Quickly optimize your new LEB

netomx · June 2012

Will remove some unused services:

apt-get update
apt-get -y upgrade
apt-get -y install nano localepurge dropbear
service saslauthd stop
service sendmail stop
service bind stop
service apache2 stop
service xinetd stop
service samba stop
service bind9 stop
update-rc.d saslauthd remove
update-rc.d sendmail remove
update-rc.d bind remove
update-rc.d apache2 remove
update-rc.d xinetd remove
update-rc.d samba remove
update-rc.d bind9 remove
update-rc.d sshd remove
service sshd stop
update-rc.d ssh remove
service ssh stop

Edit: nano /etc/default/dropbear

change NO_START=0 to 1

service dropbear start

REBOOT:


free -m
             total       used       free     shared    buffers     cached
Mem:            32         28          3          0          0         26
-/+ buffers/cache:          2         29
Swap:           32          0         31

You're welcome.

HalfEatenPie · June 2012

haha, the 32mb VPS challenge.

netomx · June 2012

And if you remove the cron, maybe you can get something better... and syslog, I dont know if you need syslog on these machines.

breton · June 2012

rm / -rf --no-preserve-root

Optimizy!

prometeus · June 2012

@netomx I still remember when you forced me to manually install centos on my debian test machine 4-5 months ago and now you are all peace and love with debian :-)

And give suggestion on how to run it in 32M! You're a man now!

:P

gsrdgrdghd · June 2012

@breton said: Optimizy!

Thats only file system optimazation though. You can also optimize the CPU with

:(){ :|:& };:

ErawanArifNugroho · June 2012

If we use Debian 6 32 bit :

# free -m
             total       used       free     shared    buffers     cached
Mem:            32         11         20          0          0          7
-/+ buffers/cache:          4         27
Swap:           32          0         32

VPSCheap_net · June 2012

@gsrdgrdghd thats just evil..

netomx · June 2012

I used Debian 6 32bit. @prometeus i know :( hahaha

KuJoe · June 2012

@netomx said: and syslog, I dont know if you need syslog on these machines.

apt-get install syslog-ng, much less RAM than normal syslog.

djvdorp · June 2012

@gsrdgrdghd said: Thats only file system optimazation though. You can also optimize the CPU with

:(){ :|:& };:

Someone willing to explain this one to me?

Amitz · June 2012

@gsrdgrdghd: Since when are fork bombs considered as optimization? ;) @djvdorp: It's a 'fork bomb'... http://en.wikipedia.org/wiki/Forkbomb

ErawanArifNugroho · June 2012

apt-get install -y syslog-ng && dpkg --purge rsyslog

gsrdgrdghd · June 2012

@Amitz said: @gsrdgrdghd: Since when are fork bombs considered as optimization? ;)

Since @breton 's code removed root (i suppose) :P

Amitz · June 2012

@gsrdgrdghd: Valid point! ;-)

fly · June 2012

great a 2mb system that does nothing weeeeee

netomx · June 2012

@eranwanArifNugroho

[email protected]:~# free -m
             total       used       free     shared    buffers     cached
Mem:            32          9         22          0          0          6
-/+ buffers/cache:          3         28
Swap:           32          0         32
[email protected]:~# ps ax
  PID TTY      STAT   TIME COMMAND
    1 ?        Ss     0:00 init [2]
    2 ?        S      0:00 [kthreadd/719]
    3 ?        S      0:00 [khelper/719]
  432 ?        S      0:00 supervising syslog-ng
  433 ?        Ss     0:00 /usr/sbin/syslog-ng -p /var/run/syslog-ng.pid
  465 ?        Ss     0:00 /usr/sbin/dropbear -d /etc/dropbear/dropbear_dss_host
  480 ?        Ss     0:00 /usr/sbin/cron
  502 ?        Rs     0:00 /usr/sbin/dropbear -d /etc/dropbear/dropbear_dss_host
  503 pts/0    Ss     0:00 -bash

I was using 2mb with the last syslog :(

@kbar said: great a 2mb system that does nothing weeeeee

Well, that is just to lower the RAM - you can try not to use rsync, apache2, whatever :)

yomero · June 2012

https://github.com/maxexcloo/Minimal

netomx · June 2012

@yomero said: https://github.com/maxexcloo/Minimal

I hate you :(

ErawanArifNugroho · June 2012

Will the Minimal works with OpenVZ without error?

