MongoDB警告信息
MongoDB警告信息：
1. WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
2. WARNING: Access control is not enabled for the database.
3. WARNING: /sys/kernel/mm/transparent_hugepage/enabled is ‘always’.
4. WARNING: /sys/kernel/mm/transparent_hugepage/defrag is ‘always’.
1.WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine（强烈建议使用带WiredTiger存储引擎的XFS文件系统）
报这个错是因为我的虚拟环境使用的是EXT4文件系统，官方不建议，但不影响使用
在Linux上运行MongoDB时，官方建议使用Linux内核版本2.6.36或更高版本，使用XFS或EXT4文件系统。 如果可能，最好使用XFS，因为它通常与MongoDB表现更好。
使用WiredTiger存储引擎，强烈建议使用XFS，以避免在使用EXT4与WiredTiger时可能发生的性能问题。
使用MMAPv1存储引擎，MongoDB在使用它们之前预先分配其数据库文件，并经常创建大文件。 因此，官方建议使用XFS或EXT4文件系统。 如果可能，请使用XFS，因为它通常与MongoDB表现更好。
2.WARNING: Access control is not enabled for the database.（数据库未启用访问控制）
报这个错是因为MongoDB需要有一个安全库来开启数据库访问控制
在MongoDB部署上启用访问控制会强制执行身份验证，要求用户识别自己。当访问启用了访问控制的MongoDB部署时，用户只能执行由其角色确定的操作。
- 不使用访问控制模式开启mongdb
root@localhost ~]# mongod --dbpath /var/lib/mongo
--27T03::14.853+ I CONTROL [initandlisten] MongoDB starting : pid= port= dbpath=/var/lib/mongo -bit host=localhost.localdomain
--27T03::14.853+ I CONTROL [initandlisten] db version v3.4.9
--27T03::14.853+ I CONTROL [initandlisten] git version: 876ebee8c7dd0e2d992f36a848ff4dc50ee6603e
--27T03::14.853+ I CONTROL [initandlisten] OpenSSL version: OpenSSL 1.0.1e-fips Feb
--27T03::14.853+ I CONTROL [initandlisten] allocator: tcmalloc
--27T03::14.853+ I CONTROL [initandlisten] modules: none
--27T03::14.853+ I CONTROL [initandlisten] build environment:
--27T03::14.853+ I CONTROL [initandlisten] distmod: rhel70
--27T03::14.853+ I CONTROL [initandlisten] distarch: x86_64
--27T03::14.853+ I CONTROL [initandlisten] target_arch: x86_64
--27T03::14.853+ I CONTROL [initandlisten] options: { storage: { dbPath: "/var/lib/mongo" } }
--27T03::14.971+ I - [initandlisten] Detected data files in /var/lib/mongo created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.
--27T03::14.971+ I STORAGE [initandlisten]
--27T03::14.971+ I STORAGE [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
--27T03::14.971+ I STORAGE [initandlisten] ** See http://dochub.mongodb.org/core/prodnotes-filesystem
--27T03::14.971+ I STORAGE [initandlisten] wiredtiger_open config: create,cache_size=1455M,session_max=,eviction=(threads_min=,threads_max=),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=),checkpoint=(wait=,log_size=2GB),statistics_log=(wait=),
--27T03::16.364+ I CONTROL [initandlisten]
--27T03::16.364+ I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
--27T03::16.364+ I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
--27T03::16.364+ I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
--27T03::16.364+ I CONTROL [initandlisten]
--27T03::16.365+ I CONTROL [initandlisten]
--27T03::16.365+ I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
--27T03::16.365+ I CONTROL [initandlisten] ** We suggest setting it to 'never'
--27T03::16.365+ I CONTROL [initandlisten]
--27T03::16.365+ I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
--27T03::16.365+ I CONTROL [initandlisten] ** We suggest setting it to 'never'
--27T03::16.365+ I CONTROL [initandlisten]
--27T03::16.634+ I FTDC [initandlisten] Initializing full-time diagnostic data capture with directory '/var/lib/mongo/diagnostic.data'
--27T03::16.635+ I NETWORK [thread1] waiting for connections on port
--27T03::33.704+ I NETWORK [thread1] connection accepted from 127.0.0.1: # ( connection now open)
--27T03::33.705+ I NETWORK [conn1] received client metadata from 127.0.0.1: conn1: { application: { name: "MongoDB Shell" }, driver: { name: "MongoDB Internal Client", version: "3.4.9" }, os: { type: "Linux", name: "CentOS Linux release 7.3.1611 (Core) ", architecture: "x86_64", version: "Kernel 3.10.0-514.26.2.el7.x86_64" } }
--27T03::15.311+ I COMMAND [conn1] command admin.system.users appName: "MongoDB Shell" command: insert { insert: "system.users", documents: [ { _id: "admin.myUserAdmin", user: "myUserAdmin", db: "admin", credentials: { SCRAM-SHA-: { iterationCount: , salt: "pUdmLObMsG3wKU7MZDFU1g==", storedKey: "wlCaAzPOS+u7CUqzMKxeZB+DFkE=", serverKey: "KwP12FF1ASziFPVstN8mLrPLg+A=" } }, roles: [ { role: "userAdminAnyDatabase", db: "admin" } ] } ] } ninserted: keysInserted: numYields: reslen: locks:{ Global: { acquireCount: { r: , w: } }, Database: { acquireCount: { W: } }, Collection: { acquireCount: { w: } } } protocol:op_query 145ms
