[ClusterLabs] crm_mon -h (writing to a html-file) not showing all desired information and having trouble with the -d option

[Ken Gaillot]

On 05/08/2017 11:13 AM, Lentes, Bernd wrote:
> Hi,
> 
> playing around with my cluster i always have a shell with crm_mon running because it provides me a lot of useful and current information concerning cluster, nodes, resources ...
> Normally i have a "crm_mon -nrfRAL" running.
> I'd like to have that output as a web page too.
> So i tried the option -h.
> I have crm_mon from pacemaker 1.1.12 on a SLES 11 SP4 box. I'm writing the file to /srv/www/hawk/public/crm_mon.html.
> I have hawk running, so i don't need an extra webserver for that.
> 
> First, i was very astonished when i used the option -d (daemonize). Using that hawk does not find the html-file, although i see it in the fs, and it's looking good.
> Hawk (or lighttpd) throws an error 404. Without -d lighttpd finds the files and presents it via browser !?!
> 
> This is the file without -d:
> 
> ha-idg-2:/srv/www/hawk/public # stat crm_mon.html
>   File: `crm_mon.html'
>   Size: 1963            Blocks: 8          IO Block: 4096   regular file
> Device: 1fh/31d Inode: 7082        Links: 1
> Access: (0644/-rw-r--r--)  Uid: (    0/    root)   Gid: (    0/    root)
> Access: 2017-05-08 18:03:25.695754151 +0200
> Modify: 2017-05-08 18:03:20.875680374 +0200
> Change: 2017-05-08 18:03:20.875680374 +0200
> 
> 
> Same file with crm_mon -d:
> 
> ha-idg-2:/srv/www/hawk/public # stat crm_mon.html
>   File: `crm_mon.html'
>   Size: 1963            Blocks: 8          IO Block: 4096   regular file
> Device: 1fh/31d Inode: 7084        Links: 1
> Access: (0640/-rw-r-----)  Uid: (    0/    root)   Gid: (    0/    root)

The "other" bit is gone, is that it?

> Access: 2017-05-08 18:04:16.048524856 +0200
> Modify: 2017-05-08 18:04:16.048524856 +0200
> Change: 2017-05-08 18:04:16.048524856 +0200
>  Birth: -
> 
> I see no important difference, just the different inode.
> 
> This is the access.log from lighttpd:
> 
> 10.35.34.70 ha-idg-2:7630 - [08/May/2017:18:04:10 +0200] "GET /crm_mon.html HTTP/1.1" 200 563 "https://ha-idg-2:7630/crm_mon.html" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safa
> ri/537.36"
> 10.35.34.70 ha-idg-2:7630 - [08/May/2017:18:04:15 +0200] "GET /crm_mon.html HTTP/1.1" 200 563 "https://ha-idg-2:7630/crm_mon.html" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safa
> ri/537.36"
> 10.35.34.70 ha-idg-2:7630 - [08/May/2017:18:04:20 +0200] "GET /crm_mon.html HTTP/1.1" 404 1163 "https://ha-idg-2:7630/crm_mon.html" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Saf
> ari/537.36"
> 
> It simply changes from http status code 200 to 404. Why ? 
> 
> And using "crm_mon -nfrotRALV -h /srv/www/hawk/public/crm_mon.html" i get the following output:
> 
> 
> Cluster summary
> 
> Last updated: Mon May 8 18:08:58 2017
> Current DC: ha-idg-2
> 2 Nodes configured.
> 14 Resources configured.
> Config Options
> 
> STONITH of failed nodes	:	enabled
> Cluster is	:	symmetric
> No Quorum Policy	:	Ignore
> Node List
> 
> Node: ha-idg-1: online
> prim_clvmd	(ocf::lvm2:clvmd):	Started 
> prim_stonith_ipmi_ha-idg-2	(stonith:external/ipmi):	Started 
> prim_ocfs2	(ocf::ocfs2:o2cb):	Started 
> prim_vm_mausdb	(ocf::heartbeat:VirtualDomain):	Started 
> prim_vg_cluster_01	(ocf::heartbeat:LVM):	Started 
> prim_fs_lv_xml_vm	(ocf::heartbeat:Filesystem):	Started 
> prim_dlm	(ocf::pacemaker:controld):	Started 
> prim_vnc_ip_mausdb	(ocf::lentes:IPaddr):	Started 
> Node: ha-idg-2: online
> prim_clvmd	(ocf::lvm2:clvmd):	Started 
> prim_stonith_ipmi_ha-idg-1	(stonith:external/ipmi):	Started 
> prim_ocfs2	(ocf::ocfs2:o2cb):	Started 
> prim_vg_cluster_01	(ocf::heartbeat:LVM):	Started 
> prim_fs_lv_xml_vm	(ocf::heartbeat:Filesystem):	Started 
> prim_dlm	(ocf::pacemaker:controld):	Started 
> Inactive Resources
> 
> I'm missing the constraints, operations and timing details. How can i get them ?
> 
> 
> Bernd

The crm_mon HTML code doesn't get many reports/requests/submissions from
users, so it doesn't get a lot of attention. I wouldn't be too surprised
if there are some loose ends.

I'm not sure why those sections wouldn't appear. The code for it seems
to be there.