{"id":349,"date":"2017-08-10T15:49:23","date_gmt":"2017-08-10T07:49:23","guid":{"rendered":"https:\/\/blog.jsjs.org\/?p=349"},"modified":"2017-08-10T15:49:23","modified_gmt":"2017-08-10T07:49:23","slug":"centos-7-%e7%94%a8%e6%88%b7%e8%b4%a6%e6%88%b7%e9%85%8d%e7%bd%ae","status":"publish","type":"post","link":"https:\/\/blog.jsjs.org\/?p=349","title":{"rendered":"CentOS 7 \u7528\u6237\u8d26\u6237\u914d\u7f6e"},"content":{"rendered":"
<\/div>\n
\n
\n

\u8bf4\u660e\uff1a<\/strong><\/p>\n

1\u3001\u8fd9\u7bc7\u535a\u6587\u8bb0\u5f55\u7684\u662fCentOS 7 \u7528\u6237\u8d26\u6237\u7684\u914d\u7f6e\uff0c\u5305\u62ec\u6dfb\u52a0\u7528\u6237\u3001\u6dfb\u52a0\u7528\u6237\u7ec4\u3001\u5220\u9664\u7528\u6237\u3001\u5220\u9664\u7528\u6237\u7ec4\u7b49\u3002\u5176\u4e2d\u5305\u62ec\u5206\u6790\u7528\u6237\u7684\u914d\u7f6e\u6587\u4ef6\u3001\u76ee\u5f55\u4ee5\u53ca\u5bf9\u5b89\u5168\u7684\u601d\u8003\u3002<\/p>\n

2\u3001\u7528\u6237\u914d\u7f6e\u65b9\u9762CentOS 7\u4e0e\u4ee5\u5f80\u7248\u672c\u611f\u89c9\u6ca1\u6709\u5dee\u522b\u3002<\/p>\n

\u7b2c\u4e00\u90e8\u5206 \u8ba4\u8bc6\u7528\u6237<\/strong><\/p>\n

Centos 7 \u7cfb\u7edf\u6700\u5c0f\u5316\u5b89\u88c5\uff0c\u9ed8\u8ba4\u914d\u7f6e\uff0c\u662f\u6ca1\u6709\u521b\u5efa\u5176\u4ed6\u7528\u6237\u7684\u3002\u4f5c\u4e3a\u670d\u52a1\u5668\u64cd\u4f5c\u7cfb\u7edf\uff0c\u4e3a\u4e86\u5b89\u5168\u8d77\u89c1\uff0c\u4e00\u822c\u662f\u4f7f\u7528\u4e00\u822c\u7528\u6237\u3002\u8fd9\u5c31\u7275\u6d89\u5230\u7528\u6237\u3001\u7528\u6237\u7ec4\u7684\u521b\u5efa\u4ee5\u53ca\u5220\u9664\u3002<\/p>\n

\u6b64\u5916\uff0cCentOS 7 \u548c\u5176\u4ed6\u7248\u672c\u7684Linux\u4e00\u6837\uff0c\u90fd\u5177\u6709\u76f8\u5e94\u7528\u6237\u7684\u914d\u7f6e\u6587\u4ef6\u53ca\u76ee\u5f55\uff0c\u5982\u4e0b\uff1a<\/p>\n

\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n
\/etc\/passwd \u3000\u3000      \/\/\u7528\u6237\u8d26\u6237\u4fe1\u606f\uff0c\u53ef\u4ee5\u770b\u51fa\u7528\u6237\u540d\u79f0\n\/etc\/shadow          \/\/\u7528\u6237\u8d26\u6237\u52a0\u5bc6\u540e\u4fe1\u606f\uff0c\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\/etc\/passwd\u4e2d\u7684\u4fe1\u606f\n\/etc\/group           \/\/\u7ec4\u8d26\u6237\u4fe1\u606f\uff0c\u53ef\u4ee5\u770b\u51fa\u7ec4\u540d\u79f0\n\/etc\/gshadow   \u3000\u3000\u3000 \/\/\u7ec4\u8d26\u6237\u5b89\u5168\u4fe1\u606f\uff0c\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\/etc\/group\u4e2d\u7684\u4fe1\u606f\n\/etc\/default\/useradd \/\/\u8d26\u6237\u521b\u5efa\u65f6\u9ed8\u8ba4\u503c\n\/etc\/skel\/           \/\/\u5305\u542b\u9ed8\u8ba4\u6587\u4ef6\u7684\u76ee\u5f55,\u5177\u4f53\u4f5c\u7528\u5c1a\u4e0d\u6e05\u695a\n\/etc\/login.defs      \/\/\u5b89\u5168\u6027\u7684\u9ed8\u8ba4\u914d\u7f6e\uff0c\u4e0e\u4e0a\u9762\/etc\/default\/useradd\u6709\u533a\u522b<\/pre>\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n<\/div>\n
