def b20_install_cloud_agent(self):
"""
Install the oracle cloud agent.
Returns
-------
bool: True on success, False otherwise. (always True as failing to
install the oracle cloud agent is not fatal.
"""
_logger.debug('__ Install oracle cloud agent.')
if bool(migrate_data.oracle_cloud_agent_location):
_logger.debug('oracle cloud agent present: %s',
migrate_data.oracle_cloud_agent_location)
else:
_logger.debug('No oracle cloud agent package present, skipping.')
return True
#
# get package manipulation tool.
pkg_mgr = self._exec_yum \
if self.package_tool['pkg_mgr'] == 'yum' else self._exec_dnf
#
# install rpm
oracle_cloud_agent_rpm = migrate_data.oracle_cloud_agent_location
simple_rpm = oracle_cloud_agent_rpm.split('/')[-1]
try:
install_output = pkg_mgr(
self.package_tool['package_localinstall'] +
[oracle_cloud_agent_rpm])
_logger.debug('Successfully installed pkg %s:\n%s', simple_rpm,
install_output)
migrate_tools.result_msg(msg='Installed %s.' % simple_rpm,
result=False)
pause_msg('cloud agent', pause_flag='_OCI_AGENT')
except Exception as e:
_logger.warning('Failed to install %s: %s', simple_rpm, str(e))
return True
def __init__(self, filename):
"""
Initialisation of the qcow2 header analysis.
Parameters
----------
filename: str
Full path of the qcow2 image file.
"""
_logger.debug('qcow2 header size: %d bytes' % self.head_size)
super(Qcow2Head, self).__init__(filename)
head_size = struct.calcsize(Qcow2Head.qcowhead_fmt)
try:
with open(self._fn, 'rb') as f:
head_bin = f.read(head_size)
_logger.debug('%s header successfully read' % self._fn)
except Exception as e:
_logger.critical(' Failed to read header of %s: %s' %
(self._fn, str(e)))
raise OciMigrateException('Failed to read the header of %s: %s' %
(self._fn, str(e)))
qcow2header = struct.unpack(Qcow2Head.qcowhead_fmt, head_bin)
self.stat = os.stat(self._fn)
self.img_tag = os.path.splitext(os.path.split(self._fn)[1])[0]
self.qcowhead_dict = dict(
(name[2], qcow2header[i])
for i, name in enumerate(Qcow2Head.header2_structure))
self.img_header = dict()
self.img_header['head'] = self.qcowhead_dict
migrate_tools.result_msg(msg='Got image %s header' % filename,
result=False)
def update_network_config(rootdir):
"""
Modify the network configuration in the image file to prevent conflicts
during import. Currently
ifcfg, NetworkManager, netplan, network connections systemd-networkd and
interface
file are scanned. Bonding and bridging are not supported for now,
nor multiple ip per interface.
Parameters
----------
rootdir: str
Full path of image root dir.
Returns
-------
list: Network interfaces
dict: List with dictionary representation of the network
configuration files.
"""
migrate_tools.result_msg(msg='Adjust network configuration.', result=False)
network_config = dict()
network_list = list()
#
# Cleanup udev network device naming.
if cleanup_udev(rootdir):
_logger.debug('udev successfully modified.')
else:
_logger.debug('Failed to modify udev rules with respect to network '
'device naming.')
#
# ifcfg
ifcfg_nics, ifcfg_data = reconfigure_ifcfg_config(rootdir)
network_list += ifcfg_nics
network_config['ifcfg'] = ifcfg_data
#
# netplan
netplan_nics, netplan_data = reconfigure_netplan(rootdir)
network_list += netplan_nics
network_config['netplan'] = netplan_data
#
# network manager
nwmg_nics, nwmg_data = reconfigure_networkmanager(rootdir)
network_list += nwmg_nics
network_config['network_manager'] = nwmg_data
#
# interfaces
int_list, int_data = reconfigure_interfaces(rootdir)
network_list += int_list
network_config['interfaces'] = int_data
#
# systemd
netsys_nics, netsys_data = reconfigure_systemd_networkd(rootdir)
network_list += netsys_nics
network_config['systemd-networkd'] = netsys_data
migrate_tools.result_msg(msg='Adjusted network configuration.',
result=True)
return network_list, network_config
def __init__(self, filename):
"""
Initialisation of the vmdk header analysis.
Parameters
----------
filename: str
Full path of the vmdk image file.
