mongodb 最新版本高可用解决方案-replica sets副本集部署详细过程

 

 

Mongodb副本集：

NoSQL的产生就是为了解决大数据量、高扩展性、高性能、灵活数据模型、高可用性。但是光通过主从模式的架构远远达不到上面几点，由此MongoDB设计了副本集和分片的功能，先来用用副本集。

 

Mongodb副本集的同步机制：

数据复制的目的是使数据得到最大的可用性，避免单点故障引起的整站不能访问的情况的发生，Mongodb的副本集在同一时刻只有一台服务器是可以写的，副本集的主从复制也是一个异步同步的过程，是slave端从primary端获取日志，然后在自己身上完全顺序的执行日志所记录的各种操作（该日志是不记录查询操作的），这个日志就是local数据库中的oplog.rs表，默认在64位机器上这个表是比较大的，占磁盘大小的5%，oplog.rs的大小可以在启动参数中设定：--oplogSize 1000,单位是M。

1，设置yum源安装

创建/etc/yum.repos.d/mongodb-enterprise.repo文件，这样就可以使用yum来安装mongodb了。

 

[mongodb-org-3.0] name=MongoDB Repository baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.0/x86_64/ gpgcheck=1 enabled=1 gpgkey=https://www.mongodb.org/static/pgp/server-3.0.asc

 

每一个release版本的.repo文件可以在repository找到，记住奇数镜像版本（比如e.g.2.5）是开发版本，放在生成环境是不太合适的。

 

 

2，源码安装

2.1 下载安装包

在官方网站可以下载到比较新的版本，下载地址：

https://www.mongodb.org/dr/fastdl.mongodb.org/linux/mongodb-linux-x86_64-3.2.3.tgz/download；

 

我这里下载的是稳定版本：mongodb-linux-x86_64-3.0.3.tgz，安装也是用的3.0.3； 3.0.3的下载地址为：http://download.csdn.net/detail/mchdba/9546256

 

 

2.2 解压安装

tar -xvf mongodb-linux-x86_64-3.0.3.tgz -C /usr/local/

 

 

3 启动3个mongodb服务

安装mongodbreplica sets，至少需要3台linux服务器，而初始化副本集合，本来应该是3台服务器，但是这里只是测试环境，启用了3个mongodb端口进程来来模拟3个mongodb的服务器达到一样的效果，在实际中，可以部署在多台mongodb服务器上，如下表所示：

Mongodb 主机	服务器端口地址	默认角色
mongodb主机 1	localhost:27017	primary
mongodb主机 2	localhost:27018	secondary
mongodb主机 3	localhost:27019	secondary

 

 

开始启动3个mongodb服务：

# 启动第一个mongodb 27017，默认为primary服务器 mkdir -p /data/mongodb/log27017 mkdir -p /data/mongodb/data27017 /usr/local/mongodb-linux-x86_64-3.0.3/bin/mongod --replSet repset --port 27017 --dbpath /data/mongodb/data27017 --oplogSize 2048 --logpath /data/mongodb/log27017/mongod.log &   # 启动第二个mongodb 27018 mkdir -p /data/mongodb/log27018 mkdir -p /data/mongodb/data27018 /usr/local/mongodb-linux-x86_64-3.0.3/bin/mongod --replSet repset --port 27018 --dbpath /data/mongodb/data27018 --oplogSize 2048 --logpath /data/mongodb/log27018/mongod.log &   # 启动第三个 mongodb 27019 mkdir -p /data/mongodb/log27019 mkdir -p /data/mongodb/data27019 /usr/local/mongodb-linux-x86_64-3.0.3/bin/mongod --replSet repset --port 27019 --dbpath /data/mongodb/data27019 --oplogSize 2048 --logpath /data/mongodb/log27019/mongod.log &

 

 

4 添加replica sets配置

在任何一台mongodb实例上登录，进入admin库，执行config命令：

> use admin switched to db admin > config = { _id:"repset", members:[ ... {_id:0,host:"mongodb_server:27017"}, ... {_id:1,host:"mongodb_server:27018"}, ... {_id:2,host:"mongodb_server:27019"}] ... };   > config = { _id:"repset", members:[ ... ... {_id:0,host:"mongodb_server:27017"}, ... ... {_id:1,host:"mongodb_server:27018"}, ... ... {_id:2,host:"mongodb_server:27019"}] ... ... }; {          "_id" : "repset",          "members" : [                    {                             "_id" : 0,                             "host" : "mongodb_server:27017"                                      },                    {                             "_id" : 1,                             "host" : "mongodb_server:27018"                    },                    {                             "_id" : 2,                             "host" : "mongodb_server:27019"                    }          ] } >

