def refresh_slice_vinit(self):
code=self.initscript
sliver_initscript="/vservers/%s/etc/rc.d/init.d/vinit.slice"%self.name
if tools.replace_file_with_string(sliver_initscript,code,remove_if_empty=True,chmod=0755):
if code:
logger.log("vsliver_vs: %s: Installed new initscript in %s"%(self.name,sliver_initscript))
if self.is_running():
# Only need to rerun the initscript if the vserver is
# already running. If the vserver isn't running, then the
# initscript will automatically be started by
# /etc/rc.d/vinit when the vserver is started.
self.rerun_slice_vinit()
else:
logger.log("vsliver_vs: %s: Removed obsolete initscript %s"%(self.name,sliver_initscript))
def refresh_slice_vinit(self):
code=self.initscript
sliver_initscript="/vservers/%s/etc/rc.d/init.d/vinit.slice"%self.name
if tools.replace_file_with_string(sliver_initscript,code,remove_if_empty=True,chmod=0755):
if code:
logger.log("vsliver_vs: %s: Installed new initscript in %s"%(self.name,sliver_initscript))
if self.is_running():
# Only need to rerun the initscript if the vserver is
# already running. If the vserver isn't running, then the
# initscript will automatically be started by
# /etc/rc.d/vinit when the vserver is started.
self.rerun_slice_vinit()
else:
logger.log("vsliver_vs: %s: Removed obsolete initscript %s"%(self.name,sliver_initscript))
def install_and_enable_vinit (self):
vinit_source="/usr/share/NodeManager/sliver-initscripts/vinit"
vinit_script="/vservers/%s/etc/rc.d/init.d/vinit"%self.name
rc3_link="/vservers/%s/etc/rc.d/rc3.d/S99vinit"%self.name
rc3_target="../init.d/vinit"
# install in sliver
code=file(vinit_source).read()
if tools.replace_file_with_string(vinit_script,code,chmod=0755):
logger.log("vsliver_vs: %s: installed generic vinit rc script"%self.name)
# create symlink for runlevel 3
if not os.path.islink(rc3_link):
try:
logger.log("vsliver_vs: %s: creating runlevel3 symlink %s"%(self.name,rc3_link))
os.symlink(rc3_target,rc3_link)
except:
logger.log_exc("vsliver_vs: %s: failed to create runlevel3 symlink %s"%rc3_link)
def manage_hmac(plc, sliver):
hmac = find_tag(sliver, 'hmac')
if not hmac:
# let python do its thing
random.seed()
d = [random.choice(string.letters) for x in xrange(32)]
hmac = "".join(d)
SetSliverTag(plc, sliver['name'], 'hmac', hmac)
logger.log("sliverauth: %s: setting hmac" % sliver['name'])
path = '/vservers/%s/etc/planetlab' % sliver['name']
if os.path.exists(path):
keyfile = '%s/key' % path
if (tools.replace_file_with_string(keyfile, hmac, chmod=0400)):
logger.log("sliverauth: (over)wrote hmac into %s " % keyfile)
def install_and_enable_vinit (self):
vinit_source="/usr/share/NodeManager/sliver-initscripts/vinit"
vinit_script="/vservers/%s/etc/rc.d/init.d/vinit"%self.name
rc3_link="/vservers/%s/etc/rc.d/rc3.d/S99vinit"%self.name
rc3_target="../init.d/vinit"
# install in sliver
code=file(vinit_source).read()
if tools.replace_file_with_string(vinit_script,code,chmod=0755):
logger.log("vsliver_vs: %s: installed generic vinit rc script"%self.name)
# create symlink for runlevel 3
if not os.path.islink(rc3_link):
try:
logger.log("vsliver_vs: %s: creating runlevel3 symlink %s"%(self.name,rc3_link))
os.symlink(rc3_target,rc3_link)
except:
logger.log_exc("vsliver_vs: %s: failed to create runlevel3 symlink %s"%rc3_link)
def manage_hmac (plc, sliver):
hmac = find_tag (sliver, 'hmac')
if not hmac:
# let python do its thing
random.seed()
d = [random.choice(string.letters) for x in xrange(32)]
hmac = "".join(d)
SetSliverTag(plc,sliver['name'],'hmac',hmac)
logger.log("sliverauth: %s: setting hmac" % sliver['name'])
