mongodb介绍
https://www.yiibai.com/mongodb/mongodb\_drop\_collection.html
1.文档性数据库类似于json对象，分布式
mongodb安装
1.基本思路就是创建一个官方的yum源，我们这里安装最新的3.6版本
1[root@centos-02 ~]# cd /etc/yum.repos.d/ 2[root@centos-02 yum.repos.d]# vim mongodb.repo 3[root@centos-02 yum.repos.d]# 4[mongodb-org-3.6] 5name=MongoDB Repository 6baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.6/x86_64/ 7gpgcheck=1 8enabled=1 9gpgkey=https://www.mongodb.org/static/pgp/server-3.6.asc
2.然后查看下源中有没有mongodb这个包，ok有
1[root@centos-02 yum.repos.d]# 2[root@centos-02 yum.repos.d]# yum list|grep mongodb 3collectd-write_mongodb.x86_64 5.8.0-1.el7 epel 4mongodb.x86_64 2.6.12-6.el7 epel 5mongodb-org.x86_64 3.6.3-1.el7 mongodb-org-3.6 6mongodb-org-mongos.x86_64 3.6.3-1.el7 mongodb-org-3.6 7mongodb-org-server.x86_64 3.6.3-1.el7 mongodb-org-3.6 8mongodb-org-shell.x86_64 3.6.3-1.el7 mongodb-org-3.6 9mongodb-org-tools.x86_64 3.6.3-1.el7 mongodb-org-3.6 10mongodb-server.x86_64 2.6.12-6.el7 epel 11mongodb-test.x86_64 2.6.12-6.el7 epel 12nodejs-mongodb.noarch 1.4.7-1.el7 epel 13php-mongodb.noarch 1.0.4-1.el7 epel 14php-pecl-mongodb.x86_64 1.1.10-1.el7 epel 15poco-mongodb.x86_64 1.6.1-3.el7 epel 16syslog-ng-mongodb.x86_64 3.5.6-3.el7 epel 17[root@centos-02 yum.repos.d]#
3.安装mongodb
[root@centos-02 yum.repos.d]# yum install -y mongodb-org
连接mongodb
1.如果想绑定多个ip访问，添加多个ip用逗号分割
bindIp: 127.0.0.1,192.168.133.88
2.启动mongodb
1[root@centos-02 yum.repos.d]# systemctl start mongod 2[root@centos-02 yum.repos.d]# ps aux|grep mongod 3mongod 48151 5.1 4.2 1005608 42792 ? Sl 17:28 0:03 /usr/bin/mongod -f /etc/mongod.conf 4root 48176 0.0 0.0 112680 948 pts/0 R+ 17:29 0:00 grep --color=auto mongod 5[root@centos-02 yum.repos.d]# netstat -lntp |grep mongod 6tcp 0 0 192.168.133.88:27017 0.0.0.0:* LISTEN 48151/mongod 7tcp 0 0 127.0.0.1:27017 0.0.0.0:* LISTEN 48151/mongod 8[root@centos-02 yum.repos.d]#
3.在本机直接运行mongo进入到mongodb shell中
1[root@centos-02 yum.repos.d]# mongo 2MongoDB shell version v3.6.3 3connecting to: mongodb://127.0.0.1:27017 4MongoDB server version: 3.6.3 5Welcome to the MongoDB shell. 6For interactive help, type "help". 7For more comprehensive documentation, see 8 http://docs.mongodb.org/ 9Questions? Try the support group 10 http://groups.google.com/group/mongodb-user 11Server has startup warnings: 122018-04-01T17:28:16.465+0800 I CONTROL [initandlisten] 132018-04-01T17:28:16.467+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database. 142018-04-01T17:28:16.467+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted. 152018-04-01T17:28:16.468+0800 I CONTROL [initandlisten] 162018-04-01T17:28:16.469+0800 I CONTROL [initandlisten] 172018-04-01T17:28:16.470+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. 182018-04-01T17:28:16.470+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 192018-04-01T17:28:16.470+0800 I CONTROL [initandlisten] 20>
4.连接到指定的ip和端口
1[root@centos-02 yum.repos.d]# mongo --host 192.168.133.88 --port 27017 2MongoDB shell version v3.6.3 3connecting to: mongodb://192.168.133.88:27017/ 4MongoDB server version: 3.6.3 5Server has startup warnings: 62018-04-01T17:28:16.465+0800 I CONTROL [initandlisten] 72018-04-01T17:28:16.467+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database. 82018-04-01T17:28:16.467+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted. 92018-04-01T17:28:16.468+0800 I CONTROL [initandlisten] 102018-04-01T17:28:16.469+0800 I CONTROL [initandlisten] 112018-04-01T17:28:16.470+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. 122018-04-01T17:28:16.470+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 132018-04-01T17:28:16.470+0800 I CONTROL [initandlisten] 14>
5.如果设置了验证，需要输入用户和密码和连接的加密库
[root@centos-02 yum.repos.d]# mongo -uusername -ppassword --authenticationDatabase db
mongodb用户管理
1.如何给用户设置密码，切换到admin库，执行创建用户语句（语句包括，创建的用户名，用户的描述（可以不写），用户密码，什么角色，角色在哪一个库）
1[root@centos-02 yum.repos.d]# mongo --host 192.168.133.88 --port 27017 2MongoDB shell version v3.6.3 3connecting to: mongodb://192.168.133.88:27017/ 4MongoDB server version: 3.6.3 5Server has startup warnings: 62018-04-01T17:28:16.465+0800 I CONTROL [initandlisten] 72018-04-01T17:28:16.467+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database. 82018-04-01T17:28:16.467+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted. 92018-04-01T17:28:16.468+0800 I CONTROL [initandlisten] 102018-04-01T17:28:16.469+0800 I CONTROL [initandlisten] 112018-04-01T17:28:16.470+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. 122018-04-01T17:28:16.470+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 132018-04-01T17:28:16.470+0800 I CONTROL [initandlisten] 14> use admin 15switched to db admin 16> db.createUser( { user: "admin", customData: {description: "superuser"}, pwd: "admin122", roles: [ { role: "root", db: "admin" } ] } ) 17Successfully added user: { 18 "user" : "admin", 19 "customData" : { 20 "description" : "superuser" 21 }, 22 "roles" : [ 23 { 24 "role" : "root", 25 "db" : "admin" 26 } 27 ] 28} 29>
2.列出所有用户，需要事先切换的admin库
1> db.system.users.find() 2{ "_id" : "admin.test1", "user" : "test1", "db" : "admin", "credentials" : { "SCRAM-SHA-1" : { "iterationCount" : 10000, "salt" : "qkIyRd0o38eqKOlEx3vwHA==", "storedKey" : "JVrdMZud+jjZb9awIWxSrLwixxY=", "serverKey" : "vmaJHnyV8tfPyvxqpuF4ipe/MJc=" } }, "roles" : [ { "role" : "readWrite", "db" : "db1" }, { "role" : "read", "db" : "db2" } ] } 3{ "_id" : "admin.admin", "user" : "admin", "db" : "admin", "credentials" : { "SCRAM-SHA-1" : { "iterationCount" : 10000, "salt" : "OMpr/hze3FqzgKmv45sUBw==", "storedKey" : "EkLLK+LNAGMVV3ddgxYoZCXGlPU=", "serverKey" : "h1UxGUDeFB9C1N7dRyN30bDhFOA=" } }, "customData" : { "description" : "superuser" }, "roles" : [ { "role" : "root", "db" : "admin" } ] } 4>
3.查看当前库下所有的用户
1> show users 2{ 3 "_id" : "admin.admin", 4 "user" : "admin", 5 "db" : "admin", 6 "customData" : { 7 "description" : "superuser" 8 }, 9 "roles" : [ 10 { 11 "role" : "root", 12 "db" : "admin" 13 } 14 ] 15} 16{ 17 "_id" : "admin.test1", 18 "user" : "test1", 19 "db" : "admin", 20 "roles" : [ 21 { 22 "role" : "readWrite", 23 "db" : "db1" 24 }, 25 { 26 "role" : "read", 27 "db" : "db2" 28 } 29 ] 30} 31>
4.删除一个用户，怎么删除，首先创建一个测试用户
1> db.createUser({user:"linux",pwd:"linux",roles:[{role:"read",db:"testdb"}]}) 2Successfully added user: { 3 "user" : "linux", 4 "roles" : [ 5 { 6 "role" : "read", 7 "db" : "testdb" 8 } 9 ] 10} 11>
5.删除后查看用户，发现linux用户没有了