--27T03::15.311+ I COMMAND [conn1] command admin.$cmd appName: "MongoDB Shell" command: createUser { createUser: "myUserAdmin", pwd: "xxx", roles: [ { role: "userAdminAnyDatabase", db: "admin" } ], digestPassword: false, writeConcern: { w: "majority", wtimeout: 600000.0 } } numYields: reslen: locks:{ Global: { acquireCount: { r: , w: } }, Database: { acquireCount: { W: } }, Collection: { acquireCount: { w: } } } protocol:op_command 202ms
- 连接到instance
[root@localhost ~]# mongo
MongoDB shell version v3.4.9
connecting to: mongodb://127.0.0.1:27017
MongoDB server version: 3.4.
Server has startup warnings:
--27T03::14.971+ I STORAGE [initandlisten]
--27T03::14.971+ I STORAGE [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
--27T03::14.971+ I STORAGE [initandlisten] ** See http://dochub.mongodb.org/core/prodnotes-filesystem
--27T03::16.364+ I CONTROL [initandlisten]
--27T03::16.364+ I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
--27T03::16.364+ I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
--27T03::16.364+ I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
--27T03::16.364+ I CONTROL [initandlisten]
--27T03::16.365+ I CONTROL [initandlisten]
--27T03::16.365+ I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
--27T03::16.365+ I CONTROL [initandlisten] ** We suggest setting it to 'never'
--27T03::16.365+ I CONTROL [initandlisten]
--27T03::16.365+ I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
--27T03::16.365+ I CONTROL [initandlisten] ** We suggest setting it to 'never'
--27T03::16.365+ I CONTROL [initandlisten]
>
- 在admin数据库中创建administrator 用户
> use admin
switched to db admin
> db.createUser(
... {
... user: "myUserAdmin",
... pwd: "abc123",
... roles: [ { role: "userAdminAnyDatabase", db: "admin" } ]
... }
... )
Successfully added user: {
"user" : "myUserAdmin",
"roles" : [
{
"role" : "userAdminAnyDatabase",
"db" : "admin"
}
]
}
> exit
bye
- 重启Mongodb
使用Ctrl+c退出原mongod q^H
^C2017--27T03::25.685+ I CONTROL [signalProcessingThread] got signal (Interrupt), will terminate after current cmd ends
--27T03::25.685+ I NETWORK [signalProcessingThread] shutdown: going to close listening sockets...
--27T03::25.685+ I NETWORK [signalProcessingThread] closing listening socket:
--27T03::25.685+ I NETWORK [signalProcessingThread] closing listening socket:
--27T03::25.685+ I NETWORK [signalProcessingThread] removing socket file: /tmp/mongodb-.sock
--27T03::25.685+ I NETWORK [signalProcessingThread] shutdown: going to flush diaglog...
--27T03::25.685+ I FTDC [signalProcessingThread] Shutting down full-time diagnostic data capture
--27T03::25.687+ I STORAGE [signalProcessingThread] WiredTigerKVEngine shutting down
--27T03::25.770+ I STORAGE [signalProcessingThread] shutdown: removing fs lock...
--27T03::25.770+ I CONTROL [signalProcessingThread] now exiting
--27T03::25.770+ I CONTROL [signalProcessingThread] shutting down with code:
- 开启访问控制启动Mongod
[root@localhost ~]# mongod --auth --dbpath /var/lib/mongo
--27T03::40.034+ I CONTROL [initandlisten] MongoDB starting : pid= port= dbpath=/var/lib/mongo -bit host=localhost.localdomain
--27T03::40.034+ I CONTROL [initandlisten] db version v3.4.9
--27T03::40.034+ I CONTROL [initandlisten] git version: 876ebee8c7dd0e2d992f36a848ff4dc50ee6603e
--27T03::40.034+ I CONTROL [initandlisten] OpenSSL version: OpenSSL 1.0.1e-fips Feb
--27T03::40.034+ I CONTROL [initandlisten] allocator: tcmalloc
--27T03::40.034+ I CONTROL [initandlisten] modules: none
--27T03::40.034+ I CONTROL [initandlisten] build environment:
--27T03::40.034+ I CONTROL [initandlisten] distmod: rhel70
--27T03::40.034+ I CONTROL [initandlisten] distarch: x86_64
--27T03::40.034+ I CONTROL [initandlisten] target_arch: x86_64
--27T03::40.034+ I CONTROL [initandlisten] options: { security: { authorization: "enabled" }, storage: { dbPath: "/var/lib/mongo" } }
--27T03::40.054+ I - [initandlisten] Detected data files in /var/lib/mongo created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.
