X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=sliver_vs.py;h=2febb374a17aa2c435078d7525768a1453555b7d;hb=da256268978e70f27e39f26012abd615e26a99c4;hp=ed81f9472df8da9eec66c994d9ac43fdb0ea783e;hpb=25f0e80cb3dfc0914a143aca030bd24fea7b619f;p=nodemanager.git diff --git a/sliver_vs.py b/sliver_vs.py index ed81f94..2febb37 100644 --- a/sliver_vs.py +++ b/sliver_vs.py @@ -1,5 +1,4 @@ -# $Id$ -# $URL$ +# """VServer slivers. @@ -22,8 +21,10 @@ don't have to guess if there is a running process or not. import errno import traceback import os, os.path +import sys import time from threading import BoundedSemaphore +import subprocess # the util-vserver-pl module import vserver @@ -63,10 +64,9 @@ class Sliver_VS(accounts.Account, vserver.VServer): logger.log_exc("sliver_vs:__init__ (first chance) %s",name=name) logger.log('sliver_vs: %s: recreating bad vserver' % name) self.destroy(name) - self.create(name, rec['vref']) + self.create(name, rec) logger.log("sliver_vs: %s: second chance..."%name) vserver.VServer.__init__(self, name,logfile='/var/log/nodemanager') - self.keys = '' self.rspec = {} self.slice_id = rec['slice_id'] @@ -76,13 +76,15 @@ class Sliver_VS(accounts.Account, vserver.VServer): self.configure(rec) @staticmethod - def create(name, vref = None): + def create(name, rec = None): logger.verbose('sliver_vs: %s: create'%name) + vref = rec['vref'] if vref is None: logger.log("sliver_vs: %s: ERROR - no vref attached, this is unexpected"%(name)) + # added by caglar # band-aid for short period as old API doesn't have GetSliceFamily function - vref = "planetlab-f8-i386" #return + vref = "planetlab-f8-i386" # used to look in /etc/planetlab/family, # now relies on the 'GetSliceFamily' extra attribute in GetSlivers() @@ -107,8 +109,18 @@ class Sliver_VS(accounts.Account, vserver.VServer): personality="linux64" return personality + command=[] + # be verbose + command += ['/bin/bash','-x',] + command += ['/usr/sbin/vuseradd', ] + if 'attributes' in rec and 'isolate_loopback' in rec['attributes'] and rec['attributes']['isolate_loopback'] == '1': + command += [ "-i",] + # the vsliver imge to use + command += [ '-t', vref, ] + # slice name + command += [ name, ] # 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) + logger.log_call(command, 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) @@ -123,6 +135,9 @@ class Sliver_VS(accounts.Account, vserver.VServer): logger.log_call(['/bin/bash','-x','/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 @@ -146,8 +161,8 @@ class Sliver_VS(accounts.Account, vserver.VServer): 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): + code=file(vinit_source).read() + if tools.replace_file_with_string(vinit_script,code,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): @@ -157,17 +172,48 @@ class Sliver_VS(accounts.Account, vserver.VServer): 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 + code=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: + if tools.replace_file_with_string(sliver_initscript,code,remove_if_empty=True,chmod=0755): + if code: 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)) + # bind mount root side dir to sliver side + # needs to be done before sliver starts + def expose_ssh_dir (self): + try: + root_ssh="/home/%s/.ssh"%self.name + sliver_ssh="/vservers/%s/home/%s/.ssh"%(self.name,self.name) + # any of both might not exist yet + for path in [root_ssh,sliver_ssh]: + if not os.path.exists (path): + os.mkdir(path) + if not os.path.isdir (path): + raise Exception + mounts=file('/proc/mounts').read() + if mounts.find(sliver_ssh)<0: + # xxx perform mount + subprocess.call("mount --bind -o ro %s %s"%(root_ssh,sliver_ssh),shell=True) + logger.log("expose_ssh_dir: %s mounted into slice %s"%(root_ssh,self.name)) + except: + logger.log_exc("expose_ssh_dir with slice %s failed"%self.name) + def start(self, delay=0): if self.rspec['enabled'] <= 0: logger.log('sliver_vs: not starting %s, is not enabled'%self.name) @@ -176,6 +222,9 @@ class Sliver_VS(accounts.Account, vserver.VServer): time.sleep(delay) # the generic /etc/init.d/vinit script is permanently refreshed, and enabled self.install_and_enable_vinit() + # expose .ssh for omf_friendly slivers + if 'omf_control' in self.rspec['tags']: + self.expose_ssh_dir() # 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() @@ -195,7 +244,7 @@ class Sliver_VS(accounts.Account, vserver.VServer): def is_running(self): return vserver.VServer.is_running(self) - def set_resources(self,setup=False): + def set_resources(self): disk_max = self.rspec['disk_max'] logger.log('sliver_vs: %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 @@ -232,21 +281,29 @@ class Sliver_VS(accounts.Account, vserver.VServer): cpu_pct = self.rspec['cpu_pct'] cpu_share = self.rspec['cpu_share'] - if setup: - for key in self.rspec.keys(): - if key.find('sysctl.') == 0: - sysctl=key.split('.') + count = 1 + for key in self.rspec.keys(): + if key.find('sysctl.') == 0: + sysctl=key.split('.') + try: + # /etc/vservers//sysctl// + dirname = "/etc/vservers/%s/sysctl/%s" % (self.name, count) try: - path="/proc/sys/%s" % ("/".join(sysctl[1:])) - logger.log("sliver_vs: %s: opening %s"%(self.name,path)) - flags = os.O_WRONLY - fd = os.open(path, flags) - logger.log("sliver_vs: %s: writing %s=%s"%(self.name,key,self.rspec[key])) - os.write(fd,self.rspec[key]) - os.close(fd) - 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)) + 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: @@ -265,7 +322,10 @@ class Sliver_VS(accounts.Account, vserver.VServer): if self.rspec['ip_addresses'] != '0.0.0.0': logger.log('sliver_vs: %s: setting IP address(es) to %s' % \ (self.name, self.rspec['ip_addresses'])) - self.set_ipaddresses_config(self.rspec['ip_addresses']) + add_loopback = True + if 'isolate_loopback' in self.rspec['tags']: + add_loopback = self.rspec['tags']['isolate_loopback'] != "1" + self.set_ipaddresses_config(self.rspec['ip_addresses'], add_loopback) #logger.log("sliver_vs: %s: Setting name to %s" % (self.name, self.slice_id)) #self.setname(self.slice_id)