CLUVFY工具（一）
如果安裝過10g以後的RAC環境，應該對這個工具並不陌生。在安裝Cluster和Database之前通常會執行runcluvfy.sh指令碼來檢查當前系統是否滿足安裝條件。
這篇介紹comp相關選項。
在安裝RAC時，由於cluvfy工具還沒有被安裝，而runcluvfy.sh將cluvfy工具的功能在shell中實現，並和安裝盤一起提供，使得使用者在資料庫和CLUSTER安裝之前就可以利用這個工具的功能。
這個工具的主要作用就是驗證系統是否滿足安裝的條件。
這個工具擁有眾多的選項，因此不可能也沒有必要詳細的描述所有的選項，如果從大類上分，這個工具可以分成兩個大類選項：comp用來驗證元件的功能；stage用來驗證部署功能。
可以透過comp –list來列出所有cluvfy工具支援驗證的元件：
bash-2.03$ cluvfy comp -list
USAGE:
cluvfy comp <component-name> <component-specific options> [-verbose]
Valid components are:
nodereach : checks reachability between nodes
nodecon : checks node connectivity
ssa : checks shared storage accessibility
space : checks space availability
sys : checks minimum system requirements
clu : checks cluster integrity
clumgr : checks cluster manager integrity
ocr : checks OCR integrity
crs : checks CRS integrity
nodeapp : checks node applications existence
admprv : checks administrative privileges
peer : compares properties with peers
其中nodereach、nodecon和sys等元件都是安裝Cluster環境必不可少的檢查選項：
bash-2.03$ cluvfy comp nodereach -n racnode1,racnode2
Verifying node reachability
Checking node reachability...
Node reachability check passed from node "racnode2".
Verification of node reachability was successful.
其中-n選項中指定節點列表，在節點列表中的逗號前後都不能包括空格，否則會報錯。
bash-2.03$ cluvfy comp nodereach -n racnode1,racnode2 -verbose
Verifying node reachability
Checking node reachability...
Check: Node reachability from node "racnode2"
Destination Node Reachable?
------------------------------------ ------------------------
racnode1 yes
racnode2 yes
Result: Node reachability check passed from node "racnode2".
Verification of node reachability was successful.
使用-verbose會得到更加詳細的資訊。
bash-2.03$ cluvfy comp nodecon -n racnode1,racnode2 -verbose
Verifying node connectivity
Checking node connectivity...
Interface information for node "racnode2"
Interface Name IP Address Subnet
------------------------------ ------------------------------ ----------------
ce0 172.25.198.223 172.25.0.0
ce0 172.25.198.225 172.25.198.0
ce1 10.0.0.2 10.0.0.0
Interface information for node "racnode1"
Interface Name IP Address Subnet
------------------------------ ------------------------------ ----------------
ce0 172.25.198.222 172.25.0.0
ce0 172.25.198.224 172.25.198.0
ce1 10.0.0.1 10.0.0.0
Check: Node connectivity of subnet "172.25.0.0"
Source Destination Connected?
------------------------------ ------------------------------ ----------------
racnode2:ce0 racnode1:ce0 yes
Result: Node connectivity check passed for subnet "172.25.0.0" with node(s) racnode2,racnode1.
Check: Node connectivity of subnet "172.25.198.0"
Source Destination Connected?
------------------------------ ------------------------------ ----------------
racnode2:ce0 racnode1:ce0 yes
Result: Node connectivity check passed for subnet "172.25.198.0" with node(s) racnode2,racnode1.
Check: Node connectivity of subnet "10.0.0.0"
Source Destination Connected?
------------------------------ ------------------------------ ----------------
racnode2:ce1 racnode1:ce1 yes
Result: Node connectivity check passed for subnet "10.0.0.0" with node(s) racnode2,racnode1.
Suitable interfaces for the private interconnect on subnet "172.25.0.0":
racnode2 ce0:172.25.198.223
racnode1 ce0:172.25.198.222
Suitable interfaces for the private interconnect on subnet "172.25.198.0":
racnode2 ce0:172.25.198.225
racnode1 ce0:172.25.198.224
Suitable interfaces for the private interconnect on subnet "10.0.0.0":
racnode2 ce1:10.0.0.2
racnode1 ce1:10.0.0.1
ERROR:
Could not find a suitable set of interfaces for VIPs.
Result: Node connectivity check failed.
Verification of node connectivity was unsuccessful on all the nodes.
其中導致監測失敗的原因是Oracle的bug，Oracle認為172.25開頭的IP地址無法作為PUBLIC地址，這個在以前安裝RAC的時候提到過很多次了。
bash-2.03$ cluvfy comp sys -n racnode1,racnode2 -p database -r 10gR2 -osdba dba
Verifying system requirement
Checking system requirements for 'database'...