path = '/vservers/%s/etc/planetlab' % sliver['name']
if os.path.exists(path):
keyfile = '%s/key' % path
if (tools.replace_file_with_string(keyfile,hmac,chmod=0400)):
logger.log ("sliverauth: (over)wrote hmac into %s " % keyfile)
def install_and_enable_vinit_for_init(self):
"""
suitable for init-based VMs
"""
vinit_source = "/usr/share/NodeManager/sliver-initscripts/vinit"
vinit_script = "/vservers/%s/etc/rc.d/init.d/vinit" % self.name
enable_link = "/vservers/%s/etc/rc.d/rc3.d/S99vinit" % self.name
enable_target = "../init.d/vinit"
# install in sliver
with open(vinit_source) as f:
code = f.read()
if tools.replace_file_with_string(vinit_script, code, chmod=0o755):
logger.log("Initscript: %s: installed generic vinit rc script" % self.name)
# create symlink for runlevel 3
if not os.path.islink(enable_link):
try:
logger.log("Initscript: %s: creating runlevel3 symlink %s" % (self.name, enable_link))
os.symlink(enable_target, enable_link)
except:
logger.log_exc("Initscript failed to create runlevel3 symlink %s" % enable_link, name=self.name)
def configure(self, rec):
# install or remove the slice inistscript, as instructed by the initscript tag
new_initscript = rec['initscript']
if new_initscript == self.initscript:
return
logger.log("initscript.configure {}".format(self.name))
self.initscript = new_initscript
code = self.initscript
sliver_initscript = "/vservers/%s/etc/rc.d/init.d/vinit.slice" % self.name
if tools.replace_file_with_string(sliver_initscript, code, remove_if_empty=True, chmod=0o755):
if code:
logger.log("Initscript: %s: Installed new initscript in %s" % (self.name, sliver_initscript))
if self.is_running():
# Only need to rerun the initscript if the vserver is
# already running. If the vserver isn't running, then the
# initscript will automatically be started by
# /etc/rc.d/vinit when the vserver is started.
self.rerun_slice_vinit()
else:
logger.log("Initscript: %s: Removed obsolete initscript %s" % (self.name, sliver_initscript))
def install_and_enable_vinit_for_systemd(self):
"""
suitable for systemd-based VMs
"""
##########
########## initscripts : current status - march 2015
##########
#
# the initscripts business worked smoothly up to f18 inclusive
# with f20 and the apparition of machinectl, things started to
# behave really weird
#
# so starting with f20, after having tried pretty hard to get this right,
# but to no success obviously, and in order to stay on the safe side
# of the force, I am turning off the initscript machinery completely
# that is to say: the vinit.service does not get installed at all
#
if os.path.isfile('/usr/bin/machinectl'):
logger.log("WARNING: initscripts are not supported anymore in nodes that have machinectl")
return
vinit_source = "/usr/share/NodeManager/sliver-systemd/vinit.service"
vinit_unit_file = "/vservers/%s/usr/lib/systemd/system/vinit.service" % self.name
enable_link = "/vservers/%s/etc/systemd/system/multi-user.target.wants/vinit.service" % self.name
enable_target = "/usr/lib/systemd/system/vinit.service"
# install in sliver
with open(vinit_source) as f:
code = f.read()
if tools.replace_file_with_string(vinit_unit_file, code, chmod=0o755):
logger.log("Initscript: %s: installed vinit.service unit file" % self.name)
# create symlink for enabling this unit
if not os.path.islink(enable_link):
try:
logger.log("Initscript: %s: creating enabling symlink %s" % (self.name, enable_link))
os.symlink(enable_target, enable_link)
except:
logger.log_exc("Initscript failed to create enabling symlink %s" % enable_link, name=name)
