25æXNUMXæ¥ããåå ç»é²ãéå§ããŸãã
- ã¢ã¬ã¯ãµã³ããŒã»ãã«ãã³ããXNUMXäœãšãªã£ãã
ã¢ã¬ã¯ãµã³ããŒã¯ãèªåãæãå žåçãªã·ã¹ãã 管çè ã§ãããšèªåã«èšãèãããŸããã ãŽã©ã«ãŽã°ã©ãŒãã«äœãã§ãããçŽ XNUMX 幎éãããŸããŸãª Unix ç³»ã·ã¹ãã ã管çããŠããŸããã ç§ã¯ã€ã³ã¿ãŒããããããã€ããŒãéè¡ãã·ã¹ãã ã€ã³ãã°ã¬ãŒã¿ãŒã§ãªããšãåãããšãã§ããŸããã çŸåšã圌ã¯äžå°äŒæ¥ã§ãªã¢ãŒãå€åããå€åœã®å€§èŠæš¡é¡§å®¢åãã®ã¯ã©ãŠã ã€ã³ãã©ã¹ãã©ã¯ãã£ã«åãçµãã§ããŸãã èªæžãšé³æ¥œãèŽãã®ã倧奜ãã§ãã ã²ãŒã ã«ã€ããŠã¢ã¬ã¯ãµã³ããŒã¯ãã²ãŒã å šäœãæ°ã«å ¥ã£ãŠããããã®ãããªã¿ã¹ã¯ã倧奜ãã§ãããšè¿°ã¹ãŸããã ããäŒæ¥ã®é¢æ¥äžã«ãHackerrank ã«äŒŒããããªããšãããã®ã§ãããããã¯èå³æ·±ããã®ã§ããã - XNUMXäœ - ããŒãã³ã»ã¹ã¹ããã
ã¢ã¹ã¯ã¯çºã®å°èª¬ã 圌ã¯37æ³ã§ãã Jet Infosystems 㧠Linux/Unix ãšã³ãžãã¢ãšããŠåããŠããŸãã è·å Žã§ã¯ãLinux/Unix ã·ã¹ãã ãš SAN ã®ç®¡çãšãã©ãã«ã·ã¥ãŒãã£ã³ã°ãè¡ãå¿ èŠããããŸãã Linux ã·ã¹ãã ãããã°ã©ãã³ã°ããªããŒã¹ ãšã³ãžãã¢ãªã³ã°ãæ å ±ã»ãã¥ãªãã£ãArduino ãªã©ãèå³ã¯ããŸããŸã§ãã ã²ãŒã ã«ã€ã㊠Roman ã¯ã²ãŒã å šäœãæ°ã«å ¥ã£ããšè¿°ã¹ãŸããã ãç§ã¯å°ãé ã䌞ã°ããŠãæ¯æ¥ã®ä»äºã«è¿œãããç°è²ã®æ¥åžžããé¢ããŠäŒæ©ãåããŸããã ð ãã£ãšã¿ã¹ã¯ãå¢ããããã®ã§ãããããã§ãªããšããããå³ããåã«ã²ãŒã ãçµãã£ãŠããŸããŸããã - 3çªç® - ã¢ã¬ãã¯ã¹XNUMXdã
ã¢ã¬ãã¯ã¹ã¯ã¢ã¹ã¯ã¯ã«äœãã§ããããœãããŠã§ã¢éçºã®ä»äºãããŠããŸãã ãã³ã³ãã¹ãã«åå ããŠãããŠããããšããGoogle ã®ã¹ãã«ããã¹ãããã®ã¯é¢çœãã£ãã§ããã
ãã¹ã10éžæã®ã©ã³ãã³ã°ã«ãïŒ
- ãšãã²ããŒã»ãµã«ããšã
- ãã«ã±ã«ã»ã¢ã¯ããã§ãã¹ããŒ
- ã³ã³ã¹ã¿ã³ãã³ã»ã³ããœã
- ããã«ã»ã»ã«ã®ãšã
- ãŠã©ãžãŒãã«ã»ãããšã
- ã€ã¯ã³ã»ãããã
- ãããã»ã¯ã¬ãã
ãã¹ãŠã®åé¡ã解決ããã«ã¯å€ãã®éžæè¢ãããããšãç§ãã¡ã¯ç解ããŠããŸããèãããã解決çã®ããã€ãã以äžã«èª¬æããŸãã