\u6211\u4eec\u770b\u4e00\u4e0b\u6bd4\u8f83\u91cd\u8981\u7684\u914d\u7f6e\u6587\u4ef6\/etc\/default\/useradd\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n
\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n
# useradd defaults file\nGROUP=100                        \/\/\u8d77\u59cbGID\u503c\nHOME=\/home                       \/\/\u5bb6\u76ee\u5f55\u4f4d\u7f6e\nINACTIVE=-1\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000 \/\/\u6709\u6548\u65f6\u95f4\uff0c\u8d1f\u503c\u4e3a\u6c38\u4e45\uff0c\u6b63\u6570\u4ee3\u8868\u5929\u6570\nEXPIRE=\nSHELL=\/bin\/bash                   \/\/shell\u8def\u5f84\nSKEL=\/etc\/skel                    \/\/\u9ed8\u8ba4\u914d\u7f6e\u6587\u4ef6\u8def\u5f84\nCREATE_MAIL_SPOOL=yes             \/\/\u662f\u5426\u521b\u5efa\u90ae\u4ef6\u6c60\uff0c\u5177\u4f53\u4f5c\u7528\u5f85\u4ee5\u540e\u5b66\u4e60<\/pre>\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n<\/div>\n
\u6211\u4eec\u518d\u6765\u770b\u4e00\u4e0b\/etc\/login.defs\u6587\u4ef6\uff0c\u91cd\u70b9\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n
\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n
MAIL_DIR        \/var\/spool\/mail\n...\n\n# Password aging controls:           \u5bc6\u7801\u671f\u9650\u914d\u7f6e\n#\n#\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 PASS_MAX_DAYS\u00a0\u00a0 Maximum number of days a password may be used.\n#\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 PASS_MIN_DAYS\u00a0\u00a0 Minimum number of days allowed between password changes.\n#\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 PASS_MIN_LEN\u00a0\u00a0\u00a0 Minimum acceptable password length.\n#\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 PASS_WARN_AGE\u00a0\u00a0 Number of days warning given before a password expires.\n#\nPASS_MAX_DAYS\u00a0\u00a0 99999\nPASS_MIN_DAYS\u00a0\u00a0 0\nPASS_MIN_LEN\u00a0\u00a0\u00a0 8\nPASS_WARN_AGE\u00a0\u00a0 7\n...\n\n# Min\/max values for automatic uid selection in useradd      \u6700\u5c0f\/\u6700\u5927UID\u8bbe\u7f6e\n#\nUID_MIN\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1000              \/\/\u6211\u4eec\u521b\u5efa\u7684\u7528\u6237\u7684UID\u4ece1000\u5f00\u59cb\nUID_MAX\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 60000\n....\n\n# Min\/max values for automatic gid selection in groupadd\n#\nGID_MIN\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1000\nGID_MAX\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 60000\n....\nCREATE_HOME\u00a0\u00a0\u00a0\u00a0 yes                   \/\/\u662f\u5426\u521b\u5efa\u5bb6\u76ee\u5f55\n...\n\n# Use SHA512 to encrypt password.        \/\/\u91c7\u7528SHA512\u52a0\u5bc6\nENCRYPT_METHOD SHA512<\/pre>\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n<\/div>\n
