3 # Copyright (c) 2003 Intel Corporation
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7 # modification, are permitted provided that the following conditions are
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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
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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) >>/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"
69 # location of file containing http/https proxy info, if needed
70 PROXY_FILE = '/etc/planetlab/http_proxy'
72 # this is the flag that indicates an update needs to restart
73 # the system to take effect. it is created by the rpm that requested
75 REBOOT_FLAG = '/etc/planetlab/update-reboot'
77 # location of directory containing boot server ssl certs
78 SSL_CERT_DIR='/mnt/cdrom/bootme/cacert/'
80 # file containing list of extra groups to attempt to update,
82 EXTRA_GROUPS_FILE= '/etc/planetlab/extra-node-groups'
84 # file containing a list of rpms that we should attempt to delete
85 # before we updating everything else. this list is not
86 # removed with 'yum remove', because that could accidently remove
87 # dependency rpms that were not intended to be deleted.
88 DELETE_RPM_LIST_FILE= '/etc/planetlab/delete-rpm-list'
91 # print out a message only if we are displaying output
97 # print out a message only if we are displaying output
102 # create an entry in /etc/cron.d so we run periodically.
103 # we will be run once a day at a 0-59 minute random offset
104 # into a 0-23 random hour
105 def UpdateCronFile():
108 randomMinute= Random().randrange( 0, 59, 1 );
109 randomHour= Random().randrange( 0, 23, 1 );
111 f = open( CRON_FILE, 'w' );
112 f.write( "# %s\n" % (TARGET_DESC) );
113 f.write( "MAILTO=%s\n" % (TARGET_USER) );
114 f.write( "SHELL=%s\n" % (TARGET_SHELL) );
115 f.write( "%s %s * * * %s %s\n\n" %
116 (randomMinute, randomHour, TARGET_USER, TARGET_SCRIPT) );
119 print( "Created new cron.d entry." )
121 print( "Unable to create cron.d entry." )
124 # simply remove the cron file we created
125 def RemoveCronFile():
127 os.unlink( CRON_FILE )
128 print( "Deleted cron.d entry." )
130 print( "Unable to delete cron.d entry." )
136 def __init__( self, doReboot ):
137 if self.CheckProxy():
138 os.environ['http_proxy']= self.HTTP_PROXY
139 os.environ['HTTP_PROXY']= self.HTTP_PROXY
141 self.doReboot= doReboot
145 def CheckProxy( self ):
146 Message( "Checking existance of proxy config file..." )
148 if os.access(PROXY_FILE, os.R_OK) and os.path.isfile(PROXY_FILE):
149 self.HTTP_PROXY= string.strip(file(PROXY_FILE,'r').readline())
150 Message( "Using proxy %s." % self.HTTP_PROXY )
153 Message( "Not using any proxy." )
157 def ClearRebootFlag( self ):
158 os.system( "/bin/rm -rf %s" % REBOOT_FLAG )
161 def CheckForUpdates( self ):
163 Message( "\nRemoving any existing reboot flags" )
164 self.ClearRebootFlag()
166 if self.doReboot == 0:
167 Message( "\nIgnoring any reboot flags set by RPMs" );
169 Message( "\nUpdating PlanetLab group" )
170 os.system( "%s --sslcertdir=%s -y groupupdate \"PlanetLab\"" %
171 (YUM_PATH,SSL_CERT_DIR) )
173 Message( "\nUpdating rest of system" )
174 os.system( "%s --sslcertdir=%s -y update" %
175 (YUM_PATH,SSL_CERT_DIR) )
177 Message( "\nChecking for extra groups to update" )
178 if os.access(EXTRA_GROUPS_FILE, os.R_OK) and \
179 os.path.isfile(EXTRA_GROUPS_FILE):
180 extra_groups_contents= file(EXTRA_GROUPS_FILE).read()
181 extra_groups_contents= string.strip(extra_groups_contents)
182 if extra_groups_contents == "":
183 Message( "No extra groups found in file." )
185 for group in string.split(extra_groups_contents,"\n"):
186 Message( "\nUpdating %s group" % group )
187 os.system( "%s --sslcertdir=%s -y groupupdate \"%s\"" %
188 (YUM_PATH,SSL_CERT_DIR,group) )
190 Message( "No extra groups file found" )
192 if os.access(REBOOT_FLAG, os.R_OK) and os.path.isfile(REBOOT_FLAG) and self.doReboot:
193 Message( "\nAt least one update requested the system be rebooted" )
194 self.ClearRebootFlag()
195 os.system( "/sbin/shutdown -r now" )
198 def RemoveRPMS( self ):
200 Message( "\nLooking for RPMs to be deleted." )
201 if os.access(DELETE_RPM_LIST_FILE, os.R_OK) and \
202 os.path.isfile(DELETE_RPM_LIST_FILE):
203 rpm_list_contents= file(DELETE_RPM_LIST_FILE).read()
204 rpm_list_contents= string.strip(rpm_list_contents)
206 if rpm_list_contents == "":
207 Message( "No RPMs listed in file to delete." )
210 rpm_list= string.join(string.split(rpm_list_contents))
212 Message( "Deleting these RPMs:" )
213 Message( rpm_list_contents )
215 rc= os.system( "%s -ev %s" % (RPM_PATH, rpm_list) )
218 Error( "Unable to delete RPMs, continuing. rc=%d" % rc )
220 Message( "RPMs deleted successfully." )
223 Message( "No RPMs list file found." )
227 if __name__ == "__main__":
229 # if we are invoked with 'start', display the output. this
230 # is usefull for running something under cron and as a service
231 # (at startup), so the cron only outputs errors and doesn't
232 # generate mail when it works correctly
236 # if we hit an rpm that requests a reboot, do it if this is
237 # set to 1. can be turned off by adding noreboot to command line
242 if "start" in sys.argv:
245 if "noreboot" in sys.argv:
248 if "updatecron" in sys.argv:
249 # simply update the /etc/cron.d file for us, and exit
253 if "removecron" in sys.argv:
258 # see if we are already running by checking the existance
259 # of a PID file, and if it exists, attempting a test kill
260 # to see if the process really does exist. If both of these
263 if os.access(NODEUPDATE_PID_FILE, os.R_OK):
264 pid= string.strip(file(NODEUPDATE_PID_FILE).readline())
266 if os.system("/bin/kill -0 %s > /dev/null 2>&1" % pid) == 0:
267 Message( "It appears we are already running, exiting." )
270 # write out our process id
271 pidfile= file( NODEUPDATE_PID_FILE, 'w' )
272 pidfile.write( "%d\n" % os.getpid() )
276 nodeupdate= NodeUpdate(doReboot)
278 Error( "Unable to initialize." )
280 nodeupdate.RemoveRPMS()
281 nodeupdate.CheckForUpdates()
282 Message( "\nUpdate complete." )
284 # remove the PID file
285 os.unlink( NODEUPDATE_PID_FILE )