<?xml version="1.0" encoding="UTF-8" ?><feed xmlns="http://www.w3.org/2005/Atom">
	<title>ischo.net</title>
	<subtitle>System Engineer&#039;s IT Tech Note</subtitle>	<link rel="alternate" type="text/html" hreflang="ko" href="https://ischo.net/"/>
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	<updated>2026-04-18T21:15:58+00:00</updated>
	<id>https://ischo.net/atom</id>
	<generator>Rhymix</generator>
		<entry>
		<title>시간서버 변경방법</title>
		<link rel="alternate" type="text/html" href="https://ischo.net/bd_win/23133"/>
		<link rel="replies" type="text/html" href="https://ischo.net/bd_win/23133#comment"/>		<id>https://ischo.net/bd_win/23133</id>
		<published>2024-06-12T23:54:56+00:00</published>
		<updated>2024-06-12T23:54:56+00:00</updated>
		<author>
			<name>ischo</name>
		</author>
		<summary type="text"></summary>
							</entry><entry>
		<title>Rocky 9+nginx1.20+php8+MariaDB 10.5 환경에서 wordpress 설치하기</title>
		<link rel="alternate" type="text/html" href="https://ischo.net/bd_linux/23083"/>
		<link rel="replies" type="text/html" href="https://ischo.net/bd_linux/23083#comment"/>		<id>https://ischo.net/bd_linux/23083</id>
		<published>2024-01-10T00:14:00+00:00</published>
		<updated>2024-01-10T00:17:51+00:00</updated>
		<author>
			<name>ischo</name>
		</author>
		<summary type="text">* 설치환경 - OS : Rockay Linux 9.1 - Webserver : nginx 1.20 - PHP : php 8 - DBMS : MariaDB 10.5 - nginx root directory : /data/www - nginx to php-fpm 통신방식 : TCP 1. php, nginx 설치 # yum install php php-common php-xml php-pdo php-opcache php-mbstring php-cli php-fpm php-gd php-mysqlnd php-common-8.0.30-1.el9_2.x86_64 php-xml-8.0.30-1.el9_2.x86_64 php-pdo-8.0.30-1.el9_2.x86_64 php-opcache-8.0.30-...</summary>
							</entry><entry>
		<title>파일시스템 양방향 동기화하기 - rsync, lsyncd</title>
		<link rel="alternate" type="text/html" href="https://ischo.net/bd_linux/23071"/>
		<link rel="replies" type="text/html" href="https://ischo.net/bd_linux/23071#comment"/>		<id>https://ischo.net/bd_linux/23071</id>
		<published>2024-01-03T01:24:50+00:00</published>
		<updated>2024-01-03T01:42:36+00:00</updated>
		<author>
			<name>ischo</name>
		</author>
		<summary type="text">1. 시나리오 - 다음 2개의 서버의 디렉토리내 파일들을 양방향으로 동기화 Server1 : /data/files (소유권 계정 dsnw) Server2 : /data/files (소유권 계정 dsnw) - 운영환경 OS : Rocky Linux 9.1 ssh port : TCP 2142 2. rsync를 이용하여 동기화하기 2-1. ssh key 생성 - Server1 측 key생성 [server1]# ssh-keygen Generating public/private rsa key pair. Enter file in which to save the key (/root/.ssh/id_rsa): Created ...</summary>
							</entry><entry>
		<title>LVM 타입 swap 영역 용량 축소하기</title>
		<link rel="alternate" type="text/html" href="https://ischo.net/bd_linux/23060"/>
		<link rel="replies" type="text/html" href="https://ischo.net/bd_linux/23060#comment"/>		<id>https://ischo.net/bd_linux/23060</id>
		<published>2023-11-27T23:27:26+00:00</published>
		<updated>2023-11-28T00:05:39+00:00</updated>
		<author>
			<name>ischo</name>
		</author>
		<summary type="text">케이스 : 64GB로 설정된 스왑영역을 32GB로 축소하고자 할때 1. 현재 스왑을 제거 # swapoff -v /dev/mapper/rhel-swap 2. 용량 줄이기 # lvreduce -L 32g /dev/mapper/rhel-swap 3. 스왑영역으로 만들기 # mkswap /dev/mapper/rhel-swap 4. 스왑영역 활성화 하기 # swapon -va 5. 결과 확인 # cat /proc/swaps # free -h</summary>
							</entry><entry>
		<title>named 에서 DNS root 서버 리스트 갱신하기</title>
		<link rel="alternate" type="text/html" href="https://ischo.net/bd_linux/22996"/>
		<link rel="replies" type="text/html" href="https://ischo.net/bd_linux/22996#comment"/>		<id>https://ischo.net/bd_linux/22996</id>
		<published>2023-06-13T03:04:50+00:00</published>
		<updated>2023-06-13T05:48:27+00:00</updated>
		<author>
			<name>ischo</name>
		</author>