1. 第äžæ®µé
ã¿ã¹ã¯ã¯ãŠã©ãŒã ã©ã³ã ãµãŒãã¹ãä¿®æ£ãããšããéåžžã«åçŽãªäœæ¥ã ã£ãã®ã§ããããªãã¯æ¬åœã«ç®¡çè ã§ãã?ããšåä»ããŸããã
1.1. èå³æ·±ãäºå®:
ã²ãŒã ã®æåã® 15 å㧠XNUMX 人ã®ãã¬ã€ã€ãŒãæåã®éµãèŠã€ããæåã® XNUMX æé㧠XNUMX 人ã®ãªãŒããŒãã¿ã¹ã¯ãå®äºããŸããã
1.2. ãšã¯ãµãµã€ãº
ããªãã¯ãé·ãéãæèœãªæ å ±æè¡ã®å°é家ãããªãäŒç€Ÿã«å°±è·ããŸããã ç©äºãæŽçãå§ããåã«ããªãã£ã¹ã®ä»äºã劚ããŠããæ·±å»ãªåé¡ã解決ããå¿ èŠããããŸãã
æé€å©Šã¯ã¢ããã§ãµãŒããŒãã£ããããã®é»æºã±ãŒãã«ãåŒã£æããã é»åã¯åŸ©æ§ããŸããããéåžžã«éèŠãªãŠã§ããµã€ãã¯ãŸã åäœããŠããŸããã å瀟ã¯æ å ±ã»ãã¥ãªãã£ãããŸãéèŠããŠããªãããããã® Web ãµã€ãã¯éèŠã§ããããã®ã¡ã€ã³ ããŒãžã«ã¯ CEO ã®ã³ã³ãã¥ãŒã¿ã®ç®¡çè ãã¹ã¯ãŒããå¹³æã§èšèŒãããŠããŸãã
å æ¥ãã¹ã¯ãŒããå€æŽãããŸããããå šå¡ãæ°ãããã¹ã¯ãŒããå¿ããŠããŸãããã£ã¬ã¯ã¿ãŒã¯ä»äºãã§ããªããªããŸããã ãã®ãã·ã³ã«ã¯äŒèšæžé¡ã®ããã¯ã¢ããã³ããŒã解èªããã®ã«åœ¹ç«ã€éµãããã«ãã£ããšããåããããŸãã
誰ããåé¡ã®è¿ éãªè§£æ±ºãæåŸ ããŠããŸãã
1.3 解決ç
1. ãŸããä»®æ³ãã·ã³ã«ã¢ã¯ã»ã¹ããã«ã¯ããã®ä»®æ³ãã·ã³ã® root ãã¹ã¯ãŒããå€æŽããå¿ èŠããããŸãã èµ·åãããšãããã Ubuntu 16.04 ãµãŒããŒã§ããããšãããããŸãã
root ãã¹ã¯ãŒãããªã»ããããã«ã¯ããã·ã³ãåèµ·åããããŒãæã« grub ã¡ãã¥ãŒã衚瀺ãããç¬éã«ããeããã¿ã³ã§ Ubuntu é
ç®ãç·šéããŸãã linux ãšããè¡ãç·šéããæåŸã«è¿œå ããŸã init=/bin/bash
ã Ctrl+x ã§ããŒããããšãbash ãåŸãããŸãã rw ã䜿çšããŠã«ãŒããåããŠã³ããããã¹ã¯ãŒããå€æŽããŸãã
$ mount -o remount,rw /dev/mapper/ubuntu--vg-root
$ passwd
åæãåèµ·åãå¿ããªãã§ãã ããã
2. ç¶æ ã¯ãWeb ãµãŒããŒãåäœããŠããªãããšã瀺ããŠããŸããèŠãŠãã ããã
$ curl localhost
Not Found
The requested URL / was not found on this server.
