Thanks for the prompt feedback. This [*] is the output of "openstack hypervisor show cld-blu-01.cloud.pd.infn.it" Let me also add that if I restart openstack-nova-compute on the hypervisor, then "nova host-describe" shows the right information for a few seconds: [root@cld-ctrl-01 ~]# nova host-describe cld-blu-01.cloud.pd.infn.it +-----------------------------+----------------------------------+-----+-----------+---------+ | HOST | PROJECT | cpu | memory_mb | disk_gb | +-----------------------------+----------------------------------+-----+-----------+---------+ | cld-blu-01.cloud.pd.infn.it | (total) | 8 | 32722 | 241 | | cld-blu-01.cloud.pd.infn.it | (used_now) | 19 | 39424 | 95 | | cld-blu-01.cloud.pd.infn.it | (used_max) | 19 | 38912 | 95 | | cld-blu-01.cloud.pd.infn.it | b08eede75d5e4be4b0fe21e68fa9c688 | 1 | 2048 | 20 | | cld-blu-01.cloud.pd.infn.it | 7890b3e262264529a19f9743cf2f14bc | 16 | 32768 | 50 | | cld-blu-01.cloud.pd.infn.it | 4d8187cffa6a4085ad4a357b8a5afc03 | 2 | 4096 | 25 | +-----------------------------+----------------------------------+-----+-----------+---------+ but after a while it goes back publishing 16256 MB as used_now Thanks, Massimo [*] # openstack hypervisor show cld-blu-01.cloud.pd.infn.it +----------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Field | Value | +----------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | aggregates | [u'Unipd-AdminTesting-Unipd', u'Unipd-HPC-Physics', u'Unipd-model-glasses---DISC', u'Unipd-DECAMP', u'Unipd-Biodiversity-Macro-biomes', u'Unipd- | | | CMB4PrimordialNonGaussianity', u'Unipd-Links-in-Channel', u'Unipd-TC4SAP', u'Unipd-Diabetes_Risk', u'Unipd-LabTrasporti', u'Unipd-Hydrological_DA', u'Unipd- | | | Smart_Enterprise_in_Cloud', u'Unipd-DEM_Sim_ICEA', u'Unipd-Plasmonics', u'Unipd-QuBiMM', u'Unipd-MedComp', u'Unipd-BigDataComputingCourse', u'Unipd-DSB---Sci.-Biomed', u | | | 'Unipd-Notion', u'Unipd-The_role_of_trade-offs_in_competitive_ecosystems', u'Unipd-MMS_Cloud', u'Unipd-SID2016', u'Unipd-QuantumFuture', u'Unipd-Link_Translocation-DFA', | | | u'Unipd-Hopping_Transport_in_Lithium_Niobate', u'Unipd-Negapedia', u'Unipd-SIGNET-ns3', u'Unipd-SIGNET-MATLAB', u'Unipd-QST', u'Unipd-AbinitioTransport', u'Unipd- | | | CalcStat', u'Unipd-PhysicsOfData-students', u'Unipd-DiSePaM', u'Unipd-Few-mode-optical-fibers', u'Unipd-cleva'] | | cpu_info | {"vendor": "Intel", "model": "SandyBridge-IBRS", "arch": "x86_64", "features": ["pge", "avx", "xsaveopt", "clflush", "sep", "syscall", "tsc-deadline", "dtes64", "stibp", | | | "msr", "xsave", "vmx", "xtpr", "cmov", "ssse3", "est", "pat", "monitor", "smx", "pbe", "lm", "tsc", "nx", "fxsr", "tm", "sse4.1", "pae", "sse4.2", "pclmuldq", "cx16", | | | "pcid", "vme", "mmx", "osxsave", "cx8", "mce", "de", "rdtscp", "ht", "dca", "lahf_lm", "pdcm", "mca", "pdpe1gb", "apic", "sse", "pse", "ds", "invtsc", "pni", "tm2", | | | "aes", "sse2", "ss", "ds_cpl", "arat", "acpi", "spec-ctrl", "fpu", "ssbd", "pse36", "mtrr", "popcnt", "x2apic"], "topology": {"cores": 4, "cells": 2, "threads": 1, | | | "sockets": 1}} | | current_workload | 0 | | disk_available_least | 124 | | free_disk_gb | 146 | | free_ram_mb | -6702 | | host_ip | 192.168.60.150 | | host_time | 11:56:28 | | hypervisor_hostname | cld-blu-01.cloud.pd.infn.it | | hypervisor_type | QEMU | | hypervisor_version | 2010000 | | id | 132 | | load_average | 0.11, 0.19, 0.21 | | local_gb | 241 | | local_gb_used | 23 | | memory_mb | 32722 | | memory_mb_used | 16255 | | running_vms | 4 | | service_host | cld-blu-01.cloud.pd.infn.it | | service_id | 171 | | state | up | | status | enabled | | uptime | 85 days, 34 min | | users | 1 | | vcpus | 8 | | vcpus_used | 19 | +----------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ [root@cld-ctrl-01 ~]# On Wed, Feb 27, 2019 at 11:47 AM Sean Mooney <smooney@redhat.com> wrote:
On Wed, 2019-02-27 at 09:33 +0100, Massimo Sgaravatto wrote:
In the dashboard of my OpenStack Ocata cloud I see that the reported memory usage is wrong for the hypervisors. As far as I understand that information should correspond to the "used_now" field of the "nova host-describe" nova host-describe has been removed in later version of nova. command. And indeed considering an hypervisor:
# nova host-describe cld-blu-01.cloud.pd.infn.it
+-----------------------------+----------------------------------+-----+-----------+---------+
| HOST | PROJECT | cpu | memory_mb | disk_gb |
+-----------------------------+----------------------------------+-----+-----------+---------+
| cld-blu-01.cloud.pd.infn.it | (total) | 8 | 32722 | 241 | | cld-blu-01.cloud.pd.infn.it | (used_now) | 19 | 16259 | 23 | | cld-blu-01.cloud.pd.infn.it | (used_max) | 19 | 38912 | 95 | | cld-blu-01.cloud.pd.infn.it | b08eede75d5e4be4b0fe21e68fa9c688 | 1 | 2048 | 20 | | cld-blu-01.cloud.pd.infn.it | 7890b3e262264529a19f9743cf2f14bc | 16 | 32768 | 50 | | cld-blu-01.cloud.pd.infn.it | 4d8187cffa6a4085ad4a357b8a5afc03 | 2 | 4096 | 25 |
+-----------------------------+----------------------------------+-----+-----------+---------+
So for the memory it reports 16259 for used_now, while as far as far I
by the hypervisor
Am I missing something ?
understand it should be 38912 + the memory used the hypervisors api's memory_mb_used is (reserved memory + total of all memory associtate with instance on the host). i would have expected used_now to reflect that. what does "openstack hypervisor show cld-blu-01.cloud.pd.infn.it" print.
Thanks, Massimo