--27T03::40.054+ I STORAGE [initandlisten]
--27T03::40.054+ I STORAGE [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
--27T03::40.054+ I STORAGE [initandlisten] ** See http://dochub.mongodb.org/core/prodnotes-filesystem
--27T03::40.054+ I STORAGE [initandlisten] wiredtiger_open config: create,cache_size=1455M,session_max=,eviction=(threads_min=,threads_max=),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=),checkpoint=(wait=,log_size=2GB),statistics_log=(wait=),
--27T03::40.420+ I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
--27T03::40.420+ I CONTROL [initandlisten]
--27T03::40.420+ I CONTROL [initandlisten]
--27T03::40.420+ I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
--27T03::40.420+ I CONTROL [initandlisten] ** We suggest setting it to 'never'
--27T03::40.420+ I CONTROL [initandlisten]
--27T03::40.420+ I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
--27T03::40.420+ I CONTROL [initandlisten] ** We suggest setting it to 'never'
--27T03::40.420+ I CONTROL [initandlisten]
--27T03::40.422+ I FTDC [initandlisten] Initializing full-time diagnostic data capture with directory '/var/lib/mongo/diagnostic.data'
--27T03::40.422+ I NETWORK [thread1] waiting for connections on port
--27T03::07.458+ I NETWORK [thread1] connection accepted from 127.0.0.1: # ( connection now open)
--27T03::07.458+ I NETWORK [conn1] received client metadata from 127.0.0.1: conn1: { application: { name: "MongoDB Shell" }, driver: { name: "MongoDB Internal Client", version: "3.4.9" }, os: { type: "Linux", name: "CentOS Linux release 7.3.1611 (Core) ", architecture: "x86_64", version: "Kernel 3.10.0-514.26.2.el7.x86_64" } }
--27T03::07.477+ I ACCESS [conn1] Successfully authenticated as principal myUserAdmin on admin
--27T03::07.478+ I ACCESS [conn1] Unauthorized: not authorized on admin to execute command { getLog: "startupWarnings" }
--27T03::07.665+ I ACCESS [conn1] Unauthorized: not authorized on admin to execute command { replSetGetStatus: 1.0, forShell: 1.0 }
--27T03::26.104+ I - [conn1] end connection 127.0.0.1: ( connection now open)
--27T03::29.697+ I NETWORK [thread1] connection accepted from 127.0.0.1: # ( connection now open)
--27T03::29.697+ I NETWORK [conn2] received client metadata from 127.0.0.1: conn2: { application: { name: "MongoDB Shell" }, driver: { name: "MongoDB Internal Client", version: "3.4.9" }, os: { type: "Linux", name: "CentOS Linux release 7.3.1611 (Core) ", architecture: "x86_64", version: "Kernel 3.10.0-514.26.2.el7.x86_64" } }
--27T03::29.713+ I ACCESS [conn2] Successfully authenticated as principal myTester on test
--27T03::29.714+ I ACCESS [conn2] Unauthorized: not authorized on admin to execute command { getLog: "startupWarnings" }
--27T03::29.715+ I ACCESS [conn2] Unauthorized: not authorized on admin to execute command { replSetGetStatus: 1.0, forShell: 1.0 }
- 刚刚新建的用户myUserAdmin连接数据
[root@localhost ~]# mongo --port -u "myUserAdmin" -p "abc123" --authenticationDatabase "admin"
MongoDB shell version v3.4.9
connecting to: mongodb://127.0.0.1:27017/
MongoDB server version: 3.4.
>
创建新数据库test并在其中创建用户myTester > use test
switched to db test
> db.createUser(
... {
... user: "myTester",
... pwd: "xyz123",
... roles: [ { role: "readWrite", db: "test" },
... { role: "read", db: "reporting" } ]
... }
... )
Successfully added user: {
"user" : "myTester",
"roles" : [
{
"role" : "readWrite",
"db" : "test"
},
{
"role" : "read",
"db" : "reporting"
}
]
}
> exit
bye
- 使用新建的myTester用户连接数据库
[root@localhost ~]# mongo --port -u "myTester" -p "xyz123" --authenticationDatabase "test"
MongoDB shell version v3.4.9
connecting to: mongodb://127.0.0.1:27017/
MongoDB server version: 3.4.
