「Logrotate」の版間の差分
提供: Wikinote
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== 動作 == | == 動作 == | ||
| + | |||
| + | === compress === | ||
| + | |||
| + | rotate 4 | ||
| + | compress | ||
| + | |||
| + | # 古いログから順に rename | ||
| + | # log.1 と log.1.gz を open し、gzip 経由で log.1.gz へ write | ||
| + | # log.1 を unlink | ||
| + | |||
| + | 13534 rename("/tmp/test.log.4.gz", "/tmp/test.log.5.gz") = -1 ENOENT (No such file or directory) | ||
| + | 13534 rename("/tmp/test.log.3.gz", "/tmp/test.log.4.gz") = -1 ENOENT (No such file or directory) | ||
| + | 13534 rename("/tmp/test.log.2.gz", "/tmp/test.log.3.gz") = -1 ENOENT (No such file or directory) | ||
| + | 13534 rename("/tmp/test.log.1.gz", "/tmp/test.log.2.gz") = 0 | ||
| + | 13534 rename("/tmp/test.log.0.gz", "/tmp/test.log.1.gz") = -1 ENOENT (No such file or directory) | ||
| + | 13534 access("/tmp/test.log.5.gz", F_OK) = -1 ENOENT (No such file or directory) | ||
| + | 13534 rename("/tmp/test.log", "/tmp/test.log.1") = 0 | ||
| + | 13534 open("/tmp/test.log.1", O_RDONLY|O_LARGEFILE) = 3 | ||
| + | 13534 open("/tmp/test.log.1.gz", O_RDWR|O_CREAT|O_TRUNC|O_LARGEFILE, 0100644) = 4 | ||
| + | 13534 fchmod(4, 0600) = 0 | ||
| + | 13534 fchown32(4, 500, 500) = 0 | ||
| + | 13534 fchmod(4, 0100644) = 0 | ||
| + | 13534 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xb7fa7718) = 13535 | ||
| + | ... | ||
| + | 13535 execve("/bin/gzip", ["/bin/gzip"], [/* 31 vars */]) = 0 | ||
| + | ... | ||
| + | 13535 read(0, "2011\345\271\264 6\346\234\210 24\346\227\245 \351\207\221\346\233\234\346\227\245 00"..., 65536) = 258 | ||
| + | 13535 read(0, "", 65278) = 0 | ||
| + | 13535 write(1, "\37\213\10\0fb\3N\0\0033204|\272s\213\202\202\331\2639\35\nF&\317\246/Ux"..., 82) = 82 | ||
| + | ... | ||
| + | 13534 --- SIGCHLD (Child exited) @ 0 (0) --- | ||
| + | 13534 unlink("/tmp/test.log.1") = 0 | ||
| + | |||
=== copytruncate === | === copytruncate === | ||
| − | |||
rotate 4 | rotate 4 | ||
copytruncate | copytruncate | ||
| − | + | # 古いログから順に rename | |
| − | open | + | # log と log.1 を open し、log から読んで log.1 へ write |
| + | # log を ftruncate | ||
rename("/root/stap/test.log.4", "/root/stap/test.log.5") = -1 ENOENT (No such file or directory) | rename("/root/stap/test.log.4", "/root/stap/test.log.5") = -1 ENOENT (No such file or directory) | ||
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=== nocopytruncate === | === nocopytruncate === | ||
| − | + | ||
| + | rotate 4 | ||
| + | nocopytruncate | ||
| + | |||
| + | デフォルトの動作。単に古いログから順に rename するだけ。 | ||
| + | |||
rename("/root/stap/test.log.4", "/root/stap/test.log.5") = -1 ENOENT (No such file or directory) | rename("/root/stap/test.log.4", "/root/stap/test.log.5") = -1 ENOENT (No such file or directory) | ||
rename("/root/stap/test.log.3", "/root/stap/test.log.4") = -1 ENOENT (No such file or directory) | rename("/root/stap/test.log.3", "/root/stap/test.log.4") = -1 ENOENT (No such file or directory) | ||
2011年6月24日 (金) 01:07時点における版
設定
デフォルト
logrotate-3.7.4-8 (CentOS 5.2) の /etc/logrotate.conf の内容は以下。
weekly rotate 4 create #compress include /etc/logrotate.d
