{"id":3336,"date":"2019-08-04T02:23:47","date_gmt":"2019-08-03T17:23:47","guid":{"rendered":"https:\/\/tech.akat.info\/?p=3336"},"modified":"2019-08-04T02:23:47","modified_gmt":"2019-08-03T17:23:47","slug":"linux%e6%95%99%e7%a7%91%e6%9b%b8-lpic%e3%83%ac%e3%83%99%e3%83%ab2-%e3%82%b9%e3%83%94%e3%83%bc%e3%83%89%e3%83%9e%e3%82%b9%e3%82%bf%e3%83%bc%e5%95%8f%e9%a1%8c%e9%9b%86-version4-5%e5%af%be%e5%bf%9c-2","status":"publish","type":"post","link":"https:\/\/tech.akat.info\/?p=3336","title":{"rendered":"Linux\u6559\u79d1\u66f8 LPIC\u30ec\u30d9\u30eb2 \u30b9\u30d4\u30fc\u30c9\u30de\u30b9\u30bf\u30fc\u554f\u984c\u96c6 Version4.5\u5bfe\u5fdc \u3092\u53c2\u8003\u306bLPIC2\u306e\u52c9\u5f37\u3092\u3057\u305f &#8211; \u305d\u306e\u306b &#8211;"},"content":{"rendered":"<p><a href=\"https:\/\/www.amazon.co.jp\/dp\/4798151238\">Linux\u6559\u79d1\u66f8 LPIC\u30ec\u30d9\u30eb2 \u30b9\u30d4\u30fc\u30c9\u30de\u30b9\u30bf\u30fc\u554f\u984c\u96c6 Version4.5\u5bfe\u5fdc<\/a>\u3092\u53c2\u8003\u306bLPIC2\u306e\u52c9\u5f37\u3092\u3057\u305f\u3002<br \/>\n\u77e5\u3089\u306a\u304b\u3063\u305f\u3053\u3068\u3092\u30e1\u30e2\u3057\u3066\u304a\u304f\u3002<\/p>\n<h2>Linux\u30ab\u30fc\u30cd\u30eb<\/h2>\n<h3>\u30ab\u30fc\u30cd\u30eb\u30d0\u30fc\u30b8\u30e7\u30f3<\/h3>\n<p>\u30fbprepatch\u3084RC\u3068\u547c\u3070\u308c\u308b\u958b\u767a\u7248\u3092\u30ea\u30fc\u30ca\u30b9\u304c\u30ea\u30ea\u30fc\u30b9\u3059\u308b\u306e\u304cmainline<br \/>\n\u30fbmainline\u306f3.0\u21923.1\u21923.2&#8230;\u3068\u7d9a\u3044\u3066\u3044\u304f<br \/>\n\u30fbmainline\u304b\u3089\u30d0\u30b0\u30d5\u30a3\u30c3\u30af\u30b9\u306a\u3069\u3057\u3066stable\u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u308b<br \/>\n\u30003.0.1\u21923.0.2\u2192&#8230;\u3068\u7d9a\u3044\u3066\u3044\u304f<\/p>\n<h2>\u9ad8\u5ea6\u306a\u30b9\u30c8\u30ec\u30fc\u30b8\u3067\u3068\u30c7\u30d0\u30a4\u30b9\u306e\u7ba1\u7406<\/h2>\n<h3>\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2RAID\u3092\u5b9f\u73fe\u3059\u308b<\/h3>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\n# dd if=\/dev\/zero of=disk1.img bs=1M count=256\r\n# dd if=\/dev\/zero of=disk2.img bs=1M count=256\r\n\r\n# losetup \/dev\/loop1 disk1.img\r\n# losetup \/dev\/loop2 disk2.img\r\n# losetup -l\r\nNAME       SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE\r\n\/dev\/loop1         0      0         0  0 \/home\/shimizu\/LPIC2\/disk1.img\r\n\/dev\/loop2         0      0         0  0 \/home\/shimizu\/LPIC2\/disk2.img\r\n\r\n# mdadm -C \/dev\/md0 --level 1 --raid-devices 2 --spare-devices 0 \/dev\/loop1 \/dev\/loop2\r\nmdadm: Note: this array has metadata at the start and\r\n    may not be suitable as a boot device.  If you plan to\r\n    store '\/boot' on this device please ensure that\r\n    your boot-loader understands md\/v1.x metadata, or use\r\n    --metadata=0.90\r\nContinue creating array? y\r\nmdadm: Defaulting to version 1.2 metadata\r\nmdadm: array \/dev\/md0 started.