commit 5ff378c921d516390d2e52ae821a3a98a1347c0a Author: Luc Didry Date: Fri Apr 22 10:27:06 2016 +0200 Initial commit - working diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..d7f1051 --- /dev/null +++ b/LICENSE @@ -0,0 +1,339 @@ +GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Lesser General Public License instead.) You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +this service if you wish), that you receive source code or can get it +if you want it, that you can change the software or use pieces of it +in new free programs; and that you know you can do these things. + + To protect your rights, we need to make restrictions that forbid +anyone to deny you these rights or to ask you to surrender the rights. +These restrictions translate to certain responsibilities for you if you +distribute copies of the software, or if you modify it. + + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must give the recipients all the rights that +you have. 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You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program. + +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a fee. + + 2. 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IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + {description} + Copyright (C) {year} {fullname} + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + {signature of Ty Coon}, 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. diff --git a/README b/README new file mode 100644 index 0000000..cb6296f --- /dev/null +++ b/README @@ -0,0 +1,73 @@ +# Dynamic motd + +The aim of this project is to give some informations when you log into a server through SSH. + +Example: + +``` + + ___ ___ _ ____ _____ _ __ + / __|/ _ \ '__\ \ / / _ \ '__| + \__ \ __/ | \ V / __/ | + |___/\___|_| \_/ \___|_| + + + Debian GNU/Linux 8.4 (jessie) (kernel 3.16.0-4-amd64) + + + System information as of Fri Apr 22 10:02:57 2016 + + System load: 2.74 Processes: 167 + Memory usage: 98% Users logged in: 1 + Swap usage: 31% + Usage of / : 40.6% of 23.71GB + Usage of /boot : 17.0% of 0.44GB + Usage of /mnt : 73.2% of 1863.01GB + + Logged in users: + user from laptop.example.org at Fri Apr 22 09:09:09 2016 + +No mail. +Last login: Fri Apr 22 09:23:01 2016 from laptop.example.org +``` + +**Warning** This Debian and Debian-related distributions only. + +## Dependencies + +You need to install some packages: + +``` +apt-get install figlet lsb-release python-utmp bc +``` + +Optionnally, you can install `needrestart` which is used to show a message if your server need a reboot (main reason (and the only one I know): you have upgraded your kernel). +If you don't install `needrestart`, it will work, but you won't be warned about the need for a reboot. + +## Installation + +``` +cp -r update-motd.d/ /etc +rm /etc/motd +ln -s /var/run/motd /etc/motd +``` + +## Salt + +You will find a working salt formula in `init.sls`. + +``` +cd /srv/salt +git clone https://framagit.org/luc/dynamic-motd.git motd +salt your_server state.sls motd +``` + +## License + +GPLv2. Have a look at the [LICENSE file](LICENSE). + +## Acknowledments + +- Dustin Kirkland, the guy behind the Ubuntu dynamic motd (I took some scripts from Ubuntu and stole inspiration too :D) +- https://github.com/maxis1718/update-motd.d for the skeleton +- https://github.com/jnweiger/landscape-sysinfo-mini for the python script (slightly modified) diff --git a/init.sls b/init.sls new file mode 100644 index 0000000..686e4b2 --- /dev/null +++ b/init.sls @@ -0,0 +1,27 @@ +motd-packages: + pkg.installed: + - pkgs: + - figlet + - lsb-release + - python-utmp + - needrestart + - bc +symbolic-motd: + file.symlink: + - name: /etc/motd + - target: /var/run/motd + - force: True + - backupname: Truek +dynamic-motd: + file.recurse: + - name: /etc/update-motd.d/ + - source: salt://motd/update-motd.d/ + - file_mode: 755 +remove-exec-colors: + file.managed: + - name: /etc/update-motd.d/colors + - mode: 644 +remove-exec-sysinfo: + file.managed: + - name: /etc/update-motd.d/sysinfo.py + - mode: 644 diff --git a/update-motd.d/00-figlet b/update-motd.d/00-figlet new file mode 100755 index 0000000..9ccc221 --- /dev/null +++ b/update-motd.d/00-figlet @@ -0,0 +1,8 @@ +#!/bin/sh + +. /etc/update-motd.d/colors + +printf "\n"$LIGHT_RED +figlet " "$(hostname -s) +printf $NONE +printf "\n" diff --git a/update-motd.d/01-banner b/update-motd.d/01-banner new file mode 100755 index 0000000..6c7dc46 --- /dev/null +++ b/update-motd.d/01-banner @@ -0,0 +1,41 @@ +#!/bin/bash +# +# 00-header - create the header of the MOTD +# Copyright (C) 2009-2010 Canonical Ltd. +# +# Authors: Dustin Kirkland +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License along +# with this program; if not, write to the Free Software Foundation, Inc., +# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + +# Modified by Luc Didry in 2016 + +. /etc/update-motd.d/colors + +[ -r /etc/update-motd.d/lsb-release ] && . /etc/update-motd.d/lsb-release + +if [ -z "$DISTRIB_DESCRIPTION" ] && [ -x /usr/bin/lsb_release ]; then + # Fall back to using the very slow lsb_release utility + DISTRIB_DESCRIPTION=$(lsb_release -s -d) +fi + +re='(.*\()(.*)(\).*)' +if [[ $DISTRIB_DESCRIPTION =~ $re ]]; then + DISTRIB_DESCRIPTION=$(printf "%s%s%s%s%s" "${BASH_REMATCH[1]}" "${YELLOW}" "${BASH_REMATCH[2]}" "${NONE}" "${BASH_REMATCH[3]}") +fi + +echo -e " "$DISTRIB_DESCRIPTION "(kernel "$(uname -r)")\n" + +# Update the information for next time +printf "DISTRIB_DESCRIPTION=%s" $(lsb_release -s -d) > /etc/update-motd.d/lsb-release & diff --git a/update-motd.d/03-system-info b/update-motd.d/03-system-info new file mode 100755 index 0000000..6ff6f77 --- /dev/null +++ b/update-motd.d/03-system-info @@ -0,0 +1,17 @@ +#!/bin/sh + +. /etc/update-motd.d/colors + +cores=$(grep -c ^processor /proc/cpuinfo 2>/dev/null) +[ "$cores" -eq "0" ] && cores=1 +threshold="${cores:-1}.0" + +echo + +if [ $(echo "`cut -f1 -d ' ' /proc/loadavg` < $threshold" | bc) -eq 1 ]; then + python /etc/update-motd.d/sysinfo.py +else + echo " System information disabled due to load higher than $threshold" +fi + +printf "\n" diff --git a/update-motd.d/04-need-upgrade b/update-motd.d/04-need-upgrade new file mode 100755 index 0000000..34264f3 --- /dev/null +++ b/update-motd.d/04-need-upgrade @@ -0,0 +1,10 @@ +#!/bin/bash + +. /etc/update-motd.d/colors + +n=$(apt-get -qq --just-print upgrade | cut -f 2 -d " " | sort -u | wc -l) +if [[ $n -gt 0 ]]; then + printf $LIGHT_RED + printf " You have %s packages waiting for upgrades." "$n" + printf $NONE"\n\n" +fi diff --git a/update-motd.d/05-need-reboot b/update-motd.d/05-need-reboot new file mode 100755 index 0000000..9b7b296 --- /dev/null +++ b/update-motd.d/05-need-reboot @@ -0,0 +1,13 @@ +#!