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Oracle OCI

Created2026-07-22|Updated2026-08-04|ManufacturerOracle
|Word Count:6|Reading Time:1mins|Post Views:
Author: Sakura Yumeno
Link: https://meno.lostyu.qzz.io/posts/d5359e78.html
Copyright Notice: All articles on this blog are licensed under CC BY-NC-SA 4.0 unless otherwise stated.
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Restrict User Logins on Ubuntu
Restrict User Logins on Ubuntu 日志文件 /var/run/utmp: 记录当前正在登录系统的用户信息，默认由 who 和 w 记录当前登录用户的信息，uptime 记录系统启动时间； /var/log/wtmp: 记录当前正在登录和历史登录系统的用户信息，默认由 last 命令查看； /var/log/btmp: 记录失败的登录尝试信息，默认由 lastb 命令查看。 登录历史记录 # 查看最新前30条sudo lastb -n 30# 统计登录次数sudo lastb | awk '{print $3}'| sort | uniq -c SSH 限制 IP 登录脚本 # 编写脚本$ sudo bash -c "cat >/home/ubuntu/ssh_deny.sh" <<EOF#!/bin/bash# set -xlist=$(sudo lastb |awk '{print $3}'|sort |uniq -c|awk '{if ($1 > 4) print $2}')for ip in ${list}do...
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How to Replace an Exadata X7-2,X8-2 Compute Node Server Motherboard Assembly
How to Replace an Exadata X7-2,X8-2 Compute Node Server Motherboard Assembly Case Fault information. -> show /SP/faultmgmt /SP/faultmgmt Targets: shell 0 (/SYS) 1 (/SYS/MB) Properties: Commands: cd show-> start /SP/faultmgmt/shellAre you sure you want to start /SP/faultmgmt/shell (y/n)? yfaultmgmtsp> fa show fmadm faulty------------------- ------------------------------------ -------------- --------Time UUID ...
Contents
  1. 1. Oracle OCI
    1. 1.1. Instance
    2. 1.2. Reference
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