def _test_yum_rpm_sanity(self, agent_ssh, auth_args, address):
from chroma_core.services.job_scheduler.agent_rpc import AgentException
from chroma_core.models import ServerProfile
can_update = False
try:
# Check to see if yum can or ever has gotten OS repo metadata or if base packages are
# already installed and no repos are enabled
check_yum = """
python -c "from yum import YumBase
yb = YumBase()
baselist = %s
if len([x for x in yb.doPackageLists(pkgnarrow='installed', patterns=baselist)]) >= len(baselist):
exit(0)
missing_electric_fence = not [p.name for p in yb.pkgSack.returnNewestByNameArch() if p.name == 'ElectricFence']
exit(missing_electric_fence)"
""" % [x for x in ServerProfile().base_packages]
rc, _, _ = try_ssh_cmd(agent_ssh, auth_args, check_yum)
if rc == 0:
can_update = True
else:
job_log.error(
"Failed configuration check on '%s': Unable to access any yum mirrors"
% address)
except AgentException:
job_log.exception(
"Exception thrown while trying to invoke agent on '%s':" %
address)
return False, False
return can_update
def _test_reverse_ping(self, agent_ssh, auth_args, address,
manager_hostname):
from chroma_core.services.job_scheduler.agent_rpc import AgentException
try:
# Test resolution/ping from server back to manager
rc, out, err = try_ssh_cmd(agent_ssh, auth_args,
"ping -c 1 %s" % manager_hostname)
except AgentException:
job_log.exception(
"Exception thrown while trying to invoke agent on '%s':" %
address)
return False, False
if rc == 0:
# Can resolve, can ping
return True, True
elif rc == 1:
# Can resolve, cannot ping
job_log.error("Failed configuration check on '%s': Can't ping %s" %
(address, manager_hostname))
return True, False
else:
# Cannot resolve, cannot ping
job_log.error(
"Failed configuration check on '%s': Can't resolve %s" %
(address, manager_hostname))
return False, False
def _test_yum_sanity(self, agent_ssh, auth_args, address):
from chroma_core.services.job_scheduler.agent_rpc import AgentException
can_update = False
try:
# Check to see if yum can or ever has gotten OS repo metadata
check_yum = """
python -c "from yum import YumBase
yb = YumBase()
missing_electric_fence = not [p.name for p in yb.pkgSack.returnNewestByNameArch() if p.name == 'ElectricFence']
exit(missing_electric_fence)"
"""
rc, out, err = self._try_ssh_cmd(agent_ssh, auth_args, check_yum)
if rc == 0:
can_update = True
else:
job_log.error(
"Failed configuration check on '%s': Unable to access any yum mirrors"
% address)
except AgentException:
job_log.exception(
"Exception thrown while trying to invoke agent on '%s':" %
address)
return False, False
return can_update
def _test_openssl(self, agent_ssh, auth_args, address):
from chroma_core.services.job_scheduler.agent_rpc import AgentException
try:
rc, out, err = try_ssh_cmd(agent_ssh, auth_args, "openssl version -a")
except AgentException:
job_log.exception("Exception thrown while trying to invoke agent on '%s':" % address)
return False
return not rc
def _test_hostname(self, agent_ssh, auth_args, address, resolved_address):
from chroma_core.services.job_scheduler.agent_rpc import AgentException
try:
# Check that the system hostname:
# a) resolves
# b) does not resolve to a loopback address
rc, out, err = self._try_ssh_cmd(
agent_ssh, auth_args,
"python -c 'import socket; print socket.gethostbyname(socket.gethostname())'"
)
hostname_resolution = out.rstrip()
except AgentException:
job_log.exception(
"Exception thrown while trying to invoke agent on '%s':" %
address)
else:
if rc != 0:
job_log.error(
"Failed configuration check on '%s': hostname does not resolve (%s)"
% (address, err))
return False, False, False
if hostname_resolution.startswith('127'):
job_log.error(
"Failed configuration check on '%s': hostname resolves to a loopback address (%s)"
% (address, hostname_resolution))
return False, False, False
try:
rc, out, err = self._try_ssh_cmd(
agent_ssh, auth_args,
"python -c 'import socket; print socket.getfqdn()'")
assert rc == 0, "failed to get fqdn on %s: %s" % (address, err)
fqdn = out.rstrip()
except (AssertionError, AgentException):
job_log.exception(
"Exception thrown while trying to invoke agent on '%s':" %
address)
return False, False, False
try:
resolved_fqdn = socket.gethostbyname(fqdn)
except socket.gaierror:
job_log.error(
"Failed configuration check on '%s': can't resolve self-reported fqdn '%s'"
% (address, fqdn))
return True, False, False
if resolved_fqdn != resolved_address:
job_log.error(
"Failed configuration check on '%s': self-reported fqdn resolution '%s' doesn't match address resolution"
% (address, fqdn))
return True, True, False
# Everything's OK (we hope!)
return True, True, True