1> db.dropUser('linux') 2true 3> show users 4{ 5 "_id" : "admin.admin", 6 "user" : "admin", 7 "db" : "admin", 8 "customData" : { 9 "description" : "superuser" 10 }, 11 "roles" : [ 12 { 13 "role" : "root", 14 "db" : "admin" 15 } 16 ] 17} 18{ 19 "_id" : "admin.test1", 20 "user" : "test1", 21 "db" : "admin", 22 "roles" : [ 23 { 24 "role" : "readWrite", 25 "db" : "db1" 26 }, 27 { 28 "role" : "read", 29 "db" : "db2" 30 } 31 ] 32} 33>
6.use一个库，如果这个库不存在，则会创建这个库。
1> use testdb 2switched to db testdb 3>
7.若要用户生效，还需要编辑配置启动文件，在OPTIONS后面加上--auth，只有加了--auth，才可以用用户名密码登录，重启mongo
1[root@centos-02 yum.repos.d]# vim /usr/lib/systemd/system/mongod.service 2[root@centos-02 yum.repos.d]# 3Environment="OPTIONS=--auth -f /etc/mongod.conf" 4[root@centos-02 yum.repos.d]# systemctl daemon-reload 5[root@centos-02 yum.repos.d]# systemctl restart mongod 6[root@centos-02 yum.repos.d]# ps aux|grep mongo 7mongod 48251 60.1 4.2 1005608 42600 ? Sl 18:26 0:25 /usr/bin/mongod --auth -f /etc/mongod.conf 8root 48279 0.0 0.0 112680 944 pts/0 R+ 18:27 0:00 grep --color=auto mong 9[root@centos-02 yum.repos.d]#
8.测试用户密码登录，我们还是用之前不用用户和密码的方式登录查看admin库发现不行了，用用户名密码登录可以
1[root@centos-02 yum.repos.d]# mongo --host 192.168.133.88 --port 27017 2MongoDB shell version v3.6.3 3connecting to: mongodb://192.168.133.88:27017/ 4MongoDB server version: 3.6.3 5> use admin 6switched to db admin 7> show users 82018-04-01T18:31:54.272+0800 E QUERY [thread1] Error: not authorized on admin to execute command { usersInfo: 1.0, $db: "admin" } : 9_getErrorWithCode@src/mongo/shell/utils.js:25:13 10DB.prototype.getUsers@src/mongo/shell/db.js:1686:1 11shellHelper.show@src/mongo/shell/utils.js:799:9 12shellHelper@src/mongo/shell/utils.js:706:15 13@(shellhelp2):1:1 14> 15 16[root@centos-02 yum.repos.d]# mongo --host 192.168.133.88 --port 27017 -u admin -p 'admin122' --authenticationDatabase "admin" 17> use admin 18switched to db admin 19> show users 20{ 21 "_id" : "admin.admin", 22 "user" : "admin", 23 "db" : "admin", 24 "customData" : { 25 "description" : "superuser" 26 }, 27 "roles" : [ 28 { 29 "role" : "root", 30 "db" : "admin" 31 } 32 ] 33} 34{ 35 "_id" : "admin.test1", 36 "user" : "test1", 37 "db" : "admin", 38 "roles" : [ 39 { 40 "role" : "readWrite", 41 "db" : "db1" 42 }, 43 { 44 "role" : "read", 45 "db" : "db2" 46 } 47 ] 48} 49>
9.大家要记住，创建用户的时候必须要针对一个库，登录的时候也需要针对这个库做认证
1.创建db1，针对db1授权一个用户
1> use db1 2switched to db db1 3> db.createUser( { user: "test1", pwd: "123aaa", roles: [ { role: "readWrite", db: "db1" }, {role: "read", db: "db2" } ] } ) 4Successfully added user: { 5 "user" : "test1", 6 "roles" : [ 7 { 8 "role" : "readWrite", 9 "db" : "db1" 10 }, 11 { 12 "role" : "read", 13 "db" : "db2" 14 } 15 ] 16} 17>
2.在db1里show，在哪个库创建就在哪个库show
1> show users 2{ 3 "_id" : "db1.test1", 4 "user" : "test1", 5 "db" : "db1", 6 "roles" : [ 7 { 8 "role" : "readWrite", 9 "db" : "db1" 10 }, 11 { 12 "role" : "read", 13 "db" : "db2" 14 } 15 ] 16} 17>
3.在命令行授权一个用户对db1有权限
1> use db1 2switched to db db1 3> db.auth('test1','123aaa') 41 5>
mongodb创建集合、数据管理
1.我们在db1中创建集合
1> db.createCollection("mycol", { capped : true, size : 6142800, max : 10000 } ) 2{ "ok" : 1 } 3>
1.查看集合
1> show collections 2mycol 3> show tables 4mycol 5>
2.集合插入数据，没有集合会自动创建集合
1> db.Account.insert({AccountID:1,UserName:"123",password:"123456"}) 2WriteResult({ "nInserted" : 1 }) 3> show tables 4Account 5mycol 6> db.Account.insert({AccountID:2,UserName:"222",password:"222222"}) 7WriteResult({ "nInserted" : 1 }) 8>
3.更新数据并查看结果
1> db.Account.update({AccountID:1},{"$set":{"Age":20}}) 2WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })查看所有文档 3> db.Account.find() 4{ "_id" : ObjectId("5ac23df4fd2577e13af3e0ee"), "AccountID" : 1, "UserName" : "123", "password" : "123456", "Age" : 20 } 5{ "_id" : ObjectId("5ac23e19fd2577e13af3e0ef"), "AccountID" : 2, "UserName" : "222", "password" : "222222" } 6>
4.根据条件查询
1> db.Account.find({AccountID:1}) 2{ "_id" : ObjectId("5ac23df4fd2577e13af3e0ee"), "AccountID" : 1, "UserName" : "123", "password" : "123456", "Age" : 20 } 3>
5.根据条件删除一行
1> db.Account.remove({AccountID:1}) 2WriteResult({ "nRemoved" : 1 }) 3> db.Account.find() 4{ "_id" : ObjectId("5ac23e19fd2577e13af3e0ef"), "AccountID" : 2, "UserName" : "222", "password" : "222222" } 5>
6.删除所有的文档，即删除集合
1> db.Account.drop() 2true 3> db.Account.find() 4>
7.查看集合状态
db.printCollectionStats()
PHP的mongodb扩展
1.mongodb对于php有两个扩展，一个是mongo扩展，一个是mongodb扩展，mongo扩展是针对php5.X，mongodb是针对更高版本的
2.我们开始安装mongodb，下载mongodb
1[root@centos-02 src]# cd /usr/local/src/ 2[root@centos-02 src]# wget http://pecl.php.net/get/mongodb-1.4.2.tgz
3.解压
[root@centos-02 src]# tar zxvf mongodb-1.4.2.tgz
4.进入mongodb执行phpize
1[root@centos-02 src]# cd mongodb-1.4.2 2 3[root@centos-02 mongodb-1.4.2]# /usr/bin/phpize （安装php-fpm的执行/usr/local/php-frm/bin/phpize）
5.编译
[root@centos-02 mongodb-1.4.2]# ./configure --with-php-config=/usr/bin/php-config （如果是nginx的php路径为/usr/local/php-fpm/bin/php-conf）
6.哈哈不支持低版本的php，重新下一个mongodb
1configure: error: not supported. Need a PHP version >= 5.5.0 (found 5.4.16) 2[root@centos-02 mongodb-1.4.2]# 3 4[root@centos-02 src]# wget https://github.com/mongodb/mongo-php-driver-legacy/archive/master.zip
7.解压
[root@centos-02 src]# unzip master.zip
8.进入mongodb执行phpize，编译
1[root@centos-02 src]# cd mongo-php-driver-legacy-master/[root@centos-02 mongo-php-driver-legacy-master]# /usr/bin/phpize 2[root@centos-02 mongo-php-driver-legacy-master]# ./configure --with-php-config=/usr/bin/php-config
9.make && make install
1[root@centos-02 mongo-php-driver-legacy-master]# make install 2Installing shared extensions: /usr/lib64/php/modules/ 3[root@centos-02 mongo-php-driver-legacy-master]# ls /usr/lib64/php/modules/ 4bcmath.so json.so mysqli.so phar.so xmlwriter.so 5curl.so ldap.so mysql.so redis.so xsl.so 6dom.so mbstring.so pdo_mysql.so sqlite3.so zip.so 7fileinfo.so memcache.so pdo.so wddx.so 8gd.so mongo.so pdo_sqlite.so xmlreader.so 9[root@centos-02 mongo-php-driver-legacy-master]# ls /usr/lib64/php/modules/
10.编辑php.ini增加mongo.so
1[root@centos-02 mongo-php-driver-legacy-master]# vim /etc/php.ini （nginx安装的高版本php路径为/usr/local/php-fpm/etc/php.ini） 2extension=mongo.so (高版本的mongodb.so)
11.检测是否加载了mongo模块
1[root@centos-02 mongo-php-driver-legacy-master]# /usr/bin/php -m|grep mongo 2mongo 3[root@centos-02 mongo-php-driver-legacy-master]#
12.重启httpd （如果用的是php-fpm需要重启/etc/init.d/php-fpm restart）
1[root@centos-02 mongo-php-driver-legacy-master]# systemctl restart httpd 2[root@centos-02 mongo-php-driver-legacy-master]#
1.测试，没有出来我们需要关闭秘钥认证登录