\r\n\r\n# mdadm -D \/dev\/md0\r\n\/dev\/md0:\r\n        Version : 1.2\r\n  Creation Time : Wed Jul 31 14:46:35 2019\r\n     Raid Level : raid1\r\n     Array Size : 261824 (255.73 MiB 268.11 MB)\r\n  Used Dev Size : 261824 (255.73 MiB 268.11 MB)\r\n   Raid Devices : 2\r\n  Total Devices : 2\r\n    Persistence : Superblock is persistent\r\n\r\n    Update Time : Wed Jul 31 14:46:37 2019\r\n          State : clean\r\n Active Devices : 2\r\nWorking Devices : 2\r\n Failed Devices : 0\r\n  Spare Devices : 0\r\n\r\n           Name : hostname:0  (local to host hostname)\r\n           UUID : 088cdd35:f5f37a1f:87254876:74b21e2d\r\n         Events : 17\r\n\r\n    Number   Major   Minor   RaidDevice State\r\n       0       7        1        0      active sync   \/dev\/loop1\r\n       1       7        2        1      active sync   \/dev\/loop2\r\n\r\n# cat \/proc\/mdstat\r\nPersonalities : &#x5B;raid1]\r\nmd0 : active raid1 loop2&#x5B;1] loop1&#x5B;0]\r\n      261824 blocks super 1.2 &#x5B;2\/2] &#x5B;UU]\r\n<\/pre>\n<h3>\u30c7\u30a3\u30b9\u30af\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u7121\u52b9\u306b\u3057\u3066\u3001\u30c7\u30a3\u30b9\u30af\u306e\u901f\u5ea6\u3092\u6e2c\u308b<\/h3>\n<p>W0\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u5bfe\u5fdc\u3067\u304d\u308b\u306f\u305a\u3060\u304c\u3001\u3055\u304f\u3089\u306eVPS\u3067\u306f\u7121\u7406\u3060\u3063\u305f\u3002<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\n# hdparm -W0 \/dev\/vda\r\n\r\n\/dev\/vda:\r\n setting drive write-caching to 0 (off)\r\n HDIO_DRIVE_CMD(identify) failed: Inappropriate ioctl for device\r\n HDIO_DRIVE_CMD(flushcache) failed: Inappropriate ioctl for device\r\n HDIO_DRIVE_CMD(setcache) failed: Inappropriate ioctl for device\r\n HDIO_DRIVE_CMD(identify) failed: Inappropriate ioctl for device\r\n HDIO_DRIVE_CMD(flushcache) failed: Inappropriate ioctl for device\r\n HDIO_DRIVE_CMD(identify) failed: Inappropriate ioctl for device\r\n\r\n# hdparm -t \/dev\/vda\r\n\r\n\/dev\/vda:\r\n Timing buffered disk reads: 540 MB in  3.01 seconds = 179.69 MB\/sec\r\n<\/pre>\n<h2>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u69cb\u6210<\/h2>\n<h3>NIC\u306e\u7d71\u8a08\u60c5\u5831<\/h3>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\n# cat \/proc\/net\/dev\r\nInter-|   Receive                                                |  Transmit\r\n face |bytes    packets errs drop fifo frame compressed multicast|bytes    packets errs drop fifo colls carrier compressed\r\n    lo:  282844    2758    0    0    0     0          0         0   282844    2758    0    0    0     0       0          0\r\n  eth0: 95877951  167911    0    0    0     0          0         0 84794604  117009    0    0    0     0       0          0\r\n<\/pre>\n<h3>ping\u306e\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u9001\u4fe1<\/h3>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\n# ping -b 192.168.255.255\r\n<\/pre>\n<h3>TCP\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u306e\u72b6\u614b\u3092\u8868\u793a\u3059\u308b<\/h3>\n<p>netstat\u30b3\u30de\u30f3\u30c9\u306f \/proc \u914d\u4e0b\u3092\u78ba\u8a8d\u3059\u308b\u304c\u3001ss\u30b3\u30de\u30f3\u30c9\u306f\u76f4\u63a5\u30ab\u30fc\u30cd\u30eb\u304b\u3089\u30bd\u30b1\u30c3\u30c8\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b\u306e\u305f\u3081\u9ad8\u901f\u3002<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\n# ss -t\r\nState           Recv-Q            Send-Q                          Local Address:Port                          Peer Address:Port\r\nESTAB           0                 0                                