 

 

5 初始化副本集

# 初始化副本集配置，使用rs.initiate(config);命令

rs.initiate(config);

> rs.initiate(config);

{ "ok" : 1 }

repset:SECONDARY>

 

 

6 查看replica sets状态

看到config配置里面的第一个默认为primary，后面的都为secondary，然后查看"optime": Timestamp(1465641737, 1)，如果集合中的mongodb的optime一致，表是集群中各个mongodb数据是保持一致性的：

# 随意登录一个mongodb服务 [root@oracle_master ~]# /usr/local/mongodb-linux-x86_64-3.0.3/bin/mongo localhost:27017 MongoDB shell version: 3.0.3 connecting to: localhost:27017/test Server has startup warnings: 2016-06-10T07:56:33.333-0700 I CONTROL  [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended. 2016-06-10T07:56:33.333-0700 I CONTROL  [initandlisten] repset:PRIMARY> use admin switched to db admin repset:PRIMARY>   # 查看状态如下： repset:PRIMARY> rs.status(); {          "set" : "repset",          "date" : ISODate("2016-06-10T15:04:54.045Z"),          "myState" : 1,          "members" : [                    {                             "_id" : 0,                             "name" : "mongodb_server:27017",                             "health" : 1,                             "state" : 1,                             "stateStr" : "PRIMARY",                             "uptime" : 501,                             "optime" : Timestamp(1465571046, 1),                             "optimeDate" : ISODate("2016-06-10T15:04:06Z"),                             "electionTime" : Timestamp(1465571050, 1),                             "electionDate" : ISODate("2016-06-10T15:04:10Z"),                             "configVersion" : 1,                             "self" : true                    },                    {                             "_id" : 1,                             "name" : "mongodb_server:27018",                             "health" : 1,                             "state" : 2,                             "stateStr" : "SECONDARY",                             "uptime" : 47,                             "optime" : Timestamp(1465571046, 1),                             "optimeDate" : ISODate("2016-06-10T15:04:06Z"),                             "lastHeartbeat" : ISODate("2016-06-10T15:04:52.493Z"),                             "lastHeartbeatRecv" : ISODate("2016-06-10T15:04:52.612Z"),                             "pingMs" : 1,                             "configVersion" : 1                    },                    {                             "_id" : 2,                             "name" : "mongodb_server:27019",                             "health" : 1,                             "state" : 2,                             "stateStr" : "SECONDARY",                             "uptime" : 47,                             "optime" : Timestamp(1465571046, 1),                             "optimeDate" : ISODate("2016-06-10T15:04:06Z"),                             "lastHeartbeat" : ISODate("2016-06-10T15:04:52.642Z"),                             "lastHeartbeatRecv" : ISODate("2016-06-10T15:04:52.642Z"),                             "pingMs" : 0,                             "lastHeartbeatMessage" : "could not find member to sync from",                             "configVersion" : 1                    }          ],          "ok" : 1 } repset:PRIMARY>

 

 

7，查看后台日志

可以看到27107的mongodb默认成为了primary，而27018和27019的成为了secondary了：

[root@oracle_master ~]# tail -f /data/mongodb/log27017/mongod.log 2016-06-11T03:42:19.664-0700 I REPL     [ReplicationExecutor] replSet election succeeded, assuming primary role 2016-06-11T03:42:19.664-0700 I REPL     [ReplicationExecutor] transition to PRIMARY 2016-06-11T03:42:19.686-0700 I REPL     [ReplicationExecutor] Member mongodb_server:27019 is now in state STARTUP2 2016-06-11T03:42:19.738-0700 I REPL     [rsSync] transition to primary complete; database writes are now permitted 2016-06-11T03:42:22.798-0700 I NETWORK  [initandlisten] connection accepted from 192.168.136.128:18197 #6 (4 connections now open) 2016-06-11T03:42:22.812-0700 I NETWORK  [initandlisten] connection accepted from 192.168.136.128:18198 #7 (5 connections now open) 2016-06-11T03:42:22.849-0700 I NETWORK  [conn6] end connection 192.168.136.128:18197 (4 connections now open) 2016-06-11T03:42:22.906-0700 I NETWORK  [conn7] end connection 192.168.136.128:18198 (3 connections now open) 2016-06-11T03:42:23.668-0700 I REPL     [ReplicationExecutor] Member mongodb_server:27018 is now in state SECONDARY 2016-06-11T03:42:23.689-0700 I REPL     [ReplicationExecutor] Member mongodb_server:27019 is now in state SECONDARY

