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kaf24@scramble.cl.cam.ac.uk
7849052048
console_client.py, __init__.py, setup.py, Makefile: new file Many files: New console-terminal client in xenctl.console_client Python package. New option to xc_dom_create (-c on cmdline or auto_console in defaults file) to automatically become a console client. utils.py: Rename: tools/xc/py/XenoUtil.py -> tools/xenctl/lib/utils.py
146 lines
4.2 KiB
Plaintext
146 lines
4.2 KiB
Plaintext
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##### Edit this python file to reflect the configuration of your system
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##### This example script requires variable 'ip' to be set, and optionally
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##### netmask and gatewaty for the kernel command line
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def config_usage ():
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print >>sys.stderr, """
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The config file %s requires the following vars to be defined:
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ip -- List of IP addr(s) for Xen to route to domain
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e.g. '-Dip=1.2.3.4,5.6.7.8'
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The following variables may be optionally defined:
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mem -- Adjust initial memory allocation (default 64MB)
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netmask -- Override gateway for kernel ip= command line
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gateway -- Override network for kernel ip= command line
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""" % config_file
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try:
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ip
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except:
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print "Set variable 'ip' using '-Dip=1.2.3.4,5.6.7.8'"
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assert()
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# STEP 1. Specify kernel image file and otional ramdisk. Can be gzip'ed.
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image = "/boot/xenolinux.gz"
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ramdisk = "/boot/initrd.gz"
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builder_fn='linux' # this is a linux domain
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# STEP 2. The initial memory allocation (in megabytes) for the new domain.
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try:
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mem_size = int(mem)
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except NameError:
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mem_size = 64
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# STEP 3. A handy name for your new domain.
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# appends either first hostname or last quad of first IP address dependant on value passed
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quads = string.split(ip, '.')
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if len(quads) == 4: # fragile heuristic for valid IP verification
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domain_name = "Xen VM .%s" % quads[3] # use last quad of IP
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else:
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domain_name = "Xen VM: %s" % ip # use hostname passed in
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# STEP 4. Specify IP address(es), for the new domain. You need to
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# configure IP addrs within the domain just as you do normally. This
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# is just to let Xen know about them so it can route packets
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# appropriately.
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#vfr_ipaddr = ["111.222.333.444","222.333.444.555"]
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#vfr_ipaddr = [xenctl.utils.add_offset_to_ip(xenctl.utils.get_current_ipaddr(),vmid)]
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vfr_ipaddr = map(socket.gethostbyname,string.split(ip,','))
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# STEP 5a. Identify any physcial partitions or virtual disks you want the
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# domain to have access to, and what you want them accessible as
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# e.g. vbd_list = [ ('phy:sda1','sda1', 'w'),
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# ('phy:sda%d' % (3+vmid), 'hda2', 'r'),
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# ('vd:as73gd784dh','hda1','w'),
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# ('phy:cdrom','hdd','r')
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vbd_list = [ ('phy:cdrom','hdd','r' ) ]
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# STEP 5b. Set the VBD expertise level. Most people should leave this
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# on 0, at least to begin with - this script can detect most dangerous
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# disk sharing between domains and with this set to zero it will only
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# allow read only sharing.
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vbd_expert = 0
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# STEP 6. Build the command line for the new domain. Edit as req'd.
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# You only need the ip= line if you're NFS booting or the root file system
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# doesn't set it later e.g. in ifcfg-eth0 or via DHCP
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# You can use 'extrabit' to set the runlevel and custom environment
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# variables used by custom rc scripts (e.g. VMID=, usr= )
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# see if we have a local IP at all
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localip=''
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for i in vfr_ipaddr:
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if xenctl.utils.check_subnet(i,'169.254.0.0','255.255.0.0'):
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localip=i
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break
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# if either netmask and gateway has been set from the command line,
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# associate it with the first IP address that has been specified.
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myip = ''
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try:
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netmask = socket.gethostbyname( netmask )
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gateway = socket.gethostbyname( gateway )
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myip = vfr_ipaddr[0]
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except NameError:
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netmask = xenctl.utils.get_current_ipmask()
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gateway = xenctl.utils.get_current_ipgw()
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# if we haven't got an address, see if we have one that matches the LAN
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if not myip:
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if netmask and gateway:
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for i in vfr_ipaddr:
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if xenctl.utils.check_subnet(i,gateway,netmask):
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myip=i
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break
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# if we still haven't got an address, see if there's a link local one
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if not myip and localip:
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myip = localip
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netmask = '255.255.0.0'
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gateway = '169.254.1.0'
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# As a final fallback, through everything down the interface
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if not myip:
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myip = vfr_ipaddr[0]
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netmask = '0.0.0.0'
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gateway = ''
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# Calculate the components with which we will build the command line
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nfsserv = '169.254.1.0'
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cmdline_ip="ip="+myip+":"+nfsserv+":"+gateway+":"+netmask+"::eth0:off"
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cmdline_root = "root=/dev/ram0 rw init=/linuxrc"
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if localip:
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cmdline_extra = "4 LOCALIP=%s" % localip
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else:
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cmdline_extra = "4"
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# STEP 7. Set according to whether you want the script to watch the domain
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# and auto-restart it should it die or exit.
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auto_restart = False
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#auto_restart = True
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