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Skipping from host to host...
sean at chittenden
Oct 2, 2001, 12:40 PM
Post #1 of 2 (2710 views)
Permalink
This is dependent on having your backhand-handler in the same
place on every host and on the same port, but I've found this useful
for moving from host to host and getting both mod_backhand information,
as well as general apache information. Adding a link to a perl, ruby,
and php status page shouldn't be hard, but I haven't found an
aestheticly nice way of doing that yet... or one that's mod_* aware.

This first patch is only for mod_backhand browsing, the second
is for backhand and server-status. Local configuration dependent
however... -sc

Index: back_util.c
===================================================================
RCS file: /storage/cvs/jesus/mod_backhand/back_util.c,v
retrieving revision 1.15
diff -u -r1.15 back_util.c
--- back_util.c 2001/07/06 01:09:38 1.15
+++ back_util.c 2001/10/02 19:26:53
@@ -179,7 +179,8 @@
tempport);
hostaddress[21] = '\0';
if(serverstats[i].contact.sin_addr.s_addr!=0)
- ap_rprintf(r, "<TR bgcolor=%s><TD align=center>%d</TD><TD>%s</TD>\
+ ap_rprintf(r, "<TR bgcolor=%s><TD align=center>%d</TD>\
+<TD><A href=\"%s://%s:%d%s\">%s</A></TD>\
<TD align=right>%d</TD><TD align=center>%s</TD><TD align=right>%d</TD>\
<TD align=left>%d</TD><TD align=center>%d/%d</TD><TD align=center>%d [%d]</TD>\
<TD align=right>%d</TD>\
@@ -187,6 +188,10 @@
(!is_alive(i,SERVER_TIMEOUT,now))?"#ff4444":
(i%2)?"#aaaaaa":"#cccccc",
i, /* Entry */
+ (r->server->port == 443 ? "https" : "http"), /* Protocol */
+ serverstats[i].hostname, /* hostname */
+ r->server->port, /* port number */
+ r->unparsed_uri, /* URI */
serverstats[i].hostname, /* hostname */
(int)(time(NULL) - serverstats[i].mtime), /* Age */
hostaddress, /* aaa.bbb.ccc.ddd:port */


Index: back_util.c
===================================================================
RCS file: /storage/cvs/jesus/mod_backhand/back_util.c,v
retrieving revision 1.15
diff -u -r1.15 back_util.c
--- back_util.c 2001/07/06 01:09:38 1.15
+++ back_util.c 2001/10/02 19:38:36
@@ -179,16 +179,23 @@
tempport);
hostaddress[21] = '\0';
if(serverstats[i].contact.sin_addr.s_addr!=0)
- ap_rprintf(r, "<TR bgcolor=%s><TD align=center>%d</TD><TD>%s</TD>\
-<TD align=right>%d</TD><TD align=center>%s</TD><TD align=right>%d</TD>\
-<TD align=left>%d</TD><TD align=center>%d/%d</TD><TD align=center>%d [%d]</TD>\
-<TD align=right>%d</TD>\
+ ap_rprintf(r, "<TR bgcolor=%s><TD align=center>%d</TD>\
+<TD><A href=\"%s://%s:%d%s\">%s</A></TD>\
+<TD align=right>%d</TD><TD align=center><A href=\"%s://%s/server-status/\">%s</A></TD>\
+<TD align=right>%d</TD><TD align=left>%d</TD><TD align=center>%d/%d</TD>\
+<TD align=center>%d [%d]</TD><TD align=right>%d</TD>\
<TD align=center>%d</TD><TD align=right>%f/%d</TD><TD align=right>%f</TD></TR>\n",
(!is_alive(i,SERVER_TIMEOUT,now))?"#ff4444":
(i%2)?"#aaaaaa":"#cccccc",
i, /* Entry */
+ (r->server->port == 443 ? "https" : "http"), /* Protocol */
serverstats[i].hostname, /* hostname */
+ r->server->port, /* port number */
+ r->unparsed_uri, /* URI */
+ serverstats[i].hostname, /* hostname */
(int)(time(NULL) - serverstats[i].mtime), /* Age */
+ (r->server->port == 443 ? "https" : "http"), /* Protocol */
+ hostaddress, /* aaa.bbb.ccc.ddd:port */
hostaddress, /* aaa.bbb.ccc.ddd:port */
serverstats[i].tmem, /* Total physical memory */
serverstats[i].amem, /* Avilable memory */

--
Sean Chittenden
Skipping from host to host... [ In reply to ]
jesus at omniti
Oct 30, 2001, 1:05 PM
Post #2 of 2 (2530 views)
Permalink
This seems like it would be tough if your backhand instance is running
on a different port that the "advertised" instance. I think it doesn't
satisfy a general-enough case to include. I think that writing a perl
(and python and PHP and ruby, etc.) Interface to the mod_backhand
serverstats shared memory segment would solve all the problems.