"""
super(VmdkHead, self).__init__(filename)
_logger.debug('VMDK header size: %d bytes' % self.head_size)
try:
with open(self._fn, 'rb') as f:
head_bin = f.read(self.head_size)
_logger.debug('%s header successfully read' % self._fn)
except Exception as e:
_logger.critical(' Failed to read header of %s: %s' %
(self._fn, str(e)))
raise OciMigrateException('Failed to read the header of %s: %s' %
(self._fn, str(e)))
vmdkheader = struct.unpack(VmdkHead.vmdkhead_fmt, head_bin)
try:
with open(self._fn, 'rb') as f:
f.seek(512)
head_descr = [
it for it in f.read(1024).decode('utf-8').splitlines()
if '=' in it
]
except Exception as e:
_logger.critical(' Failed to read description of %s: %s' %
(self._fn, str(e)))
raise OciMigrateException(
'Failed to read the description of %s: %s' %
(self._fn, str(e)))
self.stat = os.stat(self._fn)
self.img_tag = os.path.splitext(os.path.split(self._fn)[1])[0]
self.vmdkhead_dict = dict(
(name[2], vmdkheader[i])
for i, name in enumerate(VmdkHead.header0_structure))
self.vmdkdesc_dict = dict(
[re.sub(r'"', '', kv).split('=') for kv in head_descr])
self.img_header = dict()
self.img_header['head'] = self.vmdkhead_dict
self.img_header['desc'] = self.vmdkdesc_dict
migrate_tools.result_msg(msg='Got image %s header' % filename,
result=False)
def show_header(self):
"""
Lists the header contents formatted.
Returns
-------
No return value.
"""
migrate_tools.result_msg(msg='\n %30s\n %30s' %
('QCOW2 file header data', '-' * 30),
result=False)
for f in Qcow2Head.header2_structure:
migrate_tools.result_msg(msg=''.join(
[" %-30s" % f[2], f[1] % self.qcowhead_dict[f[2]]]),
result=False)
def exec_sfdisk(devname):
"""
Collect the data about the partitions on the image file mounted on the
device devname using the sfdisk utility.
Parameters
----------
devname: str
The device.
Returns
-------
dict: The partition data with sfdisk results on success, None otherwise.
"""
cmd = ['sfdisk', '-d', devname]
_logger.debug('__ Running %s' % cmd)
pause_msg(cmd)
try:
result = run_popen_cmd(cmd).decode('utf-8')
partdata = dict()
for devx in result.splitlines():
if devx.startswith(devname):
key = devx.split(':')[0].strip()
migrate_tools.result_msg(msg='sfdisk partition %s' % key,
result=False)
thispart = {'start': 0, 'size': 0, 'Id': 0, 'bootable': False}
val = devx.split(':')[1].split(',')
for it in val:
if 'start' in it:
x = it.split('=')[1]
thispart['start'] = int(x)
elif 'size' in it:
x = it.split('=')[1]
thispart['size'] = int(x)
elif 'Id' in it:
x = it.split('=')[1]
thispart['Id'] = x.strip()
elif 'bootable' in it:
thispart['bootable'] = True
else:
_logger.debug('unrecognised item: %s' % val)
partdata[key] = thispart
_logger.debug(partdata)
return partdata
except Exception as e:
_logger.error(' Failed to collect sfdisk %s partition data: %s' %
(devname, str(e)))
return None
def __init__(self, filename):
"""
Initialisation of the templatetype header analysis.
Parameters
----------
filename: str
Full path of the template_type image file.
"""
super(TemplateTypeHead, self).__init__(filename)
_logger.debug('templatetype header size: %d bytes' % self.head_size)
try:
with open(self._fn, 'rb') as f:
head_bin = f.read(self.head_size)
_logger.debug('%s header successfully read' % self._fn)
except Exception as e:
_logger.critical(' Failed to read header of %s: %s'
% (self._fn, str(e)))
raise OciMigrateException('Failed to read the header of %s: %s'
% (self._fn, str(e)))
templatetypeheader = struct.unpack(TemplateTypeHead.templatetypehead_fmt, head_bin)
self.stat = os.stat(self._fn)
self.img_tag = os.path.splitext(os.path.split(self._fn)[1])[0]
self.templatehead_dict = dict((name[2], templatetypeheader[i])
for i, name
in enumerate(TemplateTypeHead.header2_structure))
self.img_header = dict()
self.img_header['head'] = self.templatehead_dict
migrate_tools.result_msg(msg='Got image %s header' % filename,
result=False)
#
# mount the image using the nbd
try:
self.devicename = self.mount_img()
_logger.debug('Image data %s' % self.devicename)
migrate_tools.result_msg(msg='Mounted %s' % self.devicename,
result=False)
deviceinfo = self.handle_image()
except Exception as e:
_logger.critical(' Error %s' % str(e))
raise OciMigrateException(str(e))
def image_size(self):
"""
Get the size of the image file.
Returns
-------
dict:
physical file size, logical file size
"""
img_sz = {
'physical': float(self.stat.st_size) / gigabyte,
'logical': float(self.vmdkhead_dict['capacity'] * 512) / gigabyte
}
migrate_tools.result_msg(
msg='Image size: physical %10.2f GB, logical %10.2f GB' %
(img_sz['physical'], img_sz['logical']),
result=True)
return img_sz
def image_size(self):
"""
Get the size of the image file.