\u4ece\u6587\u4ef6\u5185\u5bb9\u53ef\u89c1\uff0c\/etc\/login.defs\u00a0\u662f\u6bd4\u8f83\u5b8f\u89c2\u7684\u8fdb\u884c\u504f\u91cd\u5b89\u5168\u65b9\u9762\u7684\u914d\u7f6e\u3002<\/p>\n
\u4e0b\u9762\u662f\u4e00\u4e9b\u5b9e\u9645\u8fc7\u7a0b\u4e2d\u5e38\u7528\u7684\u547d\u4ee4\uff1a<\/p>\n
\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n
useradd         \/\/\u6dfb\u52a0\u7528\u6237\npasswd          \/\/\u4e3a\u7528\u6237\u8bbe\u7f6e\u5bc6\u7801\nuserdel         \/\/\u5220\u9664\u7528\u6237\nusermod         \/\/\u4fee\u6539\u7528\u6237\u4fe1\u606f\ngroupadd       \/\/\u6dfb\u52a0\u7528\u6237\u7ec4\ngroupdel        \/\/\u5220\u9664\u7528\u6237\u7ec4\ngroupmod        \/\/\u4fee\u6539\u7528\u6237\u7ec4\u4fe1\u606f\ngroups          \/\/\u663e\u793a\u5f53\u524d\u8fdb\u7a0b\u7528\u6237\u6240\u5c5e\u7684\u7528\u6237\u7ec4\n<\/pre>\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n<\/div>\n
 <\/p>\n
\u7b2c\u4e8c\u90e8\u5206 \u00a0\u521b\u5efa\u7528\u6237<\/strong><\/p>\n
\u4f8b\u5b50\u4e00\uff1a \u6700\u7b80\u5355\u7684\u521b\u5efa\u7528\u6237<\/strong><\/p>\n
\u6267\u884c\u5982\u4e0b\u547d\u4ee4\uff1a<\/p>\n
useradd test<\/p>\n
passwd test<\/p>\n
\u5b9e\u4f8b\u5982\u56fe\uff0c\u5e76\u4e14\u7cfb\u7edf\u4f1a\u5bf9\u5bc6\u7801\u505a\u9650\u5236\uff0c\u6bd4\u5982\u957f\u5ea6\u3001\u590d\u6742\u5ea6\uff0c\u4f46\u662f\u4e0d\u5f71\u54cd\u521b\u5efa\u3002\u53ef\u4ee5\u7406\u89e3\u4e3a\u201c\u6e29\u99a8\u63d0\u793a\u201d\u3002<\/p>\n
\"\"<\/p>\n
\u8fd9\u6837\u4e00\u4e2a\u7528\u6237\u540d\u4e3atest\u7684\u7528\u6237\u5df2\u7ecf\u521b\u5efa\u597d\u4e86\u3002\u6211\u4eec\u770b\u4e00\u4e0b\u5c5e\u6027\u3002<\/p>\n
\u6267\u884c\u547d\u4ee4\uff1aid test\u00a0\u00a0 \/\/\u67e5\u770b\u7528\u6237\u4fe1\u606f<\/p>\n
\"\"<\/p>\n
\u6211\u4eec\u53d1\u73b0test\u7684uid=1000,gid=1000,\u4f4d\u4e8etest\u7528\u6237\u7ec4\uff0c\u8bf4\u660e\u7f3a\u53c2\u6570\u7684\u65b0\u5efa\u7528\u6237\uff0c\u4f1a\u9ed8\u8ba4\u65b0\u5efa\u4e00\u4e2a\u4e0e\u7528\u6237\u540d\u540c\u540d\u7684\u7528\u6237\u7ec4\u5e76\u52a0\u5165\u5176\u4e2d\uff0c\u6211\u4eec\u4e5f\u6ce8\u610f\u5230UID\u3001GID\u7684\u503c\u4e0e\u9ed8\u8ba4\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\u4fdd\u6301\u4e00\u81f4\uff0c\u53ef\u89c1\u914d\u7f6e\u6587\u4ef6\u662f\u751f\u6548\u7684\uff0c\u540c\u6837\u4e5f\u53ef\u4ee5\u518d\u65b0\u5efa\u4e00\u4e2a\u7528\u6237\uff0c\u770b\u4e00\u4e0bUID\u3001GID\u7684\u503c,\u4f1a\u770b\u5230\u662f1001.\u53ef\u4ee5\u5c1d\u8bd5\u4e00\u4e0b\u3002\u6211\u4eec\u53ef\u4ee5\u5207\u5230\/home\u76ee\u5f55\u4e0b\uff0c\u4f1a\u770b\u5230\u7528\u6237\u76ee\u5f55\uff0c\u4e0e\u914d\u7f6e\u6587\u4ef6\u8bbe\u5b9a\u4e00\u81f4\u3002<\/p>\n
