CouchDB安装以及使用

　

couchdb

系统

[root@fabric-cli ~]# cat /etc/redhat-release 
centos linux release 7.5.1804 (Core) 

安装

安装rpm仓库

vi /etc/yum.repos.d/bintray-apache-couchdb-rpm.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

安装CouchDB

sudo yum update -y && yum -y install epel-release && yum install couchdb

默认安装路径

/opt/couchdb

如果你是base系统，就要安装以下依赖，不是就略过

sudo yum install autoconf autoconf-archive automake \
    curl-devel erlang-asn1 erlang-erts erlang-eunit gcc-c++ \
    erlang-os_mon erlang-xmerl erlang-erl_interface help2man \
    js-devel-1.8.5 libicu-devel libtool perl-Test-Harness
    sudo yum install erlang-reltool

依赖，非base系统略过

Erlang OTP (>=R16B03, =<19.x)
ICU
OpenSSL
Mozilla SpiderMonkey (1.8.5)
GNU Make
GNU Compiler Collection
libcurl
help2man
Python (>=2.7) for docs
Python Sphinx (>=1.1.3)

修改配置文件，配置文件相关参数说明请参考configuration files

[root@fabric-cli etc]# pwd
/opt/couchdb/etc
[root@fabric-cli etc]# ls -l
总用量 36
drwxr-xr-x 2 couchdb couchdb    42 5月  17 15:02 default.d
-rwxr-xr-x 1 couchdb couchdb 21567 5月  17 16:01 default.ini
drwxr-xr-x 2 couchdb couchdb    20 5月  17 15:02 local.d
-rwxr-xr-x 1 couchdb couchdb  4655 5月  17 15:52 local.ini
-rwxr-xr-x 1 couchdb couchdb  1793 11月  8 2017 vm.args

vi default.ini
...
port = 5984
bind_address = 0.0.0.0 //把127.0.0.1修改为0.0.0.0
backlog = 512
docroot = ./share/www
...

非后台启动

sudo -i -u couchdb /opt/couchdb/bin/couchdb

启动成功，访问 localhost:5984 或者nodeIp:5984

访问fauxton(http://10.4.93.141:5984/_utils/)，详细请参考fauxton

可以通过fauxton对couchdb进行CRUD,具体使用教程请参考fauxton

还可以通过命令行调用couchdb API进行操作couchdb

后台启动

下载以及安装过程可以参考runit,也可以通过以下命令安装,也可以参考学习笔记

curl -s https://packagecloud.io/install/repositories/imeyer/runit/script.rpm.sh | sudo bash
yum install runit-2.1.1-7.el7.centos.x86_64

//启动
runsvdir -P /etc/service
//查看是否运行runit
[root@fabric-cli couchdb]# ps -ef | grep runsvdir
[root@fabric-cli sv]# ps -ef | grep runsvdir
root      1569  1512  0 17:21 pts/1    00:00:00 runsvdir -P /etc/service
root      1609  1495  0 17:22 pts/0    00:00:00 grep --color=auto runsvdir

//创建日志文件夹
mkdir -p /var/log/couchdb 
sudo chown couchdb:couchdb /var/log/couchdb

//创建runit工作目录
mkdir -p /etc/sv/couchdb
mkdir -p /etc/sv/couchdb/logs


vi /etc/sv/couchdb/log/run
#!/bin/sh
exec svlogd -tt /var/log/couchdb

vi /etc/sv/couchdb/run

#!/bin/sh
export HOME=/opt/couchdb
exec 2>&1
exec chpst -u couchdb /opt/couchdb/bin/couchdb


sudo chmod u+x /etc/sv/couchdb/log/run
sudo chmod u+x /etc/sv/couchdb/run

sudo ln -s /etc/sv/couchdb/ /etc/service/couchdb


[root@fabric-cli sv]# sv status couchdb
run: couchdb: (pid 1571) 141s

sudo sv stop couchdb

sudo sv start couchdb

[root@fabric-cli logs]# cd /var/log/couchdb
[root@fabric-cli couchdb]# ls -l
总用量 31296
-rw-rw-r-- 1 couchdb couchdb 27942313 5月  23 17:26 couchdb.log
-rwxr--r-- 1 root    root           0 5月  23 16:01 current
-rw------- 1 root    root           0 5月  23 16:01 lock
[root@fabric-cli couchdb]# pwd
/var/log/couchdb


[root@fabric-cli etc]# sv start couchdb
ok: run: couchdb: (pid 1624) 0s

后台启动成功

从命令行执行CRUD操作

创建用户

创建数据库

[root@fabric-cli ~]# curl -X PUT http://localhost:5984/qinzhao_database -u "admin:admin"
{"ok":true}

查看数据库信息

[root@fabric-cli ~]#     curl -X GET http://localhost:5984/_all_dbs
["qinzhao_database","qinzhaodemo","todos","verifytestdb","verifytestdb_replicate"]

