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A Single SLO panel displays the availability of one service level objective (SLO) across up to three time windows at once. It doesn’t use a query. You select an SLO, and the panel computes its availability for you. Instead of a single value, though, it compares that SLO over several windows. A Single SLO panel renders two views of the selected SLO:
  • A row of stat tiles, one per time window, each showing the SLO’s availability for that window.
  • An optional signal breakdown table that lists the SLO’s individual signals, with columns identifying each signal’s labels and its availability in every time window.
Use a Single SLO panel to compare an SLO’s recent health against a longer baseline, such as the last 30 days next to the last 90 days. It also surfaces which underlying signals are reducing availability against the objective. From the panel’s Options menu, select View SLO to open the selected SLO’s detail page. To create a panel or learn more about the configuration options common to all panels, see Panels.

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Single SLO panel data

A Single SLO panel doesn’t use a query. The panel derives its values from the SLO you select. In the Edit panel interface, configure the panel on the SLO and Settings tabs. The Query tab isn’t shown.

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Signal breakdown table

A signal is a group the SLO tracks separately, defined by its signal grouping: a combination of the labels the SLO groups by, or an individual series when the SLO alerts by series. The signal breakdown table lists one row per signal, with a column for each of the SLO’s signal labels identifying it and a column for each configured time window showing that signal’s availability. Use it to find the signals negatively impacting the objective. To open the SLO’s detail page filtered to a signal, select the row’s View signal link. A row with no signal labels doesn’t have a link. The table appears only when the SLO has signals to break down, meaning an SLO that groups by signal labels or reports a signal per series. When more than 500 signals qualify, the panel lists the 500 with the lowest availability and shows the message Showing the 500 signals with the lowest availability.

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Configure a Single SLO panel

You can configure a Single SLO panel by editing the panel and using the SLO and Settings tabs. Any changes you make in the panel’s SLO or Settings tab are immediately reflected in the Preview pane, but take effect only when you click Apply in the Edit panel interface and then Save the dashboard. Cortex XCOR doesn’t fully support directly editing a panel’s JSON representation. To configure a panel, edit it and modify individual fields. Use the JSON representation only for managing your configuration as code with tools such as Chronoctl and Terraform.

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Select the SLO and filter the data

On the SLO tab:
  • Select a Service Level Objective: The SLO whose availability the panel renders. Each panel displays exactly one SLO.
  • Filter by signal label or dimension: Optional label matchers that scope the panel to part of the SLO, such as a single cluster or region. Each filter consists of a label name, an operator, and a value. Supported operators are:
    • =: The label equals the value.
    • !=: The label doesn’t equal the value.
    • =~: The label matches the value as a regular expression.
    • !~: The label doesn’t match the value as a regular expression.
    You can use list dashboard variables as filter values.

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Choose the time windows

On the Settings tab, use the Time window (up to 3) group to add or remove windows. A Single SLO panel compares up to three time windows, each shown as its own stat tile and as a column in the signal breakdown table. At least one window is required. Configure each window with the Time window dropdown, which offers common presets, and the From and To fields, which show the window’s start and end:
  • Dashboard time: Computes availability over the dashboard’s currently selected time range.
  • Last 7 days, Last 30 days, Last 90 days: A rolling window of the selected length ending now, independent of the dashboard’s time range.
  • Week to date, Month to date: A window from the start of the current week or month through now.
  • Custom: Any From/To pair that doesn’t match a preset.
Selecting a preset fills in From and To for you. Each endpoint is a now-relative expression, such as now-7d or now/w, or an absolute ISO 8601 timestamp. A new panel starts with three windows: the last 7 days, the last 30 days, and the last 90 days.

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Choose what the panel shows

In the Display section, choose whether the panel renders the stat tiles, the signal breakdown table, or both:
  • Show stat tiles: Displays the row of tiles, one per time window. Enabled by default.
  • Show signal table: Displays the signal breakdown table. Disabled by default, and available only for an SLO with signal grouping or per-series alerting.
The panel always keeps at least one of the two views visible. You can’t hide stat tiles while the signal table is hidden or unavailable, or hide the signal table while stat tiles are hidden. Use the Decimals dropdown in the same section to set the number of decimal places Cortex XCOR uses when it displays an availability percentage, in both the stat tiles and the breakdown table. Choose a value from 0 to 5 decimal places. The default is 3.

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Modify the stat tiles’ display

In the Stat tiles section, configure display options that apply to every tile in the row:
  • Show error budget: Displays the SLO’s remaining error budget. Enabled by default.
  • Show target: Displays the SLO’s objective target. Enabled by default.
  • Show spark line: Displays a sparkline of availability over the window beneath the value. Disabled by default.