"""
import errno
+import traceback
import os, os.path
+import sys
import time
+
import vserver
import accounts
import logger
import tools
from threading import BoundedSemaphore
+import subprocess
globalsem = BoundedSemaphore()
self.slice_id = rec['slice_id']
self.disk_usage_initialized = False
self.initscriptchanged = False
+ self.enabled = True
self.configure(rec)
@staticmethod
# default
default=file("/etc/planetlab/slicefamily").read().strip()
(pldistro,fcdistro,arch) = default.split("-")
+
+ known_archs = [ 'i386', 'x86_64' ]
+ known_fcdistros = [ 'centos5', 'f8', 'f9', 'f10', 'f11', 'f12' ]
# from the slice attribute: cut dashes and try to figure the meaning
slice_wishes = vref.split("-")
for wish in slice_wishes:
- if wish == "i386" or wish == "x86_64":
+ if wish in known_archs:
arch=wish
- elif wish == "f8" or wish == "centos5" :
+ elif wish in known_fcdistros:
fcdistro=wish
else:
pldistro=wish
# rejoin the parts
refname="-".join( (pldistro,fcdistro,arch) )
- # check the templates exists -- there's probably a better way..
+ # check the template exists -- there's probably a better way..
if not os.path.isdir ("/vservers/.vref/%s"%refname):
- logger.verbose("%s (%s) : vref %s not found, using default %s"%(
+ logger.log("%s (%s) : vref %s not found, using default %s"%(
name,vref,refname,default))
refname=default
+ # reset so arch is right
+ (pldistro,fcdistro,arch) = default.split("-")
# could check again, but as we have /etc/slicefamily
# there's probably no /vservers/.vref/default
except IOError:
# have not found slicefamily
- logger.verbose("%s (%s): legacy node - using fallback vrefname 'default'"%(name,vref))
- # for legacy nodes
+ logger.log("%s (%s): legacy node - using fallback vrefname 'default'"%(name,vref))
+ # for legacy nodes
refname="default"
+ arch="i386"
except:
- import traceback
- logger.log("%s (%s) : unexpected error follows - using 'default'"%(
- name,vref))
+ logger.log("%s (%s) : unexpected error follows - using 'default'"%(name,vref))
logger.log(traceback.format_exc())
refname="default"
+ arch="i386"
+ def personality (arch):
+ personality="linux32"
+ if arch.find("64")>=0:
+ personality="linux64"
+ return personality
+
logger.log_call('/usr/sbin/vuseradd', '-t', refname, name)
- open('/vservers/%s/etc/slicename' % name, 'w').write(name)
+ # export slicename to the slice in /etc/slicename
+ file('/vservers/%s/etc/slicename' % name, 'w').write(name)
+ # set personality: only if needed (if arch's differ)
+ if tools.root_context_arch() != arch:
+ file('/etc/vservers/%s/personality' % name, 'w').write(personality(arch))
+ logger.log('%s: set personality to %s'%(name,personality(arch)))
@staticmethod
def destroy(name): logger.log_call('/usr/sbin/vuserdel', name)
def configure(self, rec):
+ # in case we update nodemanager..
+ self.install_and_enable_vinit()
+
new_rspec = rec['_rspec']
if new_rspec != self.rspec:
self.rspec = new_rspec
new_initscript = rec['initscript']
if new_initscript != self.initscript:
self.initscript = new_initscript
- logger.log('%s: installing initscript' % self.name)
- def install_initscript():
- flags = os.O_WRONLY | os.O_CREAT | os.O_TRUNC
- fd = os.open('/etc/rc.vinit', flags, 0755)
- os.write(fd, new_initscript)
- os.close(fd)
- try:
- self.chroot_call(install_initscript)
- self.initscriptchanged = True
- except: logger.log_exc(self.name)
+ # not used anymore, we always check against the installed script
+ #self.initscriptchanged = True
+ self.refresh_slice_vinit()
accounts.Account.configure(self, rec) # install ssh keys
+ # unconditionnally install and enable the generic vinit script
+ # mimicking chkconfig for enabling the generic vinit script
+ # this is hardwired for runlevel 3
+ def install_and_enable_vinit (self):
+ vinit_source="/usr/share/NodeManager/sliver-initscripts/vinit"
+ vinit_script="/vservers/%s/etc/rc.d/init.d/vinit"%self.name
+ rc3_link="/vservers/%s/etc/rc.d/rc3.d/S99vinit"%self.name
+ rc3_target="../init.d/vinit"
+ # install in sliver
+ body=file(vinit_source).read()
+ if tools.replace_file_with_string(vinit_script,body,chmod=0755):
+ logger.log("vsliver_vs: %s: installed generic vinit rc script"%self.name)
+ # create symlink for runlevel 3
+ if not os.path.islink(rc3_link):
+ try:
+ logger.log("vsliver_vs: %s: creating runlevel3 symlink %s"%(self.name,rc3_link))
+ os.symlink(rc3_target,rc3_link)
+ except:
+ logger.log_exc("vsliver_vs: %s: failed to create runlevel3 symlink %s"%rc3_link)
+
+ def rerun_slice_vinit(self):
+ command = "/usr/sbin/vserver %s exec /etc/rc.d/init.d/vinit restart" % (self.name)
+ logger.log("vsliver_vs: %s: Rerunning slice initscript: %s" % (self.name, command))
+ subprocess.call(command + "&", stdin=open('/dev/null', 'r'), stdout=open('/dev/null', 'w'), stderr=subprocess.STDOUT, shell=True)
+
+ # this one checks for the existence of the slice initscript
+ # install or remove the slice inistscript, as instructed by the initscript tag
+ def refresh_slice_vinit(self):
+ body=self.initscript
+ sliver_initscript="/vservers/%s/etc/rc.d/init.d/vinit.slice"%self.name
+ if tools.replace_file_with_string(sliver_initscript,body,remove_if_empty=True,chmod=0755):
+ if body:
+ logger.log("vsliver_vs: %s: Installed new initscript in %s"%(self.name,sliver_initscript))
+ if self.is_running():
+ # Only need to rerun the initscript if the vserver is
+ # already running. If the vserver isn't running, then the
+ # initscript will automatically be started by
+ # /etc/rc.d/vinit when the vserver is started.
