public/rancher-docs
1
0
Fork 0
mirror of https://github.com/rancher/rancher-docs.git synced 2026-09-27 13:38:07 +00:00
Code Issues Packages Projects Releases Wiki Activity
Files
gh-pages
rancher-docs/assets/js/dcbf8028.a3c39d15.js
T

593 lines
28 KiB
JavaScript
Raw Permalink Blame History

"use strict";
(self["webpackChunkrancher_docs"] = self["webpackChunkrancher_docs"] || []).push([[67600],{
/***/ 3905:
/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */ Zo: () => (/* binding */ MDXProvider),
/* harmony export */ kt: () => (/* binding */ createElement)
/* harmony export */ });
/* unused harmony exports MDXContext, useMDXComponents, withMDXComponents */
/* harmony import */ var react__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(67294);
function _defineProperty(obj, key, value) {
if (key in obj) {
Object.defineProperty(obj, key, {
value: value,
enumerable: true,
configurable: true,
writable: true
});
} else {
obj[key] = value;
}
return obj;
}
function _extends() {
_extends = Object.assign || function (target) {
for (var i = 1; i < arguments.length; i++) {
var source = arguments[i];
for (var key in source) {
if (Object.prototype.hasOwnProperty.call(source, key)) {
target[key] = source[key];
}
}
}
return target;
};
return _extends.apply(this, arguments);
}
function ownKeys(object, enumerableOnly) {
var keys = Object.keys(object);
if (Object.getOwnPropertySymbols) {
var symbols = Object.getOwnPropertySymbols(object);
if (enumerableOnly) symbols = symbols.filter(function (sym) {
return Object.getOwnPropertyDescriptor(object, sym).enumerable;
});
keys.push.apply(keys, symbols);
}
return keys;
}
function _objectSpread2(target) {
for (var i = 1; i < arguments.length; i++) {
var source = arguments[i] != null ? arguments[i] : {};
if (i % 2) {
ownKeys(Object(source), true).forEach(function (key) {
_defineProperty(target, key, source[key]);
});
} else if (Object.getOwnPropertyDescriptors) {
Object.defineProperties(target, Object.getOwnPropertyDescriptors(source));
} else {
ownKeys(Object(source)).forEach(function (key) {
Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key));
});
}
}
return target;
}
function _objectWithoutPropertiesLoose(source, excluded) {
if (source == null) return {};
var target = {};
var sourceKeys = Object.keys(source);
var key, i;
for (i = 0; i < sourceKeys.length; i++) {
key = sourceKeys[i];
if (excluded.indexOf(key) >= 0) continue;
target[key] = source[key];
}
return target;
}
function _objectWithoutProperties(source, excluded) {
if (source == null) return {};
var target = _objectWithoutPropertiesLoose(source, excluded);
var key, i;
if (Object.getOwnPropertySymbols) {
var sourceSymbolKeys = Object.getOwnPropertySymbols(source);
for (i = 0; i < sourceSymbolKeys.length; i++) {
key = sourceSymbolKeys[i];
if (excluded.indexOf(key) >= 0) continue;
if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue;
target[key] = source[key];
}
}
return target;
}
var isFunction = function isFunction(obj) {
return typeof obj === 'function';
};
var MDXContext = /*#__PURE__*/react__WEBPACK_IMPORTED_MODULE_0__.createContext({});
var withMDXComponents = function withMDXComponents(Component) {
return function (props) {
var allComponents = useMDXComponents(props.components);
return /*#__PURE__*/React.createElement(Component, _extends({}, props, {
components: allComponents
}));
};
};
var useMDXComponents = function useMDXComponents(components) {
var contextComponents = react__WEBPACK_IMPORTED_MODULE_0__.useContext(MDXContext);
var allComponents = contextComponents;
if (components) {
allComponents = isFunction(components) ? components(contextComponents) : _objectSpread2(_objectSpread2({}, contextComponents), components);
}
return allComponents;
};
var MDXProvider = function MDXProvider(props) {
var allComponents = useMDXComponents(props.components);
return /*#__PURE__*/react__WEBPACK_IMPORTED_MODULE_0__.createElement(MDXContext.Provider, {
value: allComponents
}, props.children);
};
var TYPE_PROP_NAME = 'mdxType';
var DEFAULTS = {
inlineCode: 'code',
wrapper: function wrapper(_ref) {
var children = _ref.children;
return /*#__PURE__*/react__WEBPACK_IMPORTED_MODULE_0__.createElement(react__WEBPACK_IMPORTED_MODULE_0__.Fragment, {}, children);
}
};
var MDXCreateElement = /*#__PURE__*/react__WEBPACK_IMPORTED_MODULE_0__.forwardRef(function (props, ref) {
var propComponents = props.components,