 

 

8，验证replica sets 数据一致性

（1）先进去主库primary的mongodb上，录入数据：

# 登录primary主库 [root@oracle_master mongodb]# /usr/local/mongodb-linux-x86_64-3.0.3/bin/mongo localhost:27017 MongoDB shell version: 3.0.3 connecting to: localhost:27017/test Server has startup warnings: 2016-06-11T03:41:07.938-0700 I CONTROL  [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended. 2016-06-11T03:41:07.938-0700 I CONTROL  [initandlisten] repset:PRIMARY> # 录入数据 repset:PRIMARY> use yes_db; switched to db yes_db repset:PRIMARY> db.yes_users.insert({"uid":"20160611_0001"},{"uname":"tim.man"}); WriteResult({ "nInserted" : 1 }) repset:PRIMARY>

 

 

（2）去第一个备库27018上，验证数据，有了yes_users表的数据，如下：

[root@oracle_master mongodb]# /usr/local/mongodb-linux-x86_64-3.0.3/bin/mongo localhost:27018 MongoDB shell version: 3.0.3 connecting to: localhost:27018/test Server has startup warnings: 2016-06-11T03:41:14.305-0700 I CONTROL  [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended. 2016-06-11T03:41:14.305-0700 I CONTROL  [initandlisten] repset:SECONDARY> use yes_db; switched to db yes_db repset:SECONDARY> show tables; 2016-06-11T04:03:02.088-0700 E QUERY    Error: listCollections failed: { "note" : "from execCommand", "ok" : 0, "errmsg" : "not master" }     at Error (<anonymous>)     at DB._getCollectionInfosCommand (src/mongo/shell/db.js:646:15)     at DB.getCollectionInfos (src/mongo/shell/db.js:658:20)     at DB.getCollectionNames (src/mongo/shell/db.js:669:17)     at shellHelper.show (src/mongo/shell/utils.js:625:12)     at shellHelper (src/mongo/shell/utils.js:524:36) at (shellhelp2):1:1 at src/mongo/shell/db.js:646 # mongodb默认是从主节点读写数据的，副本节点上不允许读，需要设置副本节点可以读。 repset:SECONDARY> db.getMongo().setSlaveOk(); repset:SECONDARY> show tables; system.indexes yes_users repset:SECONDARY> db.yes_users.find();   # 看到有数据了 { "_id" : ObjectId("575bef8126150b8de92029eb"), "uid" : "20160611_0001" } repset:SECONDARY>

 

 

（3）去第二个secondary备库27019上，检查数据是否已经复制过来：

[root@oracle_master mongodb]# /usr/local/mongodb-linux-x86_64-3.0.3/bin/mongo localhost:27019 MongoDB shell version: 3.0.3 connecting to: localhost:27019/test Server has startup warnings: 2016-06-11T03:41:20.363-0700 I CONTROL  [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended. 2016-06-11T03:41:20.363-0700 I CONTROL  [initandlisten] repset:SECONDARY> use yes_db switched to db yes_db repset:SECONDARY> db.getMongo().setSlaveOk();# mongodb默认是从主节点读写数据的，副本节点上不允许读，需要设置副本节点可以读。 repset:SECONDARY> db.yes_users.find();# 看到有数据了，数据已经复制过来。 { "_id" : ObjectId("575bef8126150b8de92029eb"), "uid" : "20160611_0001" } repset:SECONDARY>

 

 

9，验证primary、secondary自动切换

9.1 自动切换示意图

官方介绍：https://docs.mongodb.com/master/core/replica-set-high-availability/

Replica Set High Availability   Replica sets provide high availability using automatic failover. Failover allows a secondary member to become primary if the current primary becomes unavailable.