\u4f8b\u5b50\u4e8c\uff1a\u5e26\u53c2\u6570\u7684\u521b\u5efa\u8d26\u6237<\/strong><\/p>\n
\u4e0a\u4e2a\u4f8b\u5b50\u6211\u4eec\u91c7\u7528\u9ed8\u8ba4\u914d\u7f6e\uff0c\u53ea\u662f\u8bbe\u7f6e\u4e86\u7528\u6237\u540d\u548c\u5bc6\u7801\u3002\u8fd9\u6b21\u6211\u4eec\u624b\u52a8\u8bbe\u7f6eUID\u3001GID\u7b49\u3002\u9996\u5148\u6211\u4eec\u770b\u4e00\u4e0b\uff0cuseradd\u7684\u53c2\u6570\uff0c\u5982\u4e0b\uff1a<\/p>\n
\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n
\u3000-b, --base-dir BASE_DIR       \u65b0\u8d26\u6237\u7684\u4e3b\u76ee\u5f55\u7684\u57fa\u76ee\u5f55\n  -c, --comment COMMENT         \u65b0\u8d26\u6237\u7684 GECOS \u5b57\u6bb5\n  -d, --home-dir HOME_DIR       \u65b0\u8d26\u6237\u7684\u4e3b\u76ee\u5f55\n  -D, --defaults                \u663e\u793a\u6216\u66f4\u6539\u9ed8\u8ba4\u7684 useradd \u914d\u7f6e\n -e, --expiredate EXPIRE_DATE  \u65b0\u8d26\u6237\u7684\u8fc7\u671f\u65e5\u671f\n  -f, --inactive INACTIVE       \u65b0\u8d26\u6237\u7684\u5bc6\u7801\u4e0d\u6d3b\u52a8\u671f\n  -g, --gid GROUP               \u65b0\u8d26\u6237\u4e3b\u7ec4\u7684\u540d\u79f0\u6216 ID\n  -G, --groups GROUPS   \u65b0\u8d26\u6237\u7684\u9644\u52a0\u7ec4\u5217\u8868\n  -h, --help                    \u663e\u793a\u6b64\u5e2e\u52a9\u4fe1\u606f\u5e76\u63a8\u51fa\n  -k, --skel SKEL_DIR   \u4f7f\u7528\u6b64\u76ee\u5f55\u4f5c\u4e3a\u9aa8\u67b6\u76ee\u5f55\n  -K, --key KEY=VALUE           \u4e0d\u4f7f\u7528 \/etc\/login.defs \u4e2d\u7684\u9ed8\u8ba4\u503c\n  -l, --no-log-init     \u4e0d\u8981\u5c06\u6b64\u7528\u6237\u6dfb\u52a0\u5230\u6700\u8fd1\u767b\u5f55\u548c\u767b\u5f55\u5931\u8d25\u6570\u636e\u5e93\n  -m, --create-home     \u521b\u5efa\u7528\u6237\u7684\u4e3b\u76ee\u5f55\n  -M, --no-create-home          \u4e0d\u521b\u5efa\u7528\u6237\u7684\u4e3b\u76ee\u5f55\n  -N, --no-user-group   \u4e0d\u521b\u5efa\u540c\u540d\u7684\u7ec4\n  -o, --non-unique              \u5141\u8bb8\u4f7f\u7528\u91cd\u590d\u7684 UID \u521b\u5efa\u7528\u6237\n  -p, --password PASSWORD               \u52a0\u5bc6\u540e\u7684\u65b0\u8d26\u6237\u5bc6\u7801\n  -r, --system                  \u521b\u5efa\u4e00\u4e2a\u7cfb\u7edf\u8d26\u6237\n  -R, --root CHROOT_DIR         chroot \u5230\u7684\u76ee\u5f55\n  -s, --shell SHELL             \u65b0\u8d26\u6237\u7684\u767b\u5f55 shell\n  -u, --uid UID                 \u65b0\u8d26\u6237\u7684\u7528\u6237 ID\n  -U, --user-group              \u521b\u5efa\u4e0e\u7528\u6237\u540c\u540d\u7684\u7ec4\n  -Z, --selinux-user SEUSER             \u4e3a SELinux \u7528\u6237\u6620\u5c04\u4f7f\u7528\u6307\u5b9a SEUSER<\/pre>\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n<\/div>\n
