내맘대로 테크 피크닉

server 1 master ens33 192.168.10.200 server 2 backup ens33 192.168.10.252 virtual ip : 192.168.10.100 [root@server1 ~]# cat /etc/sysctl.conf net.ipv4.ip_forward = 1 [root@server1 ~]# sysctl -p net.ipv4.ip_forward = 1 [root@server1 ~]# dnf -y install keepalived [root@server1 ~]# mv /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.old [root@server1 ~]# vi /etc/keepalived/kee..

(server target) ens37 192.168.20.1 ------- 192.168.20.2 ens37 (client initiator) server1 server2 ens38 192.168.30.1 ------- 192.168.30.2 ens38 server1 target [root@server1 ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 100G 0 disk ├─sda1 8:1 0 2G 0 part /boot ├─sda2 8:2 0 50G 0 part /var ├─sda3 8:3 0 5G 0 part /home ├─sda4 8:4 0 1K 0 part ├─sda5 8:5 0 4G 0 part [SWAP] └─sda6 8:6 0 3..

vmware workstation-> vm세팅-> network-> segment 만들어서 할당 서버1에서 태깅을 위해 모듈 등록 #lsmod | grep 8021q #modinfo 8021q #modprobe 8021q #lsmode | grep 8021q #vi ifcfg-ens37 [root@server1 network-scripts]# cat ifcfg-ens37 TYPE=Ethernet PROXY_METHOD=none BROWSER_ONLY=no BOOTPROTO=none DEFROUTE=yes IPV4_FAILURE_FATAL=no IPV6INIT=yes IPV6_AUTOCONF=yes IPV6_DEFROUTE=yes IPV6_FAILURE_FATAL=no IPV6_ADDR_GEN_MODE=s..

[root@server1 ~]# nmcli con show NAME UUID TYPE DEVICE ens33 dd621d94-b05d-49ab-9661-922f5abe8b6c ethernet ens33 Wired connection 1 9a1c9126-5892-3170-bade-f28fccc10c65 ethernet ens37 Wired connection 2 7b4d58e7-6cc0-3cd5-8121-2344e7f88ecf ethernet ens38 [root@server1 ~]# ip link 1: lo: mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 link/loopback 00:00:00:00:00:00 brd..

업그레이드 및 필요데몬 설치 dnf update dnf -y install epel-release rsync wget psmisc net-tools lsof chrony [root@dothome-world ~]# localectl set-locale LANG=ko_KR.UTF-8 (옵션) timezone 세팅 timedatectl set-timezone Asia/Seoul ntp 세팅 vi /etc/chrony.conf # pool 2.centos.pool.ntp.org iburst // 주석처리 server time.bora.net iburst :wq! systemctl restart chronyd systemctl enable chronyd systemctl status chronyd chronyc ..

(백업) full backup(풀백업) #tar -g /temp/backup.list -cvzf /temp/full_backup.tar.gz . Incremental backup (증분백업) #touch file{1..10} #tar -g /temp/backup.list -cvzf /temp/full_Incre1.tar.gz . #touch file{100..110} #tar -g /temp/backup.list -cvzf /temp/full_Incre2.tar.gz . (복구) #mkdir /home/user01 #tar -g /temp/backup.list -xvzf /temp/full_backup.tar.gz -C /backup #tar -g /temp/backup.list -xvzf /temp/I..

#hostnamectl set-hostname mail.example.com #vim /etc/hosts 192.168.10.252 mail.example.com # dnf install -y postfix #systemctl enable postfix #systemctl start postfix #systemctl status postfix #vi /etc/postfix/main.cf myhostname = pmail.sangchul.kr mydomain = sangchul.kr myorigin = $mydomain inet_interfaces = all mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain mynetworks =..

#dnf -y install bind* // 또는 ([root@server2 ~]# dnf -y install bind bind-chroot ) [root@server2 ~]# cp /etc/named.conf /etc/named.backup [root@server2 ~]# vi /etc/named.conf //맨 아래쪽 하단에 붙여넣기 zone "abc.com" IN { //정방향 세팅 type master; file "abc.com.db"; allow-update { none; }; allow-query { any; }; }; zone "10.168.192.in-addr.arpa" IN { //역방향 세팅 type master; file "abc.com.rdb"; allow-update { none;..

[root@server1 ~]# vi /etc/yum.repos.d/mariadb.repo [mariadb] name = MariaDB baseurl= http://yum.mariadb.org/10.5/centos8-amd64 module_hotfixes=1 gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB gpgcheck=1 [root@server1 ~]# [root@server1 ~]# dnf -y install MariaDB-server [root@server1 ~]# systemctl status mariadb [root@server1 ~]# systemctl enable mariadb [root@server1 ~]# systemctl start maria..

아래와 같은 에러가 나온다면 CIFS 관련 유틸이 설치되지 않은 것 에러) mount: wrong fs type, bad option, bad superblock on //192.168.1.2/test, missing codepage or helper program, or other error (for several filesystems (e.g. nfs, cifs) you might need a /sbin/mount. helper program) ============================================================ 윈도우 폴더 가져다 리눅스에 share해서 쓰기 윈도우에서 계정생성 cmd 관리자 권한으로 실행 > net user root 1234 /add 폴더 세..