mdxType = props.mdxType,
originalType = props.originalType,
parentName = props.parentName,
etc = _objectWithoutProperties(props, ["components", "mdxType", "originalType", "parentName"]);
var components = useMDXComponents(propComponents);
var type = mdxType;
var Component = components["".concat(parentName, ".").concat(type)] || components[type] || DEFAULTS[type] || originalType;
if (propComponents) {
return /*#__PURE__*/react__WEBPACK_IMPORTED_MODULE_0__.createElement(Component, _objectSpread2(_objectSpread2({
ref: ref
}, etc), {}, {
components: propComponents
}));
}
return /*#__PURE__*/react__WEBPACK_IMPORTED_MODULE_0__.createElement(Component, _objectSpread2({
ref: ref
}, etc));
});
MDXCreateElement.displayName = 'MDXCreateElement';
function createElement (type, props) {
var args = arguments;
var mdxType = props && props.mdxType;
if (typeof type === 'string' || mdxType) {
var argsLength = args.length;
var createElementArgArray = new Array(argsLength);
createElementArgArray[0] = MDXCreateElement;
var newProps = {};
for (var key in props) {
if (hasOwnProperty.call(props, key)) {
newProps[key] = props[key];
}
}
newProps.originalType = type;
newProps[TYPE_PROP_NAME] = typeof type === 'string' ? type : mdxType;
createElementArgArray[1] = newProps;
for (var i = 2; i < argsLength; i++) {
createElementArgArray[i] = args[i];
}
return react__WEBPACK_IMPORTED_MODULE_0__.createElement.apply(null, createElementArgArray);
}
return react__WEBPACK_IMPORTED_MODULE_0__.createElement.apply(null, args);
}
/***/ }),
/***/ 70838:
/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {
__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */ assets: () => (/* binding */ assets),
/* harmony export */ contentTitle: () => (/* binding */ contentTitle),
/* harmony export */ "default": () => (/* binding */ MDXContent),
/* harmony export */ frontMatter: () => (/* binding */ frontMatter),
/* harmony export */ metadata: () => (/* binding */ metadata),
/* harmony export */ toc: () => (/* binding */ toc)
/* harmony export */ });
/* harmony import */ var react__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(67294);
/* harmony import */ var _mdx_js_react__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(3905);
/* @jsxRuntime classic */ /* @jsx mdx */ /* @jsxFrag React.Fragment */ function _define_property(obj, key, value) {
if (key in obj) {
Object.defineProperty(obj, key, {
value: value,
enumerable: true,
configurable: true,
writable: true
});
} else {
obj[key] = value;
}
return obj;
}
function _object_spread(target) {
for(var i = 1; i < arguments.length; i++){
var source = arguments[i] != null ? arguments[i] : {};
var ownKeys = Object.keys(source);
if (typeof Object.getOwnPropertySymbols === "function") {
ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function(sym) {
return Object.getOwnPropertyDescriptor(source, sym).enumerable;
}));
}
ownKeys.forEach(function(key) {
_define_property(target, key, source[key]);
});
}
return target;
}
function ownKeys(object, enumerableOnly) {
var keys = Object.keys(object);
if (Object.getOwnPropertySymbols) {
var symbols = Object.getOwnPropertySymbols(object);
if (enumerableOnly) {
symbols = symbols.filter(function(sym) {
return Object.getOwnPropertyDescriptor(object, sym).enumerable;
});
}
keys.push.apply(keys, symbols);
}
return keys;
}
function _object_spread_props(target, source) {
source = source != null ? source : {};
if (Object.getOwnPropertyDescriptors) {
Object.defineProperties(target, Object.getOwnPropertyDescriptors(source));
} else {
ownKeys(Object(source)).forEach(function(key) {
Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key));
});
}
return target;
}
function _object_without_properties(source, excluded) {
if (source == null) return {};
var target = _object_without_properties_loose(source, excluded);
var key, i;
if (Object.getOwnPropertySymbols) {
var sourceSymbolKeys = Object.getOwnPropertySymbols(source);
for(i = 0; i < sourceSymbolKeys.length; i++){
key = sourceSymbolKeys[i];
if (excluded.indexOf(key) >= 0) continue;
if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue;
target[key] = source[key];
}
}
return target;
}
function _object_without_properties_loose(source, excluded) {
if (source == null) return {};
var target = {};
var sourceKeys = Object.keys(source);
var key, i;
for(i = 0; i < sourceKeys.length; i++){
key = sourceKeys[i];
