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tutorials:vps_debian [2012/01/28 20:39] – memnon | tutorials:vps_debian [2012/01/28 20:44] – Bring in improvements from sdf memnon | ||
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* [[#Package Management]] | * [[#Package Management]] | ||
* [[#Firewall Setup]] | * [[#Firewall Setup]] | ||
+ | * [[#Software and Distribution Updating]] | ||
+ | * [[#Reducing Memory Usage]] | ||
===== Basics ===== | ===== Basics ===== | ||
Line 138: | Line 140: | ||
# chmod 755 / | # chmod 755 / | ||
+ | | ||
+ | ===== Software and Distribution Updating ===== | ||
+ | |||
+ | To update your system, run the following commands: | ||
+ | apt-get update | ||
+ | apt-get dist-upgrade -y | ||
+ | | ||
+ | ===== Reducing Memory Usage===== | ||
+ | |||
+ | If you are using a 128MB slice, it's a good idea to reduce the memory usage of some processes or even disable them. | ||
+ | |||
+ | === cron and at === | ||
+ | You might not need one or both of those, so you can deactivate them with | ||
+ | |||
+ | # update-rc.d -f atd remove | ||
+ | # update-rc.d -f cron remove | ||
+ | |||
+ | This frees up ca. 7MB (if both are deactivated). | ||
+ | |||
+ | === getty / virtual terminals === | ||
+ | This being a virtual system, you won't need getty on tty1-6. In order to eliminate them, edit / | ||
+ | |||
+ | co: | ||
+ | |||
+ | # | ||
+ | # | ||
+ | # | ||
+ | # | ||
+ | # | ||
+ | # | ||
+ | |||
+ | You need to keep the line with hvc0 so you can attach a serial console from vps.sdf.org to your vps. This frees up ca. 10MB. | ||
+ | |||
+ | === rsyslogd === | ||
+ | rsyslogd eats a lot of memory by default (26MB on my vps) which can be reduced by the usage of ulimit. Edit / | ||
+ | |||
+ | ulimit -s 256 | ||
+ | |||
+ | Example: | ||
+ | |||
+ | < | ||
+ | case " | ||
+ | start) | ||
+ | ulimit -s 256 | ||
+ | log_daemon_msg " | ||
+ | create_xconsole | ||
+ | do_start | ||
+ | case " | ||
+ | 0) sendsigs_omit | ||
+ | | ||
+ | 1) log_progress_msg " | ||
+ | | ||
+ | *) log_end_msg 1 ;; | ||
+ | esac | ||
+ | |||
+ | ;; | ||
+ | </ | ||
+ | This frees up about 23MB. |