/bin/bash + +. /etc/update-motd.d/colors + +if [[ -x /usr/sbin/needrestart ]]; then + n=$(DEBIAN_FRONTEND=noninteractive echo "" | needrestart -k -v -n 2>/dev/null | grep -c "Pending kernel upgrade\!") + if [[ $n -gt 0 ]]; then + printf $LIGHT_RED + printf " Pending kernel upgrade! " + printf $NONE + printf "You should consider rebooting your machine.\n\n" + fi +fi diff --git a/update-motd.d/colors b/update-motd.d/colors new file mode 100644 index 0000000..8d25855 --- /dev/null +++ b/update-motd.d/colors @@ -0,0 +1,11 @@ +NONE="\033[m" + +WHITE="\033[1;37m" +GREEN="\033[1;32m" +RED="\033[0;32;31m" +YELLOW="\033[1;33m" +BLUE="\033[34m" +CYAN="\033[36m" +LIGHT_GREEN="\033[1;32m" +LIGHT_RED="\033[1;31m" + diff --git a/update-motd.d/sysinfo.py b/update-motd.d/sysinfo.py new file mode 100644 index 0000000..09d958e --- /dev/null +++ b/update-motd.d/sysinfo.py @@ -0,0 +1,78 @@ +#!/usr/bin/python +# +# landscape-sysinfo-mini.py -- a trivial re-implementation of the +# sysinfo printout shown on debian at boot time. No twisted, no reactor, just /proc & utmp +# +# (C) 2014 jw@owncloud.com +# +# inspired by ubuntu 14.10 /etc/update-motd.d/50-landscape-sysinfo +# Requires: python-utmp +# for counting users. +# +# 2014-09-07 V1.0 jw, ad hoc writeup, feature-complete. Probably buggy? +# 2014-10-08 V1.1 jw, survive without swap +# 2014-10-13 V1.2 jw, survive without network + +# Modified by Luc Didry in 2016 +# Get the original version at https://github.com/jnweiger/landscape-sysinfo-mini + +import sys,os,time,posix,glob,utmp +from UTMPCONST import * + +_version_ = '1.2' + +def utmp_count(): + u = utmp.UtmpRecord() + users = 0 + for i in u: + if i.ut_type == utmp.USER_PROCESS: users += 1 + return users + +def proc_meminfo(): + items = {} + for l in open('/proc/meminfo').readlines(): + a = l.split() + items[a[0]] = int(a[1]) + # print items['MemTotal:'], items['MemFree:'], items['SwapTotal:'], items['SwapFree:'] + return items + +def proc_mount(): + items = {} + for m in open('/proc/mounts').readlines(): + a = m.split() + if a[0].find('/dev/') is 0: + statfs = os.statvfs(a[1]) + perc = 100-100.*statfs.f_bavail/statfs.f_blocks + gb = statfs.f_bsize*statfs.f_blocks/1024./1024/1024 + items[a[1]] = "%.1f%% of %.2fGB" % (perc, gb) + return items + +loadav = float(open("/proc/loadavg").read().split()[1]) +processes = len(glob.glob('/proc/[0-9]*')) +statfs = proc_mount() +users = utmp_count() +meminfo = proc_meminfo() +memperc = "%d%%" % (100-100.*meminfo['MemFree:']/(meminfo['MemTotal:'] or 1)) +swapperc = "%d%%" % (100-100.*meminfo['SwapFree:']/(meminfo['SwapTotal:'] or 1)) + +if meminfo['SwapTotal:'] == 0: swapperc = '---' + +print " System information as of %s\n" % time.asctime() +print " System load: %-5.2f Processes: %d" % (loadav, processes) +print " Memory usage: %-4s Users logged in: %d" % (memperc, users) +print " Swap usage: %s" % (swapperc) +for k in sorted(statfs.keys()): + print " Usage of %-24s: %-20s" % (k, statfs[k]) + +if users > 0: + a = utmp.UtmpRecord() + + print "\n Logged in users:" + + for b in a: # example of using an iterator + if b.ut_type == USER_PROCESS: + print " \033[1;31m%-10s\033[m from %-25s at %-20s" % \ + (b.ut_user, b.ut_host, time.ctime(b.ut_tv[0])) + a.endutent() + +sys.exit(0)