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
Available for	Python 2, Python 3
Requirements	Python module `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 (all
                        located in the United States): "https://ipv4.icanhazip
                        .com,https://ipecho.net/plain,https://ipinfo.io/ip".
                        Default: None
  --tags                Guess a list of tags to apply in Icinga Director
                        (Linuxfabrik Basket Config).

Usage Examples

./about-me

Output (first line) on a VM:

myhostname: Rocky Linux release 8.7 (Green Obsidian) virtualized on kvm, QEMU Standard PC (i440FX + PIIX, 1996), Firmware: n/a, SerNo: n/a, Proc: pc-i440fx-7.0, #Cores: 4, #Threads: 4, Current Speed: 2000 MHz, 6 GB RAM, BIOS boot, Disk vda 128G, tuned profile "virtual-guest", Public IP 92.107.220.171, born 2022-09-02. Features: firewalld, iptables, lvm, nftables, selinux. About-me v2023021401

Output (first line) on a Laptop:

myhostname: Fedora release 37 (Thirty Seven) on Bare-Metal, Dell Inc. XPS 13 9310, Firmware: n/a, SerNo: ABC1234, Proc: 11th Gen Intel Core i7-1185G7 @ 3.00GHz, #Cores: 4, #Threads: 8, Current Speed: 3000 MHz, 16 GB RAM, UEFI boot, Disk nvme0n1 953.9G, Public IP 1.2.3.4, born 2022-01-16. Features: firewalld, iptables, lvm, nftables, selinux. About-me v2023021401

Output (first line) on a Raspberry Pi:

myhostname: Raspbian GNU/Linux 10 (buster) on Bare-Metal, Raspberry Pi 4 Model B Rev 1.4, 4 CPUs, 7.7GiB RAM, BIOS boot, Public IP 1.2.3.4, Missing: firewalld, iptables, lvm, nftables, selinux. About-me v2023021401

Example for full Output:

myhostname - Rocky Linux release 8.6 (Green Obsidian) virtualized on kvm, BIOS boot, sys dimensions n/a (consider installing psutil), Disk vda 128G, tuned profile "virtual-guest", Public IP 1.2.3.4, born 2022-09-02. Features: lvm, selinux. Missing: firewalld, iptables, nftables. About-me v2023010501

SW installed:
* chronyd 4.2
* Exim 4.96
* g++ 8.5.0
* gcc 8.5.0
* gpg (GnuPG) 2.2.20
* ipmitool 1.8.18
* Linux Kernel 4.18.0-372.19.1.el8_6.x86_64
* OpenSSL 1.1.1k
* Perl 5.26.3
* Python 3.6.8
* `python3` cmd mapped to 3.6.8
* QEMU Guest Agent 6.2.0
* ssh 8.0p1
* sudo 1.8.29
* systemd 239

SW found/guessed:
* Firewall Builder

Tools:
* dig
* hdparm
* lsof
* nano
* rsync
* telnet
* vim
* wget

Non-default Users:
user    ! pw ! uid  ! gid  ! comment ! home_dir        ! user_shell
--------+----+------+------+---------+-----------------+---------------
exim    ! x  ! 93   ! 93   !         ! /var/spool/exim ! /sbin/nologin
vagrant ! x  ! 1000 ! 1000 !         ! /home/vagrant   ! /bin/bash

systemctl get-default:
* multi-user.target

systemctl list-unit-files --type service --state enabled:
* auditd.service
* autovt@.service
* chronyd.service
* crond.service
* dbus-org.freedesktop.nm-dispatcher.service
* dbus-org.freedesktop.timedate1.service
* getty@.service
* haveged.service
* import-state.service
* irqbalance.service
* loadmodules.service
* lvm2-monitor.service
* NetworkManager-dispatcher.service
* NetworkManager-wait-online.service
* NetworkManager.service
* nfs-server.service
* nis-domainname.service
* qemu-guest-agent.service
* rpcbind.service
* rsyncd.service
* rsyslog.service
* selinux-autorelabel-mark.service
* snmpd.service
* sshd.service
* sssd.service
* syslog.service
* sysstat.service
* timedatex.service
* tuned.service
* vsftpd.service

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

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

systemctl list-timers:
* sysstat-collect.timer
* dnf-makecache.timer
* mlocate-updatedb.timer
* unbound-anchor.timer
* sysstat-summary.timer
* systemd-tmpfiles-clean.timer

crontab:
01 * * * * root run-parts /etc/cron.hourly
1   5   cron.daily      nice run-parts /etc/cron.daily
7   25  cron.weekly     nice run-parts /etc/cron.weekly
@monthly 45 cron.monthly        nice run-parts /etc/cron.monthly

3rd-party Python libraries required by any of the plugins:
* Installed: none
* Missing: bs4, psutil, pymysql.cursors, smbprotocol.exceptions, vici

Tags:
* chronyd
* exim
* fwbuilder
* ipmi
* OS: Rocky Linux release 8.6 (Green Obsidian), family "RedHat"
* nfs-server
* rsyncd
* snmpd
* vsftpd

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.