Check about-me

Overview

Reports an overview about the host dimensions, its network interfaces, deployed software and recurring jobs:

System information (OS, CPUs, disks, ram, UEFI y/n etc.)
Python modules: Reports version of installed Python modules some of our checks depend on
Interfaces: All IPv4 network interfaces with their IP address
Listening TCP ports
Software installed: Lists well-known packages installed by your package manager
Software found/guessed: Manually installed software that resides in /home, /opt and /var/www/html
Tools: Admin-preferred tools like dig, vim, wget etc. - normally not installed on a minimal server system
Non-default system users
systemctl get-default: Default systemd target that will be booted into
systemctl List-unit-files: List of all systemd system units (excluding user units)
systemctl List-timers: List of all system systemd timers (excluding user timers)
crontab: List of crontabs that are found in the usual locations. note that this list is not complete

Have a look at the output examples below.

Plugin execution may take up to 30 seconds, depending on the amount or type of installed software.

Fact Sheet

Check Plugin Download	https://github.com/Linuxfabrik/monitoring-plugins/tree/main/check-plugins/about-me
Check Interval Recommendation	Once a day or once a week
Can be called without parameters	Yes
Compiled for	Linux
3rd Party Python modules	`psutil` (optional)

Help

usage: about-me [-h] [-V] [--public-ip-url PUBLIC_IP_URL] [--tags]

Reports a quick overview about the host dimensions and installed software.

options:
  -h, --help            show this help message and exit
  -V, --version         show program's version number and exit
  --public-ip-url PUBLIC_IP_URL
                        If you want this check to return the public IP
                        address, specify one ore more comma-separated URLs to
                        "what is my ip" online services. For example: "https:/
                        /ipv4.icanhazip.com,https://ipecho.net/plain,https://i
                        pinfo.io/ip" (these examples are located in the United
                        States). Default: None
  --tags                Guess a list of tags to apply in Icinga Director
                        (Linuxfabrik Basket Config).

Usage Examples

./about-me

Full output example:

myhostname: Fedora Linux 36 (Thirty Six) Kernel 6.2.10-100.fc36.x86_64 virtualized on kvm, OpenStack Foundation OpenStack Nova, Firmware: n/a, SerNo: 8259353c-789d-4c63-be49-e246ae23b31c, Proc: pc-i440fx-5.2, #Cores: 2, #Threads: 2, Current Speed: 2000 MHz, 4.0GiB RAM, Disk vda 20G, BIOS boot, born 2022-05-25. Features: iptables, lvm, nftables, selinux. Missing: firewalld. About-me v2023042301

Listening TCP Ports:
* 0.0.0.0:22/tcp4
* [::]:22/tcp6
* 127.0.0.1:25/tcp4
* 127.0.0.54:53/tcp4
* 127.0.0.53:53/tcp4
* 0.0.0.0:80/tcp4
* 0.0.0.0:443/tcp4
* [::]:3306/tcp6
* [::]:5355/tcp6
* 0.0.0.0:5355/tcp4
* [::]:5665/tcp6

SW installed:
* Apache httpd 2.4.56
* chronyd 4.3
* duplicity 0.8.23
* FreeIPA 4.9.11
* gcc 12.2.1
* Git 2.39.2
* Glances 3.3.1
* gpg (GnuPG) 2.3.7
* Icinga2 r2.13.6-1
* Linux Kernel 6.2.10-100.fc36.x86_64
* MariaDB 10.5.18-MariaDB
* Node 16.17.1
* npm 8.15.0
* OpenSSL 3.0.8
* Perl 5.34.1
* PHP 7.4.33
* PHP-FPM 7.4.33
* pip 21.3.1
* Postfix 3.6.4
* Python 3.10.10
* `python` cmd mapped to 3.10.10
* `python3` cmd mapped to 3.10.10
* QEMU Guest Agent 6.2.0
* ssh 8.8p1
* sudo 1.9.13p2
* systemd 250

