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"""
A check to run relevant diagnostics via `oc adm diagnostics`.
"""
import os
from openshift_checks import OpenShiftCheck, OpenShiftCheckException
DIAGNOSTIC_LIST = (
"AggregatedLogging ClusterRegistry ClusterRoleBindings ClusterRoles "
"ClusterRouter DiagnosticPod NetworkCheck"
).split()
class DiagnosticCheck(OpenShiftCheck):
"""A check to run relevant diagnostics via `oc adm diagnostics`."""
name = "diagnostics"
tags = ["health"]
def is_active(self):
return super(DiagnosticCheck, self).is_active() and self.is_first_master()
def run(self):
if self.exec_diagnostic("ConfigContexts"):
# only run the other diagnostics if that one succeeds (otherwise, all will fail)
diagnostics = self.get_var("openshift_check_diagnostics", default=DIAGNOSTIC_LIST)
for diagnostic in self.normalize(diagnostics):
self.exec_diagnostic(diagnostic)
return {}
def exec_diagnostic(self, diagnostic):
"""
Execute an 'oc adm diagnostics' command on the remote host.
Raises OcNotFound or registers OcDiagFailed.
Returns True on success or False on failure (non-zero rc).
"""
config_base = self.get_var("openshift.common.config_base")
args = {
"config_file": os.path.join(config_base, "master", "admin.kubeconfig"),
"cmd": "adm diagnostics",
"extra_args": [diagnostic],
}
result = self.execute_module("ocutil", args, save_as_name=diagnostic + ".failure.json")
self.register_file(diagnostic + ".txt", result['result'])
if result.get("failed"):
if result['result'] == '[Errno 2] No such file or directory':
raise OpenShiftCheckException(
"OcNotFound",
"This host is supposed to be a master but does not have the `oc` command where expected.\n"
"Has an installation been run on this host yet?"
)
self.register_failure(OpenShiftCheckException(
'OcDiagFailed',
'The {diag} diagnostic reported an error:\n'
'{error}'.format(diag=diagnostic, error=result['result'])
))
return False
return True
|
