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Matouš Jan Fialka mjf

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mjf / 💀.conf
Last active January 10, 2023 15:09
💀
#! /usr/sbin/nft -f
# 💀 aka "absolute" firewall for Linux
flush ruleset
table netdev netdev_rules {
chain netdev_filter_ingress_device_lo {
type filter hook ingress device lo priority 0
policy drop
@mjf
mjf / food_bloggers.md
Last active February 8, 2023 09:03
Food Bloggers
@mjf
mjf / Add_Custom_Local_Parameters_for_Zimbra_Postfix_Configuration.md
Last active November 28, 2022 10:24
Add Custom Local Parameters for Zimbra Postfix Configuration

Add Custom Local Parameters for Zimbra Postfix Configuration

We will add two custom local parameters:

  • sender_bcc_maps
  • recipient_bcc_maps

so that we could define our own per-user Bcc: forwarding for all users in a domain (also see this Gist to know more generally about how to configure it for Postfix).




  


  




    


          
    

      

        
        

          

              @mjf
          

          

            
                mjf
                / Enable_BCC_Forwarding_For_All_Domain_Users.md
            
            

              Created
              November 28, 2022 07:47
            

              
                Enable BCC Forwarding For All Domain Users
              
          

        

      

        

  

      

    
Enable BCC Forwarding For All Domain Users


# /etc/postfix/main.cf
sender_bcc_maps    = pcre:/etc/postfix/domain_users_bcc_maps
recipient_bcc_maps = pcre:/etc/postfix/domain_users_bcc_maps


# /etc/postfix/domain_users_bcc_maps



  


  




    


          
    

      

        
        

          

              @mjf
          

          

            
                mjf
                / online-interface-rename-systemd-networkd-udevd.md
            
            

              Last active
              November 28, 2022 10:09
            

              
                Online rename interface with Systemd Networkd and Udevd
              
          

        

      

        

  

      

    
Online rename interface with Systemd Networkd


    

  1. 

    create .link file in for the interface to rename it to a name of choice:
    

    [Match]
OriginalName=*
MACAddress=<mac-address>

    

    2. 



[Link]



  


  




    


          
    

      

        
        

          

              @mjf
          

          

            
                mjf
                / zimbra-9.0.0.bugfixes.md
            
            

              Last active
              April 14, 2023 10:27
            

              
                Fix Zimbra 9.0.0 GA 4325 for RHEL8 x86_64 20220629074359 NETWORK edition, Patch 9.0.0_P28-32 issues
              
          

        

      

        

  

      

    
Zimbra 9.0.0 GA 4325 Patch 28-32 Bugfixes


cat /etc/os-release


NAME="Rocky Linux"
VERSION="8.7 (Green Obsidian)"



  


  




    


          
    

      

        
        

          

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                mjf
                / postgres_emergency_vacuum_full_if_not_enough_space_is_left.md
            
            

              Last active
              September 16, 2022 09:29
            

              
                [Postgres] Reclaiming space from bloated table without enough space left
              
          

        

      

        

  

      

    
Reclaiming space from bloated table without enough space left


The vacuum full needs two-times the table size to perform on it because
it first makes full physical copy of the table. If you are running out of
space and in need of reclaiming the space occupated by dead tuples from
a bloated database table but you can not because of lacking free space
in the table's namespace here is how you can work around that (assuming you
some additional disk space resources can be added to the server). It is also
the least disruptive method of doing it (in comparison to the obvious dump
and restore et cetera).



  


  




    


          
    

      

        
        

          

              @mjf
          

          

            
                mjf
                / postgres_ml_discussions.md
            
            

              Last active
              September 15, 2022 11:12
            

              
                Postgres ML discussions
              
          

        

      

        

  



    


          
    

      

        
        

          

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                mjf
                / rust_blogs.md
            
            

              Created
              September 7, 2022 08:51
            

              
                Rust Language Related Blogs
              
          

        

      

        

  

      

    
  


  




    


          
    

      

        
        

          

              @mjf
          

          

            
                mjf
                / WTF [Zimbra].md
            
            

              Created
              August 30, 2022 06:49
            

              
                WTF [Zimbra]
              
          

        

      

        

  

      

    
3x run?! One rights after another?!


zimbra@zimbra:~$ zmprov modifyConfig zimbraMtaMaxMessageSize 1073741824
/opt/zimbra/bin/zmjava: line 59: /bin/java: No such file or directory
zimbra@zimbra:~$ zmprov modifyConfig zimbraMtaMaxMessageSize 1073741824
Killed
zimbra@zimbra:~$ zmprov modifyConfig zimbraMtaMaxMessageSize 1073741824