Returns
-------
tuple: (float, float)
physical file size, logical file size
"""
img_sz = {
'physical': float(self.stat.st_size) / gigabyte,
'logical': float(self.qcowhead_dict['size']) / gigabyte
}
migrate_tools.result_msg(
msg='Image size: physical %10.2f GB, logical %10.2f GB' %
(img_sz['physical'], img_sz['logical']),
result=True)
return img_sz
def show_header(self):
"""
Lists the header contents formatted.
Returns
-------
No return value.
"""
migrate_tools.result_msg(msg='\n %30s\n %30s %30s' %
('VMDK file header data', '-' * 30, '-' * 30),
result=False)
for f in VmdkHead.header0_structure:
migrate_tools.result_msg(msg=''.join(
[' %30s : ' % f[2], f[1] % self.vmdkhead_dict[f[2]]]),
result=False)
migrate_tools.result_msg(
msg='\n %30s\n %30s %30s' %
('VMDK file descriptor data', '-' * 30, '-' * 30),
result=False)
for k in sorted(self.vmdkdesc_dict):
migrate_tools.result_msg(msg=' %30s : %-30s' %
(k, self.vmdkdesc_dict[k]),
result=False)
def reconfigure_ifcfg_config(rootdir):
"""
Modify the network configuration in the image file to prevent
conflicts during import. This is only for ol-type linux.
Parameters
----------
rootdir: str
Full path of image root dir as loopback mounted.
Returns
-------
list: list of nic.
dict: the interfaces configuration.
"""
#
# Rename the config files
_logger.debug('__ The network ifcfg configuration.')
ifcfg_list = list()
ifcfg_data = dict()
ifrootdir = rootdir + get_config_data('default_ifcfg')
if os.path.isdir(ifrootdir):
for cfgfile in glob(ifrootdir + '/ifcfg-*'):
_logger.debug('Checking configfile: %s' % cfgfile)
try:
with open(cfgfile, 'r') as f:
# nl = filter(None, [x[:x.find('#')] for x in f])
nl = [_f for _f in [x[:x.find('#')] for x in f] if _f]
ifcfg = dict(dl.replace('"', '').split('=') for dl in nl)
if 'DEVICE' in ifcfg:
devname = ifcfg['DEVICE']
else:
_logger.debug('Missing device name in %s' % cfgfile)
devname = cfgfile.split('/')[-1]
ifcfg_list.append(devname)
ifcfg_data[devname] = ifcfg
_logger.debug('Network interface: %s' % devname)
except Exception as e:
_logger.error(
' Problem reading network configuration file %s: '
'%s' % (cfgfile, str(e)))
else:
_logger.debug('No ifcfg network configuration.')
#
# backup
for fn in glob(ifrootdir + '/ifcfg-*'):
if 'ifcfg-lo' not in fn:
fn_bck = system_tools.exec_rename(fn)
if bool(fn_bck):
_logger.debug('Network config file %s successfully '
'renamed to %s' % (fn, fn_bck))
else:
_logger.debug('Failed to backup network configuration '
'file %s to %s.' % (fn, fn_bck))
# migrate_tools.error_msg('Failed to backup network configuration '
# 'file %s to %s.' % (fn, fn_bck))
# raise OciMigrateException('Failed to rename network config '
# 'file %s to %s' % (fn, fn_bck))
else:
_logger.debug('ifcfg-lo found.')
#
# Generate new default network configuration.
if len(ifcfg_list) > 0:
nic0 = sorted(ifcfg_list)[0]
dhcpniccfg = ifrootdir + '/ifcfg-%s' % nic0
_logger.debug('Replacing network config file %s' % dhcpniccfg)
try:
with open(dhcpniccfg, 'w') as f:
f.writelines(
ln.replace('_XXXX_', nic0) + '\n'
for ln in get_config_data('default_ifcfg_config'))
migrate_tools.result_msg(
msg='Replaced ifcfg network configuration.', result=False)
except Exception as e:
_logger.error(' Failed to write %s/ifcfg-eth0' % ifrootdir)
migrate_tools.error_msg('Failed to write %s: %s' %
(dhcpniccfg, str(e)))
raise OciMigrateException('Failed to write %s: %s' %
(dhcpniccfg, str(e)))
else:
_logger.debug('No ifcfg definitions found.')
return ifcfg_list, ifcfg_data
def reconfigure_systemd_networkd(rootdir):
"""
Parse the systemd network configuration.
Parameters
----------
rootdir: str
Full path of image root dir as loopback mounted.
Returns
-------
list: list of nic.
dict: the interfaces configuration.
