monit 5.25.2

These are our credential settings:

set httpd port 2812
allow localhost
allow guest:guest read-only
allow @wheel
allow cleartext /opt/monit/htpasswd


  • localhost to enable monit status
  • guest:guest to enable web access, read-only, for everyone as guest
  • @wheel to enable web access, full, for the local users, group wheel
  • cleartext to enable web access, full, for a pair of users not on the host

I read the docs and I try to 'shuffle' the settings (sigh) but I cannot understand how to fix the usual problem: only one of this two usages is working:

  • from commandline, monit status
  • web access from a client pc (ip address isn't the host itself)


I stumbled upon two issues:

  • allow localhost

Without it, all the clients pc can access, but monit status doesn't work.

Using 'allow localhost', it blocks the clients, so we have to specify also:


IMHO this isn't clear from the docs.

  • tests from the clients pc... beware of credentials

Trying the accesses to monit from the pc, the browser caches the credentials... so these tests can be misleading.


I found the problem:

strace -s 512 -e connect,write /opt/monit/bin/monit status  2>&1 |more

connect(4, {sa_family=AF_INET, sin_port=htons(2812), sin_addr=inet_addr("")}, 16) = -1 EINPROGRESS (Operation now in progress)

write(4, "POST /_status HTTP/1.0\r\nContent-Type: application/x-www-form-urlencoded\r\nCookie: securitytoken=88521284dfbc7acea0521e16e11356d1\r\nContent-Length: 58\r\n\
r\nformat=text&securitytoken=88521284dfbc7acea0521e16e11356d1", 209) = 209

write(2, "You are not authorized to access monit..."

Why does it send the Cookie: securitytoken= ?

In the configuration we have defined

allow guest:guest read-only

If I make the HTTP request with the guest credentials, it works:

"GET /_status?format=text HTTP/1.0\r\nAuthorization:Basic Z3Vlc3Q6Z3Vlc3Q=\r\n\r\n"

I open a ticket and the developers found it is a bug.

They are working on it.


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