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authorRyota MIBU <r-mibu@cq.jp.nec.com>2015-11-26 23:48:06 +0900
committerRyota MIBU <r-mibu@cq.jp.nec.com>2015-12-02 00:14:07 +0900
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tree24dc64ad4ca0548d697d40f7ebd6db627f9448a4 /requirements/07-annex.rst
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change dirs to use new opnfv doc build script
Change-Id: Icfc17b1370fc111e0e9919f2f1c1d9ea8aee2702 Signed-off-by: Ryota MIBU <r-mibu@cq.jp.nec.com>
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-Annex: NFVI Faults
-=================================================
-
-Faults in the listed elements need to be immediately notified to the Consumer in
-order to perform an immediate action like live migration or switch to a hot
-standby entity. In addition, the Administrator of the host should trigger a
-maintenance action to, e.g., reboot the server or replace a defective hardware
-element.
-
-Faults can be of different severity, i.e., critical, warning, or
-info. Critical faults require immediate action as a severe degradation of the
-system has happened or is expected. Warnings indicate that the system
-performance is going down: related actions include closer (e.g. more frequent)
-monitoring of that part of the system or preparation for a cold migration to a
-backup VM. Info messages do not require any action. We also consider a type
-"maintenance", which is no real fault, but may trigger maintenance actions
-like a re-boot of the server or replacement of a faulty, but redundant HW.
-
-Faults can be gathered by, e.g., enabling SNMP and installing some open source
-tools to catch and poll SNMP. When using for example Zabbix one can also put an
-agent running on the hosts to catch any other fault. In any case of failure, the
-Administrator should be notified. The following table provides a list of high
-level faults that are considered within the scope of the Doctor project
-requiring immediate action by the Consumer.
-
-
-
-+------------------+---------------------------------------------------------------------------------------------------------------------------+------------------+-------------------+------------------------------------------------------------------------------------------+----------------------------------------------------------------------+
-| Service | Fault | Severity | How to detect? | Comment | Action to recover |
-+------------------+---------------------------------------------------------------------------------------------------------------------------+------------------+-------------------+------------------------------------------------------------------------------------------+----------------------------------------------------------------------+
-| Compute Hardware | Processor/CPU failure, CPU condition not ok | Critical | Zabbix | | Switch to hot standby |
-+ +---------------------------------------------------------------------------------------------------------------------------+------------------+-------------------+------------------------------------------------------------------------------------------+----------------------------------------------------------------------+
-| | Memory failure/Memory condition not ok | Critical | Zabbix (IPMI) | | Switch to hot standby |
-+ +---------------------------------------------------------------------------------------------------------------------------+------------------+-------------------+------------------------------------------------------------------------------------------+----------------------------------------------------------------------+
-| | Network card failure, e.g. network adapter connectivity lost | Critical | Zabbix/Ceilometer | | Switch to hot standby |
-+ +---------------------------------------------------------------------------------------------------------------------------+------------------+-------------------+------------------------------------------------------------------------------------------+----------------------------------------------------------------------+
-| | Disk crash | Info | RAID monitoring | Network storage is very redundant (e.g. RAID system) and can guarantee high availability | Inform OAM |
-+ +---------------------------------------------------------------------------------------------------------------------------+------------------+-------------------+------------------------------------------------------------------------------------------+----------------------------------------------------------------------+
-| | Storage controller | Critical | Zabbix (IPMI) | | Live migration if storage is still accessible; otherwise hot standby |
-+ +---------------------------------------------------------------------------------------------------------------------------+------------------+-------------------+------------------------------------------------------------------------------------------+----------------------------------------------------------------------+
-| | PDU/power failure, power off, server reset | Critical | Zabbix/Ceilometer | | Switch to hot standby |
-+ +---------------------------------------------------------------------------------------------------------------------------+------------------+-------------------+------------------------------------------------------------------------------------------+----------------------------------------------------------------------+
-| | Power degradation, power redundancy lost, power threshold exceeded | Warning | SNMP | | Live migration |
-+ +---------------------------------------------------------------------------------------------------------------------------+------------------+-------------------+------------------------------------------------------------------------------------------+----------------------------------------------------------------------+
-| | Chassis problem (.e.g fan degraded/failed, chassis power degraded), CPU fan problem, temperature/thermal condition not ok | Warning | SNMP | | Live migration |
-+ +---------------------------------------------------------------------------------------------------------------------------+------------------+-------------------+------------------------------------------------------------------------------------------+----------------------------------------------------------------------+
-| | Mainboard failure | Critical | Zabbix (IPMI) | | Switch to hot standby |
-+ +---------------------------------------------------------------------------------------------------------------------------+------------------+-------------------+------------------------------------------------------------------------------------------+----------------------------------------------------------------------+
-| | OS crash (e.g. kernel panic) | Critical | Zabbix | | Switch to hot standby |
-+------------------+---------------------------------------------------------------------------------------------------------------------------+------------------+-------------------+------------------------------------------------------------------------------------------+----------------------------------------------------------------------+
-| Hypervisor | System has restarted | Critical | Zabbix | | Switch to hot standby |
-+ +---------------------------------------------------------------------------------------------------------------------------+------------------+-------------------+------------------------------------------------------------------------------------------+----------------------------------------------------------------------+
-| | Hypervisor failure | Warning/Critical | Zabbix/Ceilometer | | Evacuation/switch to hot standby |
-+ +---------------------------------------------------------------------------------------------------------------------------+------------------+-------------------+------------------------------------------------------------------------------------------+----------------------------------------------------------------------+
-| | Zabbix/Ceilometer is unreachable | Warning | ? | | Live migration |
-+------------------+---------------------------------------------------------------------------------------------------------------------------+------------------+-------------------+------------------------------------------------------------------------------------------+----------------------------------------------------------------------+
-| Network | SDN/OpenFlow switch, controller degraded/failed | Critical | ? | | Switch to hot standby or reconfigure virtual network topology |
-+ +---------------------------------------------------------------------------------------------------------------------------+------------------+-------------------+------------------------------------------------------------------------------------------+----------------------------------------------------------------------+
-| | Hardware failure of physical switch/router | Warning | SNMP | Redundancy of physical infrastructure is reduced or no longer available | Live migration if possible, otherwise evacuation |
-+------------------+---------------------------------------------------------------------------------------------------------------------------+------------------+-------------------+------------------------------------------------------------------------------------------+----------------------------------------------------------------------+
-
-..
- vim: set tabstop=4 expandtab textwidth=80:
-