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5.2 sar -b I/O # sar -b 1 3 Linux 2.6.32-504.el6.x86_64 (server.example.com) 2015 01 23 _x86_64(2 CP U) 18 26 15 tps rtps wtps bread/s bwrtn/s 18 26 16 0.00 0.00 0.00 0.00 0.00 18 26 17 0.00 0.00 0.00 0.00 0.00 18 26 18 352.00 142.00 210.00 5648.00 1904.00 : 117.73 47.49 70.23 1888.96 636.79 sar -r # sar -r 1 3 Linux 2.6.32-504.el6.x86_64 (server.example.com) 2015 01 23 _x86_64(2 CP U) 18 26 32 kbmemfree kbmemused %memused kbbuffers kbcached kbcommit %commi t 18 26 33 233684 782688 77.01 81008 152872 1562412 50.72 18 26 34 101404 914968 90.02 81008 152872 1562412 50.72 18 26 35 112552 903820 88.93 81008 152872 1562412 50.72 : 149213 867159 85.32 81008 152872 1562412 50.72 sar sysstat # sar Linux 2.6.32-504.el6.x86_64 (server.example.com) 2015 01 23 _x86_64(2 CP U) 11 10 01 CPU %user %nice %system %iowait %steal %idle 11 20 01 all 0.39 0.00 0.36 0.01 0.00 99.24 11 30 02 all 9.34 0.00 12.22 0.04 0.00 78.39 11 40 01 all 43.10 0.00 56.90 0.00 0.00 0.00 sar -f /var/log/sa/saDD www.lpi.or.jp 160 (C) LPI-Japan
5 # sar -f /var/log/sa/sa22 Linux 2.6.32-504.el6.x86_64 (server.example.com) 2015 01 22 _x86_64(2 CP U) 12 10 02 CPU %user %nice %system %iowait %steal %idle 12 20 01 all 0.33 0.00 0.34 0.01 0.00 99.32 12 30 01 all 0.39 0.00 0.34 0.02 0.00 99.25 : all 0.36 0.00 0.34 0.01 0.00 99.29 /var/log/sa/sarDD 1 less 23 53 sarDD root sarDD # /usr/lib64/sa/sa2 -A # cat /var/log/sa/sar24 Linux 2.6.32-504.el6.x86_64 (server.example.com) 2015-01-23 _x86_64(2 CPU) 11 10 01 CPU %usr %nice %sys %iowait %steal %irq %soft %guest %idle 11 20 01 all 0.39 0.00 0.35 0.01 0.00 0.00 0.01 0.00 99.24 11 20 01 0 0.44 0.00 0.36 0.02 0.00 0.00 0.02 0.00 99.17 5.2.7 logwatch logwatch logwatch # yum install logwatch logwatch logwatch.conf /usr/share/logwatch/default.conf/logwatch.conf /etc/logwatch/conf/logwatch.conf www.lpi.or.jp 161 (C) LPI-Japan
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Linux LPI-Japan 2015-04-16
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7 Linux Linux Linux OS Red
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LPIC Linux Web 1 1 W
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sato • 1 • 2 • 3
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i . . . . . . . . . . . . . . . .
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2.2 network NetworkManager . . . .
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4.1.10 umask . . . . . . . . . . .
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6.3.1 . . . . . . . . . . . . . .
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1.1 fined_r:unconfined_t:s0-s0:c0.
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1.1 # passwd suzuki suzuki : su
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1.2 1.2.1 1 () # id suzuki ui
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1.2 # id suzuki uid=501(suzuki) gi
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1.3 $ ll 0 -rw-rw-r--. 1 suzuki s
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1.3 $ chmod u-x testdir $ ls -l
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1.3 Account expires : never Minimu
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1.3 drwx------. 26 sato sato 4096
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1.4 SSH 1.4.2 SSH CentOS OpenSSH
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1.4 SSH RX packets:19972 errors:0
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1.4 SSH 1.4.8 SSH SSH Linux ssh-
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1.4 SSH ~/.ssh id_rsa.pub id_r
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1.4 SSH authorized_keys SELinux
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1.4 SSH [sshuser@client ~]$ ssh ss
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1.4 SSH 1.1 IP IP SSH OK 2.
