3 # Copyright (c) 2003 Intel Corporation
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7 # modification, are permitted provided that the following conditions are
10 # * Redistributions of source code must retain the above copyright
11 # notice, this list of conditions and the following disclaimer.
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34 # EXPORT LAWS: THIS LICENSE ADDS NO RESTRICTIONS TO THE EXPORT LAWS OF
35 # YOUR JURISDICTION. It is licensee's responsibility to comply with any
36 # export regulations applicable in licensee's jurisdiction. Under
37 # CURRENT (May 2000) U.S. export regulations this software is eligible
38 # for export from the U.S. and can be downloaded by or otherwise
39 # exported or reexported worldwide EXCEPT to U.S. embargoed destinations
40 # which include Cuba, Iraq, Libya, North Korea, Iran, Syria, Sudan,
41 # Afghanistan and any other country to which the U.S. has embargoed
46 from random import Random
50 #PLANETLAB_BIN = "/usr/local/planetlab/bin/"
51 #sys.path.append(PLANETLAB_BIN)
52 #import BootServerRequest
55 NODEUPDATE_PID_FILE= "/var/run/NodeUpdate.pid"
57 # variables for cron file creation
58 TARGET_SCRIPT = '(echo && date && echo && /usr/local/planetlab/bin/NodeUpdate.py start) >>/var/log/NodeUpdate.log 2>&1'
59 TARGET_DESC = 'Update node RPMs periodically'
61 TARGET_SHELL = '/bin/bash'
62 CRON_FILE = '/etc/cron.d/NodeUpdate.cron'
64 YUM_PATH = "/usr/bin/yum"
68 RPM_GPG_PATH = "/etc/pki/rpm-gpg"
71 # location of file containing http/https proxy info, if needed
72 PROXY_FILE = '/etc/planetlab/http_proxy'
74 # this is the flag that indicates an update needs to restart
75 # the system to take effect. it is created by the rpm that requested
77 REBOOT_FLAG = '/etc/planetlab/update-reboot'
79 # location of directory containing boot server ssl certs
80 SSL_CERT_DIR='/mnt/cdrom/bootme/cacert/'
82 # file containing list of extra groups to attempt to update,
84 EXTRA_GROUPS_FILE= '/etc/planetlab/extra-node-groups'
86 # file containing a list of rpms that we should attempt to delete
87 # before we updating everything else. this list is not
88 # removed with 'yum remove', because that could accidently remove
89 # dependency rpms that were not intended to be deleted.
90 DELETE_RPM_LIST_FILE= '/etc/planetlab/delete-rpm-list'
93 # print out a message only if we are displaying output
99 # print out a message only if we are displaying output
104 # create an entry in /etc/cron.d so we run periodically.
105 # we will be run once a day at a 0-59 minute random offset
106 # into a 0-23 random hour
107 def UpdateCronFile():
110 randomMinute= Random().randrange( 0, 59, 1 );
111 randomHour= Random().randrange( 0, 23, 1 );
113 f = open( CRON_FILE, 'w' );
114 f.write( "# %s\n" % (TARGET_DESC) );
115 f.write( "MAILTO=%s\n" % (TARGET_USER) );
116 f.write( "SHELL=%s\n" % (TARGET_SHELL) );
117 f.write( "%s %s * * * %s %s\n\n" %
118 (randomMinute, randomHour, TARGET_USER, TARGET_SCRIPT) );
121 print( "Created new cron.d entry." )
123 print( "Unable to create cron.d entry." )
126 # simply remove the cron file we created
127 def RemoveCronFile():
129 os.unlink( CRON_FILE )
130 print( "Deleted cron.d entry." )
132 print( "Unable to delete cron.d entry." )
138 def __init__( self, doReboot ):
139 if self.CheckProxy():
140 os.environ['http_proxy']= self.HTTP_PROXY
141 os.environ['HTTP_PROXY']= self.HTTP_PROXY
143 self.doReboot= doReboot
147 def CheckProxy( self ):
148 Message( "Checking existance of proxy config file..." )
150 if os.access(PROXY_FILE, os.R_OK) and os.path.isfile(PROXY_FILE):
151 self.HTTP_PROXY= string.strip(file(PROXY_FILE,'r').readline())
152 Message( "Using proxy %s." % self.HTTP_PROXY )
