Ubuntu 14.04.6无常规系统日志message日志

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Ubuntu 14.04.6无常规系统日志message日志
root@controller:~# cd /var/log/
root@controller:/var/log# ls
alternatives.log  boot.log       chrony        dmesg.0     dmesg.3.gz  faillog    kern.log   syslog                unattended-upgrades
apt               bootstrap.log  dist-upgrade  dmesg.1.gz  dmesg.4.gz  fsck       landscape  ubuntu-advantage.log  upstart
auth.log          btmp           dmesg         dmesg.2.gz  dpkg.log    installer  lastlog    udev                  wtmp

默认没有系统日志，和centos系统还是有些区别。
( `3 U: T4 v+ Y5 V: i# c通过网页搜索，显示ubuntu系统默认不开启系统日志。
" v3 f4 L* ~6 W& c因为在 /etc/rsyslog.d/50-default.conf 文件中，将其注释掉了
, c1 A; `" ~7 F# @% Rcat /etc/rsyslog.d/50-default.conf
. H( w  @2 n8 P6 X" X3 y/ x) v#  Default rules for rsyslog.
! S: O/ S; O& B* c3 G#
0 Y& D& C8 o% `, f! A#   For more information see rsyslog.conf(5) and /etc/rsyslog.conf
2 [# p, @8 p  v/ d' p#
# First some standard log files.  Log by facility.
#
' N0 L8 p# z7 _' n) oauth,authpriv.*   /var/log/auth.log
: L$ s* a6 \' x' n: j*.*;auth,authpriv.none  -/var/log/syslog
" Y1 i9 e7 _, s& z4 r#cron.*    /var/log/cron.log
#daemon.*   -/var/log/daemon.log
kern.*    -/var/log/kern.log
6 j- B' Z! \; p* b  W' Z+ p# U#lpr.*    -/var/log/lpr.log
mail.*    -/var/log/mail.log
#user.*    -/var/log/user.log
#
# Logging for the mail system.  Split it up so that
# it is easy to write scripts to parse these files.
2 C  ?4 n  \' H5 V' T" F#
7 |4 p) |. X$ I#mail.info   -/var/log/mail.info
2 j4 J. T% ?( a- O/ t: V9 Y1 B#mail.warn   -/var/log/mail.warn
1 L9 |" M% R/ q8 F+ r. N& o: Gmail.err   /var/log/mail.err
#
1 @9 k- b! I1 t' ?# Logging for INN news system.
, Y7 g" {3 o) ?& e# m% t& F#
news.crit   /var/log/news/news.crit
news.err   /var/log/news/news.err
: ^% L8 Y+ \8 G) bnews.notice   -/var/log/news/news.notice
#
# Some "catch-all" log files.
0 I3 U3 Q  V4 S5 v! o#
#*.=debug;\
; g, E" A4 F8 n& h% X3 R# auth,authpriv.none;\
# news.none;mail.none -/var/log/debug
#*.=info;*.=notice;*.=warn;\
/ E4 j& x7 F) P2 I( v! [, a# auth,authpriv.none;\
# cron,daemon.none;\
# mail,news.none  -/var/log/messages
#
) T+ ]9 m2 {: t) Z9 t1 k  ^" x; F# Emergencies are sent to everybody logged in.
+ k: a8 A+ m( d# m# X/ B#
- x3 L/ G8 l! M$ k' r*.emerg                                :omusrmsg:*
#
# I like to have messages displayed on the console, but only on a virtual
# console I usually leave idle.
#
- p7 @% {, `. y( Q% z#daemon,mail.*;\
$ r1 O: f$ c, P( H8 \7 }# news.=crit;news.=err;news.=notice;\
0 H! n7 ]: `) |8 ^5 r# *.=debug;*.=info;\
# *.=notice;*.=warn /dev/tty8
# The named pipe /dev/xconsole is for the `xconsole' utility.  To use it,
# you must invoke `xconsole' with the `-file' option:
2 P2 D5 b4 ]4 {$ I+ l0 G4 m#
#    $ xconsole -file /dev/xconsole [...]
#
  K* m4 _  Z+ _# NOTE: adjust the list below, or you'll go crazy if you have a reasonably
/ s. |7 [* p/ r# a. [- g+ T#      busy site..
#
6 r% M' ]: u- j) e) h# D. u0 G6 n  odaemon.*;mail.*;\
news.err;\
' w0 b, q$ q0 N* ^$ [ *.=debug;*.=info;\
*.=notice;*.=warn |/dev/xconsole
: ~* ^6 _- I' ^# k解决办法：
" G' C5 u$ e0 f- C# v所以需修改该配置文件，将注释放开。
root@controller:/var/log# vim /etc/rsyslog.d/50-default.conf
) L; e/ f* l/ \
; Q# y8 D/ P5 K" ~$ S" U# Some "catch-all" log files.
6 u# v/ d: U0 p1 @7 V#
*.=debug;\
0 k1 l4 a3 N3 w( T        auth,authpriv.none;\
        news.none;mail.none     -/var/log/debug
*.=info;*.=notice;*.=warn;\
        auth,authpriv.none;\
# p% n3 o& J5 Q; {: _! _        cron,daemon.none;\
& I8 Y1 W0 ?$ X        mail,news.none          -/var/log/messages
  Y; t5 V5 m6 K/ A
! S$ B% m5 {$ R" T9 n% X- u7 l然后重启rsyslog服务即可：

root@controller:/var/log# service rsyslog restart
rsyslog stop/waiting
& F+ m. K1 r4 q1 Prsyslog start/running, process 74907


再次查看，就有日志了：
root@controller:/var/log# ls
alternatives.log  boot.log       chrony        dmesg.0     dmesg.3.gz  faillog    kern.log   messages              udev                 wtmp
apt               bootstrap.log  dist-upgrade  dmesg.1.gz  dmesg.4.gz  fsck       landscape  syslog                unattended-upgrades
: _4 _6 ~2 H! X6 i6 i- I2 @. p! kauth.log          btmp           dmesg         dmesg.2.gz  dpkg.log    installer  lastlog    ubuntu-advantage.log  upstart
3 v% _( G! ^4 z# aroot@controller:/var/log#
& }6 A9 }- T# Q) ?7 u3 a
3 c  k1 |1 Y% @3 Y- R( A  A
4 z  g; P* C/ c3 p3 `5 R问题解决。
# w* [: A- Q6 P1 Y2 D3 Z