1[root@centos-02 ~]# vim /var/www/html/mongo.php （如果是nginx我们放到vim /data/wwwroot/default/mongo.php） 2[root@centos-02 ~]# 3<?php 4$m = new MongoClient(); // 连接 5$db = $m->test; // 获取名称为 "test" 的数据库 6$collection = $db->createCollection("runoob"); 7echo "集合创建成功"; 8?> 9 10[root@centos-02 ~]# curl localhost/mongo.php 11集合创建成功 12[root@centos-02 ~]# mongo --host 192.168.133.88 --port 27017 -u admin -p 'admin122' --authenticationDatabase "admin" 13MongoDB shell version v3.6.3 14connecting to: mongodb://192.168.133.88:27017/ 15MongoDB server version: 3.6.3 16Server has startup warnings: 172018-04-01T18:27:05.449+0800 I CONTROL [initandlisten] 182018-04-01T18:27:05.450+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. 192018-04-01T18:27:05.450+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 202018-04-01T18:27:05.450+0800 I CONTROL [initandlisten] 21> use test 22switched to db test 23> show tables 24>
2.去掉--auth和空格，这样mongodb就不使用用户名密码认证了
1[root@centos-02 ~]# vim /usr/lib/systemd/system/mongod.service 2[root@centos-02 ~]# 3Environment="OPTIONS=--auth -f /etc/mongod.conf"
3.重启mongodb
1[root@centos-02 ~]# systemctl daemon-reload 2[root@centos-02 ~]# systemctl restart mongod
4.再次验证，成功
1[root@centos-02 ~]# !curl 2curl localhost/mongo.php 3集合创建成功 4[root@centos-02 ~]# mongo --host 192.168.133.88 --port 27017 5MongoDB shell version v3.6.3 6connecting to: mongodb://192.168.133.88:27017/ 7MongoDB server version: 3.6.3 8Server has startup warnings: 92018-04-03T00:09:20.959+0800 I CONTROL [initandlisten] 102018-04-03T00:09:20.960+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database. 112018-04-03T00:09:20.960+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted. 122018-04-03T00:09:20.960+0800 I CONTROL [initandlisten] 132018-04-03T00:09:20.961+0800 I CONTROL [initandlisten] 142018-04-03T00:09:20.961+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. 152018-04-03T00:09:20.962+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 162018-04-03T00:09:20.962+0800 I CONTROL [initandlisten] 17> use test 18switched to db test 19> show tables 20runoob 21>
mongodb副本集介绍
mongodb副本集搭建
1.三台机器都安装mongodb 192.168.133.44（primary）192.168.133.88（secondary）192.168.133.66（secondary）
2.复制mongo yum源的内容到两台没有安装的机器
1[root@centos-02 ~]# cd /etc/yum.repos.d/ 2[root@centos-02 yum.repos.d]# ls 3CentOS-Base.repo CentOS-Media.repo epel-testing.repo zabbix.repo.bak 4CentOS-CR.repo CentOS-Sources.repo mongodb.repo 5CentOS-Debuginfo.repo CentOS-Vault.repo mysql-community.repo 6CentOS-fasttrack.repo epel.repo mysql-community-source.repo 7[root@centos-02 yum.repos.d]# cat mongodb.repo 8[mongodb-org-3.6] 9name=MongoDB Repository 10baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.6/x86_64/ 11gpgcheck=1 12enabled=1 13gpgkey=https://www.mongodb.org/static/pgp/server-3.6.asc 14[root@centos-02 yum.repos.d]# 15 16[root@centos-01 ~]# vim /etc/yum.repos.d/mongodb.repo 17[root@centos-01 ~]# 18[mongodb-org-3.6] 19name=MongoDB Repository 20baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.6/x86_64/ 21gpgcheck=1 22enabled=1 23gpgkey=https://www.mongodb.org/static/pgp/server-3.6.asc 24 25[root@centos-03 ~]# vim /etc/yum.repos.d/mongodb.repo 26[root@centos-03 ~]# 27[mongodb-org-3.6] 28name=MongoDB Repository 29baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.6/x86_64/ 30gpgcheck=1 31enabled=1 32gpgkey=https://www.mongodb.org/static/pgp/server-3.6.asc
3.yum安装
1[root@centos-01 ~]# yum install -y mongodb-org 2[root@centos-03 ~]# yum install -y mongodb-org
4.编辑配置文件
1[root@centos-01 ~]# vim /etc/mongod.conf 2[root@centos-01 ~]# bindIp: 127.0.0.1,192.168.133.44 3replication: 4 oplogSizeMB: 20 （相当于mysql中的binlog） 5 replSetName: mongodbslave （副本集的名字） 6 7[root@centos-02 yum.repos.d]# vim /etc/mongod.conf 8[root@centos-02 yum.repos.d]# 9 bindIp: 127.0.0.1,192.168.133.88 10replication: 11 oplogSizeMB: 20 12 replSetName: mongodbslave 13[root@centos-03 ~]# vim /etc/mongod.conf 14[root@centos-03 ~]# 15 bindIp: 127.0.0.1,192.168.133.66 16replication: 17 oplogSizeMB: 20 18 replSetName: mongodbsla
5.重启mongod
1[root@centos-01 ~]# systemctl restart mongod 2[root@centos-01 ~]# ps aux|grep mongod 3mongod 3169 22.0 4.9 1033844 49960 ? Sl 06:54 0:02 /usr/bin/mongod -f /etc/mongod.conf 4root 3198 0.0 0.0 112664 928 pts/0 S+ 06:54 0:00 grep --color=auto mongod 5[root@centos-01 ~]# 6 7[root@centos-01 ~]# netstat -lntp |grep mongod 8tcp 0 0 192.168.133.44:27017 0.0.0.0:* LISTEN 3611/mongod 9tcp 0 0 127.0.0.1:27017 0.0.0.0:* LISTEN 3611/mongod 10[root@centos-01 ~]#
6.关掉三台机器的iptables和selinux
1[root@centos-01 ~]# iptables -F 2[root@centos-01 ~]# iptables -nvL 3Chain INPUT (policy ACCEPT 7 packets, 468 bytes) 4 pkts bytes target prot opt in out source destination 5 6Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) 7 pkts bytes target prot opt in out source destination 8 9Chain OUTPUT (policy ACCEPT 4 packets, 448 bytes) 10 pkts bytes target prot opt in out source destination 11[root@centos-01 ~]# 12 13[root@centos-01 ~]# getenforce 14Disabled 15[root@centos-01 ~]#
1.进入mongo
[root@centos-01 ~]# mongo
2.配置副本集
1> config={_id:"mongodblinux",members:[{_id:0,host:"192.168.133.44:27017"},{_id:1,host:"192.168.133.88:27017"},{_id:2,host:"192.168.133.66:27017"}]} 2{ 3 "_id" : "mongodblinux", 4 "members" : [ 5 { 6 "_id" : 0, 7 "host" : "192.168.133.44:27017" 8 }, 9 { 10 "_id" : 1, 11 "host" : "192.168.133.88:27017" 12 }, 13 { 14 "_id" : 2, 15 "host" : "192.168.133.66:27017" 16 } 17 ] 18} 19>
3.初始化
1> rs.initiate(config) 2{ 3 "ok" : 1, 4 "operationTime" : Timestamp(1522799670, 1), 5 "$clusterTime" : { 6 "clusterTime" : Timestamp(1522799670, 1), 7 "signature" : { 8 "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="), 9 "keyId" : NumberLong(0) 10 } 11 } 12} 13mongodbslave:OTHER>
4.查看状态
1mongodbslave:OTHER> rs.status() 2{ 3 "set" : "mongodbslave", 4 "date" : ISODate("2018-04-03T23:55:50.921Z"), 5 "myState" : 1, 6 "term" : NumberLong(1), 7 "heartbeatIntervalMillis" : NumberLong(2000), 8 "optimes" : { 9 "lastCommittedOpTime" : { 10 "ts" : Timestamp(1522799710, 1), 11 "t" : NumberLong(1) 12 }, 13 "readConcernMajorityOpTime" : { 14 "ts" : Timestamp(1522799710, 1), 15 "t" : NumberLong(1) 16 }, 17 "appliedOpTime" : { 18 "ts" : Timestamp(1522799710, 1), 19 "t" : NumberLong(1) 20 }, 21 "durableOpTime" : { 22 "ts" : Timestamp(1522799710, 1), 23 "t" : NumberLong(1) 24 } 25 }, 26 "members" : [ 27 { 28 "_id" : 0, 29 "name" : "192.168.133.44:27017", 30 "health" : 1, 31 "state" : 1, 32 "stateStr" : "PRIMARY", 33 "uptime" : 2986, 34 "optime" : { 35 "ts" : Timestamp(1522799710, 1), 36 "t" : NumberLong(1) 37 }, 38 "optimeDate" : ISODate("2018-04-03T23:55:10Z"), 39 "infoMessage" : "could not find member to sync from", 40 "electionTime" : Timestamp(1522799689, 1), 