\u65b0\u5efa\u4e00\u4e2aUID=501\uff0cGID=600\uff0c30\u5929\u6709\u6548\u671f\uff0c\u5bb6\u76ee\u5f55\u4e3a\/home\/test5\u7684\u7528\u6237test4.<\/p>\n
\u547d\u4ee4 :<\/p>\n
\n
groupadd -g 600  test3                \/\/\u521b\u5efaGID=600\u7684\u7528\u6237\u7ec4test3\nuseradd -u 501 -g 600 -f 30 -m   -d \/home\/test5 test4<\/pre>\n<\/div>\n
\u5f53\u6211\u4eec\u518d\u6b21\u6253\u5f00\u7528\u6237\u6587\u4ef6\/etc\/passwd\u6216\u8005id test4\u4f1a\u770b\u5230\u6211\u4eec\u81ea\u5df1\u7684\u914d\u7f6e\u3002<\/p>\n
uid=501(test4) gid=600(test3) \u7ec4=600(test3)
\n\u7b2c\u4e09\u90e8\u5206 \u66f4\u6539\u7528\u6237\u8bbe\u7f6e<\/strong><\/p>\n
\u4e0d\u540c\u7684 \u7528\u6237\u9700\u8981\u4e0d\u540c\u7684\u6743\u9650\uff0c\u62e5\u6709\u4e0d\u540c\u7684SHELL\uff0c\u662f\u5426\u5141\u8bb8\u767b\u5f55\u3002\u8fd9\u4e2a\u90e8\u5206\uff0c\u5c31\u9700\u8981\u7528\u5230usermod\u547d\u4ee4\u4fee\u6539\u7528\u6237\u914d\u7f6e\u3002\u6211\u4eec\u4e0a\u4e2a\u4f8b\u5b50\u4e2d\u521b\u5efa\u8fc7\u4e00\u4e2atest\u8d26\u6237\uff0c\u9ed8\u8ba4SHELL\u662f\/bin\/bash\uff0c\u662f\u53ef\u4ee5\u767b\u5f55\u7684\u3002<\/p>\n
\u7981\u6b62\u767b\u5f55\uff1a<\/p>\n
\n
usermod -s \/sbin\/nologin test \/\/-s \u6307\u5b9ashell<\/pre>\n<\/div>\n
\u4fee\u6539\u7528\u6237\u540d\uff1a<\/p>\n
 <\/p>\n
\n
 usermod -l test88 test \/\/-l \u65b0\u7684\u7528\u6237\u540d<\/pre>\n<\/div>\n
\u6b64\u5916\u8fd8\u53ef\u4ee5\u5bb6\u76ee\u5f55\u3001\u8fc7\u671f\u5929\u6570\u3001\u66f4\u6362\u7ec4\u3001\u9501\u5b9a\u7528\u6237\u3001\u89e3\u9501\u7528\u6237\u7b49\u529f\u80fd\uff0c\u53ef\u4ee5\u67e5\u770b\u53c2\u6570\u5b9e\u8df5\u3002<\/p>\n
 <\/p>\n
\u7b2c\u56db\u90e8\u5206\u00a0\u5220\u9664\u7528\u6237\/\u7ec4<\/strong><\/p>\n
\u5f53\u6211\u4eec\u521b\u5efa\u7528\u6237\/\u7ec4\u6709\u9519\u8bef\u65f6\uff0c\u53ef\u80fd\u4f1a\u5220\u9664\u7528\u6237\/\u7ec4\uff0c\u7136\u540e\u518d\u91cd\u65b0\u521b\u5efa\u3002\u6211\u4eec\u4f7f\u7528userdel\u547d\u4ee4\u6765\u5220\u9664\u7528\u6237\u3002<\/p>\n
\u6267\u884c\u547d\u4ee4\uff1a<\/p>\n
\n
[root@localhost home]# userdel test\n[root@localhost home]# useradd test\nuseradd\uff1a\u8b66\u544a\uff1a\u6b64\u4e3b\u76ee\u5f55\u5df2\u7ecf\u5b58\u5728\u3002\n\u4e0d\u4ece skel \u76ee\u5f55\u91cc\u5411\u5176\u4e2d\u590d\u5236\u4efb\u4f55\u6587\u4ef6\u3002\n\u6b63\u5728\u521b\u5efa\u4fe1\u7bb1\u6587\u4ef6: \u6587\u4ef6\u5df2\u5b58\u5728<\/pre>\n<\/div>\n
\u51fa\u73b0\u8fd9\u4e2a\u95ee\u9898\u662f\u56e0\u4e3a\u6211\u4eec\u5220\u9664\u7528\u6237\u65f6\uff0c\u7cfb\u7edf\u4e3a\u4e86\u5b89\u5168\u8d77\u89c1\u5e76\u6ca1\u6709\u5220\u9664\u76f8\u5173\u7684\u6587\u4ef6\u4ee5\u53ca\u76ee\u5f55\u3002\u6211\u4eec\u67e5\u770b\u4e00\u4e0buserdel\u53c2\u6570\uff1a