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1.4 SSH 1.4 1.4.15 Tera Term T
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1.4 SSH 1.7 From: TeraTerm SSH SC
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1.5 root OpenSSH /etc/ssh/sshd_con
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1.5 root 1.5.3 su su root root
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1.5 root #2) Think before you type
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1.5 root 28608 pts/0 S 0:00 su - h
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2.1 TX packets:45 errors:0 dropped
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2.1 ARP ARP ip neighbor show ar
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2.1 udp 0 0 0.0.0.0:111 0.0.0.0:
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2.1 Transceiver: internal Auto-neg
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2.3 # chkconfig network on # chkco
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2.3 2.3.5 /etc/services /etc/ser
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2.4 iptables NAPT(IP ) IP 1 IP
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2.4 iptables INPUT OUTPUT FORWARD
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2.4 iptables # system-config-firew
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2.5 DHCP 5. system-config-firewa
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2.5 DHCP range 192.168.0.200 192.1
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2.5 DHCP 2.5.8 Windows DHCP Wind
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2.5 DHCP 2.7 TCP/IPv4 4 (TCP/IP
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2.5 DHCP 2.10 IP IP DNS 2.5.9
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3 3.1 OS OS 1. 2. BIOS 3. GRU
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3 timeout=5 splashimage=(hd0,0)/g
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3 ..- 2.6.32-504.el6.x86_64 3
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3 0 1 2 3 4 5 6 0 0 #
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3 3.1.6 runlevel # runlevel N
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3 httpd : [ OK ] httpd # servic
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3 5 rc5.d # ls /etc/rc.d init
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3 3.3 cron Linux cron 3.3.1 c
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3 0-59 0-23 1-31 1-12 0-70
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3 3.3.7 cron crontab -r cron #
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3 # ls /etc/cron.hourly/ 0anacron
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3 #period in days delay in minute
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3 # ntpq -p remote refid st t whe
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3 3.4.6 NTP NTP NTP NTP /etc/
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4.1 # id sato uid=500(sato) gid=50
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4.1 [sato@server ~]$ umask 0002 um
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4.1 /etc/profile # cat /etc/bashr
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4.1 [sato@server ~]$ write suzuki
Page 128 and 129: 4.2 POSIX ACL 4.2.2 ACL ACL getfa
Page 130 and 131: 4.2 POSIX ACL # yum install samba S
Page 132 and 133: 4.2 POSIX ACL 4.2 3. 4.3 sato
Page 134 and 135: 4.2 POSIX ACL Windows samba_acl_te
Page 136 and 137: 4.3 SELinux 4.3 SELinux SELinux Li
Page 138 and 139: 4.3 SELinux /etc/selinux/config SE
Page 140 and 141: 4.3 SELinux 4.3.7 Boolean SELinux
Page 142 and 143: 4.3 SELinux 4.8 Forbidden root /va
Page 144 and 145: 4.4 LVM PV PV 8E Linux /dev/sd
Page 146 and 147: 4.4 LVM lvcreate lvcreate -L -n
Page 148 and 149: 4.4 LVM # df /mnt/LVMtest/ Filesys
Page 150 and 151: 4.5 4.5 4.5.1 CD DVD
Page 152 and 153: 4.5 4.5.5 tar Tape Archiver tar
Page 154 and 155: 4.5 # dd if=/dev/sdb of=/dev/sdc 2
Page 156 and 157: 4.5 -0 0 0 -u /etc/dumpdates
Page 158 and 159: 4.5 efi symvers-2.6.32-504.el6.x86
Page 161 and 162: 5 5.1 Linux Linux Linux 1
Page 163 and 164: 5 enabled 0 yum --enablerepo
Page 165 and 166: 5 ∗ base: ftp.nara.wide.ad.jp
Page 167 and 168: 5 5.1.5 yum Locale LANG yum gro
Page 169 and 170: 5 # ln -s /media/CentOS_6.6_Final
Page 171 and 172: 5 PID USER PR NI VIRT RES SHR S %
Page 173 and 174: 5 5.2.3 vmstat vmstat CPU vmst
Page 175 and 176: 5 # iostat Linux 2.6.32-504.el6.x
Page 177: 5 dm-0 0.00 0.00 1.17 5.33 41.92
Page 181 and 182: 5 Detail Low0Med5High10 Service
Page 183 and 184: 5 # logwatch --print ############
Page 185 and 186: 6 6.1 OS 6.1.1 CentOS /var/
Page 187 and 188: 6 syslogd 6.1.5 syslog facil
Page 189 and 190: 6 6.1.7 - Y * @ IP UDP
Page 191 and 192: 6 -A INPUT -j REJECT --reject-wit
Page 193 and 194: 6 $ModLoad TCP $InputTCPServerRu
Page 195 and 196: 6 syslogrsyslog ```shell-session
Page 197 and 198: 6 extension .baksome.log some.
Page 199 and 200: 6 prerotate firstaction postrot
Page 201 and 202: 6 • netstat • tcpdump • Wir
Page 203 and 204: 6 6.2.4 tcpdump GUI Wiresh
Page 205 and 206: 6 Wireshark Network Analyzer # wi
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Page 211 and 212: 6 6.8 4. /mnt/sysimage Read-On
Page 213 and 214: 6 6.11 shell 7. bash /mnt/sysim
Page 215 and 216: 7 CentOS 7 7.1 CentOS 7 CentOS
Page 217 and 218: 7 CentOS 7 systemctl status sys
Page 219 and 220: 7 CentOS 7 7.2.4 systemctl list-
Page 221 and 222: 7 CentOS 7 7.2.8 systemctl enabl
Page 223 and 224: 7 CentOS 7 2. /etc/systemd/system
Page 225 and 226: 7 CentOS 7 1 28 17:29:04 centos7.
Page 227 and 228: 7 CentOS 7 sources: services: dhc
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7 CentOS 7 7.1 GUI NetworkManag
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Linux 2015 4 16 v1.0.0 LPI-Ja
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