if (excluded.indexOf(key) >= 0) continue;
target[key] = source[key];
}
return target;
}
const frontMatter = {
title: 'Networking'
};
const contentTitle = undefined;
const metadata = {
"unversionedId": "troubleshooting/other-troubleshooting-tips/networking",
"id": "version-2.9/troubleshooting/other-troubleshooting-tips/networking",
"title": "Networking",
"description": "The commands/steps listed on this page can be used to check networking related issues in your cluster.",
"source": "@site/versioned_docs/version-2.9/troubleshooting/other-troubleshooting-tips/networking.md",
"sourceDirName": "troubleshooting/other-troubleshooting-tips",
"slug": "/troubleshooting/other-troubleshooting-tips/networking",
"permalink": "/v2.9/troubleshooting/other-troubleshooting-tips/networking",
"draft": false,
"editUrl": "https://github.com/rancher/rancher-docs/edit/main/versioned_docs/version-2.9/troubleshooting/other-troubleshooting-tips/networking.md",
"tags": [],
"version": "2.9",
"lastUpdatedAt": 1716936476,
"formattedLastUpdatedAt": "May 28, 2024",
"frontMatter": {
"title": "Networking"
},
"sidebar": "tutorialSidebar",
"previous": {
"title": "Kubernetes Resources",
"permalink": "/v2.9/troubleshooting/other-troubleshooting-tips/kubernetes-resources"
},
"next": {
"title": "DNS",
"permalink": "/v2.9/troubleshooting/other-troubleshooting-tips/dns"
}
};
const assets = {};
const toc = [
{
value: 'Double check if all the required ports are opened in your (host) firewall',
id: 'double-check-if-all-the-required-ports-are-opened-in-your-host-firewall',
level: 3
},
{
value: 'Check if overlay network is functioning correctly',
id: 'check-if-overlay-network-is-functioning-correctly',
level: 3
},
{
value: 'Check if MTU is correctly configured on hosts and on peering/tunnel appliances/devices',
id: 'check-if-mtu-is-correctly-configured-on-hosts-and-on-peeringtunnel-appliancesdevices',
level: 3
},
{
value: 'Resolved issues',
id: 'resolved-issues',
level: 3
},
{
value: 'Overlay network broken when using Canal/Flannel due to missing node annotations',
id: 'overlay-network-broken-when-using-canalflannel-due-to-missing-node-annotations',
level: 4
}
];
const layoutProps = {
toc
};
const MDXLayout = "wrapper";
function MDXContent(_param) {
var { components } = _param, props = _object_without_properties(_param, [
"components"
]);
return /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)(MDXLayout, _object_spread_props(_object_spread({}, layoutProps, props), {
components: components,
mdxType: "MDXLayout"
}), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("head", null, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("link", {
rel: "canonical",
href: "https://ranchermanager.docs.rancher.com/troubleshooting/other-troubleshooting-tips/networking"
})), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", null, `The commands/steps listed on this page can be used to check networking related issues in your cluster.`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", null, `Make sure you configured the correct kubeconfig (for example, `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `export KUBECONFIG=$PWD/kube_config_cluster.yml`), ` for Rancher HA) or are using the embedded kubectl via the UI.`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("h3", {
"id": "double-check-if-all-the-required-ports-are-opened-in-your-host-firewall"
}, `Double check if all the required ports are opened in your (host) firewall`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", null, `Double check if all the `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("a", {
parentName: "p",
"href": "/v2.9/how-to-guides/new-user-guides/kubernetes-clusters-in-rancher-setup/node-requirements-for-rancher-managed-clusters#networking-requirements"
}, `required ports`), ` are opened in your (host) firewall. The overlay network uses UDP in comparison to all other required ports which are TCP.`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("h3", {
"id": "check-if-overlay-network-is-functioning-correctly"
