Stands

Stands are the central concept in PDM. Almost everything you do here comes down to finding the right stand, checking what is deployed on it and changing something if you need to.

What a stand is

A stand is a single environment of the platform: one deployed instance of all its applications with its own settings, its own versions and its own addresses. Technically a stand is a namespace in a Kubernetes cluster — an isolated part of the cluster that runs its own set of applications.

There is always more than one stand, because environments serve different purposes: one is used to verify new functionality, another runs load tests, a third one serves real users. Stands do not interfere with each other: changing an application version on a test stand has no effect on the rest.

Stands are grouped by clusters and projects:

• cluster — the site the environments are deployed on (the top level);
• project — a grouping of stands inside a cluster, showing which team or area the environment belongs to;
• stand — the environment itself.

Stand names repeat

The same short number or name can occur in different clusters. Before changing anything, make sure you have the right stand open: check the cluster it belongs to and the project label in the page header.

Where the list of stands lives

PDM has no separate page listing stands — the list lives in the sidebar and is visible on every page of the application. In a stand's row a coloured dot shows its state and the project is shown next to the name; the internal prj- prefix is not displayed in the list.

Search

The Search stands… field filters favourites and the tree at the same time: only stands whose name contains the text you typed remain, and clusters with no matches are hidden entirely.

Search also copes with the wrong keyboard layout — if you type a name in Cyrillic without switching the keyboard, the Latin name is still found.

Favorites

Stands marked with a star are collected in the Favorites block, both in the sidebar and on the home page. That helps when you constantly work with two or three environments out of several dozen.

What the statuses mean

PDM works the status of a stand out itself by polling the clusters regularly: it checks how many of the stand's applications are actually running compared to how many are expected.

Dot	Caption	What it means
Green	Operational	Everything that should be running is running
Orange	Degraded	Some applications are running, some are not
Red	Down	No application is running
Grey	Unknown	No data: the cluster did not answer the last check

“Unknown” is not “broken”

A grey status means PDM could not get data from the cluster, not that the stand is not working. Such gaps are accounted for separately in the availability statistics. See Monitoring for details.

Status dots refresh on their own, roughly once a minute. There is no need to reload the page.

Why you cannot see every stand

The list is filtered by your permissions: you only see the stands you have been granted access to. That is why a cluster may show two stands out of twenty — this is normal, the cluster is shown only so you can reach the environments available to you through it.

If a stand you know has disappeared from the list, the reason is usually permissions rather than a deleted environment. What to do in that case is described on the Permissions page.

What's next

• Stand page — tabs, applications and their versions, addresses and secrets.
• Stand configuration — how to view and change settings.
• Monitoring — availability, status history and what to do when a stand is down.