centos7 安装mongo ./mongod: error while loading shared libraries: libnetsnmpmibs.so.31:

迈不过友情╰ 2022-05-26 04:17 598阅读 0赞

入坑两次：第二次几近崩溃，容我吐槽一下，以表明治。。

问题是这：

NETWORK  [thread1] Failed to connect to 127.0.0.1:27017, in(checking socket for error after poll), reason: errno:111 Connection refused
    ./mongod: error while loading shared libraries: libnetsnmpmibs.so.31: cannot open shared object file: No such file or directory

第一次是2018年2月3号；今天是2018年4月24，时隔近3个月，由于ECS到期要迭代原因，所有东西重装，两次都是tar.gz安装mongo, data目录db与logs/mongodb.log已创建好，mongo.conf如下

# 设置数据文件的存放目录
    dbpath = /alex/data/mongo/mongo3.2.15/data/db
    # 设置日志文件的存放目录及其日志文件名
    logpath = /alex/data/mongo/mongo3.2.15/data/logs/mongodb.log
    # 设置端口号（默认的端口号是 27017）
    port = 27017 
    # 设置为以守护进程的方式运行，即在后台运行
    fork = true
    # nohttpinterface = true
    nohttpinterface = true
    #登录验证
    #noauth=false

问题开始出现~2：

操作步骤：1

[root@alex /alex/data/mongo/mongo3.2.15/bin]$ ./mongo
    MongoDB shell version: 3.2.15
    connecting to: test
    2018-04-24T21:53:16.940+0800 W NETWORK[thread1] Failed to connect to 127.0.0.1:27017, in(checking socket for error after poll), reason: errno:111 Connection refused
    2018-04-24T21:53:16.940+0800 E QUERY    [thread1] Error: couldn't connect to server 127.0.0.1:27017, connection attempt failed :
    connect@src/mongo/shell/mongo.js:229:14
    @(connect):1:6
    
    exception: connect failed

不服：进行操作步骤2

[root@alex /alex/data/mongo/mongo3.2.15]$ ./bin/mongod --dbpath=/alex/data/mongo/mongo3.2.15/data/db/
    ./bin/mongod: error while loading shared libraries: libnetsnmpmibs.so.31: cannot open shared object file: No such file or directory
    [root@alex /alex/data/mongo/mongo3.2.15]$ cd bin/
    [root@alex /alex/data/mongo/mongo3.2.15/bin]$ ./mongod --dbpath=/alex/data/mongo/mongo3.2.15/data/db/
    ./mongod: error while loading shared libraries: libnetsnmpmibs.so.31: cannot open shared object file: No such file or directory
    [root@alex /alex/data/mongo/mongo3.2.15/bin]$ vim mongo.conf 
    [root@alex /alex/data/mongo/mongo3.2.15/bin]$ ./mongod --dbpath=/alex/data/mongo/mongo3.2.15/data/db/^C
    [root@alex /alex/data/mongo/mongo3.2.15/bin]$ ./mongod --config mongo.conf
    ./mongod: error while loading shared libraries: libnetsnmpmibs.so.31: cannot open shared object file: No such file or directory
    [root@alex /alex/data/mongo/mongo3.2.15/bin]$ ./mongod --config mongo.conf  
    ./mongod: error while loading shared libraries: libnetsnmpmibs.so.31: cannot open shared object file: No such file or directory
    [root@alex /alex/data/mongo/mongo3.2.15/bin]$ ls
    bsondump  mongo  mongo.conf  mongod  mongodecrypt  mongodump  mongoexport  mongofiles  mongoimport  mongooplog  mongoperf  mongorestore  mongos  mongosniff  mongostat  mongotop
    [root@alex /alex/data/mongo/mongo3.2.15/bin]$ chmod 777 mongod
    [root@alex /alex/data/mongo/mongo3.2.15/bin]$ ./mongod --config mongo.conf  
    ./mongod: error while loading shared libraries: libnetsnmpmibs.so.31: cannot open shared object file: No such file or directory

然后各种百度，但是内心最深处就是感觉哪个地方没弄好，开始百度“centos7 安装mongo入门，看官方文档”，都没提起

“libnetsnmpmibs.so.31”不小心翻到2月3号给人家留言的博客，定位到这个时间点，本想查看自己的csdn，发现并没做记录![哭][cry.gif]无奈之下去旧的ecs上蹭人品，用history看一下操作记录指令，惊奇的发现前1000行竟然是从mongo开始的。感谢上帝的怜悯