"""
_logger.debug('__ The network systemd-networkd configuration.')
sys_data = dict()
sys_nics = list()
nw_ignore = ['container-host0', 'container-ve', 'container-vz']
for root_path in get_config_data('default_systemd'):
networkd_root = rootdir + root_path
if os.path.isdir(networkd_root):
_logger.debug('systemd network directory exists.')
systemd_files = glob(root_path + '/*.network')
if len(systemd_files) > 0:
for sf in sorted(systemd_files):
ignore = False
for ig in nw_ignore:
if ig in sf:
ignore = True
break
if not ignore:
systemtd_net_config = ConfigParser()
sys_data[sf] = dict()
try:
sv = systemtd_net_config.read(sf)
if 'Match' in systemtd_net_config.sections():
ifname = systemtd_net_config.get(
'Match', 'Name')
sys_nics.append(ifname)
else:
_logger.debug('-- No Match section in %s' % sf)
#
for sec in systemtd_net_config.sections():
sys_data[sf][sec] = systemtd_net_config.items(
sec)
_logger.debug('%s' % sys_data[sf][sec])
except Exception as e:
_logger.error(' Failed to parse %s: %s' %
(sf, str(e)))
#
# rename - backup
bcknm = system_tools.exec_rename(sf)
if bool(bcknm):
_logger.debug(
'Network config file %s renamed to %s' %
(sf, bcknm))
else:
_logger.error(' Failed to rename %s' % sf)
raise OciMigrateException('Failed to rename %s ' %
sf)
else:
_logger.debug('No systemd-networkd configuration.')
else:
_logger.debug('%s does not exist.' %
get_config_data('default_systemd'))
#
# write new config
if len(sys_nics) > 0:
nicname = sorted(sys_nics)[0]
with open(rootdir + get_config_data('default_systemd_file'),
'w') as sdf:
sdf.writelines(
ln.replace('_XXXX_', nicname) + '\n'
for ln in get_config_data('default_systemd_config'))
migrate_tools.result_msg(
msg='systemd-networkd configuration rewritten.', result=True)
else:
_logger.debug('No systemd-networkd configuration.')
return sorted(sys_nics), sys_data
def b30_install_snap_packages(self):
"""
Add a job to the cloud-init config file to install additional packages
by snap at first boot. (snapd cannot be run while in chroot during
image preparation.)
Returns
-------
bool: True on success, False otherwise. (always True as packages to
be installed via snap are not considered essential.)
"""
def get_ubuntu_snap_package_list():
"""
Retrieve the list of packages to install from oci-migrate-config file.
Returns
-------
list: list of package names to install.
"""
_logger.debug('__ Collection list of snap packages.')
try:
snap_pkg_list = get_config_data(
'ubuntu_os_packages_to_install_snap')
if bool(snap_pkg_list):
pkg_list = '('
else:
_logger.debug('snap package list is empty.')
return False
_logger.debug('Package list: %s', snap_pkg_list)
for pkg in snap_pkg_list:
pkg_list = pkg_list.__add__("'")\
.__add__(pkg)\
.__add__("'")\
.__add__(" ")
pkg_list = pkg_list.__add__(')')
_logger.debug('Package list: %s', pkg_list)
return pkg_list
except Exception as e:
_logger.warning('Failed to find a list of packages: %s',
str(e))
return False
_logger.debug('__ Install software packages using snap.')
try:
#
# collect packages to install
packages = get_ubuntu_snap_package_list()
if not bool(packages):
_logger.debug('No extra packages to install.')
return True
#
# get snapd script name
ubuntu_os_snap_install_script = \
get_config_data('ubuntu_os_snap_install_script')
_logger.debug('snap package install script: %s',
ubuntu_os_snap_install_script)
#
# get, update and write the script.
with open(ubuntu_os_snap_install_script, 'w') as bashf:
bashf.writelines(
ln.replace('_XXXX_', packages) + '\n'
for ln in get_config_data('ubuntu_os_snapd_bash'))
os.chmod(ubuntu_os_snap_install_script, stat.S_IRWXU)
#
# update cloud-init with runcmd command
if migrate_tools.update_cloudconfig_runcmd(
ubuntu_os_snap_install_script):
_logger.debug('snap install script successfully added.')
migrate_tools.result_msg(msg='snap packages install script '
'successfully added.',
result=False)
else:
_logger.debug('Failed to add snap install script.')
except Exception as e:
_logger.warning(
'Failed to install one or more packages of %s:\n%s', packages,
str(e))
#
# not considered as essential or fatal.
return True
def reconfigure_interfaces(rootdir):
"""
Parse the network interfaces file.
Parameters
----------
rootdir: str
Full path of image root dir as loopback mounted.
Returns
-------
list: list of nic.
dict: the interfaces configuration.
