centos安装couchdb

一、CouchDB简介

CouchDB是Apache Foundation开发的免费开源NoSQL数据库。该特定数据库侧重于易用性和可伸缩性。CouchDB具有面向文档的NoSQL数据库体系结构，使用JSON存储数据，它使用Javascript作为其查询语言，使用HTTP作为其API。

CouchDB与关系数据库不同，因为每个数据库都是独立文档的集合，每个文档都维护着自己的数据和自包含模式。由于其出色的复制和同步功能，CouchDB为移动设备应用和类似的基于服务的需求提供了理想的数据库。此NoSQL数据库也非常适合具有累积数据（版本控制是关键）的应用程序，例如CRM和CMS系统。

二、安装epel-release存储库

CouchDB存储库取决于EPEL存储库]（https://myfreax.com/post/how-to-enable-epel-repository-on-centos/）。安装epel-release存储库

[root@localhost hl95_network]# yum install epel-release -y

三、创建CouchDB存储库文件

[root@localhost hl95_network]# vim  /etc/yum.repos.d/apache-couchdb.repo

[bintray--apache-couchdb-rpm]
name=bintray--apache-couchdb-rpm
baseurl=http://apache.bintray.com/couchdb-rpm/el$releasever/$basearch/
gpgcheck=0
repo_gpgcheck=0
enabled=1

四、安装CouchDB

[root@localhost opt]# yum install couchdb -y

安装路径为/opt/couchdb

[root@localhost opt]# ll /opt/couchdb/
??? 108
drwxr-xr-x  2 couchdb couchdb     68 7?  21 16:04 bin
lrwxrwxrwx  1 couchdb couchdb     16 7?  21 16:04 data -> /var/lib/couchdb
drwxr-xr-x  8 couchdb couchdb     76 7?  21 16:04 erts-9.3.3.14
drwxr-xr-x  4 couchdb couchdb     89 7?  21 16:04 etc
drwxr-xr-x 49 couchdb couchdb   4096 7?  21 16:04 lib
-rwxr-xr-x  1 couchdb couchdb 104255 5?   4 10:16 LICENSE
drwxr-xr-x  3 couchdb couchdb     57 7?  21 16:04 releases
drwxr-xr-x  5 couchdb couchdb     43 7?  21 16:04 share
drwxr-xr-x  3 couchdb couchdb     17 7?  21 16:04 var
[root@localhost opt]# 

五、启动couchdb

[root@localhost opt]# systemctl enable couchdb
Created symlink from /etc/systemd/system/multi-user.target.wants/couchdb.service to /usr/lib/systemd/system/couchdb.service.
[root@localhost opt]# 

[root@localhost opt]# systemctl start couchdb
[root@localhost opt]# systemctl status couchdb
? couchdb.service - Apache CouchDB
   Loaded: loaded (/usr/lib/systemd/system/couchdb.service; disabled; vendor preset: disabled)
   Active: activating (auto-restart) (Result: exit-code) since ? 2020-07-21 16:06:28 CST; 34ms ago
  Process: 12047 ExecStart=/opt/couchdb/bin/couchdb (code=exited, status=1/FAILURE)
 Main PID: 12047 (code=exited, status=1/FAILURE)

7? 21 16:06:28 localhost systemd[1]: Unit couchdb.service entered failed state.
7? 21 16:06:28 localhost systemd[1]: couchdb.service failed.
[root@localhost opt]# 

六、停止couchdb

[root@localhost opt]# systemctl stop couchdb

七、配置CouchDB

修改监听地址和端口

[root@localhost opt]# vim /opt/couchdb/etc/local.ini 

查找[chttpd]部分

[chttpd]
;port = 5984
;bind_address = 127.0.0.1
bind_address=0.0.0.0

监听地址改为：0.0.0.0

设置数据目录

查找[couchdb]部分

[couchdb]
;max_document_size = 4294967296 ; bytes
;os_process_timeout = 5000
uuid = 0446409388bdbdc5436c7fa4f6491afe
database_dir=/home/couchdb

添加database_dir项

查找[admins]部分

设置管理员登录密码

[admins]
;admin = mysecretpassword
admin=xxxxxxx

八、重启CouchDB

[root@localhost opt]# systemctl restart couchdb
[root@localhost opt]# netstat -tunlp|grep 5984
tcp        0      0 0.0.0.0:5984            0.0.0.0:*               LISTEN      13359/beam.smp 

九、测试

[root@localhost opt]# curl http://127.0.0.1:5984
{"couchdb":"Welcome","version":"3.1.0","git_sha":"ff0feea20","uuid":"5efbd66f2f7a3cb2eaf3b306ce87c7fa","features":["access-ready","partitioned","pluggable-storage-engines","reshard","scheduler"],"vendor":{"name":"The Apache Software Foundation"}}

十、登录管理后台

http://xxx.xxx.xxx.xxx:5984/_utils