Apache/2.4.18
ã€ãŸããå®éã«ã¯ãApache ã¯å®è¡ãããŠããŸãããã³ãŒã 404 ã§å¿çããŸããæ§æãèŠãŠã¿ãŸãããã
$ vim /etc/apache2/sites-enabled/000-default.conf
ããã«ãéµããããŸã - StevenPaulSteveJobsã
ãã¹ã確èªãã /usr/share/WordPress
- ãããªããšã¯ãããŸãããããããŸãã /usr/share/wordpress
ã èšå®ãç·šéããApache ãåèµ·åããŸãã
$ systemctl restart apache2
3. åè©Šè¡ãããšã次ã®ãšã©ãŒã衚瀺ãããŸãã
Warning: mysqli_real_connect(): (HY000/2002): Connection refused in /usr/share/wordpress/wp-includes/wp-db.php on line 1488
ããŒã¿ããŒã¹ãåããŠããªãã®ã§ããããïŒ
$ systemctl status mysql
Active: active (running)
ã©ãããã®ïŒ ãããç解ããå¿
èŠããããŸãã ãããè¡ãã«ã¯ãããã§èª¬æãããŠããããã«ãMySQL ãžã®ã¢ã¯ã»ã¹ãååŸããå¿
èŠããããŸãã skip-grant-tables
в /etc/mysql/mysql.conf.d/mysqld.cnf
ã ããã«ãéµããããŸã - AugustaAdaKingByronã
ãŠãŒã¶ãŒæš©éã®ä¿®æ£ 'wp'@'localhost'
ã MySQL ãèµ·åãããããã¯ãŒã¯çµç±ã§ã¢ã¯ã»ã¹ã§ããããã«ããèšå®å
ã®ãªãã·ã§ã³ãã³ã¡ã³ãåããŸãã skip-networking
.
4. ãããã®æé ã®åŸãWeb ãµãŒããŒã¯èµ·åããŸããããµã€ãã¯ãŸã åäœããŸããã
Warning: require_once(/usr/share/wordpress/wp-content/themes/twentysixteen/footer.php): failed to open stream: Permission denied in /usr/share/wordpress/wp-includes/template.php on line 562
ãã¡ã€ã«ã«å¯Ÿããæš©å©ãç·šéããŸãã
$ chmod 644 /usr/share/wordpress/wp-content/themes/twentysixteen/footer.php
ããŒãžãæŽæ°ãããµã€ãã«ã¢ã¯ã»ã¹ããŠããŒãèŠã€ããŸã - BjarneStroustrup! XNUMX ã€ã®éµããã¹ãŠèŠã€ããããã£ã¬ã¯ã¿ãŒã¯äœæ¥ã§ããããã«ãªããäŒèšãã¡ã€ã«ã埩å·åãããŸããã 誰ããæºè¶³ããŠããŸããã瀟å ã®ã€ã³ãã©ã¹ãã©ã¯ãã£ãããã¯ã¢ãããã»ãã¥ãªãã£ãã»ããã¢ããããããã«ã¯ãå€ãã®äœæ¥ãåŸ ã£ãŠããŸãã
2. 第äºæ®µé
åæãåéãããšããåé¡ã解決ããå¿ èŠããããŸããã 誰ããåæãæããŠããŸãã誰ããã©ãã§ãã©ã®ãããã®éã§ããã䜿çšããã®ãã ç§ãã¡ã¯ããã¹ãŠã®ãšã³ãžãã¢ã人çã«ãããŠäœããã®åœ¢ã§ééããå¯èœæ§ã®ããã±ãŒã¹ãèãåºããŸããã
2.1. èå³æ·±ãäºå®
ãã¬ã€ã€ãŒã® 10 人ãã²ãŒã éå§ãã XNUMX å以å ã«æ£ããããŒãå ¥åããæåã® XNUMX æé以å ã«ã¿ã¹ã¯ãå®äºãããªãŒããŒãããŸããã
2.2. ãšã¯ãµãµã€ãº
ããªããäŒç€Ÿã«åºå€ãããšããããŒãžã£ãŒãããªãã®ãšããã«ãã£ãŠæ¥ãŠãã¢ããªã«ãã誰ã«æçŽãéãããŠããã®ã調ã¹ãŠã»ãããšé ŒãŸããŸããã ãããã«åºã¥ããŠäžäœ 21 ã®åä¿¡è ã¢ãã¬ã¹ãæ§ç¯ããå¿ èŠããããŸãã åä¿¡è ã®ã¢ãã¬ã¹ã®æåã®æåãããŒã§ãã XNUMX ã€ç®ã¯ãæçŽã®éä¿¡ã«äœ¿çšãããã¡ãŒã« ãµãŒããŒãèªã¿èŸŒãŸããªããšããããšã§ãã 誰ããåé¡ã®è¿ éãªè§£æ±ºãæåŸ ããŠããŸãã
2.3 解決ç
1. fstab ã«ã¹ã¯ãã ããŒãã£ã·ã§ã³ãååšããªãããããµãŒããŒãèµ·åãããããŒãæã«ã·ã¹ãã ããããããŠã³ãããããšããŠã¯ã©ãã·ã¥ããŸãã èµ·åæ¹æ³ã¯ïŒ
ã€ã¡ãŒãžãããŠã³ããŒãããCentOS 7 ãããŠã³ããŒãããLive CD/DVD ããèµ·åã (ãã©ãã«ã·ã¥ãŒãã£ã³ã° -> ã¬ã¹ãã¥ãŒ)ãã·ã¹ãã ãããŠã³ãããç·šéããŸã /etc/fstab
ã æåã®éµã¯ããã«èŠã€ãããŸãã - GottfriedWilhelm11646Leibniz!