"""
_logger.debug('__ The network interfaces configuration.')
int_data = dict()
int_nics = list()
root_path = rootdir + get_config_data('default_interfaces')
net_ifcfg_config = root_path + '/interfaces'
if os.path.isfile(net_ifcfg_config):
int_data[get_config_data('default_interfaces')] = list()
_logger.debug('%s file exists' % net_ifcfg_config)
try:
with open(net_ifcfg_config, 'r') as inf:
for ln in inf:
int_data[get_config_data('default_interfaces')].append(ln)
if 'iface' in ln.split():
if ln.split()[1] != 'lo':
int_nics.append(ln.split()[1])
else:
_logger.debug('no iface in %s' % ln)
except Exception as e:
_logger.error(' Error occured while reading %s: %s' %
(net_ifcfg_config, str(e)))
#
# rewrite
if len(int_nics) == 0:
_logger.debug('No interface definitions found in %s' %
net_ifcfg_config)
else:
try:
#
# backup
bck_root_path = system_tools.backup_dir(root_path)
_logger.debug('Copied %s to %s' % (root_path, bck_root_path))
#
# remove dir
shutil.rmtree(root_path + '/interfaces.d')
#
# recreate interfaces config
with open(net_ifcfg_config, 'w') as fi:
fi.writelines(
ln.replace('_XXXX_', int_nics[0]) + '\n'
for ln in get_config_data('default_interfaces_config'))
migrate_tools.result_msg(
msg='Network interfaces file rewritten.', result=False)
except Exception as e:
_logger.error(' Failed to write new interfaces configuration '
'file %s: %s' % (net_ifcfg_config, str(e)))
else:
_logger.debug('No network interfaces configuration.')
return int_nics, int_data
def reconfigure_networkmanager(rootdir):
"""
Replace the networkmanager configuration with Oracle Cloud Infrastructure
compatible version.
Parameters
----------
rootdir: str
Full path of image root dir as loopback mounted.
Returns
-------
list: list of nic.
dict: the network manager system-connections configurations
"""
_logger.debug('__ The NetworkManager configuration.')
netwmg_data = dict()
netwmg_nics = list()
network_config_dir = rootdir + get_config_data('default_nwconnections')
_logger.debug('Network manager dir: %s' % network_config_dir)
nw_mgr_cfg = rootdir + get_config_data('default_nwmconfig')
_logger.debug('Network manager conf: %s' % nw_mgr_cfg)
#
# backup
try:
#
# copy
if os.path.isfile(nw_mgr_cfg):
bck_nw_mgr_cfg = system_tools.exec_rename(nw_mgr_cfg)
if bool(bck_nw_mgr_cfg):
_logger.debug('Copied %s to %s' % (nw_mgr_cfg, bck_nw_mgr_cfg))
else:
_logger.warning(
'Failed to backup network manager configuration.')
else:
_logger.debug('No %s found.' % nw_mgr_cfg)
#
if os.path.isdir(network_config_dir):
bck_network_config_dir = system_tools.backup_dir(
network_config_dir)
_logger.debug('Copied %s to %s' %
(network_config_dir, bck_network_config_dir))
else:
_logger.debug('%s not found.' % network_config_dir)
except Exception as e:
migrate_tools.error_msg('Failed to backup the networkmanager '
'configuration: %s' % str(e))
#
#
if os.path.isdir(network_config_dir):
_logger.debug('NetworkManager/%s directory exists.' %
network_config_dir)
#
# contains nwm keyfiles?
nwm_files = glob(network_config_dir + '/*')
if len(nwm_files) > 0:
system_tools.exec_rmdir(network_config_dir)
system_tools.exec_mkdir(network_config_dir)
_logger.debug('%s emptied.' % network_config_dir)
else:
_logger.debug('No network manager keyfiles found.')
#
# update networkmanager configuration
# TODO: write config file with configparser
nwm_config_data = get_config_data('default_nwm_conf_file')
with open(nw_mgr_cfg, 'w') as nwmf:
nwmf.write('\n'.join(str(x) for x in nwm_config_data))
migrate_tools.result_msg(
msg='Networkmanager configuration updated.', result=False)
else:
_logger.debug(msg=' No NetworkManager configuration present.')
return netwmg_nics, netwmg_data
def a20_install_extra_pkgs(self):
"""
Install required and useful packages for OL-type installs, read the
list of packages from oci-migrate-conf.yaml, ol_os_packages_to_install.
Returns
-------
bool: True on success, False otherwise.
"""
def get_ol_package_list():
"""
Retrieve the list of packages to install from oci-migrate-config file.
Returns
-------
list: list of package names to install.
"""
_logger.debug('Collection list of packages.')
try:
pkg_list = get_config_data('ol_os_packages_to_install')
_logger.debug('Package list: %s' % pkg_list)
return pkg_list
except Exception as e:
_logger.warning('Failed to find a list of packages: %s' % str(e))
return False
_logger.debug('__ Installing extra packages.')
