Error: Linux and inotify_add_watch.
This is a common report error and this doesn’t actually refer to the amount of storage space, but to the amount of inotify watches that are available for a given file system Linux show me this:
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(0x7ffedb2c1390) Critical: inotify_add_watch(/home/mythcat/.config/lxqt/lxqt.conf) failed: (No space left on device) (0x7ffedb2c1390) Critical: inotify_add_watch(/usr/share/icons/breeze/icon-theme.cache) failed: (No space left on device) (0x7ffedb2c1390) Critical: inotify_add_watch(/home/mythcat/.config/lxqt/lxqt.conf) failed: (No space left on device) (0x7fffe9047930) Critical: inotify_add_watch(/home/mythcat/.config/lxqt/lxqt.conf) failed: (No space left on device) (0x7fffe9047930) Critical: inotify_add_watch(/usr/share/icons/breeze/icon-theme.cache) failed: (No space left on device) (0x7fffe9047930) Critical: inotify_add_watch(/home/mythcat/.config/lxqt/lxqt.conf) failed: (No space left on device) |
You can fix with this command:
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echo fs.inotify.max_user_watches=65536 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p |
Security – Detecting malware in Linux.
This tool is provided by R-fx Networks.
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[mythcat@desk ~]$ wget http://www.rfxn.com/downloads/maldetect-current.tar.gz [mythcat@desk ~]$ tar -xf maldetect-current.tar.gz [mythcat@desk ~]$ cd maldetect-1.6.4/ [mythcat@desk maldetect-1.6.4]$ su Password: [root@desk maldetect-1.6.4]# ./install.sh Failed to enable unit: Unit file maldet.service does not exist. Linux Malware Detect v1.6.4 (C) 2002-2019, R-fx Networks <proj@r-fx.org> (C) 2019, Ryan MacDonald <ryan@r-fx.org> This program may be freely redistributed under the terms of the GNU GPL installation completed to /usr/local/maldetect config file: /usr/local/maldetect/conf.maldet exec file: /usr/local/maldetect/maldet exec link: /usr/local/sbin/maldet exec link: /usr/local/sbin/lmd cron.daily: /etc/cron.daily/maldet maldet(31046): {sigup} performing signature update check... maldet(31046): {sigup} local signature set is version 201907043616 maldet(31046): {sigup} new signature set 2019081912001 available maldet(31046): {sigup} downloading https://cdn.rfxn.com/downloads/maldet-sigpack.tgz maldet(31046): {sigup} downloading https://cdn.rfxn.com/downloads/maldet-cleanv2.tgz maldet(31046): {sigup} verified md5sum of maldet-sigpack.tgz maldet(31046): {sigup} unpacked and installed maldet-sigpack.tgz maldet(31046): {sigup} verified md5sum of maldet-clean.tgz maldet(31046): {sigup} unpacked and installed maldet-clean.tgz maldet(31046): {sigup} signature set update completed maldet(31046): {sigup} 15552 signatures (12740 MD5 | 2035 HEX | 777 YARA | 0 USER) [root@desk maldetect-1.6.4]# vim /usr/local/maldetect/conf.maldet |
Change this row to scan_user_access=1 Now you can run it:
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[mythcat@desk ~]$ /usr/local/sbin/maldet -a |
SELinux – Commonly used commands.
In the last tutorial I wrote about two commands: chcon and restorecon. Today I will show you one list with some of the more commonly used command-line utilities for managing and operating SELinux provided by utilities: by policycoreutils package: fixfiles: Fixes the security context on file systems load_policy: Loads a new SELinux policy into the… Read More »
SELinux – Change context.
Processes and files are labeled with an SELinux context that contains additional information, such as an SELinux user, role, type, and, optionally, a level. When running SELinux, all of this information is used to make access control decisions. Let’s test this with httpd sercice and index.html file. You need to start this service on Fedora.… Read More »