<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
text-align:justify;
text-justify:inter-ideograph;
font-size:10.5pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";}
/* Page Definitions */
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 90.0pt 72.0pt 90.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link=blue vlink=purple style='text-justify-trim:punctuation'><div class=WordSection1><p class=MsoNormal><span lang=EN-US>I debugged vdsm with PyCharm, And I logged on my Centos 7.2 with root, and get an error as follows:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Problem:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Traceback (most recent call last):<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> File "/usr/share/vdsm/vdsm", line 149, in run<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> serve_clients(log)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> File "/usr/share/vdsm/vdsm", line 104, in serve_clients<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> cif = clientIF.getInstance(irs, log, scheduler)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> File "/usr/share/vdsm/clientIF.py", line 204, in getInstance<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> cls._instance = clientIF(irs, log, scheduler)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> File "/usr/share/vdsm/clientIF.py", line 106, in __init__<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> secret.clear()<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> File "/usr/lib/python2.7/site-packages/vdsm/virt/secret.py", line 92, in clear<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> con = libvirtconnection.get()<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> File "/usr/lib/python2.7/site-packages/vdsm/libvirtconnection.py", line 163, in get<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> password)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> File "/usr/lib/python2.7/site-packages/vdsm/libvirtconnection.py", line 99, in open_connection<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> return utils.retry(libvirtOpen, timeout=10, sleep=0.2)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> File "/usr/lib/python2.7/site-packages/vdsm/utils.py", line 546, in retry<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> return func()<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> File "/usr/lib64/python2.7/site-packages/libvirt.py", line 105, in openAuth<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> if ret is None:raise libvirtError('virConnectOpenAuth() failed')<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>libvirtError: Failed to connect socket to '/var/run/libvirt/libvirt-sock': Permission denied<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Investitate:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>According to the traceback above, the code in libvirt.py as below, and os.geteuid() get ‘0’ which shows the current user is root;<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>def openAuth(uri, auth, flags=0):<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> #print os.geteuid()<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> ret = libvirtmod.virConnectOpenAuth(uri, auth, flags)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> if ret is None:raise libvirtError('virConnectOpenAuth() failed')<o:p></o:p></span></p><p class=MsoNormal style='text-indent:21.0pt'><span lang=EN-US>return virConnect(_obj=ret)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>[root@server117 libvirt]# ll /var/run/libvirt/libvirt-sock<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>srwxrwx---. 1 root qemu 0 Jul 19 23:43 /var/run/libvirt/libvirt-sock<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>According that, root should not get an Permission denied error ? But why?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>And I setenforce=0 , and still show Perssion denied error.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>What’s the reason? And how to solve it?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Thank you.<o:p></o:p></span></p></div></body></html>