		<summary type="text">오래된 root 서버 리스트파일을 갖고 있다면 root 네임서버 리스트를 갱신해야 한다. 다음은 오래된 root 네임서버 파일의 예이다. ############################################################################# ; &lt;&lt;&gt;&gt; DiG 9.9.4-RedHat-9.9.4-38.el7_3.2 &lt;&lt;&gt;&gt; +bufsize=1200 +norec @a.root-servers.net ; (2 servers found) ;; global options: +cmd ;; Got answer: ;; -&gt;&gt;HEADER&lt;&lt;- opcode: QUERY, status: NOERROR, id: 17...</summary>
							</entry><entry>
		<title>vi 에디터에서 복사,붙여넣기 하면 # 마크가 자동으로 앞에 붙을때</title>
		<link rel="alternate" type="text/html" href="https://ischo.net/bd_linux/22972"/>
		<link rel="replies" type="text/html" href="https://ischo.net/bd_linux/22972#comment"/>		<id>https://ischo.net/bd_linux/22972</id>
		<published>2023-04-19T04:25:30+00:00</published>
		<updated>2023-04-19T04:27:03+00:00</updated>
		<author>
			<name>ischo</name>
		</author>
		<summary type="text">vi 에디터에서 복사,붙여넣기 하면 # 마크가 자동으로 앞에 붙을때 이유 : 스크립트를 짤때 # 마크로 시작할 경우 자동으로 다음줄에도 붙이는 기능이 동작하기 때문. 해결법 : 텍스트를 복사할때는 명령어 모드에서 다음 명령어 실행후 붙여넣기. : set paste</summary>
							</entry><entry>
		<title>구버전 Linux에서 Rocky Linux 9.1 버전으로 ssh 접속시 &quot;no hostkey alg&quot; 표시후 접속불가</title>
		<link rel="alternate" type="text/html" href="https://ischo.net/bd_linux/22970"/>
		<link rel="replies" type="text/html" href="https://ischo.net/bd_linux/22970#comment"/>		<id>https://ischo.net/bd_linux/22970</id>
		<published>2023-04-19T02:38:33+00:00</published>
		<updated>2023-04-19T04:07:55+00:00</updated>
		<author>
			<name>ischo</name>
		</author>
		<summary type="text">원인 : Rocky Linux 9.1 에서는 더이상 예전의 복호화 정책을 사용하지 않기 때문. 해결법 : 예전 방식의 복호화 정책을 사용가능하도록 조정. Rocky Linux 9.1 에서 다음 명령어 실행. # update-crypto-policies --set LEGACY</summary>
							</entry><entry>
		<title>RHEL/Rocky Linux 8.7 버전에서 MySQL 5.7 버전 설치하기</title>
		<link rel="alternate" type="text/html" href="https://ischo.net/bd_mysql/22948"/>
		<link rel="replies" type="text/html" href="https://ischo.net/bd_mysql/22948#comment"/>		<id>https://ischo.net/bd_mysql/22948</id>
		<published>2023-03-20T00:27:31+00:00</published>
		<updated>2023-03-20T00:32:17+00:00</updated>
		<author>
			<name>ischo</name>
		</author>
		<summary type="text">RHEL/Rocky Linux 8.7 버전에서 MySQL 5.7 버전 설치하기 1. 전체 패키지 업데이트 # dnf update 2. 기존 MySQL 8.0용 Repository 삭제 # dnf info mysql-community-server # dnf remove mysql-community-server # mv /etc/yum.repo.d/mysql-community.repo /etc/yum.repo.d/mysql-community.repo.removed # dnf clean all 3. MySQL 5.7용 yum repository 추가 # cd /etc/yum.repo.d # vi mysql5.7.repo [mysql57-community] name=M...</summary>
							</entry><entry>
		<title>MariaDB federated 활성화</title>
		<link rel="alternate" type="text/html" href="https://ischo.net/bd_mysql/22940"/>
		<link rel="replies" type="text/html" href="https://ischo.net/bd_mysql/22940#comment"/>		<id>https://ischo.net/bd_mysql/22940</id>
		<published>2023-02-23T04:16:26+00:00</published>
		<updated>2023-02-27T00:55:59+00:00</updated>
		<author>
			<name>ischo</name>
		</author>
		<summary type="text">&gt; use mysql; &gt; show engines; &gt; install plugin ferderated soname &quot;ha_federated.so&quot;; &gt; show engines; &gt; quit # vi /etc/my.cnf.d/server.cnf [mysqld] ferderated 추가 # service mariadb restart</summary>
							</entry><entry>
		<title>MariaDB root 패스워드 초기화</title>
		<link rel="alternate" type="text/html" href="https://ischo.net/bd_mysql/22939"/>
		<link rel="replies" type="text/html" href="https://ischo.net/bd_mysql/22939#comment"/>		<id>https://ischo.net/bd_mysql/22939</id>
		<published>2023-02-23T04:14:04+00:00</published>
		<updated>2023-02-27T00:55:22+00:00</updated>
		<author>
			<name>ischo</name>
		</author>