Then you could do all sorts of really slick stuff in a status page and
it wouldn't require editing mod_backhand source -- ugh. It would also
open the application up to a little knowledge of cluster-wide resources
and a availability.

On Tuesday, October 2, 2001, at 03:40 PM, Sean Chittenden wrote:

> This is dependent on having your backhand-handler in the same
> place on every host and on the same port, but I've found this useful
> for moving from host to host and getting both mod_backhand information,
> as well as general apache information. Adding a link to a perl, ruby,
> and php status page shouldn't be hard, but I haven't found an
> aestheticly nice way of doing that yet... or one that's mod_* aware.
>
> This first patch is only for mod_backhand browsing, the second
> is for backhand and server-status. Local configuration dependent
> however... -sc
>
> Index: back_util.c
> ===================================================================
> RCS file: /storage/cvs/jesus/mod_backhand/back_util.c,v
> retrieving revision 1.15
> diff -u -r1.15 back_util.c
> --- back_util.c 2001/07/06 01:09:38 1.15
> +++ back_util.c 2001/10/02 19:26:53
> @@ -179,7 +179,8 @@
> tempport);
> hostaddress[21] = '\0';
> if(serverstats[i].contact.sin_addr.s_addr!=0)
> - ap_rprintf(r, "<TR bgcolor=%s><TD
> align=center>%d</TD><TD>%s</TD>\
> + ap_rprintf(r, "<TR bgcolor=%s><TD align=center>%d</TD>\
> +<TD><A href=\"%s://%s:%d%s\">%s</A></TD>\
> <TD align=right>%d</TD><TD align=center>%s</TD><TD align=right>%d</TD>\
> <TD align=left>%d</TD><TD align=center>%d/%d</TD><TD align=center>%d
> [%d]</TD>\
> <TD align=right>%d</TD>\
> @@ -187,6 +188,10 @@
> (!is_alive(i,SERVER_TIMEOUT,now))?"#ff4444":
> (i%2)?"#aaaaaa":"#cccccc",
> i, /* Entry */
> + (r->server->port == 443 ? "https" : "http"), /*
> Protocol */
> + serverstats[i].hostname, /* hostname */
> + r->server->port, /* port number */
> + r->unparsed_uri, /* URI */
> serverstats[i].hostname, /* hostname */
> (int)(time(NULL) - serverstats[i].mtime), /* Age */
> hostaddress, /*
> aaa.bbb.ccc.ddd:port */
>
>
> Index: back_util.c
> ===================================================================
> RCS file: /storage/cvs/jesus/mod_backhand/back_util.c,v
> retrieving revision 1.15
> diff -u -r1.15 back_util.c
> --- back_util.c 2001/07/06 01:09:38 1.15
> +++ back_util.c 2001/10/02 19:38:36
> @@ -179,16 +179,23 @@
> tempport);
> hostaddress[21] = '\0';
> if(serverstats[i].contact.sin_addr.s_addr!=0)
> - ap_rprintf(r, "<TR bgcolor=%s><TD
> align=center>%d</TD><TD>%s</TD>\
> -<TD align=right>%d</TD><TD align=center>%s</TD><TD align=right>%d</TD>\
> -<TD align=left>%d</TD><TD align=center>%d/%d</TD><TD align=center>%d
> [%d]</TD>\
> -<TD align=right>%d</TD>\
> + ap_rprintf(r, "<TR bgcolor=%s><TD align=center>%d</TD>\
> +<TD><A href=\"%s://%s:%d%s\">%s</A></TD>\
> +<TD align=right>%d</TD><TD align=center><A
> href=\"%s://%s/server-status/\">%s</A></TD>\
> +<TD align=right>%d</TD><TD align=left>%d</TD><TD
> align=center>%d/%d</TD>\
> +<TD align=center>%d [%d]</TD><TD align=right>%d</TD>\
> <TD align=center>%d</TD><TD align=right>%f/%d</TD><TD
> align=right>%f</TD></TR>\n",
> (!is_alive(i,SERVER_TIMEOUT,now))?"#ff4444":
> (i%2)?"#aaaaaa":"#cccccc",
> i, /* Entry */
> + (r->server->port == 443 ? "https" : "http"), /*
> Protocol */
> serverstats[i].hostname, /* hostname */
> + r->server->port, /* port number */
> + r->unparsed_uri, /* URI */
> + serverstats[i].hostname, /* hostname */
> (int)(time(NULL) - serverstats[i].mtime), /* Age */
> + (r->server->port == 443 ? "https" : "http"), /*
> Protocol */
> + hostaddress, /*
> aaa.bbb.ccc.ddd:port */
> hostaddress, /*
> aaa.bbb.ccc.ddd:port */
> serverstats[i].tmem, /* Total physical
> memory */
> serverstats[i].amem, /* Avilable memory */
>
> --
> Sean Chittenden
>
> _______________________________________________
> backhand-devel mailing list
> backhand-devel@lists.backhand.org
> http://lists.backhand.org/mailman/listinfo/backhand-devel
>
--
Theo Schlossnagle
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