Mihai Perdum

Atlassian consultant and Forge developer at LeanZero. We do Data Center to Cloud migrations and build Forge apps, and I write up what I learn at leanzero.net.

Romania, Bucharest Joined on Sep 17, 2026 https://leanzero.net

Education

Mihail Sadoveanu

Work

LeanZero

Mihai Perdum

Oct 4

Rovo Agent Permissions vs CogniRunner Approvals

#cognirunner #jira

15 min read

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Mihai Perdum

Oct 4

How to Lock Attachments in Confluence Cloud

#confluence #atlassian #forge #sentinelvault

13 min read

Mihai Perdum

Oct 3

Suppressing the email when Jira Automation adds a comment (and why sendNotifications does nothing)

#jira #atlassian #automation #api

10 min read

Mihai Perdum

Oct 3

Repair the Confluence Cloud pages your migration quietly broke, one space at a time

#confluence #atlassian #migration #bash

10 min read

Mihai Perdum

Oct 3

Skip the migration writes that change nothing, without skipping the ones that matter

#atlassian #migration #confluence #javascript

9 min read

Mihai Perdum

Oct 3

Build your migration's gap list before you start, and make the differ refuse to guess

#atlassian #migration #jira #javascript

9 min read

Mihai Perdum

Oct 3

notifyUsers=false in Jira Cloud: four ways your test bed fakes a pass

#jira #atlassian #testing #api

16 min read

Mihai Perdum

Oct 3

Auditing a Jira Migration: a Wrong Field ID Counts to Zero, Not to an Error

#jira #atlassian #migration #javascript

23 min read

Mihai Perdum

Oct 3

Jira Data Center heap size and JVM tuning for a Cloud migration: setenv.sh and JCMA

#jira #atlassian #migration #java

39 min read

Mihai Perdum

Oct 3

Clearing the Done column in Jira Cloud: company-managed vs team-managed

#jira #atlassian #agile #tutorial

17 min read

Mihai Perdum

Oct 3

Jira automation rules do not migrate themselves

#jira #atlassian #migration #automation

17 min read

Mihai Perdum

Oct 3

Jira 32,767 characters limit: find the description and comment data a JCMA migration lost

#jira #atlassian #migration #bash

12 min read

Mihai Perdum

Oct 3

CSV Import Summary Field: Why It's Required and How It Breaks Your Data

#jira #atlassian #csv #tutorial

11 min read

Mihai Perdum

Oct 3

Jira API rate limit: see what CogniRunner spends

#cognirunner #jira #atlassian #forge

16 min read

Mihai Perdum

Oct 3

Export a Confluence Cloud space to a real folder tree, with only the attachments you want

#confluence #atlassian #javascript #tutorial

15 min read

Mihai Perdum

Oct 3

Confluence nested bodied macros before a Cloud migration: find them, triage them, fix them

#confluence #atlassian #migration #cloud

24 min read

Mihai Perdum

Oct 3

Confluence heap size for a Cloud migration: Data Center memory settings, Synchrony, CCMA

#confluence #atlassian #migration #java

46 min read

Mihai Perdum

Oct 3

Give a Jira workflow rule a memory that survives, without blowing the prompt budget

#jira #atlassian #ai #llm

12 min read

Mihai Perdum

Oct 3

Attach an API spec to a Jira workflow validator: what the CogniRunner AI rule never reads

#jira #atlassian #ai #forge

14 min read

Mihai Perdum

Oct 3

Confluence Data Classification Without Guard

#confluence #sentinelvault #atlassian #security

9 min read

Mihai Perdum

Oct 3

Six pieces of owner feedback, and what each one actually turned out to be

#atlassian #confluence #react #ux

12 min read

Mihai Perdum

Oct 3

The Jira form smart value that writes nothing and reports success

#jira #atlassian #automation #nocode

20 min read

Mihai Perdum

Oct 3

The migration report cannot audit the migration, and an audit that cannot see reports clean

#atlassian #jira #migration #testing

7 min read

Mihai Perdum

Oct 3

The migration plan that runs against the wrong tenant, and the check that lets it

#atlassian #migration #cloud #devops

10 min read

Mihai Perdum

Oct 3

Identity is the hard half of a Data Center migration. Cloud to Cloud hands it to you and charges you for the gaps instead.

#atlassian #migration #cloud #identity

9 min read

Mihai Perdum

Oct 3

Call a Forge App REST API with OAuth 2.0 (3LO)

#leanzero #atlassian #forge #jira

19 min read

Mihai Perdum

Oct 3

Your migrated workflow rules still run. That is not the same as still working

#atlassian #jira #migration #workflow

10 min read

Mihai Perdum

Oct 3

One person, two JSM customer accounts: what actually clears the duplicate after an email change

#jira #atlassian #servicedesk #itsm

14 min read

Mihai Perdum

Oct 3

Can a Jira sub-task sit directly under an epic? Yes — and only in company-managed projects

#jira #atlassian #agile #projectmanagement

16 min read

Mihai Perdum

Oct 3

Nobody will tell you what happened to the Jira reports that were retiring on 31 July

#jira #atlassian #agile #reporting

6 min read

Mihai Perdum

Oct 3

Your Jira filters survived the migration. That's the bug.