def GetSlivers(data, conf=None, plc=None):
if 'accounts' not in data:
logger.log_missing_data("specialaccounts.GetSlivers", 'accounts')
return
for account in data['accounts']:
name = account['name']
new_keys = account['keys']
logger.log('specialaccounts: dealing with account %s' % name)
# look up account name, which must exist
pw_info = pwd.getpwnam(name)
uid = pw_info[2]
gid = pw_info[3]
pw_dir = pw_info[5]
# populate account's .ssh/authorized_keys file
dot_ssh = os.path.join(pw_dir, '.ssh') #~/.ssh
if not os.access(dot_ssh, os.F_OK): os.mkdir(dot_ssh) #mkdir ~/.ssh
auth_keys = os.path.join(dot_ssh,
'authorized_keys') #=~/.ssh/authorized_keys
# catenate all keys in string, add newlines just in case (looks like keys already have this, but)
auth_keys_contents = '\n'.join(new_keys) + '\n'
changes = tools.replace_file_with_string(auth_keys, auth_keys_contents)
if changes:
logger.log("specialaccounts: keys file changed: %s" % auth_keys)
# always set permissions properly
os.chmod(dot_ssh, 0700)
os.chown(dot_ssh, uid, gid)
os.chmod(auth_keys, 0600)
os.chown(auth_keys, uid, gid)
logger.log('specialaccounts: installed ssh keys for %s' % name)
def GetSlivers(data, conf = None, plc = None):
if 'accounts' not in data:
logger.log_missing_data("specialaccounts.GetSlivers",'accounts')
return
for account in data['accounts']:
name = account['name']
new_keys = account['keys']
logger.log('specialaccounts: dealing with account %s'%name)
# look up account name, which must exist
pw_info = pwd.getpwnam(name)
uid = pw_info[2]
gid = pw_info[3]
pw_dir = pw_info[5]
# populate account's .ssh/authorized_keys file
dot_ssh = os.path.join(pw_dir,'.ssh')
if not os.access(dot_ssh, os.F_OK): os.mkdir(dot_ssh)
auth_keys = os.path.join(dot_ssh,'authorized_keys')
# catenate all keys in string, add newlines just in case (looks like keys already have this, but)
auth_keys_contents = '\n'.join(new_keys)+'\n'
changes = tools.replace_file_with_string(auth_keys,auth_keys_contents)
if changes:
logger.log("specialaccounts: keys file changed: %s" % auth_keys)
# always set permissions properly
os.chmod(dot_ssh, 0700)
os.chown(dot_ssh, uid,gid)
os.chmod(auth_keys, 0600)
os.chown(auth_keys, uid,gid)
logger.log('specialaccounts: installed ssh keys for %s' % name)
def GetSlivers(data, conf=None, plc=None):
logger.log("omf_resctl.GetSlivers")
if 'accounts' not in data:
logger.log_missing_data("omf_resctl.GetSlivers", 'accounts')
return
try:
xmpp_server = data['xmpp']['server']
if not xmpp_server:
# we have the key but no value, just as bad
raise Exception
except:
# disabled feature - bailing out
logger.log(
"omf_resctl: PLC_OMF config unsufficient (not enabled, or no server set), -- plugin exiting"
)
return
hostname = data['hostname']
def is_omf_friendly(sliver):
for chunk in sliver['attributes']:
if chunk['tagname'] == 'omf_control': return True
for sliver in data['slivers']:
# skip non OMF-friendly slices
if not is_omf_friendly(sliver): continue
slicename = sliver['name']
expires = str(sliver['expires'])
yaml_template = config_ple_template
yaml_contents = yaml_template\
.replace('_xmpp_server_',xmpp_server)\
.replace('_slicename_',slicename)\
.replace('_hostname_',hostname)\
.replace('_expires_',expires)
yaml_full_path = "/vservers/%s/%s" % (slicename, yaml_slice_path)
yaml_full_dir = os.path.dirname(yaml_full_path)
if not os.path.isdir(yaml_full_dir):
try:
os.makedirs(yaml_full_dir)
except OSError:
pass
config_changes = tools.replace_file_with_string(
yaml_full_path, yaml_contents)
