Red Hat LINUX VIRTUAL SERVER 5.1 - ADMINISTRATION Guia de Instalação descarregar pdf (Página 134)

Note

This line is commented out by default to prevent libvirt from producing excessive

log messages. After diagnosing the problem, it is recommended to comment this line

again in the /etc/l i bvi rt/l i bvi rtd . co nf file.

Restart lib virt to determine if this has solved the problem.

If l i bvi rtd still does not start successfully, an error similar to the following will be shown

in the /var/l o g /messag es file:

Feb 6 17:22:09 bart libvirtd: 17576: info : libvirt version:

0.9.9

Feb 6 17:22:09 bart libvirtd: 17576: error :

virNetTLSContextCheckCertFile:92: Cannot read CA certificate

'/etc/pki/CA/cacert.pem': No such file or directory

Feb 6 17:22:09 bart /etc/init.d/libvirtd[17573]: start-stop-

daemon: failed to start `/usr/sbin/libvirtd'

Feb 6 17:22:09 bart /etc/init.d/libvirtd[17565]: ERROR: libvirtd

failed to start

The lib virt d man page shows that the missing cacert. pem file is used as TLS authority

when libvirt is run in Li sten fo r T C P /IP co nnecti ons mode. This means the --

listen parameter is being passed.

So lu t io n

Configure the libvirt daemon's settings with one of the following methods:

Install a CA certificate.

Note

For more information on CA certificates and configuring system authentication,

refer to the Configuring Authentication chapter in the Red Hat Enterprise Linux 6

Deployment Guide.

Do not use TLS; use bare TCP instead. In /etc/l i bvi rt/l i bvi rtd . co nf set

l i sten_tl s = 0 and l i sten_tcp = 1. The default values are l i sten_tl s = 1

and l i sten_tcp = 0 .

Do not pass the --listen parameter. In /etc/sysco nfi g /l i bvi rtd . co nf change

the LIBVIRTD_ARGS variable.

B.2. T he URI failed t o connect t o t he hypervisor

Several different errors can occur when connecting to the server (for example, when running vi rsh).

B.2.1. Cannot read CA cert ificat e

Symp t o m

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Red Hat LINUX VIRTUAL SERVER 5.1 - ADMINISTRATION Guia de Instalação Página 134