37  cd /space/data/mongo3.2.15/bin/
       38  ls
       39  ./mongod --config mongo.conf 
       40  sudo service mongod start
       41  cd ../
       42  ls
       43  cd ../
       44  ls
       45  cd mongo3.2.15/
       46  ls
       47  cd bin/
       48  ls
       49  ./mongod
       50  ls
       51  ./mongo
       52  ./mongod
       53  yum whatprovides libstdc++.so.6
       54  yum whatprovides libstdc++.so.31
       55  yum whatprovides  libnetsnmpmibs.so.31
       56  yum -y install net-snmp-agent-libs-5.7.2-28.el7_4.1.i686
       57  ./mongod --config mongo.conf 
       58  ./mongod --dbpath=/space/data/mongo3.2.15/data/db --logpath=/space/data/mongo3.2.15/data/logs/mongodb.log --logappend --fork
       59  yum whatprovides  libnetsnmpmibs.so.31
       60  mongod --dbpath=/space/data/mongo3.2.15/data/db --logpath=/space/data/mongo3.2.15/data/logs/mongodb.log --logappend --fork
       61  sudo ln -s /lib/libcrypto.so.0.9.8 /lib/libnetsnmpmibs.so.31
       62  sudo ln -s /lib/libcrypto.so.0.9.8 /lib/libnetsnmpmibs.so.31 -y
       63  ln --help
       64  ls
       65  ./mongod
       66  cat mongod
       67  ./mongod
       68  ls
       69  sudo -i
       70  cd /space/data/mongo3.2.15/bin/
       71  ls
       72  ./mongod
       73  sudo ln -s ~/Downloads/mongodb-correct-version/bin/mongod /usr/local/sbin/bin/mongod
       74  sudo ln -s ~/Downloads/mongodb-correct-version/bin/mongod /space/data/mongo3.2.15/bin/mongod
       75  sudo ln -s ~/Downloads/mongodb-correct-version/bin/mongod /space/data/mongo3.2.15/bin/mongod  --version
       76  ./mongod --dbpath=/space/data/mongo3.2.15/data/db --logpath=/space/data/mongo3.2.15/data/logs/mongodb.log --logappend --fork
       77  cd /etc/
       78  ls
       79  cd init.d/
       80  ls
       81  mongod --dbpath ~/data/db/
       82  cd /space/data/mongo3.2.15/bin/
       83  mongod --dbpath ~/data/db/
       84   sudo cp /lib/x86_64-linux-gnu/libssl.so.1.0.0 /usr/lib/libssl.so.31
       85  sudo apt-get update
       86   sudo apt-get install snmp
       87  yum install -y snmp
       88  yum -y install snmp
       89  cd /space/data/mongo3.2.15/bin/
       90  ls
       91  ll -lhtr /usr/lib64/libnetsnmp.so.31 
       92  mv /usr/lib64//usr/lib64/libnetsnmp.so.31  /tmp/
       93  mv /usr/lib64/libnetsnmp.so.31  /tmp/
       94  ps -ef | grep mongo
       95  kill 32317
       96  ./mongod --dbpath=/space/data/mongo3.2.15/data/db --logpath=/space/data/mongo3.2.15/data/logs/mongodb.log --logappend --fork –smallfiles –nojournal
       97  mv /tmp/libnetsnmp.so.31  /usr/lib64/
       98  ./mongod --dbpath=/space/data/mongo3.2.15/data/db --logpath=/space/data/mongo3.2.15/data/logs/mongodb.log --logappend --fork –smallfiles –nojournal
       99  ./mongod --dbpath=/space/data/mongo3.2.15/data/db --logpath=/space/data/mongo3.2.15/data/logs/mongodb.log  –smallfiles –nojournal &
      100  ./mongod -dbpath /space/data/mongo3.2.15/data/db -logpath /space/data/mongo3.2.15/data/logs/mongodb.log  –smallfiles –nojournal &
      101  ./mongod -dbpath /space/data/mongo3.2.15/data/db -logpath /space/data/mongo3.2.15/data/logs/mongodb.log  –smallfiles –nojournal
      102  ./mongod -dbpath /space/data/mongo3.2.15/data/db -logpath /space/data/mongo3.2.15/data/logs/mongodb.log
      103  ./mongo
      104  ./mongo --port 40000
      105  service mongod start
      106  sudo -i
      107  sudo -i
      108  cd /tmp/
      109  ls