41 "electionDate" : ISODate("2018-04-03T23:54:49Z"), 42 "configVersion" : 1, 43 "self" : true 44 }, 45 { 46 "_id" : 1, 47 "name" : "192.168.133.88:27017", 48 "health" : 1, 49 "state" : 2, 50 "stateStr" : "SECONDARY", 51 "uptime" : 80, 52 "optime" : { 53 "ts" : Timestamp(1522799710, 1), 54 "t" : NumberLong(1) 55 }, 56 "optimeDurable" : { 57 "ts" : Timestamp(1522799710, 1), 58 "t" : NumberLong(1) 59 }, 60 "optimeDate" : ISODate("2018-04-03T23:55:10Z"), 61 "optimeDurableDate" : ISODate("2018-04-03T23:55:10Z"), 62 "lastHeartbeat" : ISODate("2018-04-03T23:55:50.564Z"), 63 "lastHeartbeatRecv" : ISODate("2018-04-03T23:55:50.580Z"), 64 "pingMs" : NumberLong(29), 65 "syncingTo" : "192.168.133.44:27017", 66 "configVersion" : 1 67 }, 68 { 69 "_id" : 2, 70 "name" : "192.168.133.66:27017", 71 "health" : 1, 72 "state" : 2, 73 "stateStr" : "SECONDARY", 74 "uptime" : 79, 75 "optime" : { 76 "ts" : Timestamp(1522799710, 1), 77 "t" : NumberLong(1) 78 }, 79 "optimeDurable" : { 80 "ts" : Timestamp(1522799710, 1), 81 "t" : NumberLong(1) 82 }, 83 "optimeDate" : ISODate("2018-04-03T23:55:10Z"), 84 "optimeDurableDate" : ISODate("2018-04-03T23:55:10Z"), 85 "lastHeartbeat" : ISODate("2018-04-03T23:55:50.608Z"), 86 "lastHeartbeatRecv" : ISODate("2018-04-03T23:55:49.460Z"), 87 "pingMs" : NumberLong(23), 88 "syncingTo" : "192.168.133.44:27017", 89 "configVersion" : 1 90 } 91 ], 92 "ok" : 1, 93 "operationTime" : Timestamp(1522799710, 1), 94 "$clusterTime" : { 95 "clusterTime" : Timestamp(1522799710, 1), 96 "signature" : { 97 "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="), 98 "keyId" : NumberLong(0) 99 } 100 } 101} 102mongodbslave:PRIMARY>
mongodb副本集测试
1.创建一个库，创建一个集合
1mongodbslave:PRIMARY> use admin 2switched to db admin 3mongodbslave:PRIMARY> use mydb 4switched to db mydb 5mongodbslave:PRIMARY> db.acc.insert({AccountID:1,UserName:"123",password:"123456"}) 6WriteResult({ "nInserted" : 1 }) 7mongodbslave:PRIMARY> show dbs; 8admin 0.000GB 9config 0.000GB 10local 0.000GB 11mydb 0.000GB 12mongodbslave:PRIMARY> use mydb 13switched to db mydb 14mongodbslave:PRIMARY> show tables 15acc 16mongodbslave:PRIMARY>
2.从上查看mydb
1[root@centos-02 ~]# mongo 2MongoDB shell version v3.6.3 3connecting to: mongodb://127.0.0.1:27017 4MongoDB server version: 3.6.3 5Server has startup warnings: 62018-04-08T23:52:57.455+0800 I CONTROL [initandlisten] 72018-04-08T23:52:57.456+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database. 82018-04-08T23:52:57.456+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted. 92018-04-08T23:52:57.457+0800 I CONTROL [initandlisten] 102018-04-08T23:52:57.457+0800 I CONTROL [initandlisten] 112018-04-08T23:52:57.458+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'. 122018-04-08T23:52:57.458+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 132018-04-08T23:52:57.459+0800 I CONTROL [initandlisten] 142018-04-08T23:52:57.459+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. 152018-04-08T23:52:57.460+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 162018-04-08T23:52:57.460+0800 I CONTROL [initandlisten] 17mongodbslave:SECONDARY> 18mongodbslave:SECONDARY> show dbs 192018-04-09T00:10:50.623+0800 E QUERY [thread1] Error: listDatabases failed:{ 20 "operationTime" : Timestamp(1523232527, 1), 21 "ok" : 0, 22 "errmsg" : "not master and slaveOk=false", 23 "code" : 13435, 24 "codeName" : "NotMasterNoSlaveOk", 25 "$clusterTime" : { 26 "clusterTime" : Timestamp(1523232527, 1), 27 "signature" : { 28 "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="), 29 "keyId" : NumberLong(0) 30 } 31 } 32} : 33_getErrorWithCode@src/mongo/shell/utils.js:25:13 34Mongo.prototype.getDBs@src/mongo/shell/mongo.js:65:1 35shellHelper.show@src/mongo/shell/utils.js:816:19 36shellHelper@src/mongo/shell/utils.js:706:15 37@(shellhelp2):1:1 38mongodbslave:SECONDARY> rs.slaveOk() 39mongodbslave:SECONDARY> show dbs 40admin 0.000GB 41config 0.000GB 42local 0.000GB 43mydb 0.000GB 44mongodbslave:SECONDARY> use mydb 45switched to db mydb 46mongodbslave:SECONDARY> show tables 47acc 48mongodbslave:SECONDARY>
3.从上查看mydb
1[root@centos-03 ~]# mongo 2MongoDB shell version v3.6.3 3connecting to: mongodb://127.0.0.1:27017 4MongoDB server version: 3.6.3 5Welcome to the MongoDB shell. 6For interactive help, type "help". 7For more comprehensive documentation, see 8 http://docs.mongodb.org/ 9Questions? Try the support group 10 http://groups.google.com/group/mongodb-user 11Server has startup warnings: 122018-04-03T23:07:44.471+0800 I CONTROL [initandlisten] 132018-04-03T23:07:44.472+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database. 142018-04-03T23:07:44.472+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted. 152018-04-03T23:07:44.473+0800 I CONTROL [initandlisten] 162018-04-03T23:07:44.555+0800 I CONTROL [initandlisten] 172018-04-03T23:07:44.555+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'. 182018-04-03T23:07:44.555+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 192018-04-03T23:07:44.589+0800 I CONTROL [initandlisten] 202018-04-03T23:07:44.589+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. 212018-04-03T23:07:44.590+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 222018-04-03T23:07:44.590+0800 I CONTROL [initandlisten] 23mongodbslave:SECONDARY> 24mongodbslave:SECONDARY> show dbs 252018-04-09T00:12:45.860+0800 E QUERY [thread1] Error: listDatabases failed:{ 26 "operationTime" : Timestamp(1523232687, 1), 27 "ok" : 0, 28 "errmsg" : "not master and slaveOk=false", 29 "code" : 13435, 30 "codeName" : "NotMasterNoSlaveOk", 31 "$clusterTime" : { 32 "clusterTime" : Timestamp(1523232687, 1), 33 "signature" : { 34 "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="), 35 "keyId" : NumberLong(0) 36 } 37 } 38} : 39_getErrorWithCode@src/mongo/shell/utils.js:25:13 40Mongo.prototype.getDBs@src/mongo/shell/mongo.js:65:1 41shellHelper.show@src/mongo/shell/utils.js:816:19 42shellHelper@src/mongo/shell/utils.js:706:15 43@(shellhelp2):1:1 44mongodbslave:SECONDARY> rs.slaveOk() 45mongodbslave:SECONDARY> show dbs 46admin 0.000GB 47config 0.000GB 48local 0.000GB 49mydb 0.000GB 50mongodbslave:SECONDARY> use mydb 51switched to db mydb 52mongodbslave:SECONDARY> show tables 53acc 54mongodbslave:SECONDARY>
1.查看三个节点的权重
