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new 0418647b270 Blog: Meet Horizon UI 13/17 — Platform & Cluster
Introspection (EN & CN) (#881)
0418647b270 is described below
commit 0418647b270beac8fda2c2b2c6c631c10f722163
Author: 吴晟 Wu Sheng <[email protected]>
AuthorDate: Tue Jun 30 11:41:39 2026 +0800
Blog: Meet Horizon UI 13/17 — Platform & Cluster Introspection (EN & CN)
(#881)
Part 13 of the Meet Horizon UI series, closing Act 3 (operate). Three
read-only introspection surfaces under Platform monitoring: Cluster Status
(the two-port + Zipkin health view with live admin-module probes), OAP
Configuration (the effective runtime-config dump, grouped and masked,
read-only), and Data Retention (per-class TTLs — a single number on a flat
backend like Elasticsearch, hot/warm/cold lifecycle bars on BanyanDB). The
version split: query-port surfaces work on any OAP, admin-host surfaces need
OAP 11. English and Chinese posts, 3 shared figures (WebP).
---
.../index.md | 50 ++++++++++++++++++++
.../index.md | 52 +++++++++++++++++++++
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.../horizon-0.7.0/p13-platform-02-oap-config.webp | Bin 0 -> 162398 bytes
.../p13-platform-03-data-retention.webp | Bin 0 -> 163104 bytes
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+---
+title: "Meet Horizon UI · 13/17: Platform & Cluster Introspection"
+date: 2026-06-30
+author: Sheng Wu
+description: "Part 13 of the Meet Horizon UI series: three read-only
introspection surfaces that turn the lens on the backend itself — Cluster
Status (is OAP healthy, across which ports), OAP Configuration (the effective
runtime config), and Data Retention (how long each class of data lives,
including BanyanDB's hot/warm/cold lifecycle)."
+tags:
+ - Engineering
+ - Cloud Native
+---
+
+This is the thirteenth post in the [Meet Horizon
UI](/blog/2026-06-21-skywalking-horizon-ui-introduction/) series, and the last
stop in **Act 3 — operate it**. The earlier operate posts were about acting
*on* the backend — alarms, runtime rules, the live debugger, cross-layer
inspect. This one turns the lens around onto the backend *itself*: is it
healthy, how is it configured, and how long does it keep your data? Three
read-only surfaces under **Platform monitoring** answer exactly thos [...]
+
+## Cluster Status: is the backend healthy, and on which port?
+
+Horizon talks to OAP over more than one channel, and **Cluster Status** shows
the health of each one separately. It's a two-port view with a third,
independent probe:
+
+- **Query / GraphQL (`:12800`)** — the port every observability page rides. It
reports OAP's version, the server's timezone and clock (next to your
browser's), and OAP's own health score. This works on any OAP, 10.x included.
+- **Admin host (`:17128`)** — the port the *operate* features need. Each admin
module is probed **live**: the page GETs the exact REST path the feature calls
and reports whether it answers, alongside the `SW_…` env var that enables it
and what breaks if it's down — `admin-server`, `receiver-runtime-rule`,
`dsl-debugging`, `inspect`, `ui-management`. This host ships with OAP 11, so on
a 10.x backend the pane simply isn't there.
+- **Zipkin / OTLP (`:9412`)** — informational: it feeds only the Zipkin trace
menu, so a red dot here leaves every other page working.
+
+All three are polled independently, so one going red never drags the others
down — which is precisely what makes this the first page to open when something
elsewhere in Horizon looks off.
+
+
+Figure 1: Cluster Status — a two-port health view. The Query pane (`:12800`,
any OAP) shows version, server time, and health score; the Admin pane
(`:17128`, OAP 11) probes each admin module live with its REST path, the `SW_…`
env var that enables it, and what breaks if it's unreachable; the Zipkin/OTLP
pane feeds only the Zipkin menu.</br>
+
+## OAP Configuration: what is it actually running?
+
+When a setting doesn't behave the way you expect, the next question is "what
config did OAP actually resolve?" **OAP Configuration** answers it without an
SSH session: it reads the connected backend's effective runtime config from the
admin port's `/debugging/config/dump`, grouped by module and searchable across
keys *and* values. Secret values — passwords, tokens, access keys — are masked
to `******` by OAP itself before Horizon ever sees them. It's strictly
read-only; to change a value [...]
+
+
+Figure 2: OAP Configuration — the connected backend's resolved runtime config
from the admin port, grouped by module and filterable, with secrets masked to
`******` by OAP. Read-only: change config on the OAP side and restart.</br>
+
+## Data Retention: how long does it keep your data?
