Linux-DNS配置 安装Oracle 11g RAC
Linux-DNS服务器的IP地址是192.168.2.98,需要配置的DNS地址是192.168.2.212,这个IP地址必须没有人使用,不然安装grid会报错
Linux-DNS服务器的IP地址是192.168.2.98
需要配置的DNS地址是192.168.2.212,这个IP地址必须没有人使用,不然安装grid会报错
1、安装以下rpm包
bind-9.3.6-4.P1.el5.x86_64.rpm
bind-chroot-9.3.6-4.P1.el5.x86_64.rpm
caching-nameserver-9.3.6-4.P1.el5.x86_64.rpm
2、复制named.caching-nameserver.conf文件为named.conf,并修改named.conf文件
[root@bjgtj1 opt]# cd /var/named/chroot/etc/
[root@bjgtj1 etc] cp -p named.caching-nameserver.conf named.conf (-p参数会将权限也复制过来)
[root@bjgtj1 etc] vi named.conf
将以下5处的内容修改成any
listen-on port 53 { any; };
allow-query { any; };
allow-query-cache { any; };
match-clients { any; };
match-destinations { any; };
3、定义zone文件
[root@bjgtj1 etc]# vi named.rfc1912.zones
在文件的最下面添加以下内容:
-----配置正向解析zone
zone "linuxidc.com" IN {
type master;
file "rac.linuxidc.zone";
allow-update { none; };
};
-----配置反向解析zone
zone "2.168.192.in-addr.arpa" IN {
type master;
file "rac.linuxidc.local";
allow-update { none; };
};
4、复制模板文件成数据文件
[root@bjgtj1 etc]# cd /var/named/chroot/var/named/
[root@bjgtj1 named]# cp -p localhost.zone rac.linuxidc.zone
[root@bjgtj1 named]# cp -p named.local rac.linuxidc.local
[root@bjgtj1 named]# vi rac.linuxidc.zone
$TTL 86400
@ IN SOA @ root (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
IN NS linuxidc.com
rac-scan IN A 192.168.2.212
-------------------------------------------------------
[root@bjgtj1 named]#vi rac.linuxidc.local
$TTL 86400
@ IN SOA localhost. root.localhost. (
1997022700 ; Serial
28800 ; Refresh
14400 ; Retry
3600000 ; Expire
86400 ) ; Minimum
IN NS linuxidc.
212 IN PTR rac-scan.linuxidc.com.
5、验证DNS配置
登录192.168.2.208,,在hosts文件里添加 192.168.2.212 rac-scan.linuxidc.com rac-scan
vi /etc/hosts
127.0.0.1 localhost
::1 localhost6.localdomain6 localhost6
#Public Network
192.168.2.208 db1
192.168.2.209 db2
#Private Interconnect
10.0.1.55 db1-priv
10.0.1.56 db2-priv
#Public Virtual ip
192.168.2.210 db1-vip
192.168.2.211 db2-vip
192.168.2.212 rac-scan.linuxidc.com rac-scan
(安装grid时候clustername输入rac-scan scan-name输入rac-scan.linuxidc.com)
编辑resolv.conf文件,添加内容:
vi /etc/resolv.conf
search rac-scan.linuxidc.com
nameserver 192.168.2.98
登录192.168.2.209,在hosts文件里添加 192.168.2.212 rac-scan.linuxidc.com rac-scan
编辑resolv.conf文件,添加内容:
vi /etc/resolv.conf
search rac-scan.linuxidc.com
nameserver 192.168.2.98
------------------------------------
分别在两个节点验证,使用以下命令:
nslookup 192.168.2.212
nslookup rac-scan.linuxidc.com

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Full table scanning may be faster in MySQL than using indexes. Specific cases include: 1) the data volume is small; 2) when the query returns a large amount of data; 3) when the index column is not highly selective; 4) when the complex query. By analyzing query plans, optimizing indexes, avoiding over-index and regularly maintaining tables, you can make the best choices in practical applications.

Yes, MySQL can be installed on Windows 7, and although Microsoft has stopped supporting Windows 7, MySQL is still compatible with it. However, the following points should be noted during the installation process: Download the MySQL installer for Windows. Select the appropriate version of MySQL (community or enterprise). Select the appropriate installation directory and character set during the installation process. Set the root user password and keep it properly. Connect to the database for testing. Note the compatibility and security issues on Windows 7, and it is recommended to upgrade to a supported operating system.

InnoDB's full-text search capabilities are very powerful, which can significantly improve database query efficiency and ability to process large amounts of text data. 1) InnoDB implements full-text search through inverted indexing, supporting basic and advanced search queries. 2) Use MATCH and AGAINST keywords to search, support Boolean mode and phrase search. 3) Optimization methods include using word segmentation technology, periodic rebuilding of indexes and adjusting cache size to improve performance and accuracy.

The difference between clustered index and non-clustered index is: 1. Clustered index stores data rows in the index structure, which is suitable for querying by primary key and range. 2. The non-clustered index stores index key values and pointers to data rows, and is suitable for non-primary key column queries.

MySQL is an open source relational database management system. 1) Create database and tables: Use the CREATEDATABASE and CREATETABLE commands. 2) Basic operations: INSERT, UPDATE, DELETE and SELECT. 3) Advanced operations: JOIN, subquery and transaction processing. 4) Debugging skills: Check syntax, data type and permissions. 5) Optimization suggestions: Use indexes, avoid SELECT* and use transactions.

MySQL and MariaDB can coexist, but need to be configured with caution. The key is to allocate different port numbers and data directories to each database, and adjust parameters such as memory allocation and cache size. Connection pooling, application configuration, and version differences also need to be considered and need to be carefully tested and planned to avoid pitfalls. Running two databases simultaneously can cause performance problems in situations where resources are limited.

In MySQL database, the relationship between the user and the database is defined by permissions and tables. The user has a username and password to access the database. Permissions are granted through the GRANT command, while the table is created by the CREATE TABLE command. To establish a relationship between a user and a database, you need to create a database, create a user, and then grant permissions.

Data Integration Simplification: AmazonRDSMySQL and Redshift's zero ETL integration Efficient data integration is at the heart of a data-driven organization. Traditional ETL (extract, convert, load) processes are complex and time-consuming, especially when integrating databases (such as AmazonRDSMySQL) with data warehouses (such as Redshift). However, AWS provides zero ETL integration solutions that have completely changed this situation, providing a simplified, near-real-time solution for data migration from RDSMySQL to Redshift. This article will dive into RDSMySQL zero ETL integration with Redshift, explaining how it works and the advantages it brings to data engineers and developers.