172.26.9.139:ssh                          27.xx.xx.xx:50863\r\nESTAB           0                 0                                172.26.9.139:ssh                          27.xx.xx.xx:50860\r\n<\/pre>\n<h3>OS\u3092\u5224\u5225\u3059\u308b<\/h3>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\n# nmap -O 172.26.9.139\r\n\r\nStarting Nmap 7.60 ( https:\/\/nmap.org ) at 2019-08-03 12:19 JST\r\nNmap scan report for ip-172-26-9-139.ap-northeast-1.compute.internal (172.26.9.139)\r\nHost is up (0.000010s latency).\r\nNot shown: 997 closed ports\r\nPORT    STATE SERVICE\r\n22\/tcp  open  ssh\r\n80\/tcp  open  http\r\n443\/tcp open  https\r\nDevice type: general purpose\r\nRunning: Linux 3.X|4.X\r\nOS CPE: cpe:\/o:linux:linux_kernel:3 cpe:\/o:linux:linux_kernel:4\r\nOS details: Linux 3.8 - 4.9\r\nNetwork Distance: 0 hops\r\n\r\nOS detection performed. Please report any incorrect results at https:\/\/nmap.org\/submit\/ .\r\nNmap done: 1 IP address (1 host up) scanned in 3.82 seconds\r\n<\/pre>\n<h2>\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0<\/h2>\n<h3>\u30b7\u30b9\u30c6\u30e0\u3067\u5229\u7528\u3057\u3066\u3044\u308b\u3059\u3079\u3066\u306e\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u306e\u30e9\u30d9\u30eb\u3001uuid\u3001\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u30bf\u30a4\u30d7\u3092\u51fa\u529b\u3059\u308b<\/h3>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\n# blkid\r\n\/dev\/xvda1: LABEL=&quot;cloudimg-rootfs&quot; UUID=&quot;bbf64c6d-bc15-4ae0-aa4c-608fd9820d95&quot; TYPE=&quot;ext4&quot; PARTUUID=&quot;9f3e4931-01&quot;\r\n\/dev\/loop0: TYPE=&quot;squashfs&quot;\r\n\/dev\/loop1: TYPE=&quot;squashfs&quot;\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Linux\u6559\u79d1\u66f8 LPIC\u30ec\u30d9\u30eb2 \u30b9\u30d4\u30fc\u30c9\u30de\u30b9\u30bf\u30fc\u554f\u984c\u96c6 Version4.5\u5bfe\u5fdc\u3092\u53c2\u8003\u306bLPIC2\u306e\u52c9\u5f37\u3092\u3057\u305f\u3002 \u77e5\u3089\u306a\u304b\u3063\u305f\u3053\u3068\u3092\u30e1\u30e2\u3057\u3066\u304a\u304f\u3002 Linux\u30ab\u30fc\u30cd\u30eb \u30ab\u30fc\u30cd\u30eb\u30d0\u30fc\u30b8\u30e7\u30f3 \u30fbprepatch\u3084RC\u3068\u547c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[2],"tags":[],"_links":{"self":[{"href":"https:\/\/tech.akat.info\/index.php?rest_route=\/wp\/v2\/posts\/3336"}],"collection":[{"href":"https:\/\/tech.akat.info\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tech.akat.info\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tech.akat.info\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tech.akat.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3336"}],"version-history":[{"count":1,"href":"https:\/\/tech.akat.info\/index.php?rest_route=\/wp\/v2\/posts\/3336\/revisions"}],"predecessor-version":[{"id":3337,"href":"https:\/\/tech.akat.info\/index.php?rest_route=\/wp\/v2\/posts\/3336\/revisions\/3337"}],"wp:attachment":[{"href":"https:\/\/tech.akat.info\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3336"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tech.akat.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3336"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tech.akat.info\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3336"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}