{"id":731,"date":"2016-12-07T10:54:18","date_gmt":"2016-12-07T19:54:18","guid":{"rendered":"\/blog\/?p=731"},"modified":"2023-09-21T09:37:50","modified_gmt":"2023-09-21T00:37:50","slug":"systemd%ec%97%90%ec%84%9c-%eb%b6%80%ed%8c%85%ec%8b%9c-%ec%8b%a4%ed%96%89%ed%95%a0-%ec%84%9c%eb%b9%84%ec%8a%a4-%ea%b4%80%eb%a6%ac%ed%95%98%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/hasu0707.duckdns.org\/blog\/?p=731","title":{"rendered":"systemd\uc5d0\uc11c \ubd80\ud305\uc2dc \uc2e4\ud589\ud560 \uc11c\ube44\uc2a4 \uad00\ub9ac\ud558\uae30"},"content":{"rendered":"\n

\ucd9c\ucc98 : <\/span>https:\/\/www.conory.com\/note_linux\/42241<\/span><\/a><\/p>\r\n


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\uc6d0\ub798 \ubd80\ud305\uc2dc <\/span>\uc815\ud574\uc9c4 \uc11c\ube44\uc2a4 \ub610\ub294 \uc2a4\ud06c\ub9bd\ud2b8\ub97c \uc2e4\ud589\uc2dc\ud0a4\ub294 \uac74 init (System V Init)\ub77c\ub294 \ud504\ub85c\uadf8\ub7a8\uc758 \ubaab\uc774\uc600\uc2b5\ub2c8\ub2e4. \uc720\ub2c9\uc2a4\uac00 \ucc98\uc74c \uc0dd\uae38\ub54c\ubd80\ud130 \uadf8\ub798\uc654\uace0, \uc9c0\uae08\ub3c4 \uadf8\ub807\uc2b5\ub2c8\ub2e4.(\ud558\uc9c0\ub9cc \uc9c0\uae08\uc740 \ub2e4\ub978 \uc544\uc774\ub85c \uad50\uccb4\ub418\ub294 \uc2dc\uae30\uc785\ub2c8\ub2e4.) init\ub294 \uadf8 \uc774\ub984\ucc98\ub7fc \ub9ac\ub205\uc2a4\uc758 \ucd08\uae30\ud654\ubd80\ubd84\uc744 \ub2f4\ub2f9\ud569\ub2c8\ub2e4.<\/span><\/p>\r\n


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init \uc0ac\uc6a9\uc790\ub4e4\uc774 \/etc\/rc.d\/init.d \ub514\ub809\ud1a0\ub9ac\uc5d0 \ubd80\ud305\uc2dc \uc2e4\ud589\ud560 \uc11c\ube44\uc2a4 \uc2a4\ud06c\ub9bd\ud2b8\ub97c \ub123\uc73c\uba74, init\ub294 \ubd80\ud305\uc774\ub098 \ud2b9\uc815\ud589\ub3d9\uc774 \uc788\uc744\ub54c \uadf8 \uc2a4\ud06c\ub9bd\ud2b8\ub4e4\uc744 \uc790\ub3d9\uc73c\ub85c \uc2e4\ud589\uc2dc\ud0a4\ub294 \uc5ed\ud65c\uc744 \ud588\uc5c8\uc2b5\ub2c8\ub2e4. \uadf8\ub7ec\uba74 \uc0ac\uc6a9\uc790\ub4e4\uc740 chkconfig\uba85\ub839\uc73c\ub85c \uc790\ub3d9\uc2e4\ud589 \uc11c\ube44\uc2a4\ub97c \uad00\ub9ac\ud558\uac70\ub098 service start \uba85\ub839\uc73c\ub85c \uc11c\ube44\uc2a4\ub4e4\uc744 \uc2e4\ud589\ud0a4\uac70\ub098 \ub04c \uc218 \uc788\uc5c8\uc2b5\ub2c8\ub2e4.<\/span><\/p>\r\n


