MongoDB服务启动异常 status=14 大数据

MongoDB进程 kill -9之后导致服务起不来了

[root@yaong etc]# systemctl status mongod.service ● mongod.service - MongoDB Database Server ...... Process: 9526 ExecStart=/usr/bin/mongod $OPTIONS (code=exited, status=14) ...... Aug 19 10:26:12 yaong systemd[1]: mongod.service: control process exited, code=exited status=14 ......

从网上找了找相关资料，大致说法是：mongo内存管理很特殊，kill -9 很可能影响存库操作如果不是在写磁盘的时候宕掉，可以通过repair命令进行修复，会丢失最后一次写磁盘的时刻到宕掉时刻期间的数据如果赶上写磁盘的时候进程宕掉，repair也不能恢复数据，很可能会丢失掉全部数据尝试进行修复

[root@yaong etc]# /usr/bin/mongod -f /etc/mongod.conf --repair about to fork child process, waiting until server is ready for connections. forked process: 9575 child process started successfully, parent exiting

再次查看服务状态

[root@yaong etc]# systemctl status mongod.service ● mongod.service - MongoDB Database Server Active: failed (Result: exit-code) since Thu 2021-08-19 10:27:05 CST; 6s ago Process: 9618 ExecStart=/usr/bin/mongod $OPTIONS (code=exited, status=1/FAILURE) ...... Aug 19 10:27:05 yaong systemd[1]: mongod.service: control process exited, code=exited status=1 ......

燃鹅还是存在其他问题，鉴于库里没有存啥数据，统统干掉，重头再来

rm -rf /var/lib/mongo/* rm -rf /var/log/mongodb/* cat /var/run/mongodb/mongod.pid rm -rf /data/db/mongod.lock rm -rf /var/lib/mongo/mongod.lock

再次启动服务，服务就起来了

[root@yaong mongodb]# systemctl restart mongod [root@yaong mongodb]# systemctl status mongod.service ● mongod.service - MongoDB Database Server Active: active (running) since Thu 2021-08-19 10:47:14 CST; 3s ago Docs: https://docs.mongodb.org/manual Process: 10836 ExecStart=/usr/bin/mongod $OPTIONS (code=exited, status=0/SUCCESS) ...... Main PID: 10839 (mongod) CGroup: /system.slice/mongod.service └─10839 /usr/bin/mongod -f /etc/mongod.conf[root@yaong etc]# ps -ef | grep mongo mongod1083910 10:47 ?00:00:22 /usr/bin/mongod -f /etc/mongod.conf root1594916270 12:25 pts/000:00:00 grep --color=auto mongo

至此，提醒大家停止mongo进程一定要谨慎，推荐三种较稳妥的方式：

交互模式下：

use admin
db.shutdownServer()
mongo命令：

mongod --shutdown
系统命令

kill

除了服务启动模式，还可以命令行后台启动

mongod --dbpath /var/lib/mongo --logpath /var/log/mongodb/mongod.log --fork [root@yaong etc]# ps -ef | grep mongo root1022215 10:37 ?00:00:01 mongod --dbpath /var/lib/mongo --logpath /var/log/mongodb/mongod.log --fork root1028116270 10:38 pts/000:00:00 grep --color=auto mongo

【MongoDB服务启动异常 status=14】与之对应的是停止进程的命令