logger.log("yaml_contents length=%d, config_changes=%r" %
(len(yaml_contents), config_changes))
# would make sense to also check for changes to authorized_keys
# would require saving a copy of that some place for comparison
# xxx todo
keys_changes = False
if config_changes or keys_changes:
# instead of restarting the service we call a companion script
try:
fetch_trigger_script_if_missing(slicename)
# the trigger script actually needs to be run in the slice context of course
# in addition there is a requirement to pretend we run as a login shell
# hence sudo -i
slice_command = ["sudo", "-i", omf_rc_trigger_script]
to_run = tools.command_in_slice(slicename, slice_command)
log_filename = "/vservers/%s/%s" % (slicename,
omf_rc_trigger_log)
logger.log("omf_resctl: starting %s" % to_run)
logger.log("redirected into %s" % log_filename)
logger.log("*not* waiting for completion..")
with open(log_filename, "a") as log_file:
subprocess.Popen(to_run,
stdout=log_file,
stderr=subprocess.STDOUT)
# a first version tried to 'communicate' on that subprocess instance
# but that tended to create deadlocks in some cases
# causing nodemanager to stall...
# we're only losing the child's retcod, no big deal
except:
import traceback
traceback.print_exc()
logger.log_exc("omf_resctl: WARNING: Could not call trigger script %s"%\
omf_rc_trigger_script, name=slicename)
else:
logger.log("omf_resctl: %s: omf_control'ed sliver has no change" %
slicename)
def GetSlivers(data, conf = None, plc = None):
logger.log("omf_resctl.GetSlivers")
if 'accounts' not in data:
logger.log_missing_data("omf_resctl.GetSlivers", 'accounts')
return
try:
xmpp_server=data['xmpp']['server']
if not xmpp_server:
# we have the key but no value, just as bad
raise Exception
except:
# disabled feature - bailing out
logger.log("omf_resctl: PLC_OMF config unsufficient (not enabled, or no server set), -- plugin exiting")
return
hostname = data['hostname']
def is_omf_friendly (sliver):
for chunk in sliver['attributes']:
if chunk['tagname']=='omf_control': return True
for sliver in data['slivers']:
# skip non OMF-friendly slices
if not is_omf_friendly (sliver): continue
slicename=sliver['name']
expires=str(sliver['expires'])
yaml_template = config_ple_template
yaml_contents = yaml_template\
.replace('_xmpp_server_', xmpp_server)\
.replace('_slicename_', slicename)\
.replace('_hostname_', hostname)\
.replace('_expires_', expires)
yaml_full_path="/vservers/%s/%s"%(slicename, yaml_slice_path)
yaml_full_dir=os.path.dirname(yaml_full_path)
if not os.path.isdir(yaml_full_dir):
try: os.makedirs(yaml_full_dir)
except OSError: pass
config_changes=tools.replace_file_with_string(yaml_full_path, yaml_contents)
logger.log("yaml_contents length=%d, config_changes=%r"%(len(yaml_contents), config_changes))
# would make sense to also check for changes to authorized_keys
# would require saving a copy of that some place for comparison
# xxx todo
keys_changes = False
if config_changes or keys_changes:
# instead of restarting the service we call a companion script
try:
fetch_trigger_script_if_missing (slicename)
# the trigger script actually needs to be run in the slice context of course
# in addition there is a requirement to pretend we run as a login shell
# hence sudo -i
slice_command = [ "sudo", "-i", omf_rc_trigger_script ]
to_run = tools.command_in_slice (slicename, slice_command)
log_filename = "/vservers/%s/%s"%(slicename, omf_rc_trigger_log)
logger.log("omf_resctl: starting %s"%to_run)
logger.log("redirected into %s"%log_filename)
logger.log("*not* waiting for completion..")