Total memory check passed.
Free disk space check passed.
Swap space check passed.
System architecture check passed.
Operating system version check passed.
Operating system patch check failed for "112760-05".
Check failed on nodes:
racnode2,racnode1
Operating system patch check passed for "108993-45".
Operating system patch check failed for "112763-13".
Check failed on nodes:
racnode2,racnode1
Package existence check passed for "SUNWarc".
Package existence check passed for "SUNWbtool".
Package existence check passed for "SUNWhea".
Package existence check passed for "SUNWlibm".
Package existence check passed for "SUNWlibms".
Package existence check passed for "SUNWsprot".
Package existence check passed for "SUNWsprox".
Package existence check passed for "SUNWtoo".
Package existence check passed for "SUNWi1of".
Package existence check passed for "SUNWi1cs".
Package existence check passed for "SUNWi15cs".
Package existence check passed for "SUNWxwfnt".
Package existence check passed for "SUNWlibC".
Kernel parameter check failed for "noexec_user_stack".
Check failed on nodes:
racnode2,racnode1
Kernel parameter check passed for "SEMMNI".
Kernel parameter check passed for "SEMMNS".
Kernel parameter check passed for "SEMMSL".
Kernel parameter check passed for "SEMVMX".
Kernel parameter check passed for "SHMMAX".
Kernel parameter check passed for "SHMMIN".
Kernel parameter check passed for "SHMMNI".
Kernel parameter check passed for "SHMSEG".
Group existence check passed for "dba".
User existence check passed for "nobody".
System requirement failed for 'database'
Verification of system requirement was unsuccessful on all the nodes.
除了檢查常規的安裝檢查元件外，還可以驗證ocr、clu以及crs的完整性：
bash-2.03$ cluvfy comp clu -n racnode1,racnode2 -verbose
Verifying cluster integrity
Checking cluster integrity...
Node Name
------------------------------------
racnode1
racnode2
Cluster integrity check passed
Verification of cluster integrity was successful.
bash-2.03$ cluvfy comp ocr -n racnode1,racnode2 -verbose
Verifying OCR integrity
Checking OCR integrity...
Checking the absence of a non-clustered configuration...
All nodes free of non-clustered, local-only configurations.
Uniqueness check for OCR device passed.
Checking the version of OCR...
OCR of correct Version "2" exists.
Checking data integrity of OCR...
Data integrity check for OCR passed.
OCR integrity check passed.
Verification of OCR integrity was successful.
bash-2.03$ cluvfy comp crs -n racnode1,racnode2 -verbose
Verifying CRS integrity
Checking CRS integrity...
Checking daemon liveness...
Check: Liveness for "CRS daemon"
Node Name Running
------------------------------------ ------------------------
racnode2 yes
racnode1 yes
Result: Liveness check passed for "CRS daemon".
Checking daemon liveness...
Check: Liveness for "CSS daemon"
Node Name Running
------------------------------------ ------------------------
racnode2 yes
racnode1 yes
Result: Liveness check passed for "CSS daemon".
Checking daemon liveness...
Check: Liveness for "EVM daemon"
Node Name Running
------------------------------------ ------------------------
racnode2 yes
racnode1 yes
Result: Liveness check passed for "EVM daemon".
Liveness of all the daemons
Node Name CRS daemon CSS daemon EVM daemon
------------ ------------------------ ------------------------ ----------
racnode2 yes yes yes
racnode1 yes yes yes
Checking CRS health...
Check: Health of CRS
Node Name CRS OK?
------------------------------------ ------------------------
racnode2 yes
racnode1 yes
Result: CRS health check passed.
CRS integrity check passed.
Verification of CRS integrity was successful.
bash-2.03$ cluvfy comp nodeapp -n racnode1,racnode2 -verbose
Verifying node application existence
Checking node application existence...
Checking existence of VIP node application
Node Name Required Status Comment
------------ ------------------------ ------------------------ ----------
racnode2 yes exists passed
racnode1 yes exists passed
Result: Check passed.
Checking existence of ONS node application
Node Name Required Status Comment
------------ ------------------------ ------------------------ ----------
racnode2 no exists passed
racnode1 no exists passed
Result: Check passed.
Checking existence of GSD node application
Node Name Required Status Comment
------------ ------------------------ ------------------------ ----------
racnode2 no exists passed
racnode1 no exists passed
Result: Check passed.
利用cluvfy不僅可以檢查是否滿足安裝要求，還可以驗證元件是否工作正常。
來自 “ ITPUB部落格 ” ，連結：http://blog.itpub.net/31397003/viewspace-2132721/，如需轉載，請註明出處，否則將追究法律責任。
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