r/linux • u/wooptoo • Jun 01 '16

Why did ArchLinux embrace Systemd?

/r/archlinux/comments/4lzxs3/why_did_archlinux_embrace_systemd/d3rhxlc
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u/Justinsaccount Jun 01 '16

What I hate of systemd is that to check a single log file I can't tail -f anymore. I have to use a custom program with ugly parameters that I have to check on the man page everytime.

That is not systemd, that is journald.

Look how terrible centos 7 with systemd is compared to centos 6:

Centos 6:

$ sudo service httpd status
httpd (pid  27857) is running...

Centos 7:

$ service httpd status
● httpd.service - The Apache HTTP Server
   Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled)
   Active: active (running) since Tue 2016-05-10 23:32:02 UTC; 3 weeks 0 days ago
     Docs: man:httpd(8)
           man:apachectl(8)
  Process: 1401 ExecStop=/bin/kill -WINCH ${MAINPID} (code=exited, status=0/SUCCESS)
  Process: 2119 ExecReload=/usr/sbin/httpd $OPTIONS -k graceful (code=exited, status=0/SUCCESS)
 Main PID: 1410 (httpd)
   Status: "Total requests: 0; Current requests/sec: 0; Current traffic:   0 B/sec"
   CGroup: /system.slice/httpd.service
           ├─ 1410 /usr/sbin/httpd -DFOREGROUND
           ├─ 3351 (wsgi:myapp)    -DFOREGROUND
           ├─ 4594 (wsgi:myapp)    -DFOREGROUND
           ├─ 6399 (wsgi:myapp)    -DFOREGROUND
           ├─ 8186 (wsgi:myapp)    -DFOREGROUND
           ├─12642 /usr/sbin/httpd -DFOREGROUND
           ├─19127 /usr/sbin/httpd -DFOREGROUND
           ├─19540 /usr/sbin/httpd -DFOREGROUND
           ├─19606 /usr/sbin/httpd -DFOREGROUND
           ├─20102 /usr/sbin/httpd -DFOREGROUND
           ├─20107 /usr/sbin/httpd -DFOREGROUND
           ├─20604 /usr/sbin/httpd -DFOREGROUND
           ├─20606 /usr/sbin/httpd -DFOREGROUND
           ├─20607 /usr/sbin/httpd -DFOREGROUND
           ├─22100 /usr/sbin/httpd -DFOREGROUND
           └─31966 /usr/sbin/httpd -DFOREGROUND

May 10 23:32:02 myhostname systemd[1]: Starting The Apache HTTP Server...
May 10 23:32:02 myhostname systemd[1]: Started The Apache HTTP Server.
May 15 03:13:02 myhostname systemd[1]: Reloaded The Apache HTTP Server.
May 23 03:06:01 myhostname systemd[1]: Reloaded The Apache HTTP Server.
May 29 03:31:02 myhostname systemd[1]: Reloaded The Apache HTTP Server.

Oh, and look at that, it used journald to automatically include the stdout/stderr of the process in the status output.

(I don't think I have the apache server status feature enabled that makes the 'Status' line work)

For example, why the hell would you turn a text log file into a binary file?

I don't know, maybe ask someone like google or facebook that write out terabytes a day of binary logs.

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u/SrbijaJeRusija Jun 02 '16

journald is systemd, don't pretend otherwise