3.WARNING: /sys/kernel/mm/transparent_hugepage/enabled is ‘always’.与4.WARNING: /sys/kernel/mm/transparent_hugepage/defrag is ‘always’.
这两个问题是CentOS7特有的，因为从CentOS7版本开始会默认启用Transparent Huge Pages(THP)
Transparent Huge Pages(THP)本意是用来提升内存性能，但某些数据库厂商还是建议直接关闭THP(比如说Oracle、MariaDB、MongoDB等)，否则可能会导致性能出现下降。
- 查看THP状态
[root@localhost ~]# cat /sys/kernel/mm/transparent_hugepage/defrag
[always] madvise never
[root@localhost ~]# cat /sys/kernel/mm/transparent_hugepage/enabled
[always] madvise never
- 修改系统配置
[root@localhost ~]# vim /etc/rc.d/rc.local #!/bin/bash
# THIS FILE IS ADDED FOR COMPATIBILITY PURPOSES
#
# It is highly advisable to create own systemd services or udev rules
# to run scripts during boot instead of using this file.
#
# In contrast to previous versions due to parallel execution during boot
# this script will NOT be run after all other services.
#
# Please note that you must run 'chmod +x /etc/rc.d/rc.local' to ensure
# that this script will be executed during boot. touch /var/lock/subsys/local if test -f /sys/kernel/mm/transparent_hugepage/enabled; then
echo never > /sys/kernel/mm/transparent_hugepage/enabled
fi
if test -f /sys/kernel/mm/transparent_hugepage/defrag; then
echo never > /sys/kernel/mm/transparent_hugepage/defrag
fi [root@localhost ~]# chmod +x /etc/rc.d/rc.local
- 重启虚拟机
[root@localhost ~]# shutdown -r
- 再次查看THP状态
[root@localhost ~]# cat /sys/kernel/mm/transparent_hugepage/defrag
always madvise [never]
[root@localhost ~]# cat /sys/kernel/mm/transparent_hugepage/enabled
always madvise [never]
已经改为了禁用THP
- 启动mongod
[root@localhost ~]# mongod --auth --dbpath /var/lib/mongo
--27T03::50.174+ I CONTROL [initandlisten] MongoDB starting : pid= port= dbpath=/var/lib/mongo -bit host=localhost.localdomain
--27T03::50.175+ I CONTROL [initandlisten] db version v3.4.9
--27T03::50.175+ I CONTROL [initandlisten] git version: 876ebee8c7dd0e2d992f36a848ff4dc50ee6603e
--27T03::50.175+ I CONTROL [initandlisten] OpenSSL version: OpenSSL 1.0.1e-fips Feb
--27T03::50.175+ I CONTROL [initandlisten] allocator: tcmalloc
--27T03::50.175+ I CONTROL [initandlisten] modules: none
--27T03::50.175+ I CONTROL [initandlisten] build environment:
--27T03::50.175+ I CONTROL [initandlisten] distmod: rhel70
--27T03::50.175+ I CONTROL [initandlisten] distarch: x86_64
--27T03::50.175+ I CONTROL [initandlisten] target_arch: x86_64
--27T03::50.175+ I CONTROL [initandlisten] options: { security: { authorization: "enabled" }, storage: { dbPath: "/var/lib/mongo" } }
--27T03::50.195+ I - [initandlisten] Detected data files in /var/lib/mongo created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.
--27T03::50.195+ I STORAGE [initandlisten]
--27T03::50.195+ I STORAGE [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
--27T03::50.195+ I STORAGE [initandlisten] ** See http://dochub.mongodb.org/core/prodnotes-filesystem
--27T03::50.195+ I STORAGE [initandlisten] wiredtiger_open config: create,cache_size=1455M,session_max=,eviction=(threads_min=,threads_max=),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=),checkpoint=(wait=,log_size=2GB),statistics_log=(wait=),
--27T03::50.689+ I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
--27T03::50.689+ I CONTROL [initandlisten]
--27T03::50.692+ I FTDC [initandlisten] Initializing full-time diagnostic data capture with directory '/var/lib/mongo/diagnostic.data'
--27T03::50.693+ I NETWORK [thread1] waiting for connections on port
- 进入数据库
[root@localhost ~]# mongo
MongoDB shell version v3.4.9
connecting to: mongodb://127.0.0.1:27017
MongoDB server version: 3.4.
>
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