+
+**Data Retention** shows OAP's time-to-live for each class of data, in whole
days — records (trace, log, browser error, …) and metrics (metadata, minute,
hour, day). And here the storage backend matters. On a flat store like
**Elasticsearch**, each class has one retention number, full stop. On
**BanyanDB**, data ages through configurable lifecycle stages — **hot**,
optionally **warm**, optionally **cold** — and OAP reports the hot and warm
stages as one combined, queryable window. So Hor [...]
+
+There's one operational subtlety the page calls out: the topbar **Cold** pill
swaps reads from hot+warm to cold — it doesn't *union* them — so it's worth
enabling only when the window you're after is older than the hot+warm boundary.
Data Retention reads through the standard query port, so unlike the two pages
above it works on any OAP version.
+
+
+Figure 3: Data Retention — on BanyanDB, each class ages through hot → warm →
cold, so Horizon draws lifecycle bars (the queryable hot+warm window plus cold,
widths proportional to total days). A flat backend like Elasticsearch would
show a single TTL per class instead.</br>
+
+## Where it runs
+
+All three live under **Platform monitoring**, each gated by its own read
permission — `cluster:read`, `config:read`, `ttl:read` — and all three are
strictly read-only: this is introspection, not control. They split on the
backend the same way the rest of operate does. Data Retention and the
Cluster-Status *Query* pane ride the standard query port, so they work on any
OAP, 10.x included. The Cluster-Status *Admin* pane and OAP Configuration read
the admin host, which arrives with OAP 11 — [...]
+
+## Where to go next
+
+For the field reference — every pane, the config-dump shape, and the BanyanDB
lifecycle details — see the [Cluster
Status](https://skywalking.apache.org/docs/skywalking-horizon-ui/next/operate/cluster-metadata/),
[OAP
Configuration](https://skywalking.apache.org/docs/skywalking-horizon-ui/next/operate/oap-configuration/),
and [Data
Retention](https://skywalking.apache.org/docs/skywalking-horizon-ui/next/operate/data-retention/)
docs.
+
+That closes **Act 3 — operate it**. Next up, **Act 4 — govern & secure it**,
starting with **Access Control & Security**: server-enforced RBAC, LDAP/AD, the
audit log, and break-glass.
diff --git a/content/zh/2026-06-30-horizon-ui-platform-introspection/index.md
b/content/zh/2026-06-30-horizon-ui-platform-introspection/index.md
new file mode 100644
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--- /dev/null
+++ b/content/zh/2026-06-30-horizon-ui-platform-introspection/index.md
@@ -0,0 +1,52 @@
+---
+title: "认识 Horizon UI · 13/17：平台与集群自检"
+date: 2026-06-30
+author: 吴晟
+description: "Horizon UI 系列第十三篇：Platform monitoring 下的三个只读入口，用来查看 OAP
集群是否健康、实际运行配置是什么，以及各类数据会保留多久，包括 BanyanDB 的 hot/warm/cold 生命周期。"
+tags:
+ - Engineering
+ - Cloud Native
+---
+
+*译自英文原文：[Meet Horizon UI · 13/17: Platform & Cluster
Introspection](/blog/2026-06-30-horizon-ui-platform-introspection/)。*
+
+这是 [Meet Horizon UI](/zh/2026-06-21-skywalking-horizon-ui-introduction/)
系列的第十三篇，也是第三幕 **operate it** 的最后一篇。前几篇 operate 文章讲的是怎么操作后端：告警、运行时规则、Live
Debugger、跨 layer Inspect。这一篇反过来看后端本身：它现在是否健康？实际加载了哪些配置？数据会保留多久？**Platform
