mongoDB3.0installedonRedHat-创新互联
官方安装手册
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安装完成后,登录出现如下告警:
1.登录mongo shell
[root@localhost ~]# mongo缺少openssl、libssh3
yum -y install openssl service mongod restart2.I use mongodb 3.0 and find a warning:
[root@localhost ~]# mongo MongoDB shell version: 3.0.1 connecting to: test Server has startup warnings: 2015-03-13T16:28:29.405+0800 I CONTROL [initandlisten] 2015-03-13T16:28:29.406+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'. 2015-03-13T16:28:29.406+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 2015-03-13T16:28:29.406+0800 I CONTROL [initandlisten] 2015-03-13T16:28:29.407+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. 2015-03-13T16:28:29.407+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 2015-03-13T16:28:29.407+0800 I CONTROL [initandlisten]solved:
vi /etc/init.d/mongod #行首添加 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 重启mongod service mongod restart3.Recommended ulimit Settings
Every deployment may have unique requirements and settings; however, the following thresholds and settings are particularly important for mongod and mongos deployments:
-f (file size): unlimited
-t (cpu time): unlimited
-v (virtual memory): unlimited [1]
-n (open files): 64000
-m (memory size): unlimited [1] [2]
-u (processes/threads): 64000
Always remember to restart your mongod and mongos instances after changing the ulimit settings to ensure that the changes take effect.
vi /etc/profile
在最后添加
ulimit -n 64000
ulimit -u 64000
source /etc/profile
2015-04-02T01:36:21.150-0700 I CONTROL [initandlisten] 2015-04-02T01:36:21.150-0700 I CONTROL [initandlisten] ** WARNING: soft rlimits too low. rlimits set to 1024 processes, 64000 files. Number of processes should be at least 32000 : 0.5 times number of files.另外有需要云服务器可以了解下创新互联cdcxhl.cn,海内外云服务器15元起步,三天无理由+7*72小时售后在线,公司持有idc许可证,提供“云服务器、裸金属服务器、高防服务器、香港服务器、美国服务器、虚拟主机、免备案服务器”等云主机租用服务以及企业上云的综合解决方案,具有“安全稳定、简单易用、服务可用性高、性价比高”等特点与优势,专为企业上云打造定制,能够满足用户丰富、多元化的应用场景需求。
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