\n<\/strong><\/p>\n
\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n
\u7528\u6cd5\uff1auserdel [\u9009\u9879] \u767b\u5f55\n\n\u9009\u9879\uff1a\n  -f, --force                   force some actions that would fail otherwise\n                                e.g. removal of user still logged in\n                                or files, even if not owned by the user\n  <\/strong>-h, --help                    \u663e\u793a\u6b64\u5e2e\u52a9\u4fe1\u606f\u5e76\u63a8\u51fa\n  -r, --remove                  \u5220\u9664\u4e3b\u76ee\u5f55\u548c\u90ae\u4ef6\u6c60\n  <\/strong>-R, --root CHROOT_DIR         chroot \u5230\u7684\u76ee\u5f55\n  -Z, --selinux-user            \u4e3a\u7528\u6237\u5220\u9664\u6240\u6709\u7684 SELinux \u7528\u6237\u6620\u5c04<\/pre>\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n<\/div>\n
\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u53c2\u6570-rf\u00a0\u6765\u5220\u9664\u76f8\u5173\u6587\u4ef6\u76ee\u5f55\uff0c\u8fd9\u4e00\u6b65\u5177\u6709\u5371\u9669\u6027\uff0c\u662f\u5426\u6709\u56de\u6eda\u64cd\u4f5c\uff0c\u4e0d\u662f\u7279\u522b\u6e05\u695a\u3002<\/p>\n
\u6267\u884c\u547d\u4ee4\uff1a<\/p>\n
\n
[root@localhost home]# userdel -rf test\n[root@localhost home]# useradd test<\/pre>\n<\/div>\n
\u8fd9\u6837\uff0c\u5c31\u4e0d\u4f1a\u51fa\u73b0\u63d0\u793a\u4e86\u3002<\/p>\n
\u7b2c\u4e94\u90e8\u5206 \u7528\u6237\u5b89\u5168\u914d\u7f6e<\/strong><\/p>\n
\u3000\u3000<\/strong>\u5728\u64cd\u4f5c\u7cfb\u7edf\u5b89\u5168\u4e2d\uff0c\u7528\u6237\u6743\u9650\u3001\u6587\u4ef6\u6743\u9650\u4e5f\u662f\u975e\u5e38\u91cd\u8981\u3002\u73b0\u5728\u5c31\u51e0\u4e2a\u5c0f\u70b9\u8bb0\u5f55\u4e00\u4e0b\u3002\u8fd9\u6b21\u76ee\u7684\u4e3b\u8981\u6709\u7981\u6b62root\u7528\u6237\u8fde\u63a5\u3001\u4e00\u822c\u7528\u6237\u4f7f\u7528sudo\u547d\u4ee4\u63d0\u6743\u3002\u6211\u4eec\u5728\u4e0a\u4e2a\u6b65\u9aa4\u4e2d\uff0c\u521b\u5efa\u4e86\u4e00\u4e2atest\u7528\u6237\uff0c\u5f53\u6211\u4eec\u8f93\u5165sudo\u547d\u4ee4\u65f6\uff0c\u4f1a\u63d0\u793a\u5982\u4e0b\uff1a<\/p>\n
 <\/p>\n
\n
test\u4e0d\u5728 sudoers \u6587\u4ef6\u4e2d\u3002\u6b64\u4e8b\u5c06\u88ab\u62a5\u544a\u3002<\/pre>\n<\/div>\n
 <\/p>\n
\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u4eec\u53ea\u9700\u8981\u5728\/etc\/sudoers \u4e2d\u6dfb\u52a0\u7528\u6237test\u5373\u53ef\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
\n
\/\/\u627e\u5230\u5982\u4e0b\u4e00\u884c\uff0c\u5728\u4e0b\u9762\u6dfb\u52a0\u5373\u53ef\n.....\nroot    ALL=(ALL)       ALL\ntest    ALL<\/strong>=(ALL)       ALL          \/\/\u8fd9\u4e00\u884c\u662f\u6dfb\u52a0\u7684<\/strong><\/pre>\n<\/div>\n
