X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=sliver_vs.py;h=4245e531f116993d801d4e0b8ca8509a607c9ac4;hb=db4118a58cef01c0ad8ac5c76c752c6051e1575b;hp=85cbac25a7019100c1eef3e52b830827e24206b3;hpb=8a73c41fa38f330fd125d85d693d1390ea2477a4;p=nodemanager.git diff --git a/sliver_vs.py b/sliver_vs.py index 85cbac2..4245e53 100644 --- a/sliver_vs.py +++ b/sliver_vs.py @@ -23,15 +23,14 @@ import errno import traceback import os, os.path import time +from threading import BoundedSemaphore +# the util-vserver-pl module import vserver import accounts import logger import tools -from threading import BoundedSemaphore - -globalsem = BoundedSemaphore() # special constant that tells vserver to keep its existing settings KEEP_LIMIT = vserver.VC_LIM_KEEP @@ -50,14 +49,14 @@ class Sliver_VS(accounts.Account, vserver.VServer): SHELL = '/bin/vsh' TYPE = 'sliver.VServer' - _init_disk_info_sem = globalsem + _init_disk_info_sem = BoundedSemaphore() def __init__(self, rec): name=rec['name'] logger.verbose ('sliver_vs: %s init'%name) try: logger.log("sliver_vs: %s: first chance..."%name) - vserver.VServer.__init__(self, name,logfile='/var/log/nm') + vserver.VServer.__init__(self, name,logfile='/var/log/nodemanager') except Exception, err: if not isinstance(err, vserver.NoSuchVServer): # Probably a bad vserver or vserver configuration file @@ -66,14 +65,13 @@ class Sliver_VS(accounts.Account, vserver.VServer): self.destroy(name) self.create(name, rec['vref']) logger.log("sliver_vs: %s: second chance..."%name) - vserver.VServer.__init__(self, name,logfile='/var/log/nm') + vserver.VServer.__init__(self, name,logfile='/var/log/nodemanager') self.keys = '' self.rspec = {} - self.initscript = '' self.slice_id = rec['slice_id'] self.disk_usage_initialized = False - self.initscriptchanged = False + self.initscript = '' self.enabled = True self.configure(rec) @@ -82,11 +80,15 @@ class Sliver_VS(accounts.Account, vserver.VServer): logger.verbose('sliver_vs: %s: create'%name) if vref is None: logger.log("sliver_vs: %s: ERROR - no vref attached, this is unexpected"%(name)) - return - # used to look in /etc/planetlab/family, + # added by caglar + # band-aid for short period as old API doesn't have GetSliceFamily function + #return + vref = "planetlab-f8-i386" + + # used to look in /etc/planetlab/family, # now relies on the 'GetSliceFamily' extra attribute in GetSlivers() # which for legacy is still exposed here as the 'vref' key - + # check the template exists -- there's probably a better way.. if not os.path.isdir ("/vservers/.vref/%s"%vref): logger.log ("sliver_vs: %s: ERROR Could not create sliver - vreference image %s not found"%(name,vref)) @@ -99,27 +101,27 @@ class Sliver_VS(accounts.Account, vserver.VServer): # and that's not quite right except: arch='i386' - + def personality (arch): personality="linux32" if arch.find("64")>=0: personality="linux64" return personality - # temporary : run vuseradd verbosely - mostly a check for log_call to work properly, - # since the issue with the kernel seems to have been spotted -# logger.log_call(['/usr/sbin/vuseradd', '-t', vref, name, ], timeout=10*60) +# logger.log_call(['/usr/sbin/vuseradd', '-t', vref, name, ], timeout=15*60) logger.log_call(['/bin/bash','-x','/usr/sbin/vuseradd', '-t', vref, name, ], timeout=15*60) # export slicename to the slice in /etc/slicename file('/vservers/%s/etc/slicename' % name, 'w').write(name) file('/vservers/%s/etc/slicefamily' % name, 'w').write(vref) # 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)) + file('/etc/vservers/%s/personality' % name, 'w').write(personality(arch)+"\n") logger.log('sliver_vs: %s: set personality to %s'%(name,personality(arch))) @staticmethod - def destroy(name): logger.log_call(['/usr/sbin/vuserdel', name, ]) + def destroy(name): +# logger.log_call(['/usr/sbin/vuserdel', name, ]) + logger.log_call(['/bin/bash','-x','/usr/sbin/vuserdel', name, ]) def configure(self, rec): new_rspec = rec['_rspec'] @@ -130,41 +132,68 @@ class Sliver_VS(accounts.Account, vserver.VServer): new_initscript = rec['initscript'] if new_initscript != self.initscript: self.initscript = new_initscript - self.initscriptchanged = True + # 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) + + # 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)) + else: + logger.log("vsliver_vs: %s: Removed obsolete initscript %s"%(self.name,sliver_initscript)) + def start(self, delay=0): - if self.rspec['enabled'] > 0: + 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, - # so just close the nonstandard fds and fork once to avoid creating zombies + # 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: - if self.initscriptchanged: - logger.log('sliver_vs: %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, self.initscript) - os.close(fd) - try: - self.chroot_call(install_initscript) - except: logger.log_exc("sliver_vs: start",name=self.name) + # 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: + else: os.waitpid(child_pid, 0) - self.initscriptchanged = False - else: logger.log('sliver_vs: not starting, is not enabled', name=self.name) def stop(self): logger.log('sliver_vs: %s: stopping' % self.name) vserver.VServer.stop(self) - def is_running(self): + def is_running(self): return vserver.VServer.is_running(self) def set_resources(self,setup=False): @@ -175,6 +204,7 @@ class Sliver_VS(accounts.Account, vserver.VServer): self.vm_running = False Sliver_VS._init_disk_info_sem.acquire() logger.log('sliver_vs: %s: computing disk usage: beginning' % self.name) + # init_disk_info is inherited from VServer try: self.init_disk_info() finally: Sliver_VS._init_disk_info_sem.release() logger.log('sliver_vs: %s: computing disk usage: ended' % self.name) @@ -238,19 +268,25 @@ class Sliver_VS(accounts.Account, vserver.VServer): (self.name, self.rspec['ip_addresses'])) self.set_ipaddresses_config(self.rspec['ip_addresses']) - if self.is_running(): - logger.log("sliver_vs: %s: Setting name to %s" % (self.name, self.slice_id)) - self.setname(self.slice_id) - ### Sapan's change needs more work - # raise IOException, file does not get created - # might be that /etc/vservers is not available here, are we in the chroot ? - #logger.log("sliver_vs: %s: Storing slice id of %s for PlanetFlow" % (self.name, self.slice_id)) - #file('/etc/vservers/%s/slice_id' % self.name, 'w').write(self.slice_id) + #logger.log("sliver_vs: %s: Setting name to %s" % (self.name, self.slice_id)) + #self.setname(self.slice_id) + #logger.log("sliver_vs: %s: Storing slice id of %s for PlanetFlow" % (self.name, self.slice_id)) + 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\n"%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('sliver_vs: %s: limits have changed --- restarting' % self.name)