 

 

9.2 验证自动切换操作

当primary不可用，则自动将合适的secondary成员切换成新的primary，接下来的(1)-> (5)就来验证这个：

 

（1）      关闭27017的mongod服务，即停止primary主库：

[root@oracle_master mongodb]# /usr/local/mongodb-linux-x86_64-3.0.3/bin/mongo localhost:27017 MongoDB shell version: 3.0.3 connecting to: localhost:27017/test Server has startup warnings: 2016-06-11T03:41:07.938-0700 I CONTROL  [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended. 2016-06-11T03:41:07.938-0700 I CONTROL  [initandlisten] repset:PRIMARY> use admin switched to db admin repset:PRIMARY> db.shutdownServer(); 2016-06-11T04:18:24.148-0700 I NETWORK  DBClientCursor::init call() failed server should be down... 2016-06-11T04:18:24.151-0700 I NETWORK  trying reconnect to localhost:27017 (127.0.0.1) failed 2016-06-11T04:18:24.152-0700 I NETWORK  reconnect localhost:27017 (127.0.0.1) ok 2016-06-11T04:18:24.437-0700 I NETWORK  Socket recv() errno:104 Connection reset by peer 127.0.0.1:27017 2016-06-11T04:18:24.437-0700 I NETWORK  SocketException: remote: 127.0.0.1:27017 error: 9001 socket exception [RECV_ERROR] server [127.0.0.1:27017] 2016-06-11T04:18:24.437-0700 I NETWORK  DBClientCursor::init call() failed 2016-06-11T04:18:24.440-0700 I NETWORK  trying reconnect to localhost:27017 (127.0.0.1) failed 2016-06-11T04:18:24.441-0700 W NETWORK  Failed to connect to 127.0.0.1:27017, reason: errno:111 Connection refused 2016-06-11T04:18:24.441-0700 I NETWORK  reconnect localhost:27017 (127.0.0.1) failed failed couldn't connect to server localhost:27017 (127.0.0.1), connection attempt failed >

 

 

 

（2）      登录原来的主库primary库的mongodb，就会报错：

 

[root@oracle_master mongodb]# /usr/local/mongodb-linux-x86_64-3.0.3/bin/mongo localhost:27017 MongoDB shell version: 3.0.3 connecting to: localhost:27017/test 2016-06-11T04:20:40.597-0700 W NETWORK  Failed to connect to 127.0.0.1:27017, reason: errno:111 Connection refused 2016-06-11T04:20:40.614-0700 E QUERY    Error: couldn't connect to server localhost:27017 (127.0.0.1), connection attempt failed     at connect (src/mongo/shell/mongo.js:181:14)     at (connect):1:6 at src/mongo/shell/mongo.js:181 exception: connect failed [root@oracle_master mongodb]#

 

 

（3）      primary自动切换到下一个mongodb服务，即27018端口的mongodb为primary服务：

[root@oracle_master mongodb]# /usr/local/mongodb-linux-x86_64-3.0.3/bin/mongo localhost:27018 MongoDB shell version: 3.0.3 connecting to: localhost:27018/test Server has startup warnings: 2016-06-11T03:41:14.305-0700 I CONTROL  [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended. 2016-06-11T03:41:14.305-0700 I CONTROL  [initandlisten] repset:PRIMARY> rs.status(); {          "set" : "repset",          "date" : ISODate("2016-06-11T11:20:50.730Z"),          "myState" : 1,          "members" : [                    {                             "_id" : 0,                             "name" : "mongodb_server:27017",                             "health" : 0,                             "state" : 8,                             "stateStr" : "(not reachable/healthy)",                             "uptime" : 0,                             "optime" : Timestamp(0, 0),                             "optimeDate" : ISODate("1970-01-01T00:00:00Z"),                             "lastHeartbeat" : ISODate("2016-06-11T11:20:50.467Z"),                             "lastHeartbeatRecv" : ISODate("2016-06-11T11:18:22.616Z"),                             "pingMs" : 6,                             "lastHeartbeatMessage" : "Failed attempt to connect to mongodb_server:27017; couldn't connect to server mongodb_server:27017 (192.168.136.128), connection attempt failed",                             "configVersion" : -1                    },                    {                             "_id" : 1,                             "name" : "mongodb_server:27018",                             "health" : 1,                             "state" : 1,                             "stateStr" : "PRIMARY",                             "uptime" : 2377,                             "optime" : Timestamp(1465642881, 2),                             "optimeDate" : ISODate("2016-06-11T11:01:21Z"),                             "electionTime" : Timestamp(1465643906, 1),                             "electionDate" : ISODate("2016-06-11T11:18:26Z"),                             "configVersion" : 1,                             "self" : true                    },                    {                             "_id" : 2,                             "name" : "mongodb_server:27019",                             "health" : 1,                             "state" : 2,                             "stateStr" : "SECONDARY",                             "uptime" : 2312,                             "optime" : Timestamp(1465642881, 2),                             "optimeDate" : ISODate("2016-06-11T11:01:21Z"),                             "lastHeartbeat" : ISODate("2016-06-11T11:20:50.177Z"),                             "lastHeartbeatRecv" : ISODate("2016-06-11T11:20:50.718Z"),                             "pingMs" : 0,                             "configVersion" : 1                    }          ],          "ok" : 1 } repset:PRIMARY>

