修改SSH端口對Oracle集群的影響

最近連續有客戶問我，如果修改SSH，會對oracle RAC有什么影響。這個問題，我也看過資料，對oracle RAC的運行是沒有影響的，但是

最近連續有客戶問我，如果修改SSH，會對Oracle RAC有什么影響。這個問題，我也看過資料，對oracle RAC的運行是沒有影響的，但是“說”是沒有力度的。

今天正好相對比較空閑，全程針對SSH進行測試，并將測試過程記錄下來，與大家分享一下。

Part I. 測試前狀態收集

1. 數據庫版本為11.2.0.4的兩節點的RAC，分別是node111g 和node211g
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options

2. 集群狀態正常
[grid@node111g ~]$ crsctl status res -t
--------------------------------------------------------------------------------
NAME TARGET STATE SERVER STATE_DETAILS
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DATA.dg
ONLINE ONLINE node111g
ONLINE ONLINE node211g
ora.DGROUP_01.dg
ONLINE ONLINE node111g
OFFLINE OFFLINE node211g
ora.FRA.dg
ONLINE ONLINE node111g
ONLINE ONLINE node211g
ora.LISTENER.lsnr
ONLINE ONLINE node111g
ONLINE ONLINE node211g
ora.LISTENER_TEST.lsnr
ONLINE ONLINE node111g
ONLINE ONLINE node211g
ora.OCR.dg
ONLINE ONLINE node111g
ONLINE ONLINE node211g
ora.VOTE3D.dg
ONLINE ONLINE node111g
OFFLINE OFFLINE node211g
ora.asm
ONLINE ONLINE node111g Started
ONLINE ONLINE node211g Started
ora.gsd
OFFLINE OFFLINE node111g
OFFLINE OFFLINE node211g
ora.net1.network
ONLINE ONLINE node111g
ONLINE ONLINE node211g
ora.ons
ONLINE ONLINE node111g
ONLINE ONLINE node211g
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.TEST_SCAN1.lsnr
1 ONLINE ONLINE node111g
ora.cvu
1 ONLINE ONLINE node211g
ora.node111g.vip
1 ONLINE ONLINE node111g
ora.node211g.vip
1 ONLINE ONLINE node211g
ora.oc4j
1 ONLINE ONLINE node211g
ora.orcl.db
1 ONLINE ONLINE node111g Open
2 ONLINE ONLINE node211g Open
ora.orcl.romi.svc
1 ONLINE ONLINE node111g
ora.orcl.test.svc
1 ONLINE ONLINE node211g
2 ONLINE ONLINE node111g
ora.scan1.vip
1 ONLINE ONLINE node111g

3. SSH配置文件，默認SSH端口是22，文件有提及，不建議修改默認值，但是?。。∥揖拖敫?，怎么辦呢？？
[root@node111g ~]# more /etc/ssh/sshd_config
# $OpenBSD: sshd_config,v 1.73 2005/12/06 22:38:28 reyk Exp $
# This is the sshd server system-wide configuration file. See
# sshd_config(5) for more information.
# This sshd was compiled with PATH=/usr/local/bin:/bin:/usr/bin
# The strategy used for options in the default sshd_config shipped with
# OpenSSH is to specify options with their default value where
# possible, but leave them commented. Uncommented options change a
# default value.
#Port 22
#Protocol 2,1
Protocol 2
#AddressFamily any
#ListenAddress 0.0.0.0
#ListenAddress ::
......
[root@node111g ~]#
[root@node211g ~]# more /etc/ssh/sshd_config
# $OpenBSD: sshd_config,v 1.73 2005/12/06 22:38:28 reyk Exp $
# This is the sshd server system-wide configuration file. See
# sshd_config(5) for more information.
# This sshd was compiled with PATH=/usr/local/bin:/bin:/usr/bin
# The strategy used for options in the default sshd_config shipped with
# OpenSSH is to specify options with their default value where
# possible, but leave them commented. Uncommented options change a
# default value.
#Port 22
#Protocol 2,1
Protocol 2
#AddressFamily any
#ListenAddress 0.0.0.0
#ListenAddress ::
# HostKey for protocol version 1
#HostKey /etc/ssh/ssh_host_key
# HostKeys for protocol version 2
#HostKey /etc/ssh/ssh_host_rsa_key
#HostKey /etc/ssh/ssh_host_dsa_key
# Lifetime and size of ephemeral version 1 server key
#KeyRegenerationInterval 1h

Part II 實際修改部分

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