#atlassian #jira #migration #jql

17 min read

Mihai Perdum

Oct 3

I said the certificate was a receipt. Then I collected four of them in two months

#atlassian #certification #jira #career

8 min read

Mihai Perdum

Oct 3

Jira Automation Rules API: Two New Agent Skills

#ai #jira #migration #cloud

10 min read

Mihai Perdum

Oct 3

CogniRunner is no longer open source. Here is what that changes, and what it does not.

#atlassian #jira #opensource #forge

4 min read

Mihai Perdum

Oct 3

CogniRunner 3.3.0: it no longer waits for a transition

#jira #atlassian #forge #automation

12 min read

Mihai Perdum

Oct 3

Atlassian Migrations — The Deadline Nobody's Watching (It Isn't 2029)

#atlassian #migration #cloud #jira

6 min read

Mihai Perdum

Oct 3

Atlassian Migrations — Nobody's Paid to Make It Smaller (Including Me)

#atlassian #migration #cloud #consulting

8 min read

Mihai Perdum

Oct 3

Atlassian Cloud Architecture: Organization, Site, Product, and What a Migration Crosses

#atlassian #cloud #migration #architecture

13 min read

Mihai Perdum

Oct 3

303 is not an error: how an attachment migration ships zero bytes

#atlassian #migration #http #cloud

15 min read

Mihai Perdum

Oct 3

ACP practice exams: one question, then all 2,990

#atlassian #certification #learning #testing

7 min read

Mihai Perdum

Oct 3

The free ACP practice exams just lost 250 questions. That was the point

#atlassian #certification #jira #learning

10 min read

Mihai Perdum

Oct 3

A candidate found four bad practice questions. Here is what we did about it

#atlassian #certification #testing #learning

11 min read

Mihai Perdum

Oct 2

Atlassian Migrations — The Three Pre-Migration Fires Nobody Talks About

#atlassian #jira #cloud #migration

14 min read

Mihai Perdum

Oct 2

Making Atlassian Cloud Migrations Predictable

#atlassian #jira #migration #sql

21 min read

Mihai Perdum

Oct 2

Microsoft Graph to Jira Assets User Ingestion

#jira #atlassian #microsoft #javascript

14 min read

Mihai Perdum

Oct 2

Transitioning from Data Center to Cloud: How Atlassian's Edge Security Stack Fills the Gap Left by Cloudflare

#atlassian #cloud #security #migration

15 min read

Mihai Perdum

Oct 2

The Jira Cloud Default Value Trap: When "None" Disappears and How to Get It Back

#jira #atlassian #tutorial #api

7 min read

Mihai Perdum

Oct 2

Refined Sites for Jira Service Management: The Honest Assessment

#jira #atlassian #itsm #review

13 min read

Mihai Perdum

Oct 2

How to Block Time Logging on Specific Work Types in Jira Cloud (Using Workflow Properties)

#jira #atlassian #tempo #workflow

6 min read

Mihai Perdum

Oct 2

Atlassian Migrations — THE TRUTH (Subjectively)

#atlassian #jira #cloud #migration

11 min read

Mihai Perdum

Oct 2

Uploading Attachments to Jira Service Management Cloud Assets Without Public API Documentation

#jira #atlassian #api #javascript

6 min read

Mihai Perdum

Oct 2

Atlassian Migrations — The App Problem Nobody Warned You About

#atlassian #jira #cloud #migration

13 min read

Mihai Perdum

Oct 2

Bitbucket app passwords: move to API tokens

#bitbucket #git #atlassian #devops

19 min read

Mihai Perdum

Oct 2

Bitbucket app passwords removal: what breaks

#bitbucket #git #atlassian #devops

13 min read

Mihai Perdum

Oct 2

Bitbucket CHANGE-3222 410 after API token: fix

#bitbucket #git #atlassian #devops

18 min read

Mihai Perdum

Oct 2

Jira coding agent for GitHub: CogniRunner Coder

#cognirunner #jira #ai #github

15 min read

Mihai Perdum

Oct 2

Sentinel Vault: Runs on Atlassian AI apps

#confluence #forge #atlassian #ai

17 min read

Mihai Perdum

Oct 1

CogniRunner: Jira OpenAI Key for Workflow Rules

#cognirunner #forge #jira #ai

15 min read

Mihai Perdum

Sep 30

We couldn't export Custom Field Config Scheme

#jira #migration #cloud #atlassian

10 min read

Mihai Perdum

Sep 29

Forge App Access Rule: Handle Blocked Content

#forge #jira #atlassian #security

19 min read

2 Week Community Wellness Streak

1 Week Community Wellness Streak

Writing Debut

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