立刻警醒到：这台借别人新买ECS的“ net-snmp”没装：

此处参考博客：[https://blog.csdn.net/qq\_17202587/article/details/78538065][https_blog.csdn.net_qq_17202587_article_details_78538065]

在启动 mongod的时候遇到error while loading shared libraries: libnetsnmpagent.so.20: cannot open shared object file: No such file or directory

该error 是因为未装net-snmp

直接连接外网的Linux服务器可直接使用：yum install net-snmp

[root@alex /alex/data/mongo/mongo3.2.15/bin]$ yum install net-snmp 
    base                                                                                                                                                                                                                                                   | 3.6 kB  00:00:00     
    epel                                                                                                                                                                                                                                                   | 4.7 kB  00:00:00     
    extras                                                                                                                                                                                                                                                 | 3.4 kB  00:00:00     
    updates                                                                                                                                                                                                                                                | 3.4 kB  00:00:00     
    Loading mirror speeds from cached hostfile
    Resolving Dependencies
      Installing : 1:net-snmp-libs-5.7.2-28.el7_4.1.x86_64                                                                                                                                                                                                                    1/4 
      Installing : 1:net-snmp-agent-libs-5.7.2-28.el7_4.1.x86_64                                                                                                                                                                                                              2/4 
      Installing : perl-Data-Dumper-2.145-3.el7.x86_64                                                                                                                                                                                                                        3/4 
      Installing : 1:net-snmp-5.7.2-28.el7_4.1.x86_64                                                                                                                                                                                                                         4/4 
      Verifying  : perl-Data-Dumper-2.145-3.el7.x86_64                                                                                                                                                                                                                        1/4 
      Verifying  : 1:net-snmp-5.7.2-28.el7_4.1.x86_64                                                                                                                                                                                                                         2/4 
      Verifying  : 1:net-snmp-agent-libs-5.7.2-28.el7_4.1.x86_64                                                                                                                                                                                                              3/4 
      Verifying  : 1:net-snmp-libs-5.7.2-28.el7_4.1.x86_64                                                                                                                                                                                                                    4/4 
    
    
    Installed:
      net-snmp.x86_64 1:5.7.2-28.el7_4.1                                                                                                                                                                                                                                          
    
    
    Dependency Installed:
      net-snmp-agent-libs.x86_64 1:5.7.2-28.el7_4.1                                                 net-snmp-libs.x86_64 1:5.7.2-28.el7_4.1                                                 perl-Data-Dumper.x86_64 0:2.145-3.el7                                                
    Complete!
    [root@alex /alex/data/mongo/mongo3.2.15/bin]$ ./mongo
    MongoDB shell version: 3.2.15
    connecting to: test
    Server has startup warnings:
    2018-04-24T23:36:09.715+0800 I CONTROL  [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
    2018-04-24T23:36:09.715+0800 I CONTROL  [initandlisten] 
    2018-04-24T23:36:09.715+0800 I CONTROL  [initandlisten] 
    2018-04-24T23:36:09.715+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
    2018-04-24T23:36:09.715+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
    2018-04-24T23:36:09.715+0800 I CONTROL  [initandlisten] 
    2018-04-24T23:36:09.715+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
    2018-04-24T23:36:09.715+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
    2018-04-24T23:36:09.715+0800 I CONTROL  [initandlisten] 
    2018-04-24T23:36:09.715+0800 I CONTROL  [initandlisten] ** WARNING: soft rlimits too low. rlimits set to 7283 processes, 65535 files. Number of processes should be at least 32767.5 : 0.5 times number of files.
    2018-04-24T23:36:09.715+0800 I CONTROL  [initandlisten] 
    MongoDB Enterprise > show dbs
    local  0.000GB
    MongoDB Enterprise > use hellotables
    switched to db hellotables
    MongoDB Enterprise > db.hellotales.insert({"name":"菜鸟教程"})
    WriteResult({ "nInserted" : 1 })
    MongoDB Enterprise > show tables

完成，，这次再晚也要记录，可以洗漱睡觉去了~

[cry.gif]: https://static-blog.csdn.net/xheditor/xheditor_emot/default/cry.gif
[https_blog.csdn.net_qq_17202587_article_details_78538065]: https://blog.csdn.net/qq_17202587/article/details/78538065