1mongodbslave:PRIMARY> rs.config() 2{ 3 "_id" : "mongodbslave", 4 "version" : 1, 5 "protocolVersion" : NumberLong(1), 6 "members" : [ 7 { 8 "_id" : 0, 9 "host" : "192.168.133.44:27017", 10 "arbiterOnly" : false, 11 "buildIndexes" : true, 12 "hidden" : false, 13 "priority" : 1, 14 "tags" : { 15 16 }, 17 "slaveDelay" : NumberLong(0), 18 "votes" : 1 19 }, 20 { 21 "_id" : 1, 22 "host" : "192.168.133.88:27017", 23 "arbiterOnly" : false, 24 "buildIndexes" : true, 25 "hidden" : false, 26 "priority" : 1, 27 "tags" : { 28 29 }, 30 "slaveDelay" : NumberLong(0), 31 "votes" : 1 32 }, 33 { 34 "_id" : 2, 35 "host" : "192.168.133.66:27017", 36 "arbiterOnly" : false, 37 "buildIndexes" : true, 38 "hidden" : false, 39 "priority" : 1, 40 "tags" : { 41 42 }, 43 "slaveDelay" : NumberLong(0), 44 "votes" : 1 45 } 46 ], 47 "settings" : { 48 "chainingAllowed" : true, 49 "heartbeatIntervalMillis" : 2000, 50 "heartbeatTimeoutSecs" : 10, 51 "electionTimeoutMillis" : 10000, 52 "catchUpTimeoutMillis" : -1, 53 "catchUpTakeoverDelayMillis" : 30000, 54 "getLastErrorModes" : { 55 56 }, 57 "getLastErrorDefaults" : { 58 "w" : 1, 59 "wtimeout" : 0 60 }, 61 "replicaSetId" : ObjectId("5ac4143306d5c156f4c42cd9") 62 } 63} 64mongodbslave:PRIMARY>
2.模拟宕机，过了一会儿发现02变成主了（因为权重都是1这个主是随机的）
1[root@centos-01 ~]# iptables -I INPUT -p tcp --dport 27017 -j DROP 2[root@centos-02 ~]# mongo 3MongoDB shell version v3.6.3 4connecting to: mongodb://127.0.0.1:27017 5MongoDB server version: 3.6.3 6Server has startup warnings: 72018-04-08T23:52:57.455+0800 I CONTROL [initandlisten] 82018-04-08T23:52:57.456+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database. 92018-04-08T23:52:57.456+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted. 102018-04-08T23:52:57.457+0800 I CONTROL [initandlisten] 112018-04-08T23:52:57.457+0800 I CONTROL [initandlisten] 122018-04-08T23:52:57.458+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'. 132018-04-08T23:52:57.458+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 142018-04-08T23:52:57.459+0800 I CONTROL [initandlisten] 152018-04-08T23:52:57.459+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. 162018-04-08T23:52:57.460+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 172018-04-08T23:52:57.460+0800 I CONTROL [initandlisten] 18mongodbslave:PRIMARY>
3.设置新的权重
1[root@centos-01 ~]# iptables -D INPUT -p tcp --dport 27017 -j DROP 2 3mongodbslave:PRIMARY> cfg=rs.conf() 4{ 5 "_id" : "mongodbslave", 6 "version" : 1, 7 "protocolVersion" : NumberLong(1), 8 "members" : [ 9 { 10 "_id" : 0, 11 "host" : "192.168.133.44:27017", 12 "arbiterOnly" : false, 13 "buildIndexes" : true, 14 "hidden" : false, 15 "priority" : 1, 16 "tags" : { 17 18 }, 19 "slaveDelay" : NumberLong(0), 20 "votes" : 1 21 }, 22 { 23 "_id" : 1, 24 "host" : "192.168.133.88:27017", 25 "arbiterOnly" : false, 26 "buildIndexes" : true, 27 "hidden" : false, 28 "priority" : 1, 29 "tags" : { 30 31 }, 32 "slaveDelay" : NumberLong(0), 33 "votes" : 1 34 }, 35 { 36 "_id" : 2, 37 "host" : "192.168.133.66:27017", 38 "arbiterOnly" : false, 39 "buildIndexes" : true, 40 "hidden" : false, 41 "priority" : 1, 42 "tags" : { 43 44 }, 45 "slaveDelay" : NumberLong(0), 46 "votes" : 1 47 } 48 ], 49 "settings" : { 50 "chainingAllowed" : true, 51 "heartbeatIntervalMillis" : 2000, 52 "heartbeatTimeoutSecs" : 10, 53 "electionTimeoutMillis" : 10000, 54 "catchUpTimeoutMillis" : -1, 55 "catchUpTakeoverDelayMillis" : 30000, 56 "getLastErrorModes" : { 57 58 }, 59 "getLastErrorDefaults" : { 60 "w" : 1, 61 "wtimeout" : 0 62 }, 63 "replicaSetId" : ObjectId("5ac4143306d5c156f4c42cd9") 64 } 65} 66mongodbslave:PRIMARY> cfg.members[0].priority = 3 673 68mongodbslave:PRIMARY> cfg.members[1].priority = 2 692 70mongodbslave:PRIMARY> cfg.members[2].priority = 1 711 72mongodbslave:PRIMARY> rs.reconfig(cfg) 73{ 74 "ok" : 1, 75 "operationTime" : Timestamp(1523234054, 33), 76 "$clusterTime" : { 77 "clusterTime" : Timestamp(1523234054, 33), 78 "signature" : { 79 "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="), 80 "keyId" : NumberLong(0) 81 } 82 } 83} 84mongodbslave:PRIMARY> rs.config() 85{ 86 "_id" : "mongodbslave", 87 "version" : 2, 88 "protocolVersion" : NumberLong(1), 89 "members" : [ 90 { 91 "_id" : 0, 92 "host" : "192.168.133.44:27017", 93 "arbiterOnly" : false, 94 "buildIndexes" : true, 95 "hidden" : false, 96 "priority" : 3, 97 "tags" : { 98 99 }, 100 "slaveDelay" : NumberLong(0), 101 "votes" : 1 102 }, 103 { 104 "_id" : 1, 105 "host" : "192.168.133.88:27017", 106 "arbiterOnly" : false, 107 "buildIndexes" : true, 108 "hidden" : false, 109 "priority" : 2, 110 "tags" : { 111 112 }, 113 "slaveDelay" : NumberLong(0), 114 "votes" : 1 115 }, 116 { 117 "_id" : 2, 118 "host" : "192.168.133.66:27017", 119 "arbiterOnly" : false, 120 "buildIndexes" : true, 121 "hidden" : false, 122 "priority" : 1, 123 "tags" : { 124 125 }, 126 "slaveDelay" : NumberLong(0), 127 "votes" : 1 128 } 129 ], 130 "settings" : { 131 "chainingAllowed" : true, 132 "heartbeatIntervalMillis" : 2000, 133 "heartbeatTimeoutSecs" : 10, 134 "electionTimeoutMillis" : 10000, 135 "catchUpTimeoutMillis" : -1, 136 "catchUpTakeoverDelayMillis" : 30000, 137 "getLastErrorModes" : { 138 139 }, 140 "getLastErrorDefaults" : { 141 "w" : 1, 142 "wtimeout" : 0 143 }, 144 "replicaSetId" : ObjectId("5ac4143306d5c156f4c42cd9") 145 } 146} 147mongodbslave:PRIMARY>
mongodb分片介绍
mongodb分片搭建
1.三台机器分别创建mongos的日志和其他目录
1[root@centos-01 ~]# mkdir -p /data/mongodb/mongos/log 2[root@centos-01 ~]# mkdir -p /data/mongodb/config/{data,log} 3[root@centos-01 ~]# mkdir -p /data/mongodb/shard1/{data,log} 4[root@centos-01 ~]# mkdir -p /data/mongodb/shard2/{data,log} 5[root@centos-01 ~]# mkdir -p /data/mongodb/shard3/{data,log} 6[root@centos-01 ~]# 7 8[root@centos-02 ~]# mkdir -p /data/mongodb/mongos/log 9[root@centos-02 ~]# mkdir -p /data/mongodb/config/{data,log} 10[root@centos-02 ~]# mkdir -p /data/mongodb/shard1/{data,log} 11[root@centos-02 ~]# mkdir -p /data/mongodb/shard2/{data,log} 12[root@centos-02 ~]# mkdir -p /data/mongodb/shard3/{data,log} 13[root@centos-02 ~]# 14 15[root@centos-03 ~]# mkdir -p /data/mongodb/mongos/log 16[root@centos-03 ~]# mkdir -p /data/mongodb/config/{data,log} 17[root@centos-03 ~]# mkdir -p /data/mongodb/shard1/{data,log} 18[root@centos-03 ~]# mkdir -p /data/mongodb/shard2/{data,log} 19[root@centos-03 ~]# mkdir -p /data/mongodb/shard3/{data,log} 20[root@centos-03 ~]#
1.创建配置文件的目录
1[root@centos-01 ~]# mkdir /etc/mongod/ 2[root@centos-01 ~]# 3[root@centos-02 ~]# mkdir /etc/mongod/ 4[root@centos-02 ~]# 5[root@centos-03 ~]# mkdir /etc/mongod/ 6[root@centos-03 ~]#
2.编辑configserver的配置文件