動作
compress
rotate 4 compress
- 古いログから順に rename
- log.1 と log.1.gz を open し、gzip 経由で log.1.gz へ write
- log.1 を unlink
13534 rename("/tmp/test.log.4.gz", "/tmp/test.log.5.gz") = -1 ENOENT (No such file or directory)
13534 rename("/tmp/test.log.3.gz", "/tmp/test.log.4.gz") = -1 ENOENT (No such file or directory)
13534 rename("/tmp/test.log.2.gz", "/tmp/test.log.3.gz") = -1 ENOENT (No such file or directory)
13534 rename("/tmp/test.log.1.gz", "/tmp/test.log.2.gz") = 0
13534 rename("/tmp/test.log.0.gz", "/tmp/test.log.1.gz") = -1 ENOENT (No such file or directory)
13534 access("/tmp/test.log.5.gz", F_OK) = -1 ENOENT (No such file or directory)
13534 rename("/tmp/test.log", "/tmp/test.log.1") = 0
13534 open("/tmp/test.log.1", O_RDONLY|O_LARGEFILE) = 3
13534 open("/tmp/test.log.1.gz", O_RDWR|O_CREAT|O_TRUNC|O_LARGEFILE, 0100644) = 4
13534 fchmod(4, 0600) = 0
13534 fchown32(4, 500, 500) = 0
13534 fchmod(4, 0100644) = 0
13534 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xb7fa7718) = 13535
...
13535 execve("/bin/gzip", ["/bin/gzip"], [/* 31 vars */]) = 0
...
13535 read(0, "2011\345\271\264 6\346\234\210 24\346\227\245 \351\207\221\346\233\234\346\227\245 00"..., 65536) = 258
13535 read(0, "", 65278) = 0
13535 write(1, "\37\213\10\0fb\3N\0\0033204|\272s\213\202\202\331\2639\35\nF&\317\246/Ux"..., 82) = 82
...
13534 --- SIGCHLD (Child exited) @ 0 (0) ---
13534 unlink("/tmp/test.log.1") = 0
copytruncate
rotate 4 copytruncate
- 古いログから順に rename
- log と log.1 を open し、log から読んで log.1 へ write
- log を ftruncate
rename("/root/stap/test.log.4", "/root/stap/test.log.5") = -1 ENOENT (No such file or directory)
rename("/root/stap/test.log.3", "/root/stap/test.log.4") = -1 ENOENT (No such file or directory)
rename("/root/stap/test.log.2", "/root/stap/test.log.3") = -1 ENOENT (No such file or directory)
rename("/root/stap/test.log.1", "/root/stap/test.log.2") = 0
rename("/root/stap/test.log.0", "/root/stap/test.log.1") = -1 ENOENT (No such file or directory)
access("/root/stap/test.log.5", F_OK) = -1 ENOENT (No such file or directory)
open("/root/stap/test.log", O_RDWR|O_LARGEFILE) = 3
open("/root/stap/test.log.1", O_WRONLY|O_CREAT|O_TRUNC|O_LARGEFILE, 0100644) = 4
fchmod(4, 0600) = 0
fchown32(4, 0, 0) = 0
fchmod(4, 0100644) = 0
read(3, "1308784634\n1308784635\n1308784636"..., 8192) = 319
write(4, "1308784634\n1308784635\n1308784636"..., 319) = 319
read(3, "", 8192) = 0
ftruncate64(3, 0) = 0
close(3) = 0
close(4) = 0
nocopytruncate
rotate 4 nocopytruncate
デフォルトの動作。単に古いログから順に rename するだけ。
rename("/root/stap/test.log.4", "/root/stap/test.log.5") = -1 ENOENT (No such file or directory)
rename("/root/stap/test.log.3", "/root/stap/test.log.4") = -1 ENOENT (No such file or directory)
rename("/root/stap/test.log.2", "/root/stap/test.log.3") = 0
rename("/root/stap/test.log.1", "/root/stap/test.log.2") = 0
rename("/root/stap/test.log.0", "/root/stap/test.log.1") = -1 ENOENT (No such file or directory)
access("/root/stap/test.log.5", F_OK) = -1 ENOENT (No such file or directory)
rename("/root/stap/test.log", "/root/stap/test.log.1") = 0
