OCF_HEARTBEAT_NGINX(7) OCF resource agents OCF_HEARTBEAT_NGINX(7)NAMEocf_heartbeat_nginx - Manages an Nginx web/proxy server instance
SYNOPSIS
nginx [start | stop | status | monitor | meta-data | validate-all]
DESCRIPTION
This is the resource agent for the Nginx web/proxy server. This
resource agent does not monitor POP or IMAP servers, as we don't know
how to determine meaningful status for them.
The start operation ends with a loop in which monitor is repeatedly
called to make sure that the server started and that it is operational.
Hence, if the monitor operation does not succeed within the start
operation timeout, the nginx resource will end with an error status.
The default monitor operation will verify that nginx is running.
The level 10 monitor operation by default will try and fetch the
/nginx_status page - which is commented out in sample nginx
configurations. Make sure that the /nginx_status page works and that
the access is restricted to localhost (address 127.0.0.1) plus whatever
places _outside the cluster_ you want to monitor the server from. See
the status10url and status10regex attributes for more details.
The level 20 monitor operation will perform a more complex set of tests
from a configuration file.
The level 30 monitor operation will run an external command to perform
an arbitrary monitoring operation.
SUPPORTED PARAMETERS
configfile
The full pathname of the Nginx configuration file. This file is
parsed to provide defaults for various other resource agent
parameters.
(unique, optional, string, no default)
httpd
The full pathname of the httpd binary (optional).
(optional, string, default "/usr/sbin/httpd")
port
A port number that we can probe for status information using the
statusurl. This will default to the port number found in the
configuration file, or 80, if none can be found in the
configuration file.
(optional, integer, no default)
status10url
The URL to monitor (the nginx server status page by default) when
given a level 10 monitor operation. If left unspecified, it will be
inferred from the nginx configuration file, or defaulted to
/nginx_status.
If you set this, make sure that it succeeds *only* from the
localhost (127.0.0.1) and no other cluster nodes. Otherwise, the
cluster software may complain about it being active on multiple
nodes.
(optional, string, no default)
status10regex
Regular expression to match in the output of status10url. Case
insensitive.
(optional, string, default "Reading: [0-9]+ Writing: [0-9]+
Waiting: [0-9]+")
testclient
Client to use to query to Nginx for level 10 and level 20 tests. If
not specified, the RA will try to find one on the system.
Currently, wget and curl are supported, with curl being preferred.
For example, you can set this paramter to "wget" if you prefer that
to curl.
(optional, string, no default)
testurl
URL to test. If it does not start with "http", then it's considered
to be relative to the document root address.
(optional, string, no default)
test20regex
Regular expression to match in the output of testurl. Case
insensitive.
(optional, string, no default)
testconffile
A file which contains a more complex test configuration. Could be
useful if you have to check more than one web application or in
case sensitive info should be passed as arguments (passwords).
Furthermore, using a config file is the only way to specify certain
parameters.
Please see README.webapps for examples and file description.
(optional, string, no default)
test20name
Name of the test within the test configuration file.
(optional, string, no default)
external_monitor30_cmd
Command string to run which implements level 30 monitoring.
(optional, string, no default)
options
Extra options to apply when starting nginx.
(optional, string, no default)
SUPPORTED ACTIONS
This resource agent supports the following actions (operations):
start
Starts the resource. Suggested minimum timeout: 40s.
stop
Stops the resource. Suggested minimum timeout: 60s.
reload
Suggested minimum timeout: 40s.
status
Performs a status check. Suggested minimum timeout: 30s.
monitor
Performs a detailed status check. Suggested minimum timeout: 30s.
Suggested interval: 10s.
monitor
Performs a detailed status check. Suggested minimum timeout: 30s.
Suggested interval: 30s.
monitor
Performs a detailed status check. Suggested minimum timeout: 45s.
monitor
Performs a detailed status check. Suggested minimum timeout: 60s.
meta-data
Retrieves resource agent metadata (internal use only). Suggested
minimum timeout: 5.
validate-all
Performs a validation of the resource configuration. Suggested
minimum timeout: 5.
EXAMPLE
The following is an example configuration for a nginx resource using
the crm(8) shell:
primitive p_nginx ocf:heartbeat:nginx \
op monitor timeout="30s" depth="0" interval="10s" \
op monitor timeout="30s" depth="10" interval="30s" \
op monitor timeout="45s" depth="20" \
op monitor timeout="60s" depth="30"
SEE ALSO
http://www.linux-ha.org/wiki/nginx_(resource_agent)AUTHOR
Linux-HA contributors (see the resource agent source for information
about individual authors)
resource-agents UNKNOWN 03/24/2013 OCF_HEARTBEAT_NGINX(7)
