Manual:$wgEnableCanonicalServerLink

From Linux Web Expert

<translate> Output</translate>: $wgEnableCanonicalServerLink
Output a <link rel="canonical"> tag on every page indicating the canonical server which should be used, i.e. $wgServer or $wgCanonicalServer .
<translate> Introduced in version:</translate>1.21.0 (Gerrit change 41562; git #e0a78d0a)
<translate> Removed in version:</translate><translate> still in use</translate>
<translate> Allowed values:</translate>(boolean)
<translate> Default value:</translate>false

Details

If enabled with "true", output a <link rel="canonical"> tag on every page, indicating the canonical URL of the page. The URL includes the canonical server which should be used, i.e. $wgServer or $wgCanonicalServer .