monitoring** 下的三个只读页面回答这些问题。这里没有开关，只给排障时需要的事实。
+
+## Cluster Status：后端是否健康，哪些端口可用？
+
+Horizon 和 OAP 通信不只走一个通道，**Cluster Status**
会把每个通道的健康状态分开显示。可以把它看成两个端口的健康视图，外加一个独立探针：
+
+- **Query / GraphQL（`:12800`）**：所有 observability 页面都依赖这个端口。它会显示 OAP
版本、服务端时区和时钟（并排展示浏览器时间），以及 OAP 自己的健康评分。这个部分兼容任意 OAP，包括 10.x。
+- **Admin host（`:17128`）**：operate 功能依赖这个端口。页面会对每个 admin module 做**实时探测**：直接
GET 功能实际调用的 REST path，并显示它是否可达、启用它的 `SW_...` 环境变量，以及它不可用时哪些功能会受影响。这里包括
`admin-server`、`receiver-runtime-rule`、`dsl-debugging`、`inspect`、`ui-management`。Admin
host 随 OAP 11 提供，所以 10.x 后端上不会显示这个面板。
+- **Zipkin / OTLP（`:9412`）**：这是信息性探针，只影响 Zipkin trace 菜单。这里红了，其他页面仍然正常工作。
+
+三个面板独立轮询；其中一个变红，不会影响另外两个的判断。正因为这样，当 Horizon 里其他地方看起来不对劲时，Cluster Status
是最适合先打开的页面。
+
+
+图 1：Cluster Status 是一个双端口健康视图。Query 面板（`:12800`，任意 OAP）显示版本、服务端时间和健康评分；Admin
面板（`:17128`，OAP 11）用实际 REST path 实时探测每个 admin module，并显示启用它的 `SW_...`
环境变量和不可达时受影响的功能；Zipkin/OTLP 面板只服务 Zipkin 菜单。</br>
+
+## OAP Configuration：实际运行的配置是什么？
+
+当某个配置项表现得和预期不一样，下一步通常是确认：OAP 最终到底解析出了什么配置？**OAP Configuration** 让你不用 SSH
到后端，也能看到这个答案。它从 admin port 的 `/debugging/config/dump` 读取当前连接后端的有效运行时配置，按 module
分组，并支持同时搜索 key 和 value。密码、token、access key 这类敏感值会由 OAP 自己在返回前 mask 成
`******`，Horizon 看到的就是脱敏后的内容。这个页面严格只读；如果要改配置，仍然需要在 OAP 侧修改并重启。和上面的 Admin
面板一样，它依赖 OAP 11 的 admin host。
+
+
+图 2：OAP Configuration 展示当前连接后端解析后的运行时配置，数据来自 admin port；配置按 module
分组，可以过滤，敏感值由 OAP mask 成 `******`。页面只读：修改配置仍然要在 OAP 侧完成并重启。</br>
+
+## Data Retention：数据会保留多久？
+
+**Data Retention** 展示 OAP 为各类数据设置的
time-to-live，单位是整天：records（trace、log、browser error 等）和
metrics（metadata、minute、hour、day）都会列出来。这里还要看存储后端。像 **Elasticsearch**
这样的平面存储，每类数据只有一个 retention 数字。在 **BanyanDB** 中，数据会按可配置的生命周期阶段流转：**hot**、可选的
**warm**、可选的 **cold**。OAP 会把 hot 和 warm 合并报告为一个可查询窗口，所以 Horizon
不再只显示单个数字，而是为每类数据画一条 **lifecycle bar**：前半段是 **hot+warm** 窗口，后面接 **cold**
尾段，宽度按总天数比例展示。这样你可以一眼看出各阶段相对持续多久。
+
+页面还特别提醒一个操作细节：topbar 里的 **Cold** pill 会把查询切到 cold 数据，它不是把 hot+warm 和 cold
合并查询。所以只有当你要看的时间窗口已经早于 hot+warm 边界时，才值得打开它。Data Retention 走标准 query
port，因此不同于前两个页面，它兼容任意 OAP 版本。
+
+
+图 3：Data Retention：在 BanyanDB 上，每类数据会经历 hot → warm → cold 生命周期，所以 Horizon 用
lifecycle bar 展示可查询的 hot+warm 窗口和 cold 尾段，宽度按总天数比例计算。平面存储如 Elasticsearch
则会显示每类数据的单个 TTL。</br>
+
+## 它在哪里运行
+
+这三个页面都在 **Platform monitoring**
下，各自有独立的读权限：`cluster:read`、`config:read`、`ttl:read`。它们都严格只读：这里做的是自检，不是控制。后端接入方式也延续了
operate 里的分层。Data Retention 和 Cluster Status 的 *Query* 面板走标准 query port，因此兼容任意
OAP，包括 10.x。Cluster Status 的 *Admin* 面板和 OAP Configuration 则读取 OAP 11 才提供的
admin host；如果后端没有这个端口，页面会明确说明原因，比如隐藏面板，或者显示“需要 admin
host”的提示，而不是直接报错。（这里关注的是平台健康和配置；OAP 自观测的 dashboard 是另一条基于 metrics 的线。）
+
+## 后续阅读
+
+字段参考，包括每个面板、config dump 结构和 BanyanDB 生命周期细节，可以看 [Cluster
Status](https://skywalking.apache.org/docs/skywalking-horizon-ui/next/operate/cluster-metadata/)、[OAP
Configuration](https://skywalking.apache.org/docs/skywalking-horizon-ui/next/operate/oap-configuration/)
和 [Data
Retention](https://skywalking.apache.org/docs/skywalking-horizon-ui/next/operate/data-retention/)
文档。
+
+到这里，**Act 3 — operate it** 结束。下一篇进入 **Act 4 — govern & secure it**，从 **Access
Control & Security** 开始：服务端强制执行的 RBAC、LDAP/AD、audit log，以及 break-glass。
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