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University of PisaComputer Science Department
System Administration
MonitoringStefano Bistarelli
University of PisaComputer Science Departmentbista@di.unipi.ithttp://www.di.unipi.it/~bista/
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
Outline
lun mar mer gio ven sab dom
1 2 3 4 5 6 7
8 9 10 11 lab 12 lab 13 14
15 lab 16 17 18 lab 19 lab 20 21
22 lab 23selfstudy 24 25lab 26 lab 27 28
29 lab 30 selfstudy 31
2001
Gennaio
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
Outline
lun mar mer gio ven sab dom
1 2 lab 3 4
5 lab 6 7 Ripasso in
aula / Selfstudy 8 lab 9l ab 10 11
12 Exam 13 Exam 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28
2001
Febbraio
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
Prima Settimana
9Introduzione
W2K•Installazione win2K (anche studenti)•Backup
Riferimenti:-Lucidi-Cap 1,2,15 libro
10W2K•registri•Active Directory•Gestione computer
Linux-Installazione Linux
Riferimenti:-Lucidi-Cap 4,5 libro-RH inst.guide
11 lab
-Linux utente1
12 lab
-Linux utente2
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
Seconda settimana
15 lab 16W2K•Booting and ShutdownDisco ripristino
Linux•Booting and Shutdown•Inst. Linux (studenti)
Riferimenti:-Lucidi- fotocopie
17W2K•Utenti
Linux•Backup•multi boot•Utenti•superuser
Riferimenti:-Libro Cap. 7-Lucidi- fotocopie
18 lab 19 lab
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
terza settimana
22 lab 23 24W2K•Device•Disk•fs
Linux•Device•Disk•fs
Riferimenti:-Libro Cap. 8-Lucidi- fotocopie
25 lab 26 lab
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
quarta settimana
29 lab 30 31W2K•processi•Task periodici•stampa
Linux•processi•Task periodici•stampa
Riferimenti:-Libro Cap. -Lucidi- fotocopie
1W2K•processi•Task periodici•stampa
Linux•processi•Task periodici•stampa
Riferimenti:-Libro Cap. -Lucidi- fotocopie
2 lab
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
quinta settimana
5 lab 6W2K•monitoring
Linux•monitoring
Riferimenti:-Libro Cap. -Lucidi- fotocopie
7W2K
Linux
Ripasso guidato dagli studenti
8 lab 9 lab
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
Monitoring-Linux
In tutti gli Unix: Iostat: disk,terminal,cpu Vmstat: virtual memory Pstat: intero sistema Netstat: ethernet
Difficile interpretazione! No regole fisse! Solo esperienza!
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
vmstat
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
0 0 0 1920 2984 7996 57372 0 0 1 1 122 99 1 0 98
Procs r: The number of processes waiting for run time. b: The number of processes in uninterruptable sleep. w: The number of processes swapped out but otherwise
runnable. This field is calculated, but Linux never desperation swaps.
Memory swpd: the amount of virtual memory used (kB). free: the amount of idle memory (kB). buff: the amount of memory used as buffers (kB).
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
0 0 0 1920 2984 7996 57372 0 0 1 1 122 99 1 0 98
Swap si: Amount of memory swapped in from disk
(kB/s). so: Amount of memory swapped to disk (kB/s).
IO bi: Blocks sent to a block device (blocks/s). bo: Blocks received from a block device (blocks/s).
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
0 0 0 1920 2984 7996 57372 0 0 1 1 122 99 1 0 98
System in: The number of interrupts per second,
including the clock. cs: The number of context switches per
second. CPU
These are percentages of total CPU time. us: user time sy: system time id: idle time
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
vari
Uptime Df, du Who ps
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
procinfo
Memory: Total Used Free Shared Buffers CachedMem: 127812 89812 38000 14332 8204 59484Swap: 530104 1920 528184
Bootup: Sun Feb 4 18:33:48 2001 Load average: 0.00 0.00 0.00 2/53 3104
user : 0:24:45.13 1.4% page in : 107158 disk 1: 33557r 47293w
nice : 0:00:00.00 0.0% page out: 69284system: 0:04:41.29 0.3% swap in : 1063idle : 1d 4:43:27.87 98.3% swap out: 1810uptime: 1d 5:12:54.27 context : 10379950
irq 0: 10517429 timer irq 6: 3irq 1: 64888 keyboard irq 8: 1 rtcirq 2: 0 cascade [4] irq 10: 2242 es1371irq 3: 3 irq 12: 331807 PS/2 Mouseirq 4: 3 irq 13: 1 fpu
irq 5: 472789 eth0 irq 14: 1407307 ide0
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
Procinfo -m
Kernel Command Line: auto BOOT_IMAGE=linux ro root=301
Modules: 28 *nfs 140 *nfsd 30 *lockd 52 *sunrpc 19 *3c59x 28 es1371 3 *soundcore
Character Devices: Block Devices: 1 mem 14 sound 1 ramdisk 2 pty 29 fb 2 fd 3 ttyp 36 netlink 3 ide0 4 ttyS 128 ptm 9 md 5 cua 136 pts 7 vcs 162 raw 10 misc
File Systems:ext2 [proc] iso9660 [devpts][nfs]
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
top
uptime This line displays the time the system has been up, and the
three load averages for the system. The load averages are the average number of process ready to run during the last 1, 5 and 15 minutes. This line is just like the output of uptime(1). The uptime display may be toggled by the interactive l command.
processes The total number of processes running at the time of the last update. This is also broken down into the number of tasks which are running, sleeping, stopped, or undead. The processes and states display may be toggled by the t interactive command.
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
Top/gtop
11:53pm up 1 day, 5:19, 1 user, load average: 0.00, 0.00, 0.00
53 processes: 52 sleeping, 1 running, 0 zombie, 0 stopped
CPU states: 0.3% user, 0.1% system, 0.0% nice, 99.4% idle
Mem: 127812K av, 90028K used, 37784K free, 14632K shrd, 8216K buff
Swap: 530104K av, 1920K used, 528184K free 59536K cached
PID USER PRI NI SIZE RSS SHARE STAT LIB %CPU %MEM TIME COMMAND
3134 bista 18 0 964 964 748 R 0 0.5 0.7 0:00 top
1 root 0 0 120 68 48 S 0 0.0 0.0 0:04 init
2 root 0 0 0 0 0 SW 0 0.0 0.0 0:01 kflushd
3 root 0 0 0 0 0 SW 0 0.0 0.0 0:09 kupdate
4 root 0 0 0 0 0 SW 0 0.0 0.0 0:00 kpiod
5 root 0 0 0 0 0 SW 0 0.0 0.0 0:00 kswapd
6 root -20 -20 0 0 0 SW< 0 0.0 0.0 0:00 mdrecoveryd
333 bin 0 0 248 220 156 S 0 0.0 0.1 0:00 portmap
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
Top/gtop
Man top
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
win2k
Performance monitor
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
win2k
Registro eventi
dr. Stefano Bistarelli: System AdministrationUniversity of PisaComputer Science Department
Linux - rpm
Gnome rpm krpm
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