更新 '数据库/mongodb/mongo单机扩展为集群.md'

数据库/mongodb/mongo单机扩展为集群.md

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+* 注意：生产中一定要备份好数据，防止扩容过程中操作失误，导致数据丢失 *
+## 单节点配置信息
+```txt
+# mongod.conf
+
+# for documentation of all options, see:
+#   http://docs.mongodb.org/manual/reference/configuration-options/
+
+# where to write logging data.
+systemLog:
+  destination: file
+  logAppend: true
+  path: /var/log/mongodb/mongod.log
+
+# Where and how to store data.
+storage:
+#  dbPath: /var/lib/mongo
+  dbPath: /DATAQIKU/mongodata
+  journal:
+    enabled: true
+#  engine:
+#  mmapv1:
+#  wiredTiger:
+
+# how the process runs
+processManagement:
+  fork: true  # fork and run in background
+  pidFilePath: /var/run/mongodb/mongod.pid  # location of pidfile
+  timeZoneInfo: /usr/share/zoneinfo
+
+# network interfaces
+net:
+  port: 27017
+#  bindIp: 127.0.0.1  # Enter 0.0.0.0,:: to bind to all IPv4 and IPv6 addresses or, alternatively, use the net.bindIpAll setting.
+  bindIp: 10.100.21.89
+
+security:
+  authorization: enabled
+
+#operationProfiling:
+
+# replication:
+
+#sharding:
+
+## Enterprise-Only Options
+
+#auditLog:
+
+#snmp:
+```
+## 修改配置文件
+```txt
+# mongod.conf
+
+# for documentation of all options, see:
+#   http://docs.mongodb.org/manual/reference/configuration-options/
+
+# where to write logging data.
+systemLog:
+  destination: file
+  logAppend: true
+  path: /var/log/mongodb/mongod.log
+
+# Where and how to store data.
+storage:
+#  dbPath: /var/lib/mongo
+  dbPath: /DATAQIKU/mongodata
+  journal:
+    enabled: true
+#  engine:
+#  mmapv1:
+#  wiredTiger:
+
+# how the process runs
+processManagement:
+  fork: true  # fork and run in background
+  pidFilePath: /var/run/mongodb/mongod.pid  # location of pidfile
+  timeZoneInfo: /usr/share/zoneinfo
+
+# network interfaces
+net:
+  port: 27017
+#  bindIp: 127.0.0.1  # Enter 0.0.0.0,:: to bind to all IPv4 and IPv6 addresses or, alternatively, use the net.bindIpAll setting.
+  bindIp: 10.100.21.89
+
+# 暂时注释安全配置
+#security:
+#  authorization: enabled
+
+#operationProfiling:
+
+# 副本配置，增加如下配置项
+replication:
+  oplogSizeMB: 4096
+  replSetName: rs0
+
+#sharding:
+
+## Enterprise-Only Options
+
+#auditLog:
+
+#snmp:
+```
+## 备机配置
+    安装与主机版本一致的mongo。
+### 备机1
+配置文件如下：
+```txt
+# mongod.conf
+
+# for documentation of all options, see:
+#   http://docs.mongodb.org/manual/reference/configuration-options/
+
+# where to write logging data.
+systemLog:
+  destination: file
+  logAppend: true
+  path: /data/mongo-1/mongod.log
+
+# Where and how to store data.
+storage:
+  dbPath: /data/mongo-1/data
+  journal:
+    enabled: true
+#  engine:
+#  wiredTiger:
+
+# how the process runs
+processManagement:
+  fork: true  # fork and run in background
+  pidFilePath: /data/mongo-1/mongod.pid  # location of pidfile
+  timeZoneInfo: /usr/share/zoneinfo
+
+# network interfaces
+net:
+  port: 27018
+  bindIp: 0.0.0.0  # Enter 0.0.0.0,:: to bind to all IPv4 and IPv6 addresses or, alternatively, use the net.bindIpAll setting.
+
+
+security:
+  keyFile: /data/mongo.keyfile
+  authorization: enabled
+
+#operationProfiling:
+
+replication:
+  oplogSizeMB: 4096
+  replSetName: rs0
+
+#sharding:
+
+## Enterprise-Only Options
+
+#auditLog:
+
+#snmp:
+```
+### 备机2
+配置文件如下：
+```txt
+# mongod.conf
+
+# for documentation of all options, see:
+#   http://docs.mongodb.org/manual/reference/configuration-options/
+
+# where to write logging data.
+systemLog:
+  destination: file
+  logAppend: true
+  path: /data/mongo-2/mongod.log
+
+# Where and how to store data.
+storage:
+  dbPath: /data/mongo-2/data
+  journal:
+    enabled: true
+#  engine:
+#  wiredTiger:
+
+# how the process runs
+processManagement:
+  fork: true  # fork and run in background
+  pidFilePath: /data/mongo-2/mongod.pid  # location of pidfile
+  timeZoneInfo: /usr/share/zoneinfo
+
+# network interfaces
+net:
+  port: 27019
+  bindIp: 0.0.0.0  # Enter 0.0.0.0,:: to bind to all IPv4 and IPv6 addresses or, alternatively, use the net.bindIpAll setting.
+
+
+#security:
+#  authorization: enabled
+
+#operationProfiling:
+
+replication:
+  oplogSizeMB: 4096
+  replSetName: rs0
+
+#sharding:
+
+## Enterprise-Only Options
+
+#auditLog:
+
+#snmp:
+```
+## 启动mongo
+```txt
+mongod -f /etc/mongod.conf
+```
+## 初始化副本
+### 登录mongo
+    三节点之一
+```shell
+# 以原节点为例
+mongo --host 10.100.21.89
+```
+### 初始化rs
+```shell
+# 切换到admin
+use admin
+# 节点配置
+conf={"_id":"rs0","members":[{"_id":0,"host":"10.100.21.89:27017"},{"_id":1,"host": "10.100.21.43:27018"},{"_id":2,"host": "10.100.21.44:27019"}]}
+# 初始化
+rs.initiate(conf) 
+# 查看集群状态
+rs.status()
+# 查看延时从库信息
+rs.printSlaveReplicationInfo()
+# 查看集群与主节点
+rs.isMaster()
+```
+## 集群开启认证
+### 创建超级管理用户
+    需要在主节点创建一个超级管理用户，若已创建，可以忽略
+```shell
+# 假设已登录主节点
+use admin
+db.createUser({user: "admin",pwd: "mDBAmgdb@",roles:[ { role: "root", db:"admin"}]})
+```
+### 创建keyfil文件
+    keyfile文件复制到三个节点上
+```shell
+$ openssl rand -base64 90 -out /data/mongo.keyfile
+```
+## 修改如下配置
+```txt
+security:
+  keyFile: /data/mongo.keyfile
+  authorization: enabled
+```
+## 重启各节点mongo