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Improved kubernetes error handling

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This commit is contained in:
James Wynn 2022-10-26 10:15:25 -05:00
parent 8887fcc3ee
commit 4fc6db49ca
8 changed files with 205 additions and 124 deletions
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71
src/pages/api/kubernetes/stats/[...service].js
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@ -2,15 +2,18 @@ import { CoreV1Api, Metrics } from "@kubernetes/client-node";
import getKubeConfig from "../../../../utils/config/kubernetes";
import { parseCpu, parseMemory } from "../../../../utils/kubernetes/kubernetes-utils";
import createLogger from "../../../../utils/logger";
const logger = createLogger("kubernetesStatsService");
export default async function handler(req, res) {
const APP_LABEL = "app.kubernetes.io/name";
const APP_LABEL = "app.kubernetes.io/name";
const { service } = req.query;
const [namespace, appName] = service;
if (!namespace && !appName) {
res.status(400).send({
error: "kubernetes query parameters are required",
error: "kubernetes query parameters are required"
});
return;
}
@ -20,12 +23,23 @@ export default async function handler(req, res) {
const kc = getKubeConfig();
const coreApi = kc.makeApiClient(CoreV1Api);
const metricsApi = new Metrics(kc);
const podsResponse = await coreApi.listNamespacedPod(namespace, null, null, null, null, labelSelector);
const pods = podsResponse.body.items;
const podsResponse = await coreApi.listNamespacedPod(namespace, null, null, null, null, labelSelector)
.then((response) => response.body)
.catch((err) => {
logger.error("Error getting pods: %d %s %s", err.statusCode, err.body, err.response);
return null;
});
if (!podsResponse) {
res.status(500).send({
error: "Error communicating with kubernetes"
});
return;
}
const pods = podsResponse.items;
if (pods.length === 0) {
res.status(200).send({
error: "not found",
res.status(404).send({
error: "not found"
});
return;
}
@ -46,34 +60,43 @@ export default async function handler(req, res) {
const stats = await pods.map(async (pod) => {
let depMem = 0;
let depCpu = 0;
const podMetrics = await metricsApi.getPodMetrics(namespace, pod.metadata.name);
podMetrics.containers.forEach((container) => {
depMem += parseMemory(container.usage.memory);
depCpu += parseCpu(container.usage.cpu);
});
const podMetrics = await metricsApi.getPodMetrics(namespace, pod.metadata.name)
.then((response) => response)
.catch((err) => {
// 404 generally means that the metrics have not been populated yet
if (err.statusCode !== 404) {
logger.error("Error getting pod metrics: %d %s %s", err.statusCode, err.body, err.response);
}
return null;
});
if (podMetrics) {
podMetrics.containers.forEach((container) => {
depMem += parseMemory(container.usage.memory);
depCpu += parseCpu(container.usage.cpu);
});
}
return {
mem: depMem,
cpu: depCpu
}
}).reduce(async (finalStats, podStatPromise) => {
const podStats = await podStatPromise;
return {
mem: finalStats.mem + podStats.mem,
cpu: finalStats.cpu + podStats.cpu
};
});
}).reduce(async (finalStats, podStatPromise) => {
const podStats = await podStatPromise;
return {
mem: finalStats.mem + podStats.mem,
cpu: finalStats.cpu + podStats.cpu
};
});
stats.cpuLimit = cpuLimit;
stats.memLimit = memLimit;
stats.cpuUsage = stats.cpu / cpuLimit;
stats.memUsage = stats.mem / memLimit;
stats.cpuUsage = cpuLimit ? stats.cpu / cpuLimit : 0;
stats.memUsage = memLimit ? stats.mem / memLimit : 0;
res.status(200).json({
stats,
stats
});
} catch (e) {
console.log("error", e);
logger.error(e);
res.status(500).send({
error: "unknown error",
error: "unknown error"
});
}
}

