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I think it would be helpful to document some examples on how to use the REST API with some popular REST clients, