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OCF_HEARTBEAT_NGINX(7) | OCF resource agents | OCF_HEARTBEAT_NGINX(7) |
NAME¶
ocf_heartbeat_nginx - Manages an Nginx web/proxy server instanceSYNOPSIS¶
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¶
configfileThe 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.
.sp
(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. .sp 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 parameter 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. .sp 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): startStarts 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¶
AUTHOR¶
Linux-HA contributors (see the resource agent source for information about individual authors)03/09/2014 | resource-agents UNKNOWN |