+ self.rerun_slice_vinit()
+ else:
+ logger.log("vsliver_vs: %s: Removed obsolete initscript %s"%(self.name,sliver_initscript))
+
def start(self, delay=0):
- if self.rspec['enabled'] > 0:
- logger.log('%s: starting in %d seconds' % (self.name, delay))
+ if self.rspec['enabled'] <= 0:
+ logger.log('sliver_vs: not starting %s, is not enabled'%self.name)
+ else:
+ logger.log('sliver_vs: %s: starting in %d seconds' % (self.name, delay))
time.sleep(delay)
- # VServer.start calls fork() internally
- vserver.VServer.start(self)
- # Watch for 5 mins to see if slice is running before setting the name
- # It would make sense to do this as part of start in VServer, but the name
- # comes from NM. Also, the name would only change in NM. Name can only be
- # set from root context, so overloading chcontext wont work; chcontext, setname
- # will fail, and in the converse the context isn't setup in the kernel.
- for i in range(0,60):
- time.sleep(5)
- if vserver.VServer.is_running(self):
- # Set the vciVHI_CONTEXT to slice_id for
- # fprobe-ulog to mark packets with.
- logger.log("%s: Setting name to %s" % (self.name, self.slice_id),2)
- self.setname(self.slice_id)
- break
-
- else: logger.log('%s: not starting, is not enabled' % self.name)
- self.initscriptchanged = False
+ # the generic /etc/init.d/vinit script is permanently refreshed, and enabled
+ self.install_and_enable_vinit()
+ # if a change has occured in the slice initscript, reflect this in /etc/init.d/vinit.slice
+ self.refresh_slice_vinit()
+ child_pid = os.fork()
+ if child_pid == 0:
+ # VServer.start calls fork() internally,
+ # so just close the nonstandard fds and fork once to avoid creating zombies
+ tools.close_nonstandard_fds()
+ vserver.VServer.start(self)
+ os._exit(0)
+ else:
+ os.waitpid(child_pid, 0)
def stop(self):
logger.log('%s: stopping' % self.name)
vserver.VServer.stop(self)
+ def is_running(self):
+ return vserver.VServer.is_running(self)
+
def set_resources(self):
disk_max = self.rspec['disk_max']
logger.log('%s: setting max disk usage to %d KiB' % (self.name, disk_max))
try: # if the sliver is over quota, .set_disk_limit will throw an exception
if not self.disk_usage_initialized:
self.vm_running = False
- logger.log('%s: computing disk usage: beginning' % self.name)
Sliver_VS._init_disk_info_sem.acquire()
+ logger.log('%s: computing disk usage: beginning' % self.name)
try: self.init_disk_info()
finally: Sliver_VS._init_disk_info_sem.release()
logger.log('%s: computing disk usage: ended' % self.name)
cpu_pct = self.rspec['cpu_pct']
cpu_share = self.rspec['cpu_share']
+ count = 1
+ for key in self.rspec.keys():
+ if key.find('sysctl.') == 0:
+ sysctl=key.split('.')
+ try:
+ # /etc/vservers/<guest>/sysctl/<id>/
+ dirname = "/etc/vservers/%s/sysctl/%s" % (self.name, count)
+ try:
+ os.makedirs(dirname, 0755)
+ except:
+ pass
+ setting = open("%s/setting" % dirname, "w")
+ setting.write("%s\n" % key.lstrip("sysctl."))
+ setting.close()
+ value = open("%s/value" % dirname, "w")
+ value.write("%s\n" % self.rspec[key])
+ value.close()
+ count += 1
+
+ logger.log("sliver_vs: %s: writing %s=%s"%(self.name,key,self.rspec[key]))
+ except IOError, e:
+ logger.log("sliver_vs: %s: could not set %s=%s"%(self.name,key,self.rspec[key]))
+ logger.log("sliver_vs: %s: error = %s"%(self.name,e))
+
+
if self.rspec['enabled'] > 0:
if cpu_pct > 0:
logger.log('%s: setting cpu reservation to %d%%' % (self.name, cpu_pct))
(self.name, self.rspec['ip_addresses']))
self.set_ipaddresses_config(self.rspec['ip_addresses'])
+ try:
+ vserver_config_path = '/etc/vservers/%s'%self.name
+ if not os.path.exists (vserver_config_path):
+ os.makedirs (vserver_config_path)
+ file('%s/slice_id'%vserver_config_path, 'w').write("%d"%self.slice_id)
+ logger.log("sliver_vs: Recorded slice id %d for slice %s"%(self.slice_id,self.name))
+ except IOError,e:
+ logger.log("sliver_vs: Could not record slice_id for slice %s. Error: %s"%(self.name,str(e)))
+ except Exception,e:
+ logger.log_exc("sliver_vs: Error recording slice id: %s"%str(e),name=self.name)
+
+ if self.enabled == False:
+ self.enabled = True
+ self.start()
+
if False: # Does not work properly yet.
if self.have_limits_changed():
logger.log('%s: limits have changed --- restarting' % self.name)
else: # tell vsh to disable remote login by setting CPULIMIT to 0
logger.log('%s: disabling remote login' % self.name)
self.set_sched_config(0, 0)
+ self.enabled = False
self.stop()
git://git.onelab.eu / nodemanager.git / blobdiff