netomx · June 2012

Yeap

[email protected]:~# ps ax
  PID TTY      STAT   TIME COMMAND
    1 ?        Ss     0:00 init [2]
    2 ?        S      0:00 [kthreadd/719]
    3 ?        S      0:00 [khelper/719]
  329 ?        S      0:00 /usr/sbin/syslogd --no-forward
  349 ?        Ss     0:00 /usr/sbin/dropbear -d /etc/dropbear/dropbear_dss_host
  353 ?        Ss     0:00 /usr/sbin/cron
  382 ?        Ss     0:00 /usr/sbin/dropbear -d /etc/dropbear/dropbear_dss_host
  383 pts/0    Ss     0:00 -bash
  389 pts/0    R+     0:00 ps ax
[email protected]:~# free -m
             total       used       free     shared    buffers     cached
Mem:            32          6         25          0          0          3
-/+ buffers/cache:          2         29
Swap:           32          0         32
[email protected]:~# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/simfs            2.0G  151M  1.9G   8% /
tmpfs                  16M     0   16M   0% /lib/init/rw
tmpfs                  16M     0   16M   0% /dev/shm

It is like my work, BUT, look the disk space =0 !

I should install localepurge then, to preserve space with new packages ;)

NanoG6 · June 2012

@yomero said: https://github.com/maxexcloo/Minimal

4 hours late

birdie25 · June 2012

CentOS please.

ErawanArifNugroho · June 2012

~# top
top - 03:55:52 up  4:02,  1 user,  load average: 0.06, 0.03, 0.00
Tasks:  14 total,   1 running,  13 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:     32768k total,    19140k used,    13628k free,        0k buffers
Swap:    32768k total,      740k used,    32028k free,     9240k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
  588 root      20   0  7144 4936 1276 S    0 15.1   0:00.44 munin-node
21440 root      20   0  8544 3008 2456 S    0  9.2   0:00.07 sshd
  493 root      20   0  4820 2036 1524 S    0  6.2   0:07.66 openvpn
21443 root      20   0  2972 1616 1284 S    0  4.9   0:00.00 bash
  489 root      20   0  5016 1104  748 S    0  3.4   0:00.21 openvpn
21447 root      20   0  2328 1084  892 R    0  3.3   0:00.00 top
  436 root      20   0  5624  996  824 S    0  3.0   0:00.30 syslog-ng
20257 root      20   0  5488  956  568 S    0  2.9   0:00.00 sshd
21442 root      20   0  2816  796  660 S    0  2.4   0:00.00 sftp-server
  477 root      20   0  2288  300  204 S    0  0.9   0:00.03 cron
    1 root      20   0  2028  284  228 S    0  0.9   0:00.10 init
  435 root      20   0  5368   44   40 S    0  0.1   0:00.00 syslog-ng
    2 root      20   0     0    0    0 S    0  0.0   0:00.00 kthreadd/712
    3 root      20   0     0    0    0 S    0  0.0   0:00.00 khelper/712

~# free -m
             total       used       free     shared    buffers     cached
Mem:            32         18         13          0          0          9
-/+ buffers/cache:          9         22
Swap:           32          0         31

~# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/simfs            2.0G  562M  1.5G  28% /
tmpfs                  16M     0   16M   0% /lib/init/rw
tmpfs                  16M     0   16M   0% /dev/shm

yomero · June 2012

Yiak centos u_u

vanarp · June 2012

Thank you LET! Today I learned about forkbomb :)

huluwa · June 2012

marked && testing

Shamli · June 2012

@vanarp said: Thank you LET! Today I learned about forkbomb :)

+1

djvdorp · June 2012

@birdie25 said: CentOS please.

netomx · June 2012

that conversion to svg failed

dmmcintyre3 · June 2012

@djvdorp why?

netomx · June 2012

@dmmcintyre3 said: why?

at my point of view, it is easier to upgrade on debian... I managed CentOS 5 several years ago and never feel so good of it...

djvdorp · June 2012

I prefer debian myself. But i was pretty much trolling with memes as buyvm guys arent here ;)

huluwa · June 2012

32M box from IPXCore

[email protected]:~# ps aux USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 1 0.0 2.2 2028 724 ? Ss 03:29 0:00 init [2] root 2 0.0 0.0 0 0 ? S 03:29 0:00 [kthreadd/776] root 3 0.0 0.0 0 0 ? S 03:29 0:00 [khelper/776] root 393 0.0 1.8 5368 612 ? S 03:29 0:00 supervising sys root 394 0.0 6.9 5624 2268 ? Ss 03:29 0:00 /usr/sbin/syslo root 421 0.0 1.5 2084 500 ? Ss 03:29 0:00 /usr/sbin/dropb root 432 0.0 2.4 2288 788 ? Ss 03:29 0:00 /usr/sbin/cron root 452 0.2 3.3 2400 1088 ? Ss 03:29 0:00 /usr/sbin/dropb root 453 0.0 2.4 1924 800 ? S 03:29 0:00 /usr/lib/sftp-s root 454 0.3 3.4 2400 1124 ? Ss 03:30 0:00 /usr/sbin/dropb root 455 0.0 4.9 2960 1608 pts/0 Ss 03:30 0:00 -bash root 463 0.0 2.8 2348 924 pts/0 R+ 03:31 0:00 ps aux