\u5230\u8fd9\u91cc\u5e94\u8be5\u5c31\u53ef\u4ee5\u89e3\u51b3\u95ee\u9898\u4e86\u3002<\/p>\n
\u65b0\u589e\uff1a\u5728\u865a\u62df\u673a\u91cc\u9762\u91cd\u65b0\u5b89\u88c5\u4e86\u4e00\u4e2aCentOS 7\uff0c\u5b9e\u9a8c\u4e86\u4e00\u4e0b\uff0c\u786e\u5b9e\u53ef\u4ee5\u6210\u529f\u3002\u4e0b\u9762\u662f\/etc\/sudoers \u5c5e\u6027\uff1a<\/strong><\/p>\n
\"\"<\/strong><\/p>\n
\u53ef\u4ee5\u770b\u5230\u62e5\u6709setUID\u6743\u9650\uff0c\u4efb\u4f55\u7528\u6237\u90fd\u6709x\uff08\u6267\u884c\uff09\u6743\u9650\uff0c\u6545\u53ef\u4ee5\u6267\u884csudo\u547d\u4ee4\u3002\u4e0b\u9762\u7684\u5185\u5bb9\u5c31\u5f53\u4f5c\u662f\u5bf9setUID\u6743\u9650\u7684\u7406\u89e3\u3002<\/strong><\/p>\n
ps.\u56e0\u4e3a\u4e4b\u524d\u6309\u7167\u7f51\u4e0a\u7684\u8d44\u6599\u5bf9\u5176\u4ed6\u90e8\u5206\u8fdb\u884c\u4e86\u8bbe\u7f6e\uff0c\u4f46\u662f\u611f\u89c9\u5e76\u4e0d\u5f71\u54cd\uff0c\u4e0b\u9762\u8d34\u51fa\u4fee\u6539\u7684\u90e8\u5206\u53ca\u5176\u76ee\u7684<\/p>\n
\n
\/\/\u4fee\u6539\u6587\u4ef6 \/usr\/bin\/sudo \u7528\u6237\u53ca\u7528\u6237\u7ec4\nchown  root\uff1aroot \/usr\/bin\/sudo\n\/\/\u4fee\u6539\u6743\u9650\u4e3a4755\uff0c\u5176\u4e2d4\u4ee3\u8868\u4ee5\u6587\u4ef6\u6240\u6709\u8005\u6267\u884c\nchmod 4755 \/usr\/bin\/sudo<\/pre>\n<\/div>\n
\u4e0a\u9762\u7684\u547d\u4ee4\u610f\u601d\u662f\uff0c\u5c06\u6587\u4ef6\/usr\/bin\/sudo\u62e5\u6709\u8005\u6539\u4e3aroot\uff0c\u5f53\u6267\u884c\u65f6\u4ee5root\u8eab\u4efd\u6267\u884c\uff0c\u8fd9\u4e5f\u662f\u20184\u2019\u7684\u542b\u4e49\u3002\u5982\u679c\u8bbe\u7f6e\u6743\u9650\u65f6\uff0c\u52ff\u628a\u201c4755\u201d \u914d\u7f6e\u4e3a755\uff0c\u5c31\u4f1a\u51fa\u73b0\u8fd9\u4e2a\u9519\u8bef\u3002<\/p>\n
\n
sudo\uff1a\u6709\u6548\u7528\u6237 ID \u4e0d\u662f 0\uff0csudo \u5c5e\u4e8e root \u5e76\u8bbe\u7f6e\u4e86 setuid \u4f4d\u5417\uff1f<\/pre>\n<\/div>\n
\u89e3\u51b3\u65b9\u6cd5\u5462\uff0c\u5c31\u662f\u521a\u624d\u8bf4\u7684\u4ee5root\uff08uid=0\uff09\u8eab\u4efd\u8fd0\u884c\u3002<\/p>\n
\u5728\u5b9e\u9645\u73af\u5883\u4e2d\uff0c\u4e3a\u4e86\u9632\u6b62\u9ed1\u5ba2\u5bf9root\u8d26\u6237\u8fdb\u884c\u66b4\u529b\u7834\u89e3\uff0c\u6211\u4eec\u901a\u5e38\u7981\u6b62root\u8d26\u6237SSH\u8fdc\u7a0b\u8fde\u63a5\u3002\u64cd\u4f5c\u5982\u4e0b\uff1a<\/p>\n
\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n
\/\/\u4fee\u6539 \/etc\/ssh\/sshd.config \u6587\u4ef6\uff0c\n\u5c06\n#PermitRootLogin yes\n\u4fee\u6539\u4e3a\nPermitRootLogin no\n\n\/\/\u91cd\u542fsshd\u670d\u52a1\nsystemctl restart sshd.service<\/pre>\n
\"\u590d\u5236\u4ee3\u7801\"<\/a><\/span><\/div>\n<\/div>\n
\u5907\u6ce8\uff1aCentOS 7 \u53d6\u6d88\u4e86service \u7528\u6cd5\uff0c\u5c3d\u7ba1\u90e8\u5206\u60c5\u51b5\u4e0b\u8fd8\u53ef\u4ee5\u4f7f\u7528\uff0c\u4f46\u662f\u6211\u5c31\u5148\u4f7f\u7528systemctl\u5427\u3002<\/p>\n
