authorization Strategy' and migrating to Role based authorization will be some additional tasks, which I didn't wanted to do.

Anyways the solution is enable 'Anonymous' account 'Read' 'View' in 'Project-based Matrix Authorization Strategy'

Here is the detailed way of doing it

Login to Jenkins -> Manage Jenkins -> Configure System -> Access Control -> Authorization -> Project-based Matrix Authorization Strategy

For Anonymous user -> View section -> Click 'Read'

How to run dos commands from cygwin? File name too long - fix

Typically we write shell scripts and run it under cygwin shell. The command used in scripts like rm, mv are obtained from cygwin installation. But recently we encountered a tedious issue with cygwin shell.
The 'rm' command run from cygwin fails with message "File name too long" for some of the files and it's causing build failure.

After a bit of research, I found there is a limit for file name length in cygwin (I guess 256 characters). Upgrading the cygwin may fix the issue, but I didn't want to do that.

Fix: I found that the native dos 'rmdir' command can delete these lengthy file names without any issue and hence I decided to call native dos commands from Shell scripts.

Here is a way to call native dos commands from cygwin shell
  cmd /C rmdir /S /Q <directory>


here
   cmd   -  Starts a new instance of the Windows command interpreter
       /C   - Carries out the command specified by string and then terminates

  rmdir - dos command to delete directory
     /S - recursive delete of files & sub-directories
     /Q  - Quiet


Just add this command to shell script. It may need some if condition to run this only on Windows platform.