1[root@centos-01 ~]# vim /etc/mongod/config.conf 2[root@centos-01 ~]# 3pidfilepath = /var/run/mongodb/configsrv.pid 4dbpath = /data/mongodb/config/data 5logpath = /data/mongodb/config/log/congigsrv.log 6logappend = true 7bind_ip = 192.168.133.44 8port = 21000 9fork = true 10configsvr = true #declare this is a config db of a cluster; 11replSet=configs #副本集名称 12maxConns=20000 #设置最大连接数 13 14[root@centos-02 ~]# vim /etc/mongod/config.conf 15[root@centos-02 ~]# 16pidfilepath = /var/run/mongodb/configsrv.pid 17dbpath = /data/mongodb/config/data 18logpath = /data/mongodb/config/log/congigsrv.log 19logappend = true 20bind_ip = 192.168.133.88 21port = 21000 22fork = true 23configsvr = true #declare this is a config db of a cluster; 24replSet=configs #副本集名称 25maxConns=20000 #设置最大连接数 26 27[root@centos-03 ~]# vim /etc/mongod/config.conf 28[root@centos-03 ~]# 29pidfilepath = /var/run/mongodb/configsrv.pid 30dbpath = /data/mongodb/config/data 31logpath = /data/mongodb/config/log/congigsrv.log 32logappend = true 33bind_ip = 192.168.133.66 34port = 21000 35fork = true 36configsvr = true #declare this is a config db of a cluster; 37replSet=configs #副本集名称 38maxConns=20000 #设置最大连接数
1.启动三台机器的config服务
1[root@centos-01 ~]# mongod -f /etc/mongod/config.conf 2about to fork child process, waiting until server is ready for connections. 3forked process: 5513 4child process started successfully, parent exiting 5[root@centos-01 ~]# ps aux|grep mongo 6mongod 1838 5.4 7.1 1602768 71468 ? Sl 20:05 5:17 /usr/bin/mongod -f /etc/mongod.conf 7root 5513 41.8 4.5 1074840 45552 ? Sl 21:41 0:14 mongod -f /etc/mongod/config.conf 8root 5553 11.0 0.0 112668 932 pts/0 S+ 21:41 0:00 grep --color=auto mong 9[root@centos-01 ~]# 10 11[root@centos-01 ~]# netstat -lntp|grep mongod 12tcp 0 0 192.168.133.44:21000 0.0.0.0:* LISTEN 5513/mongod 13tcp 0 0 192.168.133.44:27017 0.0.0.0:* LISTEN 1838/mongod 14tcp 0 0 127.0.0.1:27017 0.0.0.0:* LISTEN 1838/mongod 15[root@centos-01 ~]# 16 17[root@centos-02 ~]# mongod -f /etc/mongod/config.conf 18about to fork child process, waiting until server is ready for connections. 19forked process: 3095 20child process started successfully, parent exiting 21[root@centos-02 ~]# ps aux|grep mongod 22mongod 1327 3.7 9.2 1512172 92884 ? Sl 20:17 3:19 /usr/bin/mongod -f /etc/mongod.conf 23root 3095 31.1 5.0 1074480 50864 ? Sl 21:46 0:05 mongod -f /etc/mongod/config.conf 24root 3127 10.0 0.0 112684 948 pts/0 R+ 21:46 0:00 grep --color=auto mongod 25[root@centos-02 ~]# netstat -lntp|grep mongod 26tcp 0 0 192.168.133.88:21000 0.0.0.0:* LISTEN 3095/mongod 27tcp 0 0 192.168.133.88:27017 0.0.0.0:* LISTEN 1327/mongod 28tcp 0 0 127.0.0.1:27017 0.0.0.0:* LISTEN 1327/mongod 29[root@centos-02 ~]# 30 31[root@centos-03 ~]# mongod -f /etc/mongod/config.conf 32about to fork child process, waiting until server is ready for connections. 33forked process: 10596 34child process started successfully, parent exiting 35[root@centos-03 ~]# ps aux|grep mongod 36mongod 6498 4.7 9.7 1630304 97188 ? Sl 18:59 8:04 /usr/bin/mongod -f /etc/mongod.conf 37root 10596 36.4 4.5 1071180 45568 ? Sl 21:48 0:06 mongod -f /etc/mongod/config.conf 38root 10632 0.0 0.0 112668 928 pts/0 S+ 21:48 0:00 grep --color=auto mongod 39[root@centos-03 ~]# netstat -lntp|grep mongod 40tcp 0 0 192.168.133.66:21000 0.0.0.0:* LISTEN 10596/mongod 41tcp 0 0 192.168.133.66:27017 0.0.0.0:* LISTEN 6498/mongod 42tcp 0 0 127.0.0.1:27017 0.0.0.0:* LISTEN 6498/mongod 43[root@centos-03 ~]#
2.初始化副本集
1[root@centos-01 ~]# mongo --host 192.168.133.44 --port 21000 2MongoDB shell version v3.6.3 3connecting to: mongodb://192.168.133.44:21000/ 4MongoDB server version: 3.6.3 5Server has startup warnings: 62018-04-09T21:41:22.102+0800 I CONTROL [initandlisten] 72018-04-09T21:41:22.103+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database. 82018-04-09T21:41:22.104+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted. 92018-04-09T21:41:22.104+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended. 102018-04-09T21:41:22.104+0800 I CONTROL [initandlisten] 112018-04-09T21:41:22.148+0800 I CONTROL [initandlisten] 122018-04-09T21:41:22.149+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'. 132018-04-09T21:41:22.149+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 142018-04-09T21:41:22.150+0800 I CONTROL [initandlisten] 152018-04-09T21:41:22.151+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. 162018-04-09T21:41:22.151+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 172018-04-09T21:41:22.151+0800 I CONTROL [initandlisten] 18> config = { _id: "configs", members: [ {_id : 0, host : "192.168.133.44:21000"},{_id : 1, host : "192.168.133.88:21000"},{_id : 2, host : "192.168.133.66:21000"}] } 19{ 20 "_id" : "configs", 21 "members" : [ 22 { 23 "_id" : 0, 24 "host" : "192.168.133.44:21000" 25 }, 26 { 27 "_id" : 1, 28 "host" : "192.168.133.88:21000" 29 }, 30 { 31 "_id" : 2, 32 "host" : "192.168.133.66:21000" 33 } 34 ] 35} 36> rs.initiate(config) 37{ 38 "ok" : 1, 39 "operationTime" : Timestamp(1523282429, 1), 40 "$gleStats" : { 41 "lastOpTime" : Timestamp(1523282429, 1), 42 "electionId" : ObjectId("000000000000000000000000") 43 }, 44 "$clusterTime" : { 45 "clusterTime" : Timestamp(1523282429, 1), 46 "signature" : { 47 "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="), 48 "keyId" : NumberLong(0) 49 } 50 } 51}
3.查看下状态
1configs:OTHER> rs.status() 2{ 3 "set" : "configs", 4 "date" : ISODate("2018-04-09T14:02:16.668Z"), 5 "myState" : 1, 6 "term" : NumberLong(1), 7 "configsvr" : true, 8 "heartbeatIntervalMillis" : NumberLong(2000), 9 "optimes" : { 10 "lastCommittedOpTime" : { 11 "ts" : Timestamp(1523282518, 1), 12 "t" : NumberLong(1) 13 }, 14 "readConcernMajorityOpTime" : { 15 "ts" : Timestamp(1523282518, 1), 16 "t" : NumberLong(1) 17 }, 18 "appliedOpTime" : { 19 "ts" : Timestamp(1523282518, 1), 20 "t" : NumberLong(1) 21 }, 22 "durableOpTime" : { 23 "ts" : Timestamp(1523282518, 1), 24 "t" : NumberLong(1) 25 } 26 }, 27 "members" : [ 28 { 29 "_id" : 0, 30 "name" : "192.168.133.44:21000", 31 "health" : 1, 32 "state" : 1, 33 "stateStr" : "PRIMARY", 34 "uptime" : 1273, 35 "optime" : { 36 "ts" : Timestamp(1523282518, 1), 37 "t" : NumberLong(1) 38 }, 39 "optimeDate" : ISODate("2018-04-09T14:01:58Z"), 40 "infoMessage" : "could not find member to sync from", 41 "electionTime" : Timestamp(1523282475, 1), 42 "electionDate" : ISODate("2018-04-09T14:01:15Z"), 43 "configVersion" : 1, 44 "self" : true 45 }, 46 { 47 "_id" : 1, 48 "name" : "192.168.133.88:21000", 49 "health" : 1, 50 "state" : 2, 51 "stateStr" : "SECONDARY", 52 "uptime" : 106, 53 "optime" : { 54 "ts" : Timestamp(1523282518, 1), 55 "t" : NumberLong(1) 56 }, 57 "optimeDurable" : { 58 "ts" : Timestamp(1523282518, 1), 59 "t" : NumberLong(1) 60 }, 61 "optimeDate" : ISODate("2018-04-09T14:01:58Z"), 