\u9664\u6b64\u4e4b\u5916\uff0c\u6211\u89c9\u5f97\u6700\u91cd\u8981\u7684\u8fd8\u662f\u4e0d\u540c\u7528\u6237\u95f4\u7684\u6743\u9650\u5206\u914d\u95ee\u9898\u3002\u5148\u6682\u65f6\u7559\u4e0b\u6765\uff0c\u4ee5\u540e\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u6dfb\u52a0\u7b14\u8bb0\u3002<\/p>\n
\u5927\u5bb6\uff0c\u8fd8\u53ef\u4ee5\u6839\u636e\u53c2\u6570\uff0c\u4f9d\u636e\u5b9e\u9645\u60c5\u51b5\u914d\u7f6e\u3002\u5927\u5bb6\u53ef\u4ee5\u76f8\u4e92\u4ea4\u6d41\u3002<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
\u8bf4\u660e\uff1a 1\u3001\u8fd9\u7bc7\u535a\u6587\u8bb0\u5f55\u7684\u662fCentOS 7 \u7528\u6237\u8d26\u6237\u7684\u914d\u7f6e\uff0c\u5305\u62ec\u6dfb\u52a0\u7528\u6237\u3001\u6dfb\u52a0\u7528\u6237\u7ec4\u3001\u5220\u9664\u7528\u6237\u3001\u5220\u9664\u7528\u6237\u7ec4\u7b49\u3002\u5176\u4e2d\u5305\u62ec\u5206\u6790\u7528\u6237\u7684\u914d\u7f6e\u6587\u4ef6\u3001\u76ee\u5f55\u4ee5\u53ca\u5bf9\u5b89\u5168\u7684\u601d\u8003\u3002 2\u3001\u7528\u6237\u914d\u7f6e\u65b9\u9762CentOS 7\u4e0e\u4ee5\u5f80\u7248\u672c\u611f\u89c9\u6ca1\u6709\u5dee\u522b\u3002 \u7b2c\u4e00\u90e8\u5206 \u8ba4\u8bc6\u7528\u6237 Centos 7 \u7cfb\u7edf\u6700\u5c0f\u5316\u5b89\u88c5\uff0c\u9ed8\u8ba4\u914d\u7f6e\uff0c\u662f\u6ca1\u6709\u521b\u5efa\u5176\u4ed6\u7528\u6237\u7684\u3002\u4f5c\u4e3a\u670d\u52a1\u5668\u64cd\u4f5c\u7cfb\u7edf\uff0c\u4e3a\u4e86\u5b89\u5168\u8d77\u89c1\uff0c\u4e00\u822c\u662f\u4f7f\u7528\u4e00\u822c\u7528\u6237\u3002\u8fd9\u5c31\u7275\u6d89\u5230\u7528\u6237\u3001\u7528\u6237\u7ec4\u7684\u521b\u5efa\u4ee5\u53ca\u5220\u9664\u3002 \u6b64\u5916\uff0cCentOS 7 \u548c\u5176\u4ed6\u7248\u672c\u7684Linux\u4e00\u6837\uff0c\u90fd\u5177\u6709\u76f8\u5e94\u7528\u6237\u7684\u914d\u7f6e\u6587\u4ef6\u53ca\u76ee\u5f55\uff0c\u5982\u4e0b\uff1a \/etc\/passwd \u3000\u3000 \/\/\u7528\u6237\u8d26\u6237\u4fe1\u606f\uff0c\u53ef\u4ee5\u770b\u51fa\u7528\u6237\u540d\u79f0 \/etc\/shadow \/\/\u7528\u6237\u8d26\u6237\u52a0\u5bc6\u540e\u4fe1\u606f\uff0c\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\/etc\/passwd\u4e2d\u7684\u4fe1\u606f \/etc\/group […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-349","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/posts\/349","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=349"}],"version-history":[{"count":0,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/posts\/349\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=349"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=349"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=349"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}