#
# collect packages to install
packages = get_ol_package_list()
if not bool(packages):
_logger.debug('No extra packages to install.')
return True
#
#
try:
#
# set current nameserver config.
if system_tools.set_nameserver():
_logger.debug('Updating nameserver info succeeded.')
else:
_logger.error(' Failed to update nameserver info.')
#
# get package manipulation tool.
pkg_mgr = self.exec_yum \
if self.package_tool['pkg_mgr'] == 'yum' else self.exec_dnf
#
# install packages
for pkg in packages:
#
# verify if the package is available, the correct channel enabled.
rpmlist = pkg_mgr(self.package_tool['package_available'] + [pkg])
pkg_present = False
for lline in rpmlist.splitlines():
_logger.debug('%s' % lline)
if pkg in lline:
_logger.debug('The rpm %s is available.' % pkg)
pkg_present = True
break
if not pkg_present:
_logger.error(' The rpm %s is missing.' % pkg)
migrate_data.migrate_preparation = False
migrate_data.migrate_non_upload_reason += \
'\n The rpm package %s is missing from ' \
'the yum repository.' % pkg
return False
else:
installoutput = \
pkg_mgr(self.package_tool['package_install'] + [pkg])
_logger.debug('Successfully installed pkg %s:\n%s'
% (pkg, installoutput))
migrate_tools.result_msg(msg='Installed %s.' % pkg,
result=False)
pause_msg(msg='Installed %s here, or not.' % pkg,
pause_flag='_OCI_CHROOT')
#
# restore nameserver data
if system_tools.restore_nameserver():
_logger.debug('Restoring nameserver info succeeded.')
else:
_logger.error(' Failed to restore nameserver info.')
except Exception as e:
errmsg = 'Failed to install one or more packages of ' \
'%s:\n%s' % (packages, str(e))
_logger.critical(' %s' % errmsg)
migrate_tools.error_msg('%s' % errmsg)
migrate_data.migrate_preparation = False
migrate_data.migrate_non_upload_reason += '\n %s' % errmsg
return False
return True
def main():
"""
Main
Returns
-------
int
0 on success, 1 otherwise.
"""
#
# set locale
lc_all_to_set = get_config_data('lc_all')
os.environ['LC_ALL'] = "%s" % lc_all_to_set
_logger.debug('Locale set to %s' % lc_all_to_set)
#
# python version
pythonver = sys.version_info[0]
_logger.debug('Python version is %s' % pythonver)
#
# parse the commandline
args = parse_args()
#
# Operator needs to be root.
if system_tools.is_root():
_logger.debug('User is root.')
else:
exit_with_msg(' *** ERROR *** You must run this program with root '
'privileges')
#
# Verbose mode is False by default
migrate_data.verbose_flag = args.verbose_flag
_logger.debug('Verbose level set to %s' % migrate_data.verbose_flag)
#
# Yes flag
migrate_data.yes_flag = args.yes_flag
_logger.debug('Answer to yes/no questions supposed to be yes always.')
#
# collect and save configuration data
migrate_data.oci_image_migrate_config = get_config_data('*')
#
try:
#
# input image
if args.input_image:
imagepath = args.input_image.name
resultfilename = get_config_data('resultfilepath') + \
'_' + \
os.path.splitext(os.path.basename(imagepath))[0] \
+ '.res'
migrate_data.resultfilename = resultfilename
migrate_tools.result_msg(msg='\n Running %s at %s\n'
% ((os.path.basename(sys.argv[0])
+ ' '
+ ' '.join(sys.argv[1:])),
time.ctime()),
flags='w',
result=True)
else:
raise OciMigrateException('Missing argument: input image path.')
#
# Import the 'format' modules and collect the format data
supported_formats = migrate_tools.import_formats()
if not bool(supported_formats):
exit_with_msg(' *** ERROR *** No image format modules found')
if migrate_data.verbose_flag:
show_supported_formats_data(supported_formats)
#
# Check the utilities installed.
util_list, missing_list = test_helpers()
_logger.debug('%s' % util_list)
if migrate_data.verbose_flag:
show_utilities(util_list, missing_list)
if missing_list:
raise OciMigrateException('%s needs packages %s installed.\n'
% (sys.argv[0], missing_list))
#
# if qemu-img is used, the minimal version is 2
qemuversioninfo = qemu_img_version()
if qemuversioninfo[1] < 2:
raise OciMigrateException('Minimal version of qemu-img is 2, '
'%s found.' % qemuversioninfo[0])
else:
_logger.debug('release data ok')
#
# Get the nameserver definition
if system_tools.get_nameserver():
migrate_tools.result_msg(msg='nameserver %s identified.'