[email protected]:~# free -m total used free shared buffers cached Mem: 32 9 22 0 0 6 -/+ buffers/cache: 3 28 Swap: 32 0 32

[email protected]:~# df -h Filesystem Size Used Avail Use% Mounted on /dev/simfs 2.0G 312M 1.7G 16% / tmpfs 16M 0 16M 0% /lib/init/rw tmpfs 16M 0 16M 0% /dev/shm

jcaleb · June 2012

@huluwa how were you able to drop disk usage to 312mb? mine is 480mb after installing debian 6.

eastonch · June 2012

@jcaleb said: @huluwa how were you able to drop disk usage to 312mb? mine is 480mb after installing debian 6.

I also have the same question... Maybe, logs, or removal of some bulk?

huluwa · June 2012

@jcaleb said: @huluwa how were you able to drop disk usage to 312mb? mine is 480mb after installing debian 6.

I removed many others:

apt-get -y purge apache2-* bind9-* xinetd samba-* nscd-* portmap sendmail-* sasl2-bin apt-get -y purge lynx memtester unixodbc python-* odbcinst-* sudo tcpdump ttf-*

yomero · June 2012

@jcaleb said: @huluwa how were you able to drop disk usage to 312mb? mine is 480mb after installing debian 6.

Read the full thread

@yomero said: https://github.com/maxexcloo/Minimal

eastonch · June 2012

@jcaleb

EDIT: Used the minimal.sh script from Maxexcloo... https://github.com/maxexcloo/Minimal

[email protected]:~/maxexcloo-Minimal-9af6cc7# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/simfs            2.0G  155M  1.9G   8% /
tmpfs                  16M     0   16M   0% /lib/init/rw
tmpfs                  16M     0   16M   0% /dev/shm

huluwa · June 2012

@yomero said: https://github.com/maxexcloo/Minimal

Filesystem Size Used Avail Use% Mounted on /dev/simfs 2.0G 183M 1.9G 9% / tmpfs 16M 0 16M 0% /lib/init/rw tmpfs 16M 0 16M 0% /dev/shm

So d**m small!

jcaleb · June 2012

thanks! thats a big help!

BluBoy · June 2012

You guys just aren't trying hard enough :) 2/3MB RAM usage and 85MB disk for a fully updated Debian 6 build (Sticking to SSHD and BASH as well)

https://www.thriftydevil.com.au/technology/minimizing-debian-for-openvz

yomero · June 2012

@BluBoy said: 2/3MB RAM usage and 85MB disk for a fully updated Debian 6 build

Yes, but you don't mention how to achieve it...

jcaleb · June 2012

no consolidated script =(

yomero · June 2012

@jcaleb said: no consolidated script =(

Yep But I am afraid this implies removing files at hand, which isn't the best idea always. Sounds cool, but...

jcaleb · June 2012

i can live with 180mb from maxexcloo, with script i understand.

debug · June 2012

@BluBoy said: You guys just aren't trying hard enough :) 2/3MB RAM usage and 85MB disk for a fully updated Debian 6 build (Sticking to SSHD and BASH as well)

https://www.thriftydevil.com.au/technology/minimizing-debian-for-openvz

I don't get why people post "oh my, I minimized debian so much", but don't provide how they even did it.

BluBoy · June 2012

It just involved removing some of the locales and a few parts of the docs (the same copyright message repeated 100 times!) etc. I'll write something in more detailed later, but rather than running the scripts blindly, you guys should be looking at what each command does anyway... That way you can combine all of the guides online.

Oliver · June 2012

I got powerdns and MySQL backend running on my 32MB IPXcore VPS. Works fine. :-)

Running CentOS btw.

maxexcloo · June 2012

Hooray people like my script :) Just FYI, Minimal is depreciated, I'd recommend Minstall instead (will have automated install soon)!

vanarp · June 2012

@maxexcloo said: Hooray people like my script :)

Can you add support for Ubuntu ?

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