SW found/guessed:
* Firewall Builder
* mod_security

Tools:
* dig
* hdparm
* iftop
* lsof
* nano
* rsync
* tmux
* vim
* wget

Non-default Users:
user        ! pw ! uid  ! gid  ! comment           ! home_dir           ! user_shell
------------+----+------+------+-------------------+--------------------+---------------
apache      ! x  ! 48   ! 48   ! Apache            ! /usr/share/httpd   ! /sbin/nologin
icinga      ! x  ! 993  ! 991  ! icinga            ! /var/spool/icinga2 ! /sbin/nologin
linuxfabrik ! x  ! 1000 ! 1000 ! fedora Cloud User ! /home/linuxfabrik  ! /bin/bash
mysql       ! x  ! 27   ! 27   ! MySQL Server      ! /var/lib/mysql     ! /sbin/nologin
nginx       ! x  ! 992  ! 988  ! Nginx web server  ! /var/lib/nginx     ! /sbin/nologin
postfix     ! x  ! 89   ! 89   !                   ! /var/spool/postfix ! /sbin/nologin

systemctl get-default:
* multi-user.target

systemctl list-unit-files --type service --state enabled:
* atd.service
* auditd.service
* bluetooth.service
* chronyd.service
* dbus-broker.service
* fwb.service
* getty@.service
* httpd.service
* icinga2.service
* import-state.service
* lvm2-monitor.service
* mariadb.service
* mdmonitor.service
* NetworkManager-dispatcher.service
* NetworkManager-wait-online.service
* NetworkManager.service
* nfs-convert.service
* nis-domainname.service
* oddjobd.service
* php-fpm.service
* postfix.service
* qemu-guest-agent.service
* rngd.service
* rpmdb-rebuild.service
* selinux-autorelabel-mark.service
* sshd.service
* sssd.service
* supervisord.service
* systemd-homed-activate.service
* systemd-homed.service
* systemd-oomd.service
* systemd-resolved.service
* udisks2.service

systemctl list-unit-files --type mount --state static --state generated:
* -.mount
* boot.mount
* data.mount
* dev-hugepages.mount
* dev-mqueue.mount
* home.mount
* proc-fs-nfsd.mount
* sys-fs-fuse-connections.mount
* sys-kernel-config.mount
* sys-kernel-debug.mount
* sys-kernel-tracing.mount
* tmp.mount
* var-lib-nfs-rpc_pipefs.mount
* var-log-audit.mount
* var-log.mount
* var-tmp.mount
* var.mount

systemctl list-unit-files --type automount --state enabled --state static:
* proc-sys-fs-binfmt_misc.automount

systemctl list-timers:
unit                         ! activates                      ! next
-----------------------------+--------------------------------+------------------------------
systemd-tmpfiles-clean.timer ! systemd-tmpfiles-clean.service ! Sat 2023-09-02 05:22:46 CEST
unbound-anchor.timer         ! unbound-anchor.service         ! Sat 2023-09-02 00:00:00 CEST
wordpress-cron.timer         ! wordpress-cron.service         ! Fri 2023-09-01 10:15:00 CEST

3rd-party Python libs required by any of the plugins when running in source code variant:
* Installed: psutil 5.8.0, pymysql.cursors 0.10.1
* Missing: bs4, pysmbclient, smbprotocol.exceptions, vici

Guessed Tags:
* apache-httpd
* chronyd
* duplicity
* fwbuilder
* OS: Fedora Linux 36 (Thirty Six), family "RedHat"
* mariadb* / mysql*
* mod_qos
* php
* php-fpm
* pip
* postfix-mta
* system-update

States

Always returns OK.

Perfdata / Metrics

Name	Type	Description
cpu	Number	Number of CPUs (if `dmidecode` is not available)
cpu_cores_enabled	Number	Number of enabled CPU cores (if `dmidecode` is available)
cpu_speed	Number	CPU speed (if `dmidecode` is available)
cpu_threads	Number	Number of CPU cores with Hyper-Threading enabled (if `dmidecode` is available)
disks	Number	Number of disks
osversion	None	‚Fedora 33‘ becomes ‚33‘, ‚CentOS 7.4.1708‘ becomes ‚741708‘ - to see when an upgrade happened
ram	Bytes	Size of memory (if `dmidecode` is not available)
ram	Bytes	Size of memory (if `dmidecode` is available)

Credits, License

Authors: Linuxfabrik GmbH, Zurich
License: The Unlicense, see LICENSE file.