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\ud558\uc9c0\ub9cc centos 7\uc744 \ub118\uc5b4\uc628 \ud604\uc7ac...<\/span><\/p>\r\n

\ub05d\uae4c\uc9c0 \uc720\uc9c0\ub420 \uac83 \uac19\uc558\ub358 init\ub294 systemd\uc774\ub77c\ub294 <\/span>\uc0c8\ub85c\uc6b4<\/span> \uc544\uc774\uc5d0\uac8c \uc784\ubb34\ub97c \ube7c\uc557\ubc84\ub838\ub2f5\ub2c8\ub2e4. \uacb0\uad6d \uc720\ub205\uc2a4 \ud0c4\uc0dd\ubd80\ud130 \ud56d\uc0c1 init\uac00 \uc788\uc5c8\ub358 \uc790\ub9ac.. \ud504\ub85c\uc138\uc2a41(<\/span>PID 1<\/span>)\uc758 \uc790\ub9ac \ub610\ud55c <\/span>systemd\uc5d0\uac8c \ube7c\uc557\uae30\uace0 \ub9d0\uc558\uc2b5\ub2c8\ub2e4. <\/span><\/p>\r\n

\ub530\ub77c\uc11c centos 7\uc5d0\uc11c\ub294 \ubd80\ud305 \uc11c\ube44\uc2a4\ub97c <\/span>systemd \uc5d0\uc11c \uad00\ub9ac\ud558\uac8c \ub418\uc5c8\uc2b5\ub2c8\ub2e4. init\ub294 \uc5c6\uc5b4\uc9c0\uc9c0\ub294 \uc54a\uc558\uc9c0\ub9cc \uc81c \uae30\ub2a5\uc744 \ud558\uc9c0\ubabb\ud558\ub294 \uc0c1\ud0dc\uc785\ub2c8\ub2e4.<\/span><\/p>\r\n


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1. init\ub97c \ubc00\uc5b4\ub0b8 \uc0c8\ub85c\uc6b4 \uc544\uc774 systemd\uc758 \uc815\uccb4<\/span><\/strong><\/span>
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systemd\ub294 init\uc5d0 \ube44\ud574 \uc6b0\uc6d4\ud55c \uc131\ub2a5\uacfc \ubb50\ub4e0\uc9c0 \uc798\ud558\ub294 \uc7ac\ub2a5(\uae30\ub2a5)\uc744 \uac00\uc9c0\uace0 \uc788\uc5c8\uc2b5\ub2c8\ub2e4. \uadf8\uc57c\ub9d0\ub85c \"\uc5c4\uce5c\uc544\"\uc600\ub358 \uac83\uc785\ub2c8\ub2e4. \uadf8\ub7ec\ub2c8\uae4c \uac1c\ubc1c\uc790\ub4e4\ub3c4 systemd \ub9e4\ub825\uc5d0 \ud760\ubed1 \ube60\uc84c\uae30\uc5d0 \ub370\ub824\uc654\uaca0\uc8e0.. <\/span><\/p>\r\n


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systemd\ub294 \uc815\ub9d0 \uae30\ub2a5\uc774 \ub9ce\uc2b5\ub2c8\ub2e4. \uc11c\ube44\uc2a4\uad00\ub9ac, \uc2dc\uc2a4\ud15c \ub85c\uadf8\uad00\ub9ac, \uc0ac\uc6a9\uc790\uad00\ub9ac, \uc2dc\uac04, \uc6d0\uaca9, cgroup \uad00\ub9ac\ub4f1.. \ucc38 \ud560 \uc218 \uc788\ub294 \uc77c\uc774 \ub9ce\uc2b5\ub2c8\ub2e4. \uc2dc\uc2a4\ud15c\uc758 \uc804\ubc18\uc801\uc778 \uad00\ub9ac\ub97c \uc804\ubd80 systemd \uc774 \ub2f4\ub2f9\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uadf8\ub9ac\uace0 \uc544\uc774\ub294 \ubd80\ud305\uc2dc \uc2e4\ud589\ud558\ub294 \uc11c\ube44\uc2a4\ub97c \ucd5c\uc18c\ud654\ud558\uace0, \ucd94\ud6c4 \ubcd1\ub82c\uc2e4\ud589\uc774\ub77c\ub294 \uc815\ucc45\uc744 \uac16\uace0 \uc788\uc5c8\uc2b5\ub2c8\ub2e4. \ub54c\ubb38\uc5d0 <\/span>centos 7 \uc5d0\uc11c\ub294 \ubd80\ud305\uc2dc\uac04\uc774 \ub9ce\uc774 \uc79b\uc544\uc84c\ub2f5\ub2c8\ub2e4.<\/span><\/p>\r\n