}, `Check if overlay network is functioning correctly`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", null, `The pod can be scheduled to any of the hosts you used for your cluster, but that means that the NGINX ingress controller needs to be able to route the request from `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `NODE_1`), ` to `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `NODE_2`), `. This happens over the overlay network. If the overlay network is not functioning, you will experience intermittent TCP/HTTP connection failures due to the NGINX ingress controller not being able to route to the pod.`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", null, `To test the overlay network, you can launch the following `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `DaemonSet`), ` definition. This will run a `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `swiss-army-knife`), ` container on every host (image was developed by Rancher engineers and can be found here: `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("a", {
parentName: "p",
"href": "https://github.com/rancherlabs/swiss-army-knife"
}, `https://github.com/rancherlabs/swiss-army-knife`), `), which we will use to run a `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `ping`), ` test between containers on all hosts.`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("admonition", {
"type": "caution"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", {
parentName: "admonition"
}, `The `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `swiss-army-knife`), ` container does not support Windows nodes. It also `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("a", {
parentName: "p",
"href": "https://github.com/leodotcloud/swiss-army-knife/issues/18"
}, `does not support ARM nodes`), `, such as a Raspberry Pi. When the test encounters incompatible nodes, this is recorded in the pod logs as an error message, such as `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `exec user process caused: exec format error`), ` for ARM nodes, or `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `ImagePullBackOff (Back-off pulling image "rancherlabs/swiss-army-knife)`), ` for Windows nodes.`)), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("ol", null, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("li", {
parentName: "ol"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", {
parentName: "li"
}, `Save the following file as `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `overlaytest.yml`)), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("pre", {
parentName: "li"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("code", {
parentName: "pre"
}, `apiVersion: apps/v1
kind: DaemonSet
metadata:
name: overlaytest
spec:
selector:
matchLabels:
name: overlaytest
template:
metadata:
labels:
name: overlaytest
spec:
tolerations:
- operator: Exists
containers:
- image: rancherlabs/swiss-army-knife
imagePullPolicy: Always
name: overlaytest
command: ["sh", "-c", "tail -f /dev/null"]
terminationMessagePath: /dev/termination-log
`))), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("li", {
parentName: "ol"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", {
parentName: "li"
}, `Launch it using `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `kubectl create -f overlaytest.yml`))), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("li", {
parentName: "ol"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", {
parentName: "li"
}, `Wait until `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `kubectl rollout status ds/overlaytest -w`), ` returns: `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `daemon set "overlaytest" successfully rolled out`), `.`)), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("li", {
parentName: "ol"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", {
parentName: "li"
}, `Run the following script, from the same location. It will have each `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `overlaytest`), ` container on every host ping each other:`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("pre", {
parentName: "li"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("code", {
parentName: "pre"
}, `#!/bin/bash
echo "=> Start network overlay test"
kubectl get pods -l name=overlaytest -o jsonpath='{range .items[*]}{@.metadata.name}{" "}{@.spec.nodeName}{"\\n"}{end}' |
while read spod shost
do kubectl get pods -l name=overlaytest -o jsonpath='{range .items[*]}{@.status.podIP}{" "}{@.spec.nodeName}{"\\n"}{end}' |
while read tip thost
do kubectl --request-timeout='10s' exec $spod -c overlaytest -- /bin/sh -c "ping -c2 $tip > /dev/null 2>&1"
RC=$?
