telnet으로 SMTP 테스트
telnet mail.esvali.com 25 HELO 127.0.0.1。。。MAIL FROM:hasu0707@daum.net。。。RCPT TO:hasu0707@naver.com。。。DATAsubject: helloTEST MAIL.。。。quit
Orange Pi Zero2
■CPUAllwinner H616 64-bit high-performance Quad-core Cortex-A53 processor ■GPUMali G31 MP2Supports OpenGL ES 1.0/2.0/3.2、OpenCL 2.0 ■Video decoding• H.265 Main10@L5.1 decoder up to 4K@60fps or 6K@30fps• VP9 Profile 2 decoder up to 4K@60fps• AVS2 JiZhun 10bit decoder up to 4K@60fps• H.264 BP/MP/HP@L4.2 decoder up to 4K@30fps ■Video encoding• H.264 BP/MP/HP encoder up to 4K@25fps or 1080p@60fps• JPEG
Orange Pi Zero LTS
■CPUH2 Quad-core Cortex-A7 H.265/HEVC 1080P. ■GPU·Mali400MP2 GPU @600MHz·Supports OpenGL ES 2.0 ■Memory (SDRAM)256MB/512MB DDR3 SDRAM(Share with GPU)(256MB version is Standard version) ■Onboard StorageTF card (Max. 32GB)/ 2MB Spi Flash ■Onboard Network10/100M Ethernet RJ45 POE is default off. ■Onboard WIFIXR819, IEEE 802.11 b/g/n ■Audio InputMIC(via 13 pins external board ) ■Video OutputsAV OUT(via 13 pins external
lcdproc 설치
소스코드 다운로드: http://www.lcdproc.org/ ./configure –prefix=/usr –enable-drivers=allmakemake install cp -fv LCDd.conf /etc/sed -i “s/DriverPath=server\/drivers\//DriverPath=\/usr\/lib\/lcdproc\//g” /etc/LCDd.confchown -R nobody:nobody /usr/lib/lcdproc /etc/LCDd.conf echo “[Unit]” > /usr/lib/systemd/system/LCDd.serviceecho “Description=LCDd display daemon” >> /usr/lib/systemd/system/LCDd.serviceecho “Documentation=man:LCDd(8) http://www.lcdproc.org/” >> /usr/lib/systemd/system/LCDd.serviceecho “After=multi-user.target” >> /usr/lib/systemd/system/LCDd.serviceecho “” >> /usr/lib/systemd/system/LCDd.serviceecho “[Service]” >> /usr/lib/systemd/system/LCDd.serviceecho “Type=simple” >> /usr/lib/systemd/system/LCDd.serviceecho “ExecStart=/usr/sbin/LCDd -s 0 -f -c /etc/LCDd.conf” >> /usr/lib/systemd/system/LCDd.serviceecho “User=root” >> /usr/lib/systemd/system/LCDd.serviceecho “TimeoutStopSec=1s”
VM 빈공간 삭제 및 이미지 최적화
■ Windowshttps://docs.microsoft.com/ko-kr/sysinternals/downloads/sdeletesdelete64 -z C:■ Linux, MacOS# swap 파티션 또는 파일 초기화swapoff -aswapon -srm -rf /swap.imgcat /dev/zero > /zerossyncrm -f /zeros■ 이미지 최적화 (VMware)”%ProgramFiles(x86)%\VMware\VMware Workstation\vmware-vdiskmanager.exe” -k image.vmdk■ 이미지 최적화 (Hyper-V)PowerShell -Command “optimize-vhd -mode full -path ‘c:\hyper-v\vm_images\image.vhdx'”
polkit error
“unable to register authentication agent: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.PolicyKit1 was not provided by any .service files” 오류 발생 시… 퍼미션 점검cd /chown root:root .chmod 755 . 실행 후 ls -al / 하여 .과 ..의 퍼미션 확인
[MySQL] Export schema without data
mysqldump –single-transaction –no-data -u root -p’passwd88′ -d MODOOS > gate1z_schema.sql
[MySQL] Export schema without data 더 읽기"
MariaDB 10.4 이상 Replication 방법
[Replication] ==> MariaDB 10.4 이상버전용 (1호기)1. my.cnf 수정vim /etc/my.cnf.d/server.cnf(수정내역)server_id=1log-basename=master1log_bin 2. 서비스 재기동systemctl restart mysql 3. repl 사용자추가 및 권한부여use mysqlcreate user ‘repl’@’%’ identified by ‘gateone12!@’;grant replication slave on *.* to repl;(확인)show variables like ‘server_id’; 4. Replication 적용change master to master_host=’10.10.10.61′, master_user=’repl’, master_password=’gateone12!@’, master_port=3306, master_log_file=’master1-bin.xxxxx’, master_log_pos=xxxx, master_connect_retry=10;==>log_file 및 log_pos 는 slave 서버에서 “show master status;” 로
MariaDB 10.4 이상 Replication 방법 더 읽기"