创建文档

[root@fabric-cli ~]# curl -X POST -d '{"todo":"task 1", "done":false}' http://localhost:5984/qinzhao_database -H "content-Type:APPlication/json"
{"ok":true,"id":"4aa6e557448d76ce68097089b4000833","rev":"1-2fc1d70532433c39c9f61480607e3681"}

查看文档

用指定的ID创建

创建一个ID为random_task的文档：

[root@fabric-cli ~]# curl -X POST -d '{"_id":"random_task", "todo":"task 2", "done":false}' http://localhost:5984/qinzhao_database -H "Content-Type:application/json"
{"ok":true,"id":"random_task","rev":"1-bceeae3c4a9154c87db1649473316e44"}

创建多个文档

 curl -X POST -d '{"docs": [{"todo":"task 3", "done":false}, {"todo":"task 4", "done":false}]}' http://localhost:5984/qinzhao_database/_bulk_docs -H "Content-Type:application/json"

[root@fabric-cli ~]#  curl -X POST -d '{"docs": [{"todo":"task 3", "done":false}, {"todo":"task 4", "done":false}]}' http://localhost:5984/qinzhao_database/_bulk_docs -H "Content-Type:application/json"
[{"ok":true,"id":"4aa6e557448d76ce68097089b4001ac1","rev":"1-778fd61f8f460d0c1df1bb174279489d"},{"ok":true,"id":"4aa6e557448d76ce68097089b4002343","rev":"1-dc9e84861bba58e5cfefeed8f5133636"}]

读取文件

[root@fabric-cli ~]# curl -X GET http://localhost:5984/qinzhao_database/random_task
{"_id":"random_task","_rev":"1-bceeae3c4a9154c87db1649473316e44","todo":"task 2","done":false}

[root@fabric-cli ~]#     curl -X GET http://localhost:5984/qinzhao_database/4aa6e557448d76ce68097089b4002343
{"_id":"4aa6e557448d76ce68097089b4002343","_rev":"1-dc9e84861bba58e5cfefeed8f5133636","todo":"task 4","done":false}

更新文档

[root@fabric-cli ~]# curl -X GET http://localhost:5984/qinzhao_database/random_task
{"_id":"random_task","_rev":"1-bceeae3c4a9154c87db1649473316e44","todo":"task 2","done":false}

[root@fabric-cli ~]# curl -X PUT -d '{"_rev":"1-bceeae3c4a9154c87db1649473316e44", "todo":"task 2", "done":true}' http://localhost:5984/qinzhao_database/random_task
{"ok":true,"id":"random_task","rev":"2-4cc3dfb6e76befd665faf124b36b7f1c"}

[root@fabric-cli ~]# curl -X GET http://localhost:5984/qinzhao_database/random_task
{"_id":"random_task","_rev":"2-4cc3dfb6e76befd665faf124b36b7f1c","todo":"task 2","done":true}

删除文档

使用HTTP DELETE请求要指定包含这个新的rev值来删除这个文档，如下所示：

[root@fabric-cli ~]# curl -X POST -d '{"_id":"qinzhaoID", "todo":"task 2", "done":false}' http://localhost:5984/qinzhao_database -H "Content-Type:application/json"
{"ok":true,"id":"qinzhaoID","rev":"1-bceeae3c4a9154c87db1649473316e44"}

[root@fabric-cli ~]#     curl -X GET http://localhost:5984/qinzhao_database/qinzhaoID
{"_id":"qinzhaoID","_rev":"1-bceeae3c4a9154c87db1649473316e44","todo":"task 2","done":false}

[root@fabric-cli ~]# curl -X DELETE http://localhost:5984/qinzhao_database/qinzhaoID?rev=1-bceeae3c4a9154c87db1649473316e44
{"ok":true,"id":"qinzhaoID","rev":"2-333ecb649463a4938ffbb416916be2f8"}
[root@fabric-cli ~]#     curl -X GET http://localhost:5984/qinzhao_database/qinzhaoID
{"ERROR":"not_found","reason":"deleted"}

查看集群设置_cluster_setup

[root@fabric-cli ~]#     curl -X GET http://localhost:5984/_cluster_setup -u "admin:admin"
{"state":"cluster_enabled"}

查看集群成员

[root@fabric-cli ~]#     curl -X GET http://localhost:5984/_membership -u "admin:admin"
{"all_nodes":["[email protected]"],"cluster_nodes":["[email protected]"]}

获取调度job

[root@fabric-cli ~]#     curl -X GET http://localhost:5984/_scheduler/jobs -u "admin:admin"
{"total_rows":0,"offset":0,"jobs":[]}

更多请参考CouchDB API

参考:

Installation

CouchDB快速入门

CouchDB API

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