Fix Unable to connect to xend: Connection refused. ExpatError: no element found
- January 23rd, 2012
- By كارما
- Write comment
The error message
Unable to connect to xend: Connection refused. Is xend running?
can be caused by a number of issues, but if your xend.log contains lines regarding syntax, such as:
[2012-01-23 11:33:37 5670] INFO (SrvDaemon:227) Xend stopped due to signal 15.
[2012-01-23 11:33:38 6427] INFO (SrvDaemon:332) Xend Daemon started
[2012-01-23 11:33:38 6427] INFO (SrvDaemon:336) Xend changeset: unavailable.
[2012-01-23 11:33:38 6427] ERROR (SrvDaemon:349) Exception starting xend (no element found: line 1, column 0)
Traceback (most recent call last):
File "/usr/lib64/python2.6/site-packages/xen/xend/server/SrvDaemon.py", line 341, in run
servers = SrvServer.create()
File "/usr/lib64/python2.6/site-packages/xen/xend/server/SrvServer.py", line 251, in create
root.putChild('xend', SrvRoot())
File "/usr/lib64/python2.6/site-packages/xen/xend/server/SrvRoot.py", line 40, in __init__
self.get(name)
File "/usr/lib64/python2.6/site-packages/xen/web/SrvDir.py", line 84, in get
val = val.getobj()
File "/usr/lib64/python2.6/site-packages/xen/web/SrvDir.py", line 52, in getobj
self.obj = klassobj()
File "/usr/lib64/python2.6/site-packages/xen/xend/server/SrvNode.py", line 30, in __init__
self.xn = XendNode.instance()
File "/usr/lib64/python2.6/site-packages/xen/xend/XendNode.py", line 1140, in instance
inst = XendNode()
File "/usr/lib64/python2.6/site-packages/xen/xend/XendNode.py", line 158, in __init__
self._init_PPCIs()
File "/usr/lib64/python2.6/site-packages/xen/xend/XendNode.py", line 270, in _init_PPCIs
saved_ppcis = self.state_store.load_state('ppci')
File "/usr/lib64/python2.6/site-packages/xen/xend/XendStateStore.py", line 104, in load_state
dom = minidom.parse(xml_path)
File "/usr/lib64/python2.6/site-packages/_xmlplus/dom/minidom.py", line 1915, in parse
return expatbuilder.parse(file)
File "/usr/lib64/python2.6/site-packages/_xmlplus/dom/expatbuilder.py", line 926, in parse
result = builder.parseFile(fp)
File "/usr/lib64/python2.6/site-packages/_xmlplus/dom/expatbuilder.py", line 211, in parseFile
parser.Parse("", True)
ExpatError: no element found: line 1, column 0
there is a good chance your xend database (stored, intuitively, in python syntax…) is suffering from corruption.
It is safe to remove the database but best practice to back it up so rename the directory:
# mv /var/lib/xend /var/lib/xend.bak # /etc/init.d/xend restart