 

 

 

（4）在27018的后台log里面，也可以看到这一切换记录：

2016-06-11T04:18:25.647-0700 I REPL     [ReplicationExecutor] Standing for election 2016-06-11T04:18:25.649-0700 W NETWORK  [ReplExecNetThread-6] Failed to connect to 192.168.136.128:27017, reason: errno:111 Connection refused 2016-06-11T04:18:25.649-0700 I REPL     [ReplicationExecutor] replSet possible election tie; sleeping 848ms until 2016-06-11T04:18:26.497-0700 2016-06-11T04:18:25.650-0700 I REPL     [ReplicationExecutor] Error in heartbeat request to mongodb_server:27017; Location18915 Failed attempt to connect to mongodb_server:27017; couldn't connect to server mongodb_server:27017 (192.168.136.128), connection attempt faile d 2016-06-11T04:18:25.650-0700 W NETWORK  [ReplExecNetThread-6] Failed to connect to 192.168.136.128:27017, reason: errno:111 Connection refused 2016-06-11T04:18:25.650-0700 I REPL     [ReplicationExecutor] Error in heartbeat request to mongodb_server:27017; Location18915 Failed attempt to connect to mongodb_server:27017; couldn't connect to server mongodb_server:27017 (192.168.136.128), connection attempt faile d 2016-06-11T04:18:26.497-0700 I REPL     [ReplicationExecutor] Standing for election 2016-06-11T04:18:26.500-0700 I REPL     [ReplicationExecutor] replSet info electSelf 2016-06-11T04:18:26.502-0700 I REPL     [ReplicationExecutor] replSet election succeeded, assuming primary role 2016-06-11T04:18:26.502-0700 I REPL     [ReplicationExecutor] transition to PRIMARY 2016-06-11T04:18:27.333-0700 I REPL     [rsSync] transition to primary complete; database writes are now permitted

 

 

（5）再启动原来旧的primary库27017端口的mongodb（如果是实际上的坏了就是修复后启动），27017就会自动变成secondary状态。

 

 

看到后台mongodb日志：

2016-06-11T04:28:33.979-0700 I NETWORK  [initandlisten] connection accepted from 192.168.136.128:11453 #170 (2 connections now open) 2016-06-11T04:28:33.979-0700 I NETWORK  [conn170] end connection 192.168.136.128:11453 (1 connection now open) 2016-06-11T04:28:33.992-0700 I NETWORK  [initandlisten] connection accepted from 192.168.136.128:11454 #171 (2 connections now open) 2016-06-11T04:28:35.422-0700 I REPL     [ReplicationExecutor] Member mongodb_server:27017 is now in state SECONDARY 2016-06-11T04:28:55.672-0700 I NETWORK  [conn169] end connection 192.168.136.128:11424 (1 connection now open) 2016-06-11T04:28:55.673-0700 I NETWORK  [initandlisten] connection accepted from 192.168.136.128:11459 #172 (2 connections now open)

 

 