ã¹ã¯ãããäœæããŸãã
$ lvcreate -n swap centos -L 256M
$ sync && reboot
2. ãã€ãã®ããã«ããã¹ã¯ãŒãã¯ãããŸãããä»®æ³ãã·ã³ã® root ãã¹ã¯ãŒããå€æŽããå¿ èŠããããŸãã ããã¯æåã®ã¿ã¹ã¯ã§ãã§ã«å®è¡ããŸããã å€æŽããŠãµãŒããŒã«æ£åžžã«ãã°ã€ã³ããŸããããããã«åèµ·åãå§ãŸããŸãã ãµãŒããŒã¯ããã¹ãŠã®ãã°ã泚ææ·±ãèŠãæéãããªãã»ã©ã®é床ã§éè² è·ã«ãªããŸãã äœãèµ·ãã£ãŠããã®ããã©ã®ããã«ç解ããã°ããã§ãããã?
ããã§ã livecd ããèµ·åããã·ã¹ãã ãã°ã泚ææ·±ã調æ»ãã念ã®ããããã®ãããªåšææ§ããããã cron ã調ã¹ãŸãã ããã§åé¡ãš 1912 çªç®ã®éµãAlanXNUMXMathisonTuring ãèŠã€ãããŸããã
å¿
èŠãª /etc/crontab
è¡ãåé€ãŸãã¯ã³ã¡ã³ãã¢ãŠããã echo b > /proc/sysrq-trigger
.
3. ãµãŒããŒãããŒãããããšããããŒãžã£ãŒã®ã¿ã¹ã¯ãã¢ããªã«ã®äœæã¯äœã§ãã?ããå®äºã§ããŸãã ãã®æ
å ±ã¯äžè¬ã«å
¬éãããŸãã ãã®æ
å ±ã¯ãã€ã³ã¿ãŒãããäžã§ãIP ã¢ãã¬ã¹ ã¢ããªã«ãããGEOIP ããŒã¿ããŒã¹ããšãããã¬ãŒãºã䜿çšããŠèŠã€ããããšãã§ããŸãã ãã®åé¡ã解決ããã«ã¯ãç¡æã§å©çšã§ããã¢ãã¬ã¹é
åžããŒã¿ããŒã¹ (geoip) ã䜿çšã§ããŸãã ããŒã¿ããŒã¹ãæšæºãšããŠäœ¿çšããŸãã
Linux ã·ã¹ãã ãŠãŒãã£ãªãã£ã®ã¿ã䜿çšããŠåé¡ã解決ããŠã¿ãŸãããäžè¬ã«ãããã¹ã ãã£ã«ã¿ãªã³ã° ãŠãŒãã£ãªãã£ã䜿çšããããããŸããŸãªããã°ã©ãã³ã°èšèªã®ã¹ã¯ãªããã䜿çšããããããªã©ãéåžžã«å€ãã®æ¹æ³ã§åé¡ã解決ã§ããŸãã
ãŸããã¡ãŒã« ãã°ãããéä¿¡è
ãšåä¿¡è
ã® IPãã®ãã¢ãååŸããŸãã /var/log/maillog
(é»åã¡ãŒã«åä¿¡è
- éä¿¡è
IP ã®ããŒãã«ãäœæããŸããã)ã ããã¯æ¬¡ã®ã³ãã³ãã§å®è¡ã§ããŸãã
$ cat /var/log/maillog | fgrep -e ' connect from' -e 'status=sent' | sed 's/[]<>[]/ /g' | awk '/connect from/ {ip=$11} /status=sent/ {print $10" "ip}' > log1.txt
ã¢ããªã«ã®äœæã®ããŒã¿ããŒã¹ã®äœæãç¶ããåã«ãéä¿¡è ã®äžäœ IP ã¢ãã¬ã¹ãèŠãŠã¿ãŸãããã
$ cat log1.txt | cut -d' ' -f1 | sort | uniq -c | sort -r | head -n 40
5206 [email protected]
4165 [email protected]
3739 [email protected]
3405 [email protected]
3346 [email protected]
ãã®äžã§ããäžããæåã® 3 人ã®å®å ã¯ãæçŽã®æ°ã®ç¹ã§æããã«éç«ã£ãŠããŸãã ãã®äžäœ XNUMX ã€ã®ã¢ãã¬ã¹ã«éä¿¡ããéä¿¡è ã® IP ã¢ãã¬ã¹ã grep ãããšãç¹å®ã®ãããã¯ãŒã¯ãæããã«åªå¢ã§ããããšãããããŸãã
