• rsyslog in container config


    You'll need to disable imklog or rsyslogd won't start: module(load="imklog") # provides kernel logging support This is essential unless you give full privileges to your container. Here is a full working rsyslog config in Ubuntu/Debian: module(load="imuxsock") # provides support for local system logging $ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat $FileOwner root........
  • dovecot: imap(root@localhost)<3702>: Error: Mailbox INBOX: mmap(size=352609044) failed with file /var/spool/mail/root/Maildir/dovecot.index.cache: Cannot allocate memory


    If you get this error you may assume it is a lack of memory, which it could be, but more likely it is the default memory size of 256M. The file in this example was about 350M big which of course exceeds the virtual memory limits. This makes sense in smaller mail servers but if you have large amounts of users or e-mails this limit should be bumped. Check your default size limit: doveconf -n | grep -E 'vsz_limit|service imap' default_vsz_limi........
  • CentOS 6 EOL yum repo won't work Error: Cannot find a valid baseurl for repo: base Solution


    yum update Loaded plugins: fastestmirror Setting up Install Process Determining fastest mirrors YumRepo Error: All mirror URLs are not using ftp, http[s] or file. Eg. Invalid release/repo/arch combination/ removing mirrorlist with no valid mirrors: /var/cache/yum/x86_64/6/base/mirrorlist.txt Error: Cannot find a valid baseurl for repo: base You have mail in /var/spool/mail/root ........
  • systemd management using systemctl and journalctl to check systemd logs


    systemd is like the service manager for your Centos and other modern Linux distributions (including Debian/Mint/Ubuntu) allows you to enable services, stop them, restart them, check their status and even reboot your system. The key commands or arguments you will use with systemctl are the following: Unit Commands: list-units [PATTERN...] List loaded units &nbs........
  • OpenVZ Solutions vzquota : (error) Can't open quota file for id 123123, maybe you need to reinitialize quota: No such file or directory


    Error: Unable to apply new quota values: quota not running Container start failed (try to check kernel messages, e.g. "dmesg | tail") Killing container ... Container was stopped Error: Unable to apply new quota values: quota not running Can't umount /vz/private/123123: Invalid argument [root@rtt 123123]# vzquota on 123123 vzquota : (error) Can't open quota file for id 123123, maybe you need to reinit........
  • K9 Mail Android Cannot See or View E-mails Disappear after reading - with Dovecot server. Solution


    This actually only happened after an e-mail server ran out of space due to run away log files. Normal Desktop clients were not affected. It appeared to be a bug in K9 mail but even reinstalling/wiping all settings did not fix it (read e-mails would still not reappear). This is moreso a bug in Dovecot where it probably messes up the index files. How do you fix this in Dovecot/your e-mail server? You need to delete the do........
  • LOG: MAIN PANIC failed to expand condition "${if eq {$authenticated_id}{}{0}{${if eq {$sender_address}{$local_part@$domain}{0}{${if match{$received_protocol}{N^e?smtps?a$N}{${perl{checkbx_autowhitelist}{$authenticated_id}}}{${if eq{$received_prot


    I experienced this with CPanel's Exim after an auto-update (a Google of this error produces lots of complaints with few clear solutions). In this case I'll put the solution at the top. Run /scripts/buildeximconf to rebuild the Exim config and it should be fine after that. mail -vs "from test" user@dest.com < .bash_history LOG: MAIN cwd=/root 4 args: send-mail -i -v user@dest.com LOG: MAIN &........
  • Virtualmin/Webmin Postfix Error: The status of your system is being checked to ensure that all enabled features are available, that the mail server is properly configured, and that quotas are active ..


    Virtualmin Postfix Error: The status of your system is being checked to ensure that all enabled features are available, that the mail server is properly configured, and that quotas are active .. A problem was found with your Postfix virtual maps : No map sources were found in the Postfix configuration .. your system is not ready for use by Virtualmin. ........
  • PHP cannot access /usr/bin/openssl


    PHP cannot access /usr/bin/opensslI have verified the username that runs the process is able to access /usr/bin/openssl and it does exist but the PHP script is saying it doesn't exist: [code:1:1fd0f3abbe] if (!file_exists($OPENSSL)) { //echo "ERROR: OPENSSL $OPENSSL not foundn"; }[/code:1:1fd0f3abbe] I don't get itI can clearly see the contents of /usr/bin by using the PHP system fu........
  • Latest Articles

  • How to combine .txt ACLs without breaking things
  • How to ping all of Googlebot's IPs script
  • 'virtio0' uses a qcow2 feature which is not supported by this qemu version: QCOW version 3
  • Linux bash script to get the IP of a list of hostnames
  • How To Use Camera Webcam in Docker for OBS Studio etc...
  • Computer Server Won't Post Boot Or Enter BIOS Setup After Installing RAID SAS or GPU Card etc..
  • How To Test PHP Scripts from CLI with GET variables/query string
  • apt-cache how to see all available versions of a package in Debian Ubuntu Mint
  • Virtualbox VBox Guest-utils drag and drop files stops working with Windows VMs
  • How To Remove Ubuntu Netplan and Go Back to /etc/network/interfaces
  • How To Force Flash an AMD Instinct GPU To Another Model Using Debian Ubuntu Mint Linux
  • How To compile ollama from source to use unsupported AMD GPU with rocm in Ubuntu Debian
  • QEMU KVM Virtio GPU Windows Cannot Select 1080P
  • Linux Gnome Desktop Ubuntu Mint Debian Gets Slower After Weeks
  • Firefox How to Save Full Page As Screenshot/PDF
  • Nvidia Datacenter Driver Tesla Slow nvidia-smi response and high utilization with 0 usage
  • ffmpeg how to normalize / increase the volume of your audio
  • kdenlive audio blips pops cracks artifacts solution fix
  • haproxy / nginx certbot SSL issues
  • nginx how to see the real IP when behind a CDN