2024년 1월 29일
#R1
config t
interface FastEthernet0/0
ip address 1.1.1.254 255.255.255.0
no shutdown
exit
config t
interface Serial1/0
ip address 2.2.2.1 255.255.255.252
no shutdown
exit
ip route 3.3.3.0 255.255.255.0 2.2.2.2
exit
#R2
config t
interface FastEthernet0/0
ip address 3.3.3.254 255.255.255.0
no shutdown
exit
config t
interface Serial1/0
ip address 2.2.2.2 255.255.255.252
no shutdown
exit
ip route 1.1.1.0 255.255.255.0 2.2.2.1
exit
# R2 라우터에 DHCP 기능 추가
config t
ip dhcp pool R2
network 3.3.3.0 255.255.255.0
dns-server 3.3.3.1
default-router 3.3.3.254
ip dhcp excluded-address 3.3.3.1
ip dhcp excluded-address 3.3.3.2
ip dhcp excluded-address 3.3.3.254
exit
show ip dhcp binding
IP변경
dpkg -l
apt -y install rsync (이미 있어서 생략)
사이트 보고 메인서버, 모니터서버 설정파일 세팅
sudo ln -sf /usr/share/zoneinfo/Asia/Seoul /etc/localtime
rsync -avz --delete --exclude-from=/etc/rsync_exclude.lst /backup/ node01.srv.world::backup
/backup == 시간 + 프로그램
cd /home/master
nano myBackup.sh
#!/bin/sh
set $(date)
fname="backup-$1$2$3.tar.xz"
tar cfj /backup/$fname /home
$1 : 요일
$2 : 월 1월~12월
$3 : 일 1~31
chmod 755 myBackup.sh
ls
/etc/crontab
35 15 * * * root /home/master/myBackup.sh
00 04 * * * root /home/master/myBackup.sh
40 15 * * * root /home/master/rsync.sh
systemctl restart cron
'''
timedatectl set-ntp 0
date 012914002024
systemctl restart cron
시간변경
sudo apt -y install rdate at
rdate -s time.bora.net
'''
rsync.sh
#!/bin/sh
SOURCE_DIR="/backup"
DESTINATION_DIR="3.3.3.2::backup"
rsync -av --delete $SOURCE_DIR/ $DESTINATION_DIR/
0 0 * * * root /home/mater/rsync.sh
데이터베이스백업스크립트
#!/bin/bash
# MySQL 연결 정보
DB_USER="사용자이름"
DB_PASSWORD="패스워드"
DB_NAME="데이터베이스이름"
# 백업 파일 경로 및 파일명 지정
BACKUP_DIR="/경로/백업"
DATE=$(date +"%Y%m%d%H%M%S")
BACKUP_FILE="$BACKUP_DIR/$DB_NAME_backup_$DATE.sql"
# mysqldump를 사용하여 백업 수행
mysqldump -u $DB_USER -p$DB_PASSWORD $DB_NAME > $BACKUP_FILE
# 백업 완료 메시지 출력
echo "MySQL 백업이 완료되었습니다. 백업 파일: $BACKUP_FILE"
[하드디스크 추가]
fdisk /dev/sdb
로그분석기만들기
grep -v -E "^#|^$" /etc/rsyslog.conf /etc/rsyslog.d/*
[3.3.3.1] -----------> [3.3.3.2]
[3.3.3.2] 받을준비
sudo nano /etc/rsyslog.conf
# line 21-22 : uncomment
line 23 : set allowed hosts to connect
module(load="imtcp")
input(type="imtcp" port="514")
$AllowedSender TCP, 127.0.0.1, 10.0.0.0/24, *.srv.world
sudo systemctl restart syslog
netstat -ant | grep 514
tail -f /var/log/auth.log
[3.3.3.1] 보낼준비
sudo nano /etc/rsyslog.d/50-default.conf
# add to the end
action(type="omfwd"
queue.filename="monitor.st.au"
queue.maxdiskspace="1g"
queue.saveonshutdown="on"
queue.type="LinkedList"
action.resumeRetryCount="-1"
Target="monitor.st.au" Port="514" Protocol="tcp")
# queue.filename : queue filename
# queue.maxdiskspace : maxdiskspace for queue
# queue.saveonshutdown=on : save queue data on disk when system shutdown
# queue.type=LinkedList : asynchronous queue which can store 10,000 messages
# action.resumeRetryCount=-1 : continue to retry sending when syslog server does not respond
# Target=*** : specify syslog server Host