% migrate_data.nameserver, result=False)
_logger.debug('Nameserver identified as %s' % migrate_data.nameserver)
else:
migrate_tools.error_msg('Failed to identify nameserver, using %s, '
'but might cause issues.'
% migrate_data.nameserver)
except Exception as e:
_logger.error('*** ERROR *** %s\n' % str(e))
exit_with_msg(' *** ERROR *** %s\n' % str(e))
#
# More on command line arguments.
#
# initialise output
migrate_tools.result_msg(msg='Results are written to %s.'
% migrate_data.resultfilename, result=True)
migrate_tools.result_msg(msg='Input image: %s' % imagepath, result=True)
#
# Verify if readable.
fn_magic = migrate_tools.get_magic_data(imagepath)
if fn_magic is None:
exit_with_msg('*** ERROR *** An error occured while trying to read '
'magic number of File %s.' % imagepath)
else:
pause_msg('Image Magic Number: %s' % fn_magic)
_logger.debug('Magic number %s successfully read' % fn_magic)
#
# Verify if image type is supported.
_logger.debug('Magic number of %s is %s' % (imagepath, fn_magic))
if fn_magic not in supported_formats:
exit_with_msg('*** ERROR *** Image type %s is not recognised.' % fn_magic)
else:
_logger.debug('Image type recognised.')
#
# Get the correct class.
imageclazz = supported_formats[fn_magic]
migrate_tools.result_msg(msg='Type of image %s identified as %s'
% (imagepath, imageclazz['name']), result=True)
pause_msg('Image type is %s' % imageclazz['name'])
#
# Locate the class and module
imageclassdef = getattr(sys.modules['oci_utils.migrate.image_types.%s'
% supported_formats[fn_magic]['name']],
imageclazz['clazz'])
image_object = imageclassdef(imagepath)
#
# Local volume groups.
vgs_result = system_tools.exec_vgs_noheadings()
migrate_data.local_volume_groups = \
vgs_result if bool(vgs_result) \
else []
_logger.debug('Workstation volume groups: %s'
% migrate_data.local_volume_groups)
#
# Rename local volume groups
if bool(migrate_data.local_volume_groups):
rename_msg = '\n The workstation has logical volumes defined. To avoid ' \
'duplicates, the \n logical volume groups will be temporary' \
' renamed to a hexadecimal uuid.\n If you are sure the ' \
'image to be uploaded does not contain logical volumes,\n' \
' or there are no conflicting volume group names, '\
'the rename can be skipped\n\n Keep the volume group names?'
if not read_yn(rename_msg,
waitenter=True,
suppose_yes=migrate_data.yes_flag):
if migrate_tools.verify_local_fstab():
fstab_msg = '\n The fstab file on this workstation seems to ' \
'contain device references\n using /dev/mapper ' \
'devices. The volume group names on this ' \
'workstation\n will be renamed temporarily. ' \
'/dev/mapper devices referring to logical volumes\n' \
' can create problems in this context. To avoid ' \
'this situation\n exit now and modify the ' \
'device specification to LABEL or UUID.\n\n Continue?'
if not read_yn(fstab_msg,
waitenter=True,
suppose_yes=migrate_data.yes_flag):
exit_with_msg('Exiting')
_logger.debug('Rename local volume groups to avoid conflicts.')
vgrename_res = system_tools.exec_rename_volume_groups(
migrate_data.local_volume_groups, 'FORWARD')
migrate_data.local_volume_group_rename = True
else:
_logger.debug('fstab file has no /dev/mapper devices.')
else:
_logger.debug('Not renaming the volume groups.')
_ = system_tools.reset_vg_list(migrate_data.local_volume_groups)
else:
_logger.debug('No local volume groups, no conflicts.')
#
# Generic data collection
try:
imgres, imagedata = collect_image_data(image_object)
if migrate_data.verbose_flag:
migrate_tools.show_image_data(image_object)
if imgres:
_logger.debug('Image processing succeeded.')
else:
_logger.critical(' Image processing failed.', exc_info=False)
#
if imagedata:
_logger.debug('%s passed.' % imagepath)
else:
_logger.critical(' %s failed.' % imagepath, exc_info=False)
except Exception as e:
_logger.critical(' %s failed: %s' % (imagepath, str(e)))
exit_with_msg('*** ERROR *** Problem detected during investigation of '
'the image %s: %s, exiting.' % (imagepath, str(e)))
#
# Restore volume group names.
if migrate_data.local_volume_group_rename:
_logger.debug('Restore local volume groups.')
vgrename_res = system_tools.exec_rename_volume_groups(
migrate_data.local_volume_groups, 'BACKWARD')
else:
_logger.debug('No local volume group names to restore.')
