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fix(NA): log rotation watchers usage (#60956) (#61024)

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* fix(NA): log rotation watchers usage

* docs(NA): add old value to the example

* chore(NA): change warning messages
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Tiago Costa 2020-03-24 12:58:07 +00:00 • committed by GitHub
parent 2eecaf4a8d
commit 192d348632
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4 changed files with 23 additions and 11 deletions
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4
docs/setup/settings.asciidoc
View file

@ -200,7 +200,7 @@ that feature would not take any effect.
`logging.rotate.everyBytes:`:: [experimental] *Default: 10485760* The maximum size of a log file (that is `not an exact` limit). After the
limit is reached, a new log file is generated. The default size limit is 10485760 (10 MB) and
this option should be in the range of 102400 (100KB) to 1073741824 (1GB).
this option should be in the range of 1048576 (1 MB) to 1073741824 (1 GB).
`logging.rotate.keepFiles:`:: [experimental] *Default: 7* The number of most recent rotated log files to keep
on disk. Older files are deleted during log rotation. The default value is 7. The `logging.rotate.keepFiles`
@ -210,7 +210,7 @@ option has to be in the range of 2 to 1024 files.
the `logging.rotate.usePolling` is enabled. That option has to be in the range of 5000 to 3600000 milliseconds.
`logging.rotate.usePolling:`:: [experimental] *Default: false* By default we try to understand the best way to monitoring
the log file. However, there is some systems where it could not be always accurate. In those cases, if needed,
the log file and warning about it. Please be aware there are some systems where watch api is not accurate. In those cases, in order to get the feature working,
the `polling` method could be used enabling that option.
`logging.silent:`:: *Default: false* Set the value of this setting to `true` to

4
src/legacy/server/config/schema.js
View file

@ -136,8 +136,8 @@ export default () =>
.keys({
enabled: Joi.boolean().default(false),
everyBytes: Joi.number()
// > 100KB
.greater(102399)
// > 1MB
.greater(1048576)
// < 1GB
.less(1073741825)
// 10MB

10
src/legacy/server/logging/rotate/log_rotator.test.ts
View file

@ -204,8 +204,8 @@ describe('LogRotator', () => {
expect(logRotator.running).toBe(true);
expect(logRotator.usePolling).toBe(false);
const usePolling = await logRotator._shouldUsePolling();
expect(usePolling).toBe(false);
const shouldUsePolling = await logRotator._shouldUsePolling();
expect(shouldUsePolling).toBe(false);
await logRotator.stop();
});
@ -231,7 +231,8 @@ describe('LogRotator', () => {
await logRotator.start();
expect(logRotator.running).toBe(true);
expect(logRotator.usePolling).toBe(true);
expect(logRotator.usePolling).toBe(false);
expect(logRotator.shouldUsePolling).toBe(true);
await logRotator.stop();
});
@ -257,7 +258,8 @@ describe('LogRotator', () => {
await logRotator.start();
expect(logRotator.running).toBe(true);
expect(logRotator.usePolling).toBe(true);
expect(logRotator.usePolling).toBe(false);
expect(logRotator.shouldUsePolling).toBe(true);
await logRotator.stop();
jest.useRealTimers();

16
src/legacy/server/logging/rotate/log_rotator.ts
View file

@ -50,6 +50,7 @@ export class LogRotator {
public usePolling: boolean;
public pollingInterval: number;
private stalkerUsePollingPolicyTestTimeout: NodeJS.Timeout | null;
public shouldUsePolling: boolean;
constructor(config: KibanaConfig, server: Server) {
this.config = config;
@ -64,6 +65,7 @@ export class LogRotator {
this.stalker = null;
this.usePolling = config.get('logging.rotate.usePolling');
this.pollingInterval = config.get('logging.rotate.pollingInterval');
this.shouldUsePolling = false;
this.stalkerUsePollingPolicyTestTimeout = null;
}
@ -150,12 +152,20 @@ export class LogRotator {
}
async _startLogFileSizeMonitor() {
this.usePolling = await this._shouldUsePolling();
this.usePolling = this.config.get('logging.rotate.usePolling');
this.shouldUsePolling = await this._shouldUsePolling();
if (this.usePolling && this.usePolling !== this.config.get('logging.rotate.usePolling')) {
if (this.usePolling && !this.shouldUsePolling) {
this.log(
['warning', 'logging:rotate'],
'The current environment does not support `fs.watch`. Falling back to polling using `fs.watchFile`'
'Looks like your current environment support a faster algorithm then polling. You can try to disable `usePolling`'
);
}
if (!this.usePolling && this.shouldUsePolling) {
this.log(
['error', 'logging:rotate'],
'Looks like within your current environment you need to use polling in order to enable log rotator. Please enable `usePolling`'
);
}