$ cat log1.txt | fgrep '[email protected]' | cut -d' ' -f2 | sort | cut -d'.' -f1 | uniq -c | sort -r | head
831 105
806 41
782 197
664 196
542 154
503 102
266 156
165 45
150 160
108 165
ãããã¯ãŒã¯ 105/8ã41/8ã196/8,197ã8/41 ã®ã»ãšãã©ã¯ãã€ã³ã¿ãŒããã ãªãœãŒã¹ãé åžãã 8 ã€ã®å°åã€ã³ã¿ãŒããã ã¬ãžã¹ãã©ã® XNUMX ã€ã§ãã AFRINIC ã«å²ãåœãŠãããŠããŸãã AFRINIC ã¯ã¢ããªã«å šåã«ã¢ãã¬ã¹ç©ºéãé åžããŸãã ãããŠãXNUMX/XNUMX ã¯å®å šã« AFRINIC ãæããŸãã
https://www.nic.ru/whois/?searchWord=105.0.0.0
https://www.nic.ru/whois/?searchWord=41.0.0.0
ãããã£ãŠãåé¡ã«å¯Ÿããçãã¯å®éã«ã¯ãã°èªäœã®äžã«ãããŸãã
$ cat log1.txt | fgrep -e '105.' -e '41.' -e '196.' -e '197.' -e '154.' -e '102.' | awk '{print $1}' | sort | uniq -c | sort -r | head -n 21
4209 [email protected]
3313 [email protected]
2704 [email protected]
2215 [email protected]
1774 [email protected]
1448 [email protected]
1233 [email protected]
958 [email protected]
862 [email protected]
762 [email protected]
632 [email protected]
539 [email protected]
531 [email protected]
431 [email protected]
380 [email protected]
357 [email protected]
348 [email protected]
312 [email protected]
289 [email protected]
282 [email protected]
274 [email protected]
ãã®æ®µéã§ãæååãLinuxBenedictTorvadstããååŸããŸãã
æ£ããããŒ:ãLinusBenedictTorvaldsãã
çµæã®æååã«ã¯ãæåŸã® 3 æåã®æ£ããããŒã«é¢ããã¿ã€ããã¹ãå«ãŸããŠããŸãã ããã¯ãç§ãã¡ãéžæãããããã¯ãŒã¯ãå®å šã«ã¢ããªã«è«žåœå°çšã§ã¯ãªããšããäºå®ãšããã°å ã® IP ã¢ãã¬ã¹ã«ãã£ãŠé»åã¡ãŒã«ãé ä¿¡ãããæ¹æ³ã«ãããã®ã§ãã
ã¢ããªã«è«žåœã«å²ãåœãŠãããæ倧ã®ãããã¯ãŒã¯ã®ååãªä»æ§ãããã°ãæ£ç¢ºãªçããåŸãããšãã§ããŸãã
$ cat log1.txt | fgrep -e' '105.{30..255}. -e' '41. -e' '196.{64..47}. -e' '196.{248..132}. -e' '197.{160..31}. -e' '154.{127..255}. -e' '102.{70..255}. -e' '156.{155..255}. | awk '{print $1}' | sort | uniq -c | sort -r | head -n 21
