diff options
Diffstat (limited to 'roles/openshift_health_checker/openshift_checks/memory_availability.py')
-rw-r--r-- | roles/openshift_health_checker/openshift_checks/memory_availability.py | 44 |
1 files changed, 25 insertions, 19 deletions
diff --git a/roles/openshift_health_checker/openshift_checks/memory_availability.py b/roles/openshift_health_checker/openshift_checks/memory_availability.py index 28805dc37..765ba072d 100644 --- a/roles/openshift_health_checker/openshift_checks/memory_availability.py +++ b/roles/openshift_health_checker/openshift_checks/memory_availability.py @@ -1,5 +1,8 @@ -# pylint: disable=missing-docstring -from openshift_checks import OpenShiftCheck, get_var +"""Check that recommended memory is available.""" +from openshift_checks import OpenShiftCheck + +MIB = 2**20 +GIB = 2**30 class MemoryAvailability(OpenShiftCheck): @@ -11,33 +14,36 @@ class MemoryAvailability(OpenShiftCheck): # Values taken from the official installation documentation: # https://docs.openshift.org/latest/install_config/install/prerequisites.html#system-requirements recommended_memory_bytes = { - "masters": 16 * 10**9, - "nodes": 8 * 10**9, - "etcd": 20 * 10**9, + "masters": 16 * GIB, + "nodes": 8 * GIB, + "etcd": 8 * GIB, } + # https://access.redhat.com/solutions/3006511 physical RAM is partly reserved from memtotal + memtotal_adjustment = 1 * GIB - @classmethod - def is_active(cls, task_vars): + def is_active(self): """Skip hosts that do not have recommended memory requirements.""" - group_names = get_var(task_vars, "group_names", default=[]) - has_memory_recommendation = bool(set(group_names).intersection(cls.recommended_memory_bytes)) - return super(MemoryAvailability, cls).is_active(task_vars) and has_memory_recommendation + group_names = self.get_var("group_names", default=[]) + has_memory_recommendation = bool(set(group_names).intersection(self.recommended_memory_bytes)) + return super(MemoryAvailability, self).is_active() and has_memory_recommendation - def run(self, tmp, task_vars): - group_names = get_var(task_vars, "group_names") - total_memory_bytes = get_var(task_vars, "ansible_memtotal_mb") * 10**6 + def run(self): + group_names = self.get_var("group_names") + total_memory_bytes = self.get_var("ansible_memtotal_mb") * MIB - min_memory_bytes = max(self.recommended_memory_bytes.get(name, 0) for name in group_names) + recommended_min = max(self.recommended_memory_bytes.get(name, 0) for name in group_names) + configured_min = float(self.get_var("openshift_check_min_host_memory_gb", default=0)) * GIB + min_memory_bytes = configured_min or recommended_min - if total_memory_bytes < min_memory_bytes: + if total_memory_bytes + self.memtotal_adjustment < min_memory_bytes: return { 'failed': True, 'msg': ( - 'Available memory ({available:.1f} GB) ' - 'below recommended value ({recommended:.1f} GB)' + 'Available memory ({available:.1f} GiB) is too far ' + 'below recommended value ({recommended:.1f} GiB)' ).format( - available=float(total_memory_bytes) / 10**9, - recommended=float(min_memory_bytes) / 10**9, + available=float(total_memory_bytes) / GIB, + recommended=float(min_memory_bytes) / GIB, ), } |