62 "optimeDurableDate" : ISODate("2018-04-09T14:01:58Z"), 63 "lastHeartbeat" : ISODate("2018-04-09T14:02:16.135Z"), 64 "lastHeartbeatRecv" : ISODate("2018-04-09T14:02:15.510Z"), 65 "pingMs" : NumberLong(37), 66 "syncingTo" : "192.168.133.44:21000", 67 "configVersion" : 1 68 }, 69 { 70 "_id" : 2, 71 "name" : "192.168.133.66:21000", 72 "health" : 1, 73 "state" : 2, 74 "stateStr" : "SECONDARY", 75 "uptime" : 106, 76 "optime" : { 77 "ts" : Timestamp(1523282518, 1), 78 "t" : NumberLong(1) 79 }, 80 "optimeDurable" : { 81 "ts" : Timestamp(1523282518, 1), 82 "t" : NumberLong(1) 83 }, 84 "optimeDate" : ISODate("2018-04-09T14:01:58Z"), 85 "optimeDurableDate" : ISODate("2018-04-09T14:01:58Z"), 86 "lastHeartbeat" : ISODate("2018-04-09T14:02:14.987Z"), 87 "lastHeartbeatRecv" : ISODate("2018-04-09T14:02:16.232Z"), 88 "pingMs" : NumberLong(45), 89 "syncingTo" : "192.168.133.44:21000", 90 "configVersion" : 1 91 } 92 ], 93 "ok" : 1, 94 "operationTime" : Timestamp(1523282518, 1), 95 "$gleStats" : { 96 "lastOpTime" : Timestamp(1523282429, 1), 97 "electionId" : ObjectId("7fffffff0000000000000001") 98 }, 99 "$clusterTime" : { 100 "clusterTime" : Timestamp(1523282518, 1), 101 "signature" : { 102 "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="), 103 "keyId" : NumberLong(0) 104 } 105 } 106}
4.下面配置mongos和三个shard
1[root@centos-01 ~]# vim /etc/mongod/shard1.conf 2pidfilepath = /var/run/mongodb/shard1.pid 3dbpath = /data/mongodb/shard1/data 4logpath = /data/mongodb/shard1/log/shard1.log 5logappend = true 6bind_ip = 0.0.0.0 7port = 27001 8fork = true 9httpinterface=true #打开web监控 10rest=true 11replSet=shard1 #副本集名称 12shardsvr = true #declare this is a shard db of a cluster; 13maxConns=20000 #设置最大连接数 14 15[root@centos-02 ~]# vim /etc/mongod/shard1.conf 16pidfilepath = /var/run/mongodb/shard1.pid 17dbpath = /data/mongodb/shard1/data 18logpath = /data/mongodb/shard1/log/shard1.log 19logappend = true 20bind_ip = 0.0.0.0 21port = 27001 22fork = true 23httpinterface=true #打开web监控 24rest=true 25replSet=shard1 #副本集名称 26shardsvr = true #declare this is a shard db of a cluster; 27maxConns=20000 #设置最大连接数 28 29[root@centos-03 ~]# vim /etc/mongod/shard1.conf 30pidfilepath = /var/run/mongodb/shard1.pid 31dbpath = /data/mongodb/shard1/data 32logpath = /data/mongodb/shard1/log/shard1.log 33logappend = true 34bind_ip = 0.0.0.0 35port = 27001 36fork = true 37httpinterface=true #打开web监控 38rest=true 39replSet=shard1 #副本集名称 40shardsvr = true #declare this is a shard db of a cluster; 41maxConns=20000 #设置最大连接数 42 43[root@centos-01 ~]# cd /etc/mongod/ 44[root@centos-01 mongod]# cp shard1.conf shard2.conf 45[root@centos-01 mongod]# cp shard1.conf shard3.conf 46[root@centos-01 mongod]# sed -i 's/shard1/shard2/g' shard2.conf 47[root@centos-01 mongod]# sed -i 's/shard1/shard3/g' shard3.conf 48[root@centos-01 mongod]# cat !$ 49cat shard3.conf 50pidfilepath = /var/run/mongodb/shard3.pid 51dbpath = /data/mongodb/shard3/data 52logpath = /data/mongodb/shard3/log/shard3.log 53logappend = true 54bind_ip = 0.0.0.0 55port = 27001 56fork = true 57httpinterface=true #打开web监控 58rest=true 59replSet=shard3 #副本集名称 60shardsvr = true #declare this is a shard db of a cluster; 61maxConns=20000 #设置最大连接数 62 63[root@centos-01 mongod]# 64 65[root@centos-01 mongod]# scp shard2.conf shard3.conf 192.168.133.88:/etc/mongod/ 66The authenticity of host '192.168.133.88 (192.168.133.88)' can't be established. 67ECDSA key fingerprint is bf:dc:4b:e3:1c:99:f4:12:6f:d0:a8:e0:13:8a:d0:dd. 68Are you sure you want to continue connecting (yes/no)? yes 69Warning: Permanently added '192.168.133.88' (ECDSA) to the list of known hosts. 70root@192.168.133.88's password: 71shard2.conf 100% 358 0.4KB/s 00:00 72shard3.conf 100% 358 0.4KB/s 00:00 73[root@centos-01 mongod]# scp shard2.conf shard3.conf 192.168.133.66:/etc/mongod/ 74The authenticity of host '192.168.133.66 (192.168.133.66)' can't be established. 75ECDSA key fingerprint is bf:dc:4b:e3:1c:99:f4:12:6f:d0:a8:e0:13:8a:d0:dd. 76Are you sure you want to continue connecting (yes/no)? yes 77Warning: Permanently added '192.168.133.66' (ECDSA) to the list of known hosts. 78root@192.168.133.66's password: 79shard2.conf 100% 358 0.4KB/s 00:00 80shard3.conf 100% 358 0.4KB/s 00:00 81[root@centos-01 mongod]#
1.启动服务，搭建副本集（3.6版本的需要把配置文件中的httpinterface和rest注释掉）
1[root@centos-01 mongod]# mongod -f /etc/mongod/shard1.conf 2about to fork child process, waiting until server is ready for connections. 3forked process: 6581 4child process started successfully, parent exiting 5[root@centos-01 mongod]# 6 7[root@centos-02 ~]# mongod -f /etc/mongod/shard1.conf 8about to fork child process, waiting until server is ready for connections. 9forked process: 3338 10child process started successfully, parent exiting 11[root@centos-02 ~]# 12 13[root@centos-03 ~]# mongod -f /etc/mongod/shard1.conf 14about to fork child process, waiting until server is ready for connections. 15forked process: 11921 16child process started successfully, parent exiting 17[root@centos-03 ~]#
2.搭建shard1的副本集
1> use admin 2switched to db admin 3> config = { _id: "shard1", members: [ {_id : 0, host : "192.168.133.44:27001"}, {_id: 1,host : "192.168.133.88:27001"},{_id : 2, host : "192.168.133.66:27001",arbiterOnly:true}] } 4{ 5 "_id" : "shard1", 6 "members" : [ 7 { 8 "_id" : 0, 9 "host" : "192.168.133.44:27001" 10 }, 11 { 12 "_id" : 1, 13 "host" : "192.168.133.88:27001" 14 }, 15 { 16 "_id" : 2, 17 "host" : "192.168.133.66:27001", 18 "arbiterOnly" : true 19 } 20 ] 21} 22> 23 24> rs.initiate(config) 25{ "ok" : 1 } 26shard1:OTHER> 27shard1:PRIMARY>
1.启动shard2
1[root@centos-02 ~]# mongod -f /etc/mongod/shard2.conf 2about to fork child process, waiting until server is ready for connections. 3forked process: 3554 4child process started successfully, parent exiting 5[root@centos-02 ~]# mongo --port 27002 6MongoDB shell version v3.6.3 7connecting to: mongodb://127.0.0.1:27002/ 8MongoDB server version: 3.6.3 9Server has startup warnings: 102018-04-09T23:31:24.947+0800 I CONTROL [initandlisten] 112018-04-09T23:31:24.950+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database. 122018-04-09T23:31:24.950+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted. 132018-04-09T23:31:24.950+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended. 142018-04-09T23:31:24.951+0800 I CONTROL [initandlisten] 152018-04-09T23:31:25.050+0800 I CONTROL [initandlisten] 162018-04-09T23:31:25.051+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'. 172018-04-09T23:31:25.052+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 182018-04-09T23:31:25.052+0800 I CONTROL [initandlisten] 192018-04-09T23:31:25.052+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. 202018-04-09T23:31:25.053+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 212018-04-09T23:31:25.053+0800 I CONTROL [initandlisten] 22> config = { _id: "shard2", members: [ {_id : 0, host : "192.168.133.44:27002" ,arbiterOnly:true},{_id : 1, host : "192.168.133.88:27002"},{_id : 2, host : "192.168.133.66:27002"}] } 23{ 24 "_id" : "shard2", 25 "members" : [ 26 { 27 "_id" : 0, 28 "host" : "192.168.133.44:27002", 29 "arbiterOnly" : true 30 }, 31 { 32 "_id" : 1, 33 "host" : "192.168.133.88:27002" 34 }, 35 { 36 "_id" : 2, 37 "host" : "192.168.133.66:27002" 38 } 39 ] 40} 41> rs.initiate(config) 42{ "ok" : 1 } 43shard2:OTHER> shard2:PRIMARY>
