Legato备份informix安装文档

总的思想如下：

对于生产系统，建议回退的方法如下：
对于生产系统，数据库是最重要的部分，因此我们建议采用如下的两种数据备份方式，充分保护数据库的安全；在shutdown数据库之前，先用数据库自己的命令对全库做一次热备份；shutdown数据库以后，再做一次数据库的冷备份；最好是将数据库的冷备份cp到另外一台机器上（如果条件允许的话）或备份到带库上。
万一出现数据库不能启动的现象，首先采用用冷备份出来的数据恢复数据库。然后再采用用热备份出来的数据恢复数据库。
对于操作系统，则应该采用各个操作系统的指令先对系统做一次0级备份，出现问题，采用操作系统的指令恢复系统到操作之前的状态就可以了。

在安装legato备份软件之前要求如下：
1 首先对操作系统进行一次系统0级备份，应在次日（12月6日）0：00之前完成。
2 对informix数据库做一次0级热备份，要求应在次日（12点6日）0：00之前完成。

操作过程如下：
1 应首先在standby机器上uninstall informix数据库的ISM；具体操作命令以及过程如下：
Task 1a: Uninstall ISM Software on UNIX
If your Informix Dynamic Server contains ISM, you must delete ISM.
To uninstall ISM:
1. Log in as user informix.
2. Change to the Informix directory:
# cd $INFORMIXDIR/bin
3. Shut down the ISM daemons.
# ./ism_shutdown （在standby机器上不需要执行此命令）
Important: The ism_shutdown command shuts down the ISM daemons nsrd,
nsrexecd, nsrmmdbd, and nsrindexd. The command does not remove the ISM
executables in $INFORMIXDIR/bin, the symbolic link /nsr, or the various ISM files

jekky 回复于：2004-02-04 13:32:33

in$INFORMIXDIR/ism.
4. Verify that the daemons are shut down:
# ps -ef | grep nsr
5. Place the ISM executables to a temporary directory.
将ISM的有关执行文件转移到一个指定的文件夹。用于将来回退的时候恢复。
# mkdir ISM.TMP
# mv ism* ISM.TMP
# mv nsr* ISM.TMP
# mv mm* ISM.TMP
# mv save* ISM.TMP
# mv scanner ISM.TMP
# mv uasm ISM.TMP
# mv recover ISM.TMP
# mv ansrd ISM.TMP
6. Move the ISM catalogs to a temporary directory:
# cd $INFORMIXDIR
# mv ism ISM.BAK
7. Remove the symbolic link to the ISM catalogs:
# mv /nsr  /var/legato
8. Remove the call to ism_catalog from the $INFORMIXDIR/bin/onbar script .
我们推荐注释掉该行，如果存在的话。
9. Remove any references to ISM in the informix user environment  variable PATH.
我们推荐注释掉该行，如果存在的话。
10. Edit the $INFORMIXDIR/etc/$ONCONFIG file and comment out the following
line, if it exists:
#BAR_BSA_LIB

2 install legato networker client
将相关的文件ftp上传到/var/legato文件夹下；
要求/opt要有大于100M的硬盘空间。
1运行swinstall & 选择安装legato NetWorker的client 和man。
2 编辑该服务器的 /etc/hosts 文件，增加如下内容：
  ip      backup server name
3 在备份服务器上 vi /etc/hosts ，增加如下内容：
   ip1  server1 name
   ip2  server2 name
ip3  server name   #this is informix float IP

4 编辑需要安装软件的服务器的 /nsr/res/servers 文件，增加如下内容：
   backup server name
5 编辑服务器root用户的profile文件，在PATH环境变量中增加如下部分：
     /opt/networker/bin
6 运行一次 #. ./.profile
7 手工启动networker的进程：
  # /sbin/init.d/networker start
8 检验进程是否正常启动：
  # ps –ef|grep nsr
   如果有 nsrd和nsrexed则说明正常。
9 在备份服务器上增加如下客户端：
  server1 ,server2, server
10 在新安装软件的机器上运行如下命令：
   # nwbackup &
    手工指定 /etc/hosts文件测试文件备份是否正常。
11 运行如下命令安装networker for informix的module：
   # /var/legato/nmi_ize -i
12 Updating the $ONCONFIG File
To update the $ONCONFIG file:
1. Set the BAR_BSALIB_PATH variable in the $ONCONFIG file to
? /usr/lib/libxnmi. sl.1
Note: For some Informix servers (for example, Informix Dynamic Server version

jekky 回复于：2004-02-04 13:33:41

9.1x) the BAR_BSALIB_PATH variable does not have effect, in which case you
must make a symbolic link of libxnmi.sl.1 to ibsad001.sl. For more information, and the location of the XBSA shared library, refer to your Informix Dynamic Server
Release Notes.
2. Set the following variables in the $ONCONFIG file to the following:
? ISM_DATA_POOL DBMIData
? ISM_LOG_POOL DBMILogs
Updating the Informix User’s Profile
To update the Informix User’s profile in your informix user’s profile
<$INFORMIXDIR/.profile> add the following variables:
NSR_DATA_VOLUME_POOL=Default
NSR_LOG_VOLUME_POOL=Default
export NSR_DATA_VOLUME_POOL
export NSR_LOG_VOLUME_POOL