3350 [email protected]
2662 [email protected]
2105 [email protected]
1724 [email protected]
1376 [email protected]
1092 [email protected]
849 [email protected]
712 [email protected]
584 [email protected]
463 [email protected]
365 [email protected]
269 [email protected]
225 [email protected]
168 [email protected]
142 [email protected]
111 [email protected]
96 [email protected]
78 [email protected]
56 [email protected]
56 [email protected]
40 [email protected]
ãã®åé¡ã¯å¥ã®æ¹æ³ã§ã解決ã§ããŸãã
MaxMind ãããŠã³ããŒãããŠè§£åãããšã次㮠XNUMX ã€ã®ã³ãã³ããåé¡ã解決ããŸãã
$ cat GeoLite2-Country-Locations-ru.csv | grep "ÐÑÑОка" | cut -d',' -f1 > africaIds.txt
$ grep -Ff africaIds.txt GeoLite2-Country-Blocks-IPv4.csv | cut -d',' -f1 > africaNetworks.txt
$ grepcidr -f africaNetworks.txt log1.txt | cut -d' ' -f1 | sort | uniq -c | sort -r | head -n21
ãããã«ãããç§ãã¡ã¯æçµçã«çµ±èšãèšç®ãããããŒãžã£ãŒã¯äœæ¥ã«å¿ èŠãªããŒã¿ãåãåããŸããã
3.第XNUMX段é
XNUMX çªç®ã®æ®µéã¯æåã®æ®µéãšå€å°äŒŒãŠããŸãããŠã©ãŒã ã©ã³ã ãµãŒãã¹ãä¿®æ£ããå¿ èŠããããŸããããã¹ãŠãæåã®ã¿ã¹ã¯ãããè€éã§ãã
3.1. èå³æ·±ãäºå®
æåã® 15 åé㧠2 人ã®ãã¬ã€ã€ãŒãæåã®éµãèŠã€ããã¹ããŒãžéå§ãã 20 æé XNUMX ååŸã«åè ãã¿ã¹ã¯ãå®äºããŸããã
3.2. ãšã¯ãµãµã€ãº
ããªãã¯ããã¹ãŠã®ç€Ÿå ããã¥ã¡ã³ãã瀟å Wiki ãµãŒããŒã«ä¿åãããŠããäŒç€Ÿã«å€ããããšã«ãªããŸããã æšå¹Žããããšã³ãžãã¢ã¯ãã·ã¹ãã ããã©ãŒã«ã ãã¬ã©ã³ãã§ããããã«ã¯ããã£ã¹ã¯ãäœããã®ã¢ã¬ã€ã«é 眮ããå¿ èŠããããšäž»åŒµããŠããµãŒããŒçšã«æ¢åã® 3 å°ã«å ã㊠XNUMX å°ã®æ°ãããã£ã¹ã¯ã泚æããŸããã æ®å¿µãªãããèšçœ®ããæ°é±éåŸããšã³ãžãã¢ã¯äŒæã§ã€ã³ãã«è¡ã£ããŸãŸæ»ã£ãŠããŸããã§ããã
ãµãŒããŒã¯æ°å¹Žéæ éããããšãªãåäœããŠããŸããããæ°æ¥åã«äŒç€Ÿã®ãããã¯ãŒã¯ããããã³ã°ãããŸããã æ瀺ã«åŸã£ãŠãã»ãã¥ãªã㣠ã¹ã¿ããããµãŒããŒãããã£ã¹ã¯ãåãåºããããªãã«éããŸããã 茞éäžã« XNUMX æã®ãã£ã¹ã¯ãçŽå€±ããŠããŸãã修埩äžå¯èœã§ããã