with open(log_filename, "a") as log_file:
subprocess.Popen(to_run, stdout=log_file, stderr=subprocess.STDOUT)
# a first version tried to 'communicate' on that subprocess instance
# but that tended to create deadlocks in some cases
# causing nodemanager to stall...
# we're only losing the child's retcod, no big deal
except:
import traceback
traceback.print_exc()
logger.log_exc("omf_resctl: WARNING: Could not call trigger script %s"%\
omf_rc_trigger_script, name=slicename)
else:
logger.log("omf_resctl: %s: omf_control'ed sliver has no change" % slicename)
def GetSlivers(data, conf=None, plc=None):
if "accounts" not in data:
logger.log_missing_data("omf_resctl.GetSlivers", "accounts")
return
try:
xmpp_server = data["xmpp"]["server"]
if not xmpp_server:
# we have the key but no value, just as bad
raise Exception
except:
# disabled feature - bailing out
# xxx might need to clean up more deeply..
logger.log(
"PLC config unsufficient (not enabled, or no server set), see the PLC_OMF category -- plugin exiting"
)
return
# as hrn is set only at AddNode-time, upgraded myplcs might still miss this
# clue: just overwrite the hostname of all nodes
# for node in GetNodes(): UpdateNode(node['node_id'],{'hostname':node['hostname']})
try:
node_hrn = data["hrn"]
if not node_hrn:
raise Exception
except:
logger.log("Failed to read hrn from GetSlivers, using 'default' - *please upgrade PLCAPI*")
node_hrn = "default # Failed to read hrn from GetSlivers, please upgrade PLCAPI"
for sliver in data["slivers"]:
name = sliver["name"]
sliver_pub_key_dir = os.path.join("/home", name, ".ssh/")
sliver_private_key = os.path.join(sliver_pub_key_dir, "id_rsa")
for chunk in sliver["attributes"]:
if chunk["tagname"] == "omf_control":
# scan all versions of omf-resctl
etc_path = "/vservers/%s/etc/" % name
pattern = etc_path + "omf-resctl-*/omf-resctl.yaml.in"
templates = glob.glob(pattern)
if not templates:
logger.log(
"WARNING: omf_resctl plugin, no template found for slice %s using pattern %s" % (name, pattern)
)
continue
for template in templates:
# remove the .in extension
yaml = template[:-3]
# figure service name as subdir under etc/
service_name = os.path.split(template.replace(etc_path, ""))[0]
# read template and replace
template_contents = file(template).read()
yaml_contents = (
template_contents.replace("@XMPP_SERVER@", xmpp_server)
.replace("@NODE_HRN@", node_hrn)
.replace("@SLICE_NAME@", name)
.replace("@SLIVER_PRIVATE_KEY@", sliver_private_key)
.replace("@SLIVER_PUB_KEY_DIR@", sliver_pub_key_dir)
)
changes = tools.replace_file_with_string(yaml, yaml_contents)
logger.log("yaml_contents length=%d, changes=%r" % (len(yaml_contents), changes))
if changes:
sp = subprocess.Popen(
["vserver", name, "exec", "service", service_name, "restart"],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
)
(output, retcod) = sp.communicate()
logger.log("omf_resctl: %s: restarted resource controller (retcod=%r)" % (name, retcod))
logger.log("omf_resctl: got output\n%s" % output)
else:
logger.log("omf_resctl: %s: omf_control'ed sliver has no change" % name)