13
Update the sm_versions File
You must update the shared NetWorker XBSA library links because ON-Bar does not
automatically update the required version values for the shared NetWorker XBSA
library into the sysutils.bar_version table or the sm_versions file. Without the required values for NetWorker XBSA, ON-Bar commands fail and the following message is displayed:
ERROR: Version 1.0.1 of the XBSA shared library is not compatible
with version 1 of ON-Bar.
To update the bar_version table, you must update the sm_versions file.
For Informix 9.x
a. Place the database server online.
b. Connect to sysutils from dbaccess.
c. Enter the SQL insert command:
insert into bar_version values ('1', '1.0.1', 'nwbsa', '1');
d. 用select语句查询一下
select * from bar_version

14
修改/opt/informix/bin/onbar，注释掉如下内容：
#if [ $onbar_d_return -eq 0 -a $ "$1" = -b -o "$1" = -l $ -a -x ${INFORMIXDIR}/bin/ism_catalog ] ; then
#${INFORMIXDIR}/bin/ism_catalog -create_bootstrap -pool ISMData > /dev/null 2>&1
#fi

注意修改/opt/informix/etc/onconfig，注意修改如下内容：
LTAPEDEV        something      # Log tape device path
ISM_DATA_POOL  DBMIData
ISM_LOG_POOL   DBMILogs

15
用如下的命令先测试手工备份：
onbar –b rootdbs
同时打开另外一个窗口查看备份过程：
tail –f /tmp/bar_act.log

16
手工备份成功后，修改legato的脚本：
vi /opt/networker/bin/nsrdbmi
注意查看并修改如下内容：
NSR_DATA_VOLUME_POOL="Default"
NSR_LOG_VOLUME_POOL="Default"
INFORMIXDIR=/opt/informix
ONCONFIG=onconfig
PATH=$INFORMIXDIR/bin:/bin:/usr/sbin:/opt/networker/bin:/usr/opt/networker/bin:/usr/bin

然后在备份服务器上建立一个group，可以暂时命名为：cq1000 informix,
Save Set 为：INFORMIX:/cq1000/rootdbs
Command 为：nsrnmi
手工启动该group，看是否能成功备份。

jekky 回复于：2004-02-04 13:34:12

根据客户的实际情况，建立一个临时的备份策略。
在总体测试的时候，再制定永久的备份策略。

16
Uninstalling NetWorker Module for Informix
To uninstall a NetWorker Module:
1. Log in as root on the system running Dynamic Server.
2. Issue the following command to shut down the NetWorker daemons:
# nsr_shutdown
3. Issue the following command to remove NetWorker Module for Informix:
# nmi_ize -r
4. Edit the $INFORMIXDIR/etc/$ONCONFIG script and comment out the
following lines:
#BAR_BSA_LIB
#ISM_DATA_POOL DBMIData
#ISM_LOG_POOL DBMILogs
5. Restart the NetWorker daemons once the NetWorker Module software is removed.
6. Use the NetWorker Administration GUI to delete the NMIData and NMILogs
volume pools and label templates.

17
Uninstalling the NetWorker Software
Use the swremove utility command to uninstall individual NetWorker packages or all
of the NetWorker packages at the same time.
Note: Like swinstall, swremove can be run in either terminal mode or from the
graphical user interface.
To uninstall the NetWorker software:
1. Log in as root on the NetWorker computer.
2. Shut down the NetWorker daemons by running the following command:
# nsr_shutdown
3. Enter the following command at the shell prompt:
# swremove &
4. Select the NetWorker software to be removed in the Software Selection window.
5. Select Remove from the Actions window to run an analysis of the Remove
operation.
When the Status attribute displays Ready, the analysis is finished.
6. Click Logfile to check for any error or warning messages. Fix any problems before
continuing with the operation.
7. Click OK in the Remove Analysis window to proceed with the remove operation.
The Remove window appears showing the status of the removal operation.
The Status field displays Completed when the software uninstall is finished.
8. To exit from the swremove utility, click Done in the Remove window, and then
select Exit from the File menu in the Software Selection window.
After the remove operation, verify that all the files have been uninstalled from the
networker subdirectory in the /opt/networker directory.

jekky 回复于：2004-02-04 13:36:04

sdwjian

Legato备份informix安装文档