iptables
ubuntu 메모리상태
Overview : 리눅스 메모리 상태 확인
[OS]Ubuntu
Ubuntu PHP7.3 에서 PHP7.4 으로 안전하게 업그레이드 하기
1. repository 최신데이타 받기 2.설치전 업데이트 3.php7.4 설치 4.php7.4 util 설치 5.php 새번전 등록 6.php7.3 비활성화 7.php7.4 활성화 8.apache2 restart 9.버전 확인
ubuntu vsftpd SSL/TLS로 접속 하기
Ubuntu ftp 디렉토리 / 접속계정 세팅 1.디렉토리 생성 2.계정 추가 3.계정 비번 새로 변경 4.계정 생성 확인 5.디렉토리 계정 권한으로 세팅 6.기타 설정 Ubuntu SSL […]
CIFS Utils
samba 설치된 컴에 mount 연결 하기 명령어로 네트워크 컴퓨터 조사
Ubuntu Updates 20
Ubuntu 20.04.1 로 업데이이트 다음 명령어 단계에서 진행 되지 않으면 업데이트 후 진행 합니다.
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do-release-upgrade |
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Checking for a new Ubuntu release Please install all available updates for your release before upgrading. |
Ubuntu 20.04.1
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sudo apt-get update |
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sudo apt-get upgrade -y |
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sudo apt-get dist-upgrade |
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sudo do-release-upgrade |
Y 로 […]
ubuntu 18.04 mysql 8.023 설치
sudo apt update sudo apt install mysql-server sudo mysql_secure_installation
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sudo apt update sudo apt install mysql-server sudo mysql_secure_installation |
sudo mysql_secure_installation
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root@localhost:/etc/apache2# sudo mysql_secure_installation Securing the MySQL server deployment. Connecting to MySQL using a blank password. VALIDATE PASSWORD PLUGIN can be used to test passwords and improve security. It checks the strength of password and allows the users to set only those passwords which are secure enough. Would you like to setup VALIDATE PASSWORD plugin? Press y|Y for Yes, any other key for No: y There are three levels of password validation policy: LOW Length >= 8 MEDIUM Length >= 8, numeric, mixed case, and special characters STRONG Length >= 8, numeric, mixed case, special characters and dictionary file Please enter 0 = LOW, 1 = MEDIUM and 2 = STRONG: 0 Please set the password for root here. New password: Re-enter new password: Estimated strength of the password: 50 Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y By default, a MySQL installation has an anonymous user, allowing anyone to log into MySQL without having to have a user account created for them. This is intended only for testing, and to make the installation go a bit smoother. You should remove them before moving into a production environment. Remove anonymous users? (Press y|Y for Yes, any other key for No) : y Success. Normally, root should only be allowed to connect from 'localhost'. This ensures that someone cannot guess at the root password from the network. Disallow root login remotely? (Press y|Y for Yes, any other key for No) : n ... skipping. By default, MySQL comes with a database named 'test' that anyone can access. This is also intended only for testing, and should be removed before moving into a production environment. Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y - Dropping test database... Success. - Removing privileges on test database... Success. Reloading the privilege tables will ensure that all changes made so far will take effect immediately. Reload privilege tables now? (Press y|Y for Yes, any other key for No) : n ... skipping. All done! |
Check authentication method for MySQL users host 가 % 일경우 #주석처리 #bind-address=127.0.0.0 […]
ubuntu 설치된 버전 확인
간단하게 현재 사용중인 우분투의 버전을 확인 lsb_release -a
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root@localhost:/etc/apache2# lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.04.1 LTS Release: 18.04 Codename: bionic |
cat /etc/*release
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root@localhost:/etc/apache2# cat /etc/*release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=18.04 DISTRIB_CODENAME=bionic DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS" NAME="Ubuntu" VERSION="18.04.1 LTS (Bionic Beaver)" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 18.04.1 LTS" VERSION_ID="18.04" HOME_URL="https://www.ubuntu.com/" SUPPORT_URL="https://help.ubuntu.com/" BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/" PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy" VERSION_CODENAME=bionic UBUNTU_CODENAME=bionic |
설치된 리눅스(우분투)가 32비트인지 64비트인지 확인 uname -m
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root@locahost:/etc/apache2# uname -m x86_64 |
apache internal dummy connection 로그 생성 방지하기
apache 가 정상적으로 응답하지 않는 현상도 발생
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::1 - - [26/Mar/2020:16:10:30 +0900] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g (internal dummy connection)" ::1 - - [26/Mar/2020:16:10:31 +0900] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g (internal dummy connection)" ::1 - - [26/Mar/2020:16:10:32 +0900] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g (internal dummy connection)" ::1 - - [26/Mar/2020:16:10:33 +0900] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g (internal dummy connection)" ::1 - - [26/Mar/2020:16:10:35 +0900] "OPTIONS * HTTP/1.0" 200 126 "-" "Apache/2.4.29 (Ubuntu) OpenSSL/1.1.0g (internal dummy connection)" |
해결책 : /etc/apache2/apache2.conf
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SetEnvIf Remote_Addr "::1" loopback SetEnvIf Remote_Addr "127\.0\.0\.1" loopback CustomLog ${APACHE_LOG_DIR}/access_log combined env=!loopback |
참조 : https://cwiki.apache.org/confluence/display/HTTPD/InternalDummyConnection https://allthatlinux.com/dokuwiki/doku.php?id=access_log%EC%97%90_options_http_1.0_%EA%B0%80_%EA%B8%B0%EB%A1%9D%EB%90%98%EB%8A%94_%EC%9D%B4%EC%9C%A0
ubuntu Hash sum mismatch error
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E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/xenial-updates/main/binary-amd64/by-hash/SHA256/86d06dec5cec67943ee6e7c12ecb473588920e74747b6126d12fbf679ccfb18a Hash Sum mismatch |
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sudo rm -rf /var/lib/apt/lists/* sudo apt-get update |
참조 : https://askubuntu.com/questions/41605/trouble-downloading-packages-list-due-to-a-hash-sum-mismatch-error