1 # Copyright (c) 2003 Intel Corporation
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44 import os, sys, string
47 from Exceptions import *
49 import BootServerRequest
54 Download enough files to run rpm and yum from a chroot in
55 the system image directory
57 Expect the following variables from the store:
58 SYSIMG_PATH the path where the system image will be mounted
59 PARTITIONS dictionary of generic part. types (root/swap)
60 and their associated devices.
61 SUPPORT_FILE_DIR directory on the boot servers containing
62 scripts and support files
63 NODE_ID the id of this machine
65 Sets the following variables:
66 TEMP_BOOTCD_PATH where the boot cd is remounted in the temp
68 ROOT_MOUNTED set to 1 when the the base logical volumes
72 log.write( "\n\nStep: Install: Bootstrapping RPM.\n" )
74 # make sure we have the variables we need
76 SYSIMG_PATH= vars["SYSIMG_PATH"]
78 raise ValueError, "SYSIMG_PATH"
80 PARTITIONS= vars["PARTITIONS"]
81 if PARTITIONS == None:
82 raise ValueError, "PARTITIONS"
84 SUPPORT_FILE_DIR= vars["SUPPORT_FILE_DIR"]
85 if SUPPORT_FILE_DIR == None:
86 raise ValueError, "SUPPORT_FILE_DIR"
88 NODE_ID= vars["NODE_ID"]
90 raise ValueError, "NODE_ID"
93 raise BootManagerException, "Missing variable in vars: %s\n" % var
94 except ValueError, var:
95 raise BootManagerException, "Variable in vars, shouldn't be: %s\n" % var
99 # make sure the required partitions exist
100 val= PARTITIONS["root"]
101 val= PARTITIONS["swap"]
102 val= PARTITIONS["vservers"]
103 except KeyError, part:
104 log.write( "Missing partition in PARTITIONS: %s\n" % part )
107 bs_request= BootServerRequest.BootServerRequest()
109 log.write( "turning on swap space\n" )
110 utils.sysexec( "swapon %s" % PARTITIONS["swap"], log )
112 # make sure the sysimg dir is present
113 utils.makedirs( SYSIMG_PATH )
115 log.write( "mounting root file system\n" )
116 utils.sysexec( "mount -t ext3 %s %s" % (PARTITIONS["root"],SYSIMG_PATH), log )
118 log.write( "mounting vserver partition in root file system\n" )
119 utils.makedirs( SYSIMG_PATH + "/vservers" )
120 utils.sysexec( "mount -t ext3 %s %s/vservers" % (PARTITIONS["vservers"],
123 vars['ROOT_MOUNTED']= 1
126 # download and extract support tarball for
127 # this step, which has everything
128 # we need to successfully run
129 for step_support_file in [ "PlanetLab-Bootstrap.tar.bz2",
130 "alpina-BootstrapRPM.tar.bz2" ]:
131 source_file= "%s/%s" % (SUPPORT_FILE_DIR,step_support_file)
132 dest_file= "%s/%s" % (SYSIMG_PATH, step_support_file)
134 # 30 is the connect timeout, 7200 is the max transfer time
135 # in seconds (2 hours)
136 log.write( "downloading %s\n" % step_support_file )
137 result= bs_request.DownloadFile( source_file, None, None,
141 # New bootstrap tarball contains everything necessary to
142 # boot, no need to bootstrap further.
143 vars['SKIP_INSTALL_BASE']= (step_support_file == "PlanetLab-Bootstrap.tar.bz2")
147 raise BootManagerException, "Unable to download %s from server." % \
150 log.write( "extracting %s in %s\n" % (dest_file,SYSIMG_PATH) )
151 result= utils.sysexec( "tar -C %s -xpjf %s" % (SYSIMG_PATH,dest_file), log )
152 utils.removefile( dest_file )
154 # get the yum configuration file for this node (yum.conf).
155 # this needs to come from the configuration file service,
156 # so, if its a beta node, it'll install the beta rpms from
157 # the beginning. The configuration file service will return
158 # the url for the file we need to request to get the actual
159 # conf file, so two requests need to be made.
161 # the only changes we will need to make to it are to change
162 # the cache and log directories, so when we run yum from
163 # the chrooted tempfs mount, it'll cache the rpms on the
166 log.write( "Fetching URL for yum.conf from configuration file service\n" )
168 postVars= {"node_id" : NODE_ID,
169 "file" : "/etc/yum.conf"}
171 yum_conf_url_file= "/tmp/yumconf.url"
173 result= bs_request.DownloadFile(
174 "/db/plnodeconf/getsinglefile.php",
175 None, postVars, 1, 1, yum_conf_url_file)
178 log.write( "Unable to make request to get url for yum.conf\n" )
182 yum_conf_url= file(yum_conf_url_file,"r").read()
183 yum_conf_url= string.strip(yum_conf_url)
184 if yum_conf_url == "":
185 raise BootManagerException, \
186 "Downloaded yum configuration file URL is empty."
188 raise BootManagerException, \
189 "Unable to open downloaded yum configuration file URL."
191 # now, get the actual contents of yum.conf for this node
192 log.write( "Fetching yum.conf contents from configuration file service\n" )
195 download_file_loc= "%s/etc/yum.conf" % SYSIMG_PATH
197 result= bs_request.DownloadFile( yum_conf_url,
198 None, postVars, 1, 1,
202 log.write( "Unable to make request to get yum.conf\n" )
205 # copy resolv.conf from the base system into our temp dir
206 # so DNS lookups work correctly while we are chrooted
207 log.write( "Copying resolv.conf to temp dir\n" )
208 utils.sysexec( "cp /etc/resolv.conf %s/etc/" % SYSIMG_PATH, log )
210 # mount the boot cd in the temp path, under /mnt/cdrom. this way,
211 # we can use the certs when programs are running
212 # chrooted in the temp path
213 cdrom_mount_point= "%s/mnt/cdrom" % SYSIMG_PATH
214 utils.makedirs( cdrom_mount_point )
215 log.write( "Copying contents of /usr/bootme to /mnt/cdrom\n" )
216 utils.sysexec( "cp -r /usr/bootme %s/mnt/cdrom/" % SYSIMG_PATH, log )