Wiki ã®æ©èœã埩å ããå¿ èŠããããŸãããŸããWiki ããŒãžã®ã³ã³ãã³ãã«èå³ããããŸãã ãã® Wiki ã®ããŒãžã® 1 ã€ã«ããç¹å®ã®ããã¹ã㯠XNUMXC ãµãŒããŒã®ãã¹ã¯ãŒãã§ãããããã¯ã解é€ããããã«ç·æ¥ã«å¿ èŠã§ãã
ããã«ãWiki ããŒãžãŸãã¯å¥ã®å Žæã®ã©ããã«ãã° ãµãŒããŒãšãããªç£èŠãµãŒããŒã®ãã¹ã¯ãŒããããããããå埩ããããšãæãŸããããããããªããã°äºä»¶ã®èª¿æ»ã¯äžå¯èœã§ãã ãã€ãã®ããã«ãåé¡ãè¿ éã«è§£æ±ºãããããšãæåŸ ããŠããŸãã
3.3 解決ç
1. ææããŠãããã£ã¹ã¯ãã XNUMX ã€ãã€èµ·åããããšããŸãããã©ãã§ãåãã¡ãã»ãŒãžã衚瀺ãããŸãã
No bootable medium found! System halted
äœãããèµ·åããå¿
èŠããããŸãã Live CD/DVD ããã®èµ·å (ãã©ãã«ã·ã¥ãŒãã£ã³ã° -> ã¬ã¹ãã¥ãŒ) ãåã³åœ¹ã«ç«ã¡ãŸãã ããŒãæã«ããŒã ããŒãã£ã·ã§ã³ãèŠã€ããããšããŸãããèŠã€ããããã·ã§ã«ã«ãã©ãçããŸãã ç§ãã¡ã¯ãã£ã¹ã¯ãã©ãæ±ãããç 究ããããšããŠããŸãã ãã®ãã¡ã®7ã€ãããããšãç¥ãããŠããŸãã CentOS ã®ç¬¬ XNUMX ããŒãžã§ã³ã«ã¯ããã®ããã®ããã«å€ãã®ããŒã«ããããã³ãã³ãããããŸãã blkid
ãŸã㯠lsblk
ããã£ã¹ã¯ã«é¢ãããã¹ãŠã®æ
å ±ã衚瀺ãããŸãã
ç§ãã¡ãã©ã®ããã«ããããŠäœãè¡ãã:
$ ls /dev/sd*
ããã¯ããã«æããã§ã
/dev/sdb1 - ext4
/dev/sdb2 - ÑаÑÑÑ lvm
/dev/sda1 О /dev/sdc1 - ÑаÑÑО ÑейЎа
/dev/sda2 О /dev/sdc2 - пÑП МОÑ
МОÑегП Ме ОзвеÑÑМП Ма ÑекÑÑОй ЌПЌеМÑ
sdb1 ãããŠã³ãããŸããããã CentOS 6 ã®ããŒã ããŒãã£ã·ã§ã³ã§ããããšã¯æããã§ãã
$ mkdir /mnt/sdb1 && mount /dev/sdb1 /mnt/sdb1
æããã«ãgrub ã»ã¯ã·ã§ã³ã«ç§»åããéåžžãšã¯ç°ãªããã¡ã€ã«å ã®æåã®ããŒãJames191955Gosling ãèŠã€ããŸãã
2. LVM ã䜿çšããŠãããããpv ãš lvs ãç 究ããŸãã 2 ã€ã®ç©çããªã¥ãŒã ãããã¯ãã§ããã2 ã€ã¯èŠã€ããããuid ã倱ããããšããã¡ãã»ãŒãžã衚瀺ãããŠããããšãããããŸãã ã«ãŒããšã¹ã¯ããã® XNUMX ã€ã®è«çããªã¥ãŒã ãååšããã¯ãã§ãããã«ãŒããéšåçã«å€±ãããŠããŸã (ããªã¥ãŒã ã® P å±æ§)ã ããŠã³ãã§ããªãã®ãæ®å¿µïŒ ç§ãã¡ã«ã¯æ¬åœã«åœŒãå¿ èŠãªã®ã§ãã
ããã« 2 ã€ã®ãã£ã¹ã¯ãããã®ã§ããããã確èªããçµã¿ç«ãŠãŠããŠã³ãããŸãã
$ mdadm --examine --verbose --scan
$ mdadm --assemble --verbose --scan
$ mkdir /mnt/md127 && mount /dev/md127 /mnt/md127
èŠãŠã¿ããšãããã CentOS 6 ã®ããŒã ããŒãã£ã·ã§ã³ã§ããããã§ã«ååšãããã®ã®è€è£œã§ããããšãããããŸãã /dev/sdb1
ããããŠããã§ãåãããŒã§ã - DennisBMacAlistairCRitchie!
