Silver Quettier's questions

So, I configured Haproxy so the logging would go through rsyslog and, for now, be all dumped in one file.

It's definetly logging, as I get those "starting" messages on startup, but no HTTP requests logging at all. What is wrong with my configuration?

haproxy.cfg:

global
        log /dev/log local0 debug
        chroot /var/lib/haproxy
        stats socket /run/haproxy/admin.sock mode 660 level admin
        stats timeout 30s
        user haproxy
        group haproxy
        daemon

defaults
        log     global
        mode    http
        option  httplog
        option  dontlognull
        timeout connect 5000
        timeout client  50000
        timeout server  50000
        errorfile 400 /etc/haproxy/errors/400.http
        errorfile 403 /etc/haproxy/errors/403.http
        errorfile 408 /etc/haproxy/errors/408.http
        errorfile 500 /etc/haproxy/errors/500.http
        errorfile 502 /etc/haproxy/errors/502.http
        errorfile 503 /etc/haproxy/errors/503.http
        errorfile 504 /etc/haproxy/errors/504.http

frontend webfront
  option  forwardfor
  stats enable
  stats uri /haproxy?statis
  stats realm Haproxy\ Auth
  stats auth user:password
  bind *:80
  timeout client 86400000
  acl is_discourse  hdr_end(host) -i discourse.mydomain.com
  use_backend       discourse     if is_discourse
  use_backend       webserver     if !is_discourse

backend discourse
  balance source
  option forwardfor
  option httpclose
  server server1 127.0.0.1:3080 weight 1 maxconn 1024 check inter 10000

backend webserver
  balance source
  option forwardfor
  option httpclose
  server server2 127.0.0.1:4080 weight 1 maxconn 1024 check inter 10000

Log file:

root@kayak:/var/log/haproxy# tail haproxy.log
Nov 26 21:25:25 kayak haproxy[21646]: Proxy webfront started.
Nov 26 21:25:25 kayak haproxy[21646]: Proxy webfront started.
Nov 26 21:25:25 kayak haproxy[21646]: Proxy discourse started.
Nov 26 21:25:25 kayak haproxy[21646]: Proxy webserver started.
Nov 26 21:28:10 kayak haproxy[21868]: Proxy webfront started.
Nov 26 21:28:10 kayak haproxy[21868]: Proxy discourse started.
Nov 26 21:28:10 kayak haproxy[21868]: Proxy webserver started.
Nov 26 21:30:31 kayak haproxy[22045]: Proxy webfront started.
Nov 26 21:30:31 kayak haproxy[22045]: Proxy discourse started.
Nov 26 21:30:31 kayak haproxy[22045]: Proxy webserver started.

I visited some of the webserver pages between thsoe reboots and triggeered a few 404 errors. Why is nothing showing up?

Edit: rsyslog conf file.

/etc/rsyslog.d/49-haproxy.conf:

local0.* -/var/log/haproxy_0.log
if ($programname == 'haproxy') then -/var/log/haproxy/haproxy.log
& ~

I have trouble configuring Lighttpd to serve the various services hosted on my server. Lighttpd acts as a front, and I have several DNS records, each for a different subdomain, redirecting to the same machine.

The goal is to dispatch those requests by host to the various other web servers.

In particular, Discourse is set up as a Docker container. The embedded Nginx listens on port 80 of the container, which is mapped to port 3080 of the server via Docker:

$ docker ps
CONTAINER ID        IMAGE                          COMMAND                CREATED             STATUS              PORTS                                                                                                                              NAMES
7b115219788e        local_discourse/app:latest     "/sbin/runit"          11 weeks ago        Up 8 weeks          0.0.0.0:3022->22/tcp, 0.0.0.0:3080->80/tcp 