		<summary type="text">1. MariaDB 종료 # service mariadb stop 또는 # kill &lt;PID&gt; 2. MariaDB root 패스워드 없이 기동 # mysqld_safe --skip-grant-tables --skip-networking &amp; 3. 패스워드 초기화 # mysql -u root mysql MariaDB [(mysql)]&gt; flush privileges; MariaDB [(mysql)]&gt; alter user &#039;root&#039;@&#039;localhost&#039; identified by &#039;&lt;newpassword&gt;&#039;; MariaDB [(mysql)]&gt; quit; 4. MariaDB 재기동 # kill &lt;PID&gt; # service mariadb start</summary>
							</entry><entry>
		<title>MySQL 5.7 에서 MariaDB 10.5 로 마이그레이션하기</title>
		<link rel="alternate" type="text/html" href="https://ischo.net/bd_mysql/22938"/>
		<link rel="replies" type="text/html" href="https://ischo.net/bd_mysql/22938#comment"/>		<id>https://ischo.net/bd_mysql/22938</id>
		<published>2023-02-23T04:10:20+00:00</published>
		<updated>2023-02-27T00:53:56+00:00</updated>
		<author>
			<name>ischo</name>
		</author>
		<summary type="text">1. 데이터 이관 기존 서버의 데이터 디렉토리 백업. 1) DB정지 # service mysqld stop 2) 데이터디렉토리 백업 # cd /var/lib/mysql # tar zcf mysql.tar.gz . 3) 신규서버로 백업파일 이동 # sftp &lt;username&gt;@&lt;remote server&gt; sftp&gt; put mysql.tar.gz 2. 신규서버에서 MariaDB 설치 1) MariaDB 다운로드 https://mariadb.org/download/?t=mariadb&amp;p=mariadb&amp;r=10.11.2&amp;os=windows&amp;cpu=x86_64&amp;pkg=msi&amp;m=blendbyte 2) 다운로드한 파...</summary>
							</entry><entry>
		<title>MySQL 감사 로그 설정</title>
		<link rel="alternate" type="text/html" href="https://ischo.net/bd_mysql/22732"/>
		<link rel="replies" type="text/html" href="https://ischo.net/bd_mysql/22732#comment"/>		<id>https://ischo.net/bd_mysql/22732</id>
		<published>2022-09-14T00:28:02+00:00</published>
		<updated>2022-09-14T00:33:15+00:00</updated>
		<author>
			<name>ischo</name>
		</author>
		<summary type="text">Maria DB 안에 있는 server_audit.so 감사로깅 플러그인을 이용하여 MySQL 감사로그 설정하기. 1. Plugin 파일 복사하기 # tar zxf mariadb-5.5.64-linux-systemd-x86_64 # cd mariadb-5.5.64-linux-systemd-x86_64/lib/plugin # cp server_audit.so /usr/lib64/mysql/plugin 2. MySQL 에서 플로그인 설치 # mysql -uroot -p mysql mysql&gt; show plugins; mysql&gt; show global variables like &quot;server_audit%&quot;; mysql&gt; install plugin...</summary>
							</entry><entry>
		<title>파일시스템 사용량 추이를 http 전송으로 DB에 누적하기</title>
		<link rel="alternate" type="text/html" href="https://ischo.net/bd_linux/22677"/>
		<link rel="replies" type="text/html" href="https://ischo.net/bd_linux/22677#comment"/>		<id>https://ischo.net/bd_linux/22677</id>
		<published>2022-08-29T01:58:25+00:00</published>
		<updated>2022-09-01T02:46:30+00:00</updated>
		<author>
			<name>ischo</name>
		</author>
		<summary type="text">파일시스템 사용량 추이를 http 전송으로 DB에 누적하기 시스템 관리를 하다보면 각 서버들의 파일시스템 추이를 관리해야 할 필요가 있다. 파일시스템은 갈수록 크기가 커지며, 하루에 얼마나 쌓이는지 알아야지 향후 저장공간을 증설할때 얼마만큼의 저장공간을 마련해야 할지 예측할 수 있기 때문이다. 또는 정기적인 에방점검을 할때 보고서를 작성하는 경우에도 파일시스템 용량 체크는 상당한 노력이 든다. 수십대가 넘는 시...</summary>
							</entry><entry>
		<title>92년 LA폭동 당시 예비역들의 위엄.jpg</title>
		<link rel="alternate" type="text/html" href="https://ischo.net/bd_freeboard/22631"/>
		<link rel="replies" type="text/html" href="https://ischo.net/bd_freeboard/22631#comment"/>		<id>https://ischo.net/bd_freeboard/22631</id>
		<published>2022-08-01T14:23:35+00:00</published>
		<updated>2022-08-01T14:23:35+00:00</updated>
		<author>
			<name>asdlkasdl123123</name>
		</author>
		<summary type="text"></summary>
							</entry><entry>
		<title>요즘 핫한 어플</title>
		<link rel="alternate" type="text/html" href="https://ischo.net/bd_freeboard/22629"/>
		<link rel="replies" type="text/html" href="https://ischo.net/bd_freeboard/22629#comment"/>		<id>https://ischo.net/bd_freeboard/22629</id>
		<published>2022-08-01T14:23:12+00:00</published>
		<updated>2022-08-01T14:23:12+00:00</updated>
		<author>
			<name>asdlkasdl123123</name>
		</author>
		<summary type="text"></summary>
							</entry></feed> 