if [ $RC -ne 0 ]
then echo FAIL: $spod on $shost cannot reach pod IP $tip on $thost
else echo $shost can reach $thost
fi
done
done
echo "=> End network overlay test"
`))), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("li", {
parentName: "ol"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", {
parentName: "li"
}, `When this command has finished running, it will output the state of each route:`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("pre", {
parentName: "li"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("code", {
parentName: "pre"
}, `=> Start network overlay test
Error from server (NotFound): pods "wk2" not found
FAIL: overlaytest-5bglp on wk2 cannot reach pod IP 10.42.7.3 on wk2
Error from server (NotFound): pods "wk2" not found
FAIL: overlaytest-5bglp on wk2 cannot reach pod IP 10.42.0.5 on cp1
Error from server (NotFound): pods "wk2" not found
FAIL: overlaytest-5bglp on wk2 cannot reach pod IP 10.42.2.12 on wk1
command terminated with exit code 1
FAIL: overlaytest-v4qkl on cp1 cannot reach pod IP 10.42.7.3 on wk2
cp1 can reach cp1
cp1 can reach wk1
command terminated with exit code 1
FAIL: overlaytest-xpxwp on wk1 cannot reach pod IP 10.42.7.3 on wk2
wk1 can reach cp1
wk1 can reach wk1
=> End network overlay test
`)), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", {
parentName: "li"
}, `If you see error in the output, there is some issue with the route between the pods on the two hosts. In the above output the node `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `wk2`), ` has no connectivity over the overlay network. This could be because the `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("a", {
parentName: "p",
"href": "/v2.9/how-to-guides/new-user-guides/kubernetes-clusters-in-rancher-setup/node-requirements-for-rancher-managed-clusters#networking-requirements"
}, `required ports`), ` for overlay networking are not opened for `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `wk2`), `.`)), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("li", {
parentName: "ol"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", {
parentName: "li"
}, `You can now clean up the DaemonSet by running `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `kubectl delete ds/overlaytest`), `.`))), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("h3", {
"id": "check-if-mtu-is-correctly-configured-on-hosts-and-on-peeringtunnel-appliancesdevices"
}, `Check if MTU is correctly configured on hosts and on peering/tunnel appliances/devices`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", null, `When the MTU is incorrectly configured (either on hosts running Rancher, nodes in created/imported clusters or on appliances/devices in between), error messages will be logged in Rancher and in the agents, similar to:`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("ul", null, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("li", {
parentName: "ul"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "li"
}, `websocket: bad handshake`)), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("li", {
parentName: "ul"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "li"
}, `Failed to connect to proxy`)), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("li", {
parentName: "ul"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "li"
}, `read tcp: i/o timeout`))), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", null, `See `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("a", {
parentName: "p",
"href": "https://cloud.google.com/vpn/docs/concepts/mtu-considerations#gateway_mtu_vs_system_mtu"
}, `Google Cloud VPN: MTU Considerations`), ` for an example how to configure MTU correctly when using Google Cloud VPN between Rancher and cluster nodes.`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("h3", {
"id": "resolved-issues"
}, `Resolved issues`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("h4", {
"id": "overlay-network-broken-when-using-canalflannel-due-to-missing-node-annotations"
}, `Overlay network broken when using Canal/Flannel due to missing node annotations`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("table", null, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("thead", {
parentName: "table"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("tr", {
parentName: "thead"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("th", {
parentName: "tr",
"align": null
}), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("th", {
parentName: "tr",
"align": null
}))), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("tbody", {
parentName: "table"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("tr", {
parentName: "tbody"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("td", {
parentName: "tr",
"align": null
}, `GitHub issue`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("td", {
parentName: "tr",
"align": null
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("a", {
parentName: "td",
"href": "https://github.com/rancher/rancher/issues/13644"
}, `#13644`))), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("tr", {
parentName: "tbody"
}, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("td", {
parentName: "tr",
"align": null
}, `Resolved in`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("td", {
parentName: "tr",
"align": null
}, `v2.1.2`)))), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", null, `To check if your cluster is affected, the following command will list nodes that are broken (this command requires `, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("inlineCode", {
parentName: "p"
}, `jq`), ` to be installed):`), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("pre", null, /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("code", {
parentName: "pre"
}, `kubectl get nodes -o json | jq '.items[].metadata | select(.annotations["flannel.alpha.coreos.com/public-ip"] == null or .annotations["flannel.alpha.coreos.com/kube-subnet-manager"] == null or .annotations["flannel.alpha.coreos.com/backend-type"] == null or .annotations["flannel.alpha.coreos.com/backend-data"] == null) | .name'
`)), /*#__PURE__*/ (0,_mdx_js_react__WEBPACK_IMPORTED_MODULE_1__/* .mdx */ .kt)("p", null, `If there is no output, the cluster is not affected.`));
}
MDXContent.isMDXComponent = true;
/***/ })
}]);
Reference in New Issue View Git Blame Copy Permalink