155 Message( "Not using any proxy." )
159 def InstallKeys( self ):
160 Message( "\nRemoving any existing GPG signing keys from the RPM database" )
161 os.system( "%s --allmatches -e gpg-pubkey" % RPM_PATH )
163 Message( "\nInstalling all GPG signing keys in %s" % RPM_GPG_PATH )
164 os.system( "%s --import %s/*" % (RPM_PATH, RPM_GPG_PATH) )
167 def ClearRebootFlag( self ):
168 os.system( "/bin/rm -rf %s" % REBOOT_FLAG )
171 def CheckForUpdates( self ):
173 Message( "\nRemoving any existing reboot flags" )
174 self.ClearRebootFlag()
176 if self.doReboot == 0:
177 Message( "\nIgnoring any reboot flags set by RPMs" );
179 Message( "\nUpdating PlanetLab group" )
180 os.system( "%s -y groupupdate \"PlanetLab\"" %
183 Message( "\nUpdating rest of system" )
184 os.system( "%s -y update" %
187 Message( "\nChecking for extra groups to update" )
188 if os.access(EXTRA_GROUPS_FILE, os.R_OK) and \
189 os.path.isfile(EXTRA_GROUPS_FILE):
190 extra_groups_contents= file(EXTRA_GROUPS_FILE).read()
191 extra_groups_contents= string.strip(extra_groups_contents)
192 if extra_groups_contents == "":
193 Message( "No extra groups found in file." )
195 for group in string.split(extra_groups_contents,"\n"):
196 Message( "\nUpdating %s group" % group )
197 os.system( "%s -y groupupdate \"%s\"" %
200 Message( "No extra groups file found" )
202 if os.access(REBOOT_FLAG, os.R_OK) and os.path.isfile(REBOOT_FLAG) and self.doReboot:
203 Message( "\nAt least one update requested the system be rebooted" )
204 self.ClearRebootFlag()
205 os.system( "/sbin/shutdown -r now" )
208 def RemoveRPMS( self ):
210 Message( "\nLooking for RPMs to be deleted." )
211 if os.access(DELETE_RPM_LIST_FILE, os.R_OK) and \
212 os.path.isfile(DELETE_RPM_LIST_FILE):
213 rpm_list_contents= file(DELETE_RPM_LIST_FILE).read()
214 rpm_list_contents= string.strip(rpm_list_contents)
216 if rpm_list_contents == "":
217 Message( "No RPMs listed in file to delete." )
220 rpm_list= string.join(string.split(rpm_list_contents))
222 Message( "Deleting these RPMs:" )
223 Message( rpm_list_contents )
225 rc= os.system( "%s -ev %s" % (RPM_PATH, rpm_list) )
228 Error( "Unable to delete RPMs, continuing. rc=%d" % rc )
230 Message( "RPMs deleted successfully." )
233 Message( "No RPMs list file found." )
237 if __name__ == "__main__":
239 # if we are invoked with 'start', display the output. this
240 # is usefull for running something under cron and as a service
241 # (at startup), so the cron only outputs errors and doesn't
242 # generate mail when it works correctly
246 # if we hit an rpm that requests a reboot, do it if this is
247 # set to 1. can be turned off by adding noreboot to command line
252 if "start" in sys.argv:
255 if "noreboot" in sys.argv:
258 if "updatecron" in sys.argv:
259 # simply update the /etc/cron.d file for us, and exit
263 if "removecron" in sys.argv:
268 # see if we are already running by checking the existance
269 # of a PID file, and if it exists, attempting a test kill
270 # to see if the process really does exist. If both of these
273 if os.access(NODEUPDATE_PID_FILE, os.R_OK):
274 pid= string.strip(file(NODEUPDATE_PID_FILE).readline())
276 if os.system("/bin/kill -0 %s > /dev/null 2>&1" % pid) == 0:
277 Message( "It appears we are already running, exiting." )
280 # write out our process id
281 pidfile= file( NODEUPDATE_PID_FILE, 'w' )
282 pidfile.write( "%d\n" % os.getpid() )
286 nodeupdate= NodeUpdate(doReboot)
288 Error( "Unable to initialize." )
290 nodeupdate.RemoveRPMS()
291 nodeupdate.InstallKeys()
292 nodeupdate.CheckForUpdates()
293 Message( "\nUpdate complete." )
295 # remove the PID file
296 os.unlink( NODEUPDATE_PID_FILE )