API + restart the services that restart is required

[#1]

after adding new parameter and value to the ambari cluster , we need to restart the service to take affect

from ambari GUI restart the service is required , and we can see that because restart button is colored with orange

so my question is

we need API command that restart only the services that restart is required?

[#2]

@uri ben-ari

Please try this:

# curl -iv -u admin:admin -H "X-Requested-By: ambari" -X POST  -d '{"RequestInfo":{"command":"RESTART","context":"Restart all required services","operation_level":"host_component"},"Requests/resource_filters":[{"hosts_predicate":"HostRoles/stale_configs=true"}]}' http://$AMBARI_SERVER:8080/api/v1/clusters/$CLUSTER_NAME/reques

.

Please replace the $AMBARI_SERVER with ambari FQDN

$CLUSTER_NAME = clustername.

.

[#3]

thank you very much - I will test it on my ambari cluster

[#4]

btw - regarding my previews question , how to find the config type for the parameter , can we talk about this ?

[#5]

@uri ben-ari

I just responded there: https://community.hortonworks.com/questions/121757/how-to-find-config-type-by-api-command-1.html

[#6]

from some reason I get - HTTP/1.1 404 Not Found

[#7]

@uri ben-ari

The "Restart all required services" feature is available from ambari 2.5 onwards only.

If you are getting 404 in Ambari 2.5 then you might be doing something wrong in the URL.

In my case i missed "t" at the end of th URL. The "request" became "reques" Please correct it as following:

# curl -iv -u admin:admin -H "X-Requested-By: ambari" -X POST  -d '{"RequestInfo":{"command":"RESTART","context":"Restart all required services","operation_level":"host_component"},"Requests/resource_filters":[{"hosts_predicate":"HostRoles/stale_configs=true"}]}' http://$AMBARI_SERVER:8080/api/v1/clusters/$CLUSTER_NAME/request

.

[#8]

I change the hostname and the cluster name maybe something else in the syntax

[#9]

* Trying 109.164.35.62... * Connected to master.urns.com (109.164.35.62) port 8080 (#0) * Server auth using Basic with user 'admin' > POST /api/v1/clusters/HDP01/request HTTP/1.1 > Authorization: Basic YWRtaW46YWRtaW4= > User-Agent: curl/7.29.0 > Host: master.urns.com:8080 > Accept: */* > X-Requested-By: ambari > Content-Length: 195 > Content-Type: application/x-www-form-urlencoded > * upload completely sent off: 195 out of 195 bytes < HTTP/1.1 404 Not Found HTTP/1.1 404 Not Found < X-Frame-Options: DENY X-Frame-Options: DENY < X-XSS-Protection: 1; mode=block X-XSS-Protection: 1; mode=block < X-Content-Type-Options: nosniff X-Content-Type-Options: nosniff < Cache-Control: no-store Cache-Control: no-store < Pragma: no-cache Pragma: no-cache < Set-Cookie: AMBARISESSIONID=1kmyjqsidore28zeh3nxu88c5;Path=/;HttpOnly Set-Cookie: AMBARISESSIONID=1kmyjqsidore28zeh3nxu88c5;Path=/;HttpOnly < Expires: Thu, 01 Jan 1970 00:00:00 GMT Expires: Thu, 01 Jan 1970 00:00:00 GMT < User: admin User: admin < Content-Length: 0 Content-Length: 0 < Server: Jetty(8.1.19.v20160209) Server: Jetty(8.1.19.v20160209)

[#10]

as you can see from the log hostname is ok ans the cluster name