I enabled mod_proxy on Lighttpd, and here is the configuration:

server.modules = (
        "mod_access",
        "mod_alias",
        "mod_compress",
        "mod_redirect",
        "mod_rewrite",
        "mod_proxy",
)

server.document-root        = "/var/www"
server.upload-dirs          = ( "/var/cache/lighttpd/uploads" )
server.errorlog             = "/var/log/lighttpd/error.log"
server.pid-file             = "/var/run/lighttpd.pid"
server.username             = "www-data"
server.groupname            = "www-data"
server.port                 = 80


index-file.names            = ( "index.php", "index.html", "index.lighttpd.html" )
url.access-deny             = ( "~", ".inc" )
static-file.exclude-extensions = ( ".php", ".pl", ".fcgi" )

compress.cache-dir          = "/var/cache/lighttpd/compress/"
compress.filetype           = ( "application/javascript", "text/css", "text/html", "text/plain" )

# default listening port for IPv6 falls back to the IPv4 port
include_shell "/usr/share/lighttpd/use-ipv6.pl " + server.port
include_shell "/usr/share/lighttpd/create-mime.assign.pl"
include_shell "/usr/share/lighttpd/include-conf-enabled.pl"

$HTTP["host"] =~ "discourse.mydomain.com" {
    proxy.debug = 1
    proxy.server  = ( "" => ( "discourse" => ( "host" => "127.0.0.1", "port" => 3080, "fix-redirects" => 1 )))
}

I can tell the calls are getting somewhere, because the logs tell me so:

2014-11-17 21:15:55: (mod_proxy.c.1144) proxy - start
2014-11-17 21:15:55: (mod_proxy.c.1185) proxy - ext found
2014-11-17 21:15:55: (mod_proxy.c.1319) proxy - found a host 127.0.0.1 3080
2014-11-17 21:15:55: (mod_proxy.c.398) connect delayed: 10
2014-11-17 21:15:55: (mod_proxy.c.1000) proxy: fdevent-out 1
2014-11-17 21:15:55: (mod_proxy.c.1029) proxy - connect - delayed success
2014-11-17 21:15:55: (mod_proxy.c.969) proxy: fdevent-in 4
2014-11-17 21:15:55: (mod_proxy.c.667) proxy - have to read: 521
2014-11-17 21:15:55: (mod_proxy.c.969) proxy: fdevent-in 4
2014-11-17 21:15:55: (mod_proxy.c.667) proxy - have to read: 0

Yet, all I have when I go to discourse.redacted.com is a blank page - not a 404 error, mind you.

Am I missing something obvious?

Are there other logs I could pull?

Extra info: calling discourse.redacted.com:3080 works and gets me there.

I must update an Intel S3420GPLC board. BIOS, BMC, FRU / SDR, the whole thing.

Everything is pretty much automated in the Intel download. You're supposed to boot to the integrated EFI shell, mount the USB disk/key, and launch the startup.nsh script included in the download.

Thing is, I tried with both a 4GB USB key and a larger 60GB USB disk, with poor results. Both have, of course, FAT32 filesystems.

When plugging them in and running map -r from the EFI shell, the key is not even listed. The disk shows up as blk0 and I can switch to it. Problem is getting to the script:

• ls or dir commands returns "Cannot open current directory - Not found"
• cd update returns "Target directory not found"

It doesn't look like the disk is correctly mounted either. Any pointers on commands I could try or BIOS settings that could be off?

Edit, new info:

• I tried again with yet another hard disk, which yielded the same results than the first.
• The USB ports / controller do not seem to be the problem, those I used all worked with a keyboard.
• mount blk0 fs0 simply created an alias to blk0 but did not make it any more readable.

I want to monitor some hardware-related data on a headless CentOS6 server. More specifically, things like voltages, fan speeds, thermal data...

Since the server is headless, the best way I found to do this is through a php script that would format results from ipmitool in a nice manner.

Of course, the webserver user is not root, that would be bad. Sadly, it seems a non-root user has no rights to access /dev/ipmi*, which also makes sense.

Running ipmitool -U "someUser" -P "somePassword" sdr gives me the expected readings as root, but returns

Could not open device at /dev/ipmi0 or /dev/ipmi/0 or /dev/ipmidev/0: No such file or directory
Get Device ID command failed
Unable to open SDR for reading

when I'm logged in as the webserver.

I searched a bit here and there, and was interested in devfs.rules, but it seems it's not present on CentOS6, and I'm not familiar with mounting /dev-related things anyway.

Could anyone point me in the right direction ?