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\ucc38\uc870\uc0ac\ud56d :<\/span> <\/span>http:\/\/www.freedesktop.org\/wiki\/Software\/systemd\/<\/span><\/a>
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\uc7a1\uc124\uc774\uc9c0\ub9cc, \uc544\uc774\ub97c \ub370\ub824\uc624\uae30\uc804 \ub9d0\ub4e4\uc774 \ub9ce\uc558\ub2e4\uace0 \ud574\uc694.. \uae30\ub2a5\ub9ce\uc740 \uc544\uc774\uac00 \"<\/span>\ud55c\uac00\uc9c0\ub9cc \uc798\ud558\uc790<\/span><\/strong>\"\ub77c\ub294 \uc720\ub2c9\uc2a4\uc758 \ucca0\ud559(?)\uacfc \ub9de\uc9c0\uc54a\ub2e4\ub294 \uc758\uacac\ub3c4 \uc788\uc5c8\uace0, \uc624\ub7ab\ub3d9\uc548 \ud568\uaed8\ud55c init\ub97c \ubc84\ub9ac\uc790\ub2c8, \uc2ac\ud504\ub2e4(?)\ub294 \uc758\uacac\ub3c4 \uc788\uc5c8\uc2b5\ub2c8\ub2e4. \uc774\ucc98\ub7fc \ub17c\ub780\uc774 \uc788\uc5c8\ub2e4\uace0 \ud574\uc694.. \uc9d1\uc548(\ub9ac\ub205\uc2a4)\uc5d0 \uc0c8\ub85c\uc6b4 \uc544\uc774\ub97c \ub4e4\uc774\ub294 \ubb38\uc81c\ub85c...<\/span>
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2. systemd \uc7a0\uc2dc \uc0b4\ud3b4\ubcf4\uae30<\/span><\/strong><\/span><\/p>\r\n

\uc774 \uae00\uc758 \ubaa9\uc801\uacfc\ub294 \ubcc4\ub85c \uc0c1\uad00\uc5c6\uc9c0\ub9cc, \uadf8\ub798\ub3c4 \uc0c8\ub85c\uc6b4 \uc544\uc774\ub97c \ub9cc\ub0ac\uc73c\ub2c8, \ud55c\ubc88 \uc0b4\ud3b4\ubd05\uc2dc\ub2e4.<\/span><\/p>\r\n


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\uba3c\uc800 systemd\uc758 \uc124\uc815\ud30c\uc77c\ub4e4\uc740 \/etc\/systemd \uc5d0 \uc788\uc2b5\ub2c8\ub2e4. <\/span><\/p>\r\n

( bootchart.conf  logind.conf  system.conf  user.conf )<\/span>
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systemd\ub294 <\/span>\uc124\uc815\ud30c\uc77c\uacfc \ubbf8\ub9ac \uc815\uc758\ub41c Service, Target \ud30c\uc77c\uc744 \ud1b5\ud574\uc11c \uc2dc\uc2a4\ud15c\uc744 \uc81c\uc5b4\ud558\uac8c \ub429\ub2c8\ub2e4. \ud30c\uc77c\uc774 \uc788\ub294 \ub514\ub809\ud1a0\ub9ac\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/span><\/p>\r\n

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