#
# passed prerequisites and changes?
prereq_passed = True
#
# Image type specific prerequisites
prereq_msg = ''
sup, msg = image_object.type_specific_prereq_test()
if sup:
migrate_tools.result_msg(msg='%s' % msg, result=True)
else:
prereq_passed = False
prereq_msg = msg
#
# Generic prerequisites verification
try:
gen_prereq, msg = image_object.generic_prereq_check()
if gen_prereq:
prereq_msg += '\n %s passed the generic preqrequisites.' % imagepath
else:
prereq_passed = False
prereq_msg += msg
#
if imgres:
prereq_msg += '\n\n %s data collection and processing succeeded.' \
% imagepath
else:
prereq_passed = False
#
if prereq_passed:
migrate_tools.result_msg(msg=prereq_msg, result=True)
if imagedata['boot_type'] == 'BIOS':
migrate_tools.result_msg(msg='\n Boot type is BIOS, '
'use launch_mode PARAVIRTUALIZED '
'(or EMULATED) at import.',
result=True)
elif imagedata['boot_type'] == 'UEFI':
migrate_tools.result_msg(msg='\n Boot type is UEFI, '
'use launch_mode NATIVE '
'(or EMULATED) at import.',
result=True)
else:
raise OciMigrateException('Something wrong checking '
'the boot type')
else:
prereq_msg += '\n\n %s processing failed, check the logfile ' \
'and/or set environment variable _OCI_UTILS_DEBUG.' \
% imagepath
raise OciMigrateException(prereq_msg)
except Exception as e:
exit_with_msg('*** ERROR *** %s' % str(e))
#
# While prerequisite check did not hit a fatal issue, there might be
# situations where upload should not proceed.
if not migrate_data.migrate_preparation:
exit_with_msg('*** ERROR *** Unable to proceed with uploading image '
'to Oracle Cloud Infrastructure: %s'
% migrate_data.migrate_non_upload_reason)
else:
migrate_tools.result_msg('Successfully verified and processed image %s '
'and is ready for upload.' % imagepath)
return 0
def a30_set_oci_region():
"""
Add a job to cloud-init config file to complete the ociregion data
at first boot.
Returns
-------
bool: True on success, False otherwise.
"""
def add_oci_region(regionscript):
"""
Update the default user name in the cloud.cfg file.
Parameters:
----------
regionscript: str
full path of the bash script.
Returns:
-------
bool: True on success, False otherwise.
"""
_logger.debug('__ Add oci region.')
try:
cloudconfig = get_config_data('cloudconfig_file')
_logger.debug('Updating cloud.cfg file %s, adding oci region '
'detection.' % cloudconfig)
except Exception as e:
_logger.error('Failed to find cloud config file '
'location: %s.' % str(e))
return False
if os.path.isfile(cloudconfig):
with open(cloudconfig, 'r') as f:
cloudcfg = yaml.load(f, Loader=yaml.SafeLoader)
region_definition = False
if type(cloudcfg) is dict:
if 'runcmd' in list(cloudcfg.keys()):
#
# runcmd present in cloud config file
run_cmd = cloudcfg['runcmd']
for yaml_key in run_cmd:
if type(yaml_key) == 'list':
for yamlval in yaml_key:
if regionscript in yamlval:
_logger.debug('%s already in '
'cloud_init' % regionscript)
region_definition = True
break
else:
if regionscript in yaml_key:
_logger.debug('%s already in '
'cloud_init' % regionscript)
region_definition = True
break
if not region_definition:
#
# the regionscript not yet defined in runcmd
run_cmd.append(regionscript)
else:
#
# runcmd not yet present in cloud config file
cloudcfg['runcmd'] = [regionscript]
with open(cloudconfig, 'w') as f:
yaml.dump(cloudcfg, f, width=50)
_logger.debug('Cloud configuration file %s successfully '
'updated.' % cloudconfig)
return True
else:
_logger.error('Invalid cloud config file.')
else:
_logger.error('Cloud config file %s does not exist.'
% cloudconfig)
return False
_logger.debug('__ Set OCI region.')
#
# get the script name
try:
oci_region_script = get_config_data('ol_os_oci_region_script')
_logger.debug('Got oci-region script name: %s' % oci_region_script)
except Exception as e:
_logger.warning('Failed to collect the oci_region_script '
'path: %s' % str(e))
return False
#
# write the oci region script code
with open(oci_region_script, 'w') as fi:
fi.writelines(ln + '\n'
for ln in get_config_data('ol_os_oci_region_bash'))
os.chmod(oci_region_script, stat.S_IRWXU)
#
# update cloud-init with runcmd command
if add_oci_region(oci_region_script):
_logger.debug('oci region successfully added.')
migrate_tools.result_msg(msg='Updated OCI region.', result=False)
return True
else:
_logger.debug('Failed to update oci region.')
return False