23
src/pages/api/kubernetes/status/[...service].js
View file

@ -1,6 +1,9 @@
import { CoreV1Api } from "@kubernetes/client-node";
import getKubeConfig from "../../../../utils/config/kubernetes";
import createLogger from "../../../../utils/logger";
const logger = createLogger("kubernetesStatusService");
export default async function handler(req, res) {
const APP_LABEL = "app.kubernetes.io/name";
@ -18,11 +21,22 @@ export default async function handler(req, res) {
try {
const kc = getKubeConfig();
const coreApi = kc.makeApiClient(CoreV1Api);
const podsResponse = await coreApi.listNamespacedPod(namespace, null, null, null, null, labelSelector);
const pods = podsResponse.body.items;
const podsResponse = await coreApi.listNamespacedPod(namespace, null, null, null, null, labelSelector)
.then((response) => response.body)
.catch((err) => {
logger.error("Error getting pods: %d %s %s", err.statusCode, err.body, err.response);
return null;
});
if (!podsResponse) {
res.status(500).send({
error: "Error communicating with kubernetes"
});
return;
}
const pods = podsResponse.items;
if (pods.length === 0) {
res.status(200).send({
res.status(404).send({
error: "not found",
});
return;
@ -34,7 +48,8 @@ export default async function handler(req, res) {
res.status(200).json({
status
});
} catch {
} catch (e) {
logger.error(e);
res.status(500).send({
error: "unknown error",
});

110
src/pages/api/widgets/kubernetes.js
View file

@ -2,59 +2,79 @@ import { CoreV1Api, Metrics } from "@kubernetes/client-node";
import getKubeConfig from "../../../utils/config/kubernetes";
import { parseCpu, parseMemory } from "../../../utils/kubernetes/kubernetes-utils";
import createLogger from "../../../utils/logger";
const logger = createLogger("kubernetes-widget");
export default async function handler(req, res) {
const { type } = req.query;
const kc = getKubeConfig();
const coreApi = kc.makeApiClient(CoreV1Api);
const metricsApi = new Metrics(kc);
try {
const kc = getKubeConfig();
const coreApi = kc.makeApiClient(CoreV1Api);
const metricsApi = new Metrics(kc);
const nodes = await coreApi.listNode();
const nodeCapacity = new Map();
let cpuTotal = 0;
let cpuUsage = 0;
let memTotal = 0;
let memUsage = 0;
const nodes = await coreApi.listNode()
.then((response) => response.body)
.catch((error) => {
logger.error("Error getting ingresses: %d %s %s", error.statusCode, error.body, error.response);
return null;
});
if (!nodes) {
return res.status(500).send({
error: "unknown error"
});
}
const nodeCapacity = new Map();
let cpuTotal = 0;
let cpuUsage = 0;
let memTotal = 0;
let memUsage = 0;
nodes.body.items.forEach((node) => {
nodeCapacity.set(node.metadata.name, node.status.capacity);
cpuTotal += Number.parseInt(node.status.capacity.cpu, 10);
memTotal += parseMemory(node.status.capacity.memory);
});
nodes.items.forEach((node) => {
nodeCapacity.set(node.metadata.name, node.status.capacity);
cpuTotal += Number.parseInt(node.status.capacity.cpu, 10);
memTotal += parseMemory(node.status.capacity.memory);
});
const nodeMetrics = await metricsApi.getNodeMetrics();
const nodeUsage = new Map();
nodeMetrics.items.forEach((metrics) => {
nodeUsage.set(metrics.metadata.name, metrics.usage);
cpuUsage += parseCpu(metrics.usage.cpu);
memUsage += parseMemory(metrics.usage.memory);
});
const nodeMetrics = await metricsApi.getNodeMetrics();
const nodeUsage = new Map();
nodeMetrics.items.forEach((metrics) => {
nodeUsage.set(metrics.metadata.name, metrics.usage);
cpuUsage += parseCpu(metrics.usage.cpu);
memUsage += parseMemory(metrics.usage.memory);
});
if (type === "cpu") {
return res.status(200).json({
cpu: {
usage: (cpuUsage / cpuTotal) * 100,
load: cpuUsage
}
if (type === "cpu") {
return res.status(200).json({
cpu: {
usage: (cpuUsage / cpuTotal) * 100,
load: cpuUsage
}
});
}
if (type === "memory") {
const SCALE_MB = 1024 * 1024;
const usedMemMb = memUsage / SCALE_MB;
const totalMemMb = memTotal / SCALE_MB;
const freeMemMb = totalMemMb - usedMemMb;
return res.status(200).json({
memory: {
usedMemMb,
freeMemMb,
totalMemMb
}
});
}
return res.status(400).json({
error: "invalid type"
});
} catch (e) {
logger.error("exception %s", e);
return res.status(500).send({
error: "unknown error"
});
}
if (type === "memory") {
const SCALE_MB = 1024 * 1024;
const usedMemMb = memUsage / SCALE_MB;
const totalMemMb = memTotal / SCALE_MB;
const freeMemMb = totalMemMb - usedMemMb;
return res.status(200).json({
memory: {
usedMemMb,
freeMemMb,
totalMemMb
}
});
}
return res.status(400).json({
error: "invalid type"
});
}