再查看replica sets状态：

[root@oracle_master mongodb]# /usr/local/mongodb-linux-x86_64-3.0.3/bin/mongo localhost:27018 MongoDB shell version: 3.0.3 connecting to: localhost:27018/test Server has startup warnings: 2016-06-11T03:41:14.305-0700 I CONTROL  [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended. 2016-06-11T03:41:14.305-0700 I CONTROL  [initandlisten] repset:PRIMARY> rs.status(); {          "set" : "repset",          "date" : ISODate("2016-06-11T11:30:00.192Z"),          "myState" : 1,          "members" : [                    {                             "_id" : 0,                             "name" : "mongodb_server:27017",                             "health" : 1,                             "state" : 2,                             "stateStr" : "SECONDARY",                             "uptime" : 85,                             "optime" : Timestamp(1465642881, 2),                             "optimeDate" : ISODate("2016-06-11T11:01:21Z"),                             "lastHeartbeat" : ISODate("2016-06-11T11:29:58.752Z"),                             "lastHeartbeatRecv" : ISODate("2016-06-11T11:29:58.263Z"),                             "pingMs" : 0,                             "configVersion" : 1                    },                    {                             "_id" : 1,                             "name" : "mongodb_server:27018",                             "health" : 1,                             "state" : 1,                             "stateStr" : "PRIMARY",                             "uptime" : 2927,                             "optime" : Timestamp(1465642881, 2),                             "optimeDate" : ISODate("2016-06-11T11:01:21Z"),                             "electionTime" : Timestamp(1465643906, 1),                             "electionDate" : ISODate("2016-06-11T11:18:26Z"),                             "configVersion" : 1,                             "self" : true                    },                    {                             "_id" : 2,                             "name" : "mongodb_server:27019",                             "health" : 1,                             "state" : 2,                             "stateStr" : "SECONDARY",                             "uptime" : 2862,                             "optime" : Timestamp(1465642881, 2),                             "optimeDate" : ISODate("2016-06-11T11:01:21Z"),                             "lastHeartbeat" : ISODate("2016-06-11T11:29:59.858Z"),                             "lastHeartbeatRecv" : ISODate("2016-06-11T11:29:59.804Z"),                             "pingMs" : 0,                             "configVersion" : 1                    }          ],          "ok" : 1 } repset:PRIMARY>

 

至此，验证完成，和理论上示意图上面说的效果是一致的，mongodb的replica sets可以实现高可用解决方案。

 

10，启动报错

Secondary库启动报错，如下所示：

[root@oracle_master log27018]# more /data/mongodb/log27018/mongod.log 2016-06-11T02:44:32.326-0700 I JOURNAL  [initandlisten] journal dir=/data/mongodb/data27018/journal 2016-06-11T02:44:32.326-0700 I JOURNAL  [initandlisten] recover : no journal files present, no recovery needed 2016-06-11T02:44:32.326-0700 I JOURNAL  [initandlisten] 2016-06-11T02:44:32.326-0700 E JOURNAL  [initandlisten] Insufficient free space for journal files 2016-06-11T02:44:32.326-0700 I JOURNAL  [initandlisten] Please make at least 3379MB available in /data/mongodb/data27018/journal or use --smallfiles 2016-06-11T02:44:32.326-0700 I JOURNAL  [initandlisten] 2016-06-11T02:44:32.327-0700 I STORAGE  [initandlisten] exception in initAndListen: 15926 Insufficient free space for journals, terminating 2016-06-11T02:44:32.327-0700 W REPL     [initandlisten] ReplicationCoordinatorImpl::shutdown() called before startReplication() finished.  Shutting down without cleaning up the replication system 2016-06-11T02:44:32.327-0700 I CONTROL  [initandlisten] now exiting 2016-06-11T02:44:32.327-0700 I NETWORK  [initandlisten] shutdown: going to close listening sockets... 2016-06-11T02:44:32.327-0700 I NETWORK  [initandlisten] removing socket file: /tmp/mongodb-27018.sock 2016-06-11T02:44:32.327-0700 I NETWORK  [initandlisten] shutdown: going to flush diaglog... 2016-06-11T02:44:32.327-0700 I NETWORK  [initandlisten] shutdown: going to close sockets... 2016-06-11T02:44:32.327-0700 I STORAGE  [initandlisten] shutdown: waiting for fs preallocator... 2016-06-11T02:44:32.327-0700 I STORAGE  [initandlisten] shutdown: final commit... 2016-06-11T02:44:32.327-0700 I STORAGE  [initandlisten] shutdown: closing all files... 2016-06-11T02:44:32.327-0700 I STORAGE  [initandlisten] closeAllFiles() finished 2016-06-11T02:44:32.327-0700 I CONTROL  [initandlisten] dbexit:  rc: 100 [root@oracle_master log27018]#

 

解决：

看到Please make at least3379MB available in /data/mongodb/data27018/journal or use –smallfiles，所以清理下磁盘空间，磁盘至少要保证有30G以上的空间才行。

 

 

网友段书峰blog地址：blog.itpub.net/15498