2.配置shard3
1[root@centos-01 mongod]# mongod -f /etc/mongod/shard3.conf 2about to fork child process, waiting until server is ready for connections. 3forked process: 7281 4[root@centos-02 ~]# mongod -f /etc/mongod/shard3.conf 5about to fork child process, waiting until server is ready for connections. 6forked process: 3653 7[root@centos-03 ~]# mongod -f /etc/mongod/shard3.conf 8about to fork child process, waiting until server is ready for connections. 9forked process: 12702
1.启动shard3
1[root@centos-03 ~]# mongod -f /etc/mongod/shard3.conf 2about to fork child process, waiting until server is ready for connections. 3forked process: 12702 4child process started successfully, parent exiting 5[root@centos-03 ~]# 6[root@centos-03 ~]# mongo --port 27003 7MongoDB shell version v3.6.3 8connecting to: mongodb://127.0.0.1:27003/ 9MongoDB server version: 3.6.3 10Server has startup warnings: 112018-04-09T23:38:13.623+0800 I CONTROL [initandlisten] 122018-04-09T23:38:13.625+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database. 132018-04-09T23:38:13.625+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted. 142018-04-09T23:38:13.625+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended. 152018-04-09T23:38:13.626+0800 I CONTROL [initandlisten] 162018-04-09T23:38:13.627+0800 I CONTROL [initandlisten] 172018-04-09T23:38:13.627+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'. 182018-04-09T23:38:13.627+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 192018-04-09T23:38:13.628+0800 I CONTROL [initandlisten] 202018-04-09T23:38:13.628+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. 212018-04-09T23:38:13.629+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 222018-04-09T23:38:13.629+0800 I CONTROL [initandlisten] 23> use admin 24switched to db admin 25> config = { _id: "shard3", members: [ {_id : 0, host : "192.168.133.44:27003"}, {_id : 1, host : "192.168.133.88:27003", arbiterOnly:true}, {_id : 2, host : "192.168.133.66:27003"}] } 26{ 27 "_id" : "shard3", 28 "members" : [ 29 { 30 "_id" : 0, 31 "host" : "192.168.133.44:27003" 32 }, 33 { 34 "_id" : 1, 35 "host" : "192.168.133.88:27003", 36 "arbiterOnly" : true 37 }, 38 { 39 "_id" : 2, 40 "host" : "192.168.133.66:27003" 41 } 42 ] 43} 44> rs.initiate(config) 45{ "ok" : 1 } 46shard3:OTHER> 47shard3:SECONDARY> 48shard3:SECONDARY> rs.status() 49{ 50 "set" : "shard3", 51 "date" : ISODate("2018-04-09T15:45:41.536Z"), 52 "myState" : 1, 53 "term" : NumberLong(1), 54 "heartbeatIntervalMillis" : NumberLong(2000), 55 "optimes" : { 56 "lastCommittedOpTime" : { 57 "ts" : Timestamp(1523288734, 1), 58 "t" : NumberLong(1) 59 }, 60 "readConcernMajorityOpTime" : { 61 "ts" : Timestamp(1523288734, 1), 62 "t" : NumberLong(1) 63 }, 64 "appliedOpTime" : { 65 "ts" : Timestamp(1523288737, 1), 66 "t" : NumberLong(1) 67 }, 68 "durableOpTime" : { 69 "ts" : Timestamp(1523288737, 1), 70 "t" : NumberLong(1) 71 } 72 }, 73 "members" : [ 74 { 75 "_id" : 0, 76 "name" : "192.168.133.44:27003", 77 "health" : 1, 78 "state" : 5, 79 "stateStr" : "STARTUP2", 80 "uptime" : 80, 81 "optime" : { 82 "ts" : Timestamp(1523288734, 1), 83 "t" : NumberLong(1) 84 }, 85 "optimeDurable" : { 86 "ts" : Timestamp(1523288734, 1), 87 "t" : NumberLong(1) 88 }, 89 "optimeDate" : ISODate("2018-04-09T15:45:34Z"), 90 "optimeDurableDate" : ISODate("2018-04-09T15:45:34Z"), 91 "lastHeartbeat" : ISODate("2018-04-09T15:45:41.157Z"), 92 "lastHeartbeatRecv" : ISODate("2018-04-09T15:45:40.902Z"), 93 "pingMs" : NumberLong(110), 94 "syncingTo" : "192.168.133.66:27003", 95 "configVersion" : 1 96 }, 97 { 98 "_id" : 1, 99 "name" : "192.168.133.88:27003", 100 "health" : 1, 101 "state" : 7, 102 "stateStr" : "ARBITER", 103 "uptime" : 80, 104 "lastHeartbeat" : ISODate("2018-04-09T15:45:41.170Z"), 105 "lastHeartbeatRecv" : ISODate("2018-04-09T15:45:36.949Z"), 106 "pingMs" : NumberLong(64), 107 "configVersion" : 1 108 }, 109 { 110 "_id" : 2, 111 "name" : "192.168.133.66:27003", 112 "health" : 1, 113 "state" : 1, 114 "stateStr" : "PRIMARY", 115 "uptime" : 519, 116 "optime" : { 117 "ts" : Timestamp(1523288737, 1), 118 "t" : NumberLong(1) 119 }, 120 "optimeDate" : ISODate("2018-04-09T15:45:37Z"), 121 "infoMessage" : "could not find member to sync from", 122 "electionTime" : Timestamp(1523288730, 1), 123 "electionDate" : ISODate("2018-04-09T15:45:30Z"), 124 "configVersion" : 1, 125 "self" : true 126 } 127 ], 128 "ok" : 1 129} 130shard3:PRIMARY>
1.为什么将mongos放到最后讲呢，因为mongos想要起来必须先知道configserver和三个shard副本集
2.配置mongos
1[root@centos-01 ~]# vim /etc/mongod/mongos.conf 2[root@centos-01 ~]# 3pidfilepath = /var/run/mongodb/mongos.pid 4logpath = /data/mongodb/mongos/log/mongos.log 5logappend = true 6bind_ip = 0.0.0.0 7port = 20000 8fork = true 9configdb = configs/192.168.133.44:21000,192.168.133.88:21000,192.168.133.66:21000 #监听的 10配置服务器,只能有1个或者3个，configs为配置服务器的副本集名字 11maxConns=20000 #设置最大连接数
3.三台机器都配置mongos
1[root@centos-01 ~]# scp /etc/mongod/mongos.conf 192.168.133.88:/etc/mongod/ 2root@192.168.133.88's password: 3mongos.conf 100% 364 0.4KB/s 00:00 4[root@centos-01 ~]# scp /etc/mongod/mongos.conf 192.168.133.66:/etc/mongod/ 5root@192.168.133.66's password: 6mongos.conf 100% 364 0.4KB/s 00:00 7[root@centos-01 ~]#
4.启动mongos
1[root@centos-01 ~]# mongos -f /etc/mongod/mongos.conf 2[root@centos-02 ~]# mongos -f /etc/mongod/mongos.conf 3[root@centos-03 ~]# mongos -f /etc/mongod/mongos.conf
1.登录任何一台机器的20000端口
2.把所有分片的路由器串联（注意IP前不要加空格）
3.查看状态（rs.status是查看副本集，sh.status是查看分片）
mongodb分片测试
1.登录任意一台20000端口
mongo --port 20000
2.执行sh.statas()
mongodb备份恢复
1.使用了分片了，备份的时候也需要到分片的这个端口里面去备份，创建要备份的文件夹并执行备份命令
2.备份所有的库
3.备份指定的集合
4.导出集合为json文件
5.恢复数据
1.如果恢复备份的文件是json用mongoimport命令否则用mongorestore，先删除库
2.执行恢复操作
3.查看是否恢复成功，结果库又恢复回来了
4.恢复指定库
