Mongodb单机版添加oplog

1、修改配置文件

增加以下配置：

replication:
  oplogSizeMB: 128
  replSetName: rs


security:
  authorization: enabled
  keyFile: /etc/mongo-keyfile


生成认证文件的方法 ：

openssl rand -base64 90 -out /etc/mongo-keyfile
chmod 400 /etc/mongo-keyfile
chown mongod /etc/mongo-keyfile

2、重启并初始化

systemctl restart mongod
rs.initiate()

local库下的oplog.rs集合就是oplog日志


local> rs.initiate()
{
  info2: 'no configuration specified. Using a default configuration for the set',
  me: '127.0.0.1:27017',
  ok: 1
}
rs [direct: other] local> 

rs [direct: primary] local> 

rs [direct: primary] local> show dbs;
admin   140.00 KiB
clc      40.00 KiB
config  176.00 KiB
local   308.00 KiB
rs [direct: primary] local> use local
already on db local
rs [direct: primary] local> show collections
oplog.rs
replset.election
replset.initialSyncId
replset.minvalid
replset.oplogTruncateAfterPoint
startup_log
system.replset
system.rollback.id
system.tenantMigration.oplogView  [view]
system.views
rs [direct: primary] local> 

原文链接：Mongodb单机版添加oplog，转载请注明来源！