çµã¿ç«ãŠæ¹ãèŠãŠã¿ãŸããã /dev/md127
.
$ mdadm --detail /dev/md127
4 æã®ãã£ã¹ã¯ããçµã¿ç«ãŠãããŠããã¯ãã§ãããXNUMX æã®ãã£ã¹ã¯ããçµã¿ç«ãŠãããŠããããšãããããŸãã /dev/sda1
О /dev/sdc1
ããããã¯ã·ã¹ãã å
ã®çªå· 2 ãš 4 ã§ããã¯ãã§ãã ãããšä»®å®ããŸãã /dev/sda2
О /dev/sdc2
é
åãåéããããšãã§ããŸãã ãªãã¡ã¿ããŒã¿ããªãã®ãã¯äžæã§ãããããã¯ãŽã¢ã®ã©ããã«ãã管çè
ã®è¯å¿ã«ãããã®ã§ãã ãªãã·ã§ã³ã¯ãããŸãããRAID10 ãããã¯ãã ãšæ³å®ããŠããŸãã ç§ãã¡ã¯ä»¥äžãåéããŸã:
$ mdadm --create --verbose /dev/md0 --assume-clean --level=10 --raid-devices=4 missing /dev/sda2 missing /dev/sdc2
blkidãpvsãlvs ãèŠãŠãããŸãã 以åã¯äžè¶³ããŠããç©çããªã¥ãŒã ãåéããããšãããããŸããã
lvroot ã¯ããã«ä¿®åŸ©ãããã®ã§ãããŠã³ãããŸãããæåã« VG ãã¢ã¯ãã£ãã«ããŸãã
$ vgchange -a y
$ mkdir /mnt/lvroot && mount /dev/mapper/vg_c6m1-lv_root /mnt/lvroot
ã«ãŒã ããŒã ãã£ã¬ã¯ã㪠/root/sweet ã®ããŒãå«ãããã¹ãŠãããã«ãããŸãã
3. ãµãŒããŒãæ£åžžã«èµ·åããããããµãŒããŒã埩掻ãããããšããŠããŸãã åŒç€Ÿã®ãã¹ãŠã®è«çããªã¥ãŒã /dev/md0
(ãã¹ãŠãèŠã€ããå Žæ) ã«ãã©ãã°ããŸã /dev/sdb2
ããµãŒããŒå
šäœãæåã«åäœããŠããå Žæã
$ pvmove /dev/md0 /dev/sdb2
$ vgreduce vg_c6m1 /dev/md0
ãµãŒããŒã®é»æºãåãããã£ã¹ã¯ 1 ãš 3 ãåãå€ããXNUMX çªç®ã®ãã£ã¹ã¯ã¯ãã®ãŸãŸã«ããŠãLive CD/DVD ãã Rescue ãèµ·åããŸãã ããŒã ããŒãã£ã·ã§ã³ãèŠã€ããŠãgrub ã§ããŒãããŒããŒã埩å ããŸãã
root (hd0,0)
setup (hd0)
ããŒããã£ã¹ã¯ãåãé¢ããŠããŒãã¯æåããŸãããããµã€ãã¯åäœããŸããã
4. Web ãµã€ããèµ·åããã«ã¯ XNUMX ã€ã®ãªãã·ã§ã³ããããŸããApache ãæåããèšå®ããããäºåã«èšå®æžã¿ã® php-fpm 㧠nginx ã䜿çšããŸãã
$ /etc/init.d/nginx start
$ /etc/init.d/php-fpm start
æåŸã«ãMySQL ãèµ·åããå¿ èŠããããŸãã
$ /etc/init.d/mysqld start
å§ãŸããªããçãã¯ããã«ãã /var/log/mysql
ã MySQL ã®åé¡ã解決ãããšããã«ãµã€ãã¯æ©èœããã¡ã€ã³ ããŒãžã«ã㌠(RichardGCCMatthewGNUStallman) ã衚瀺ãããŸãã ããã§ã1C ã«ã¢ã¯ã»ã¹ã§ããããã«ãªããåŸæ¥å¡ã¯çµŠäžãåãåãããšãã§ããããã«ãªããŸãã ãããŠãã€ãã®ããã«ã瀟å
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