Akonadi（数据存储）

介绍

在 KDE 软件集 4.4 中， 通讯录（KAddressBook） 成为首个使用 Akonadi 的应用程序。早期的移植阶段将不可避免的存在各种小问题，故障解决页面将有助于解决它们。要简单的了解Akonadi的用途，可以浏览Akonadi 的术语。那里同时提供指向进一步阅读的有用链接。一旦解决了这些不可避免的早期问题， Akonadi 为众多程序提供强大的功能。

At the time of writing, the following applications are enabled to use the Akonadi framework to centrally store and access user data. Follow through to each application's page to learn more.

KMail
	Mail Client Uses Akonadi to store emails
KAddressBook
	Contact Manager Uses Akonadi to store contact information
KOrganizer
	Personal Organizer Uses Akonadi to store calendars, events, journals, etc.
KJots
	Note Taking Application Uses Akonadi to store notes

In addition to this, plasma widgets like the Digital Clock widget, the Notes widget also use Akonadi to store and retrieve events and notes.

Controlling the Akonadi server

The Akonadi control module in System Settings provides an easy means to starting, stopping, restarting and querying the status of the Akonadi server. You may also accomplish this from the commandline using the command akonadictl.

To start the Akonadi server,

akonadictl start

To stop the Akonadi server,

akonadictl stop

To restart a running Akonadi server,

akonadictl restart

To query the status of the Akonadi server,

akonadictl status

Disabling the Akonadi subsystem

Warning

Disabling the Akonadi subsystem causes all Akonadi-enabled applications to not have access to the user's data. This means you will not be able to use any of the above applications while Akonadi is turned off. If you understand this and still wish to disable the Akonadi subsystem, read on.

The Akonadi server is launched automatically at login whenever any Akonadi-enabled application requests access to it.

To disable the Akonadi subsystem, first, shut down the running Akonadi server from the control module or the command line:

akonadictl stop

Now, edit the file ~/.config/akonadi/akonadiserverrc and change StartServer from true to false:

StartServer=false

The Akonadi server should no longer launch automatically on login.

Note

The Akonadi server will still be started by any Akonadi-enabled application. Ensure that no akonadi-enabled application is launched at login or thereafter. Remember to check Plasma widgets as well — the Digital Clock widget in the default panel, for instance uses Akonadi to (optionally) display Calendar events and this is enabled in its settings by default.

Frequently Asked Questions

Refer to the Troubleshooting page for resolving glitches during migration. Akonadi's Glossary entry has a brief description of its purpose and other useful links. This page explains how Akonadi and KAddressBook work together.

If you are experiencing 100% CPU usage by the virtuoso-t process when using Akonadi and related applications, try this proposed workaround while it is being investigated: In KRunner's configuration page, disable the Nepomuk search plugin and the Contact plugin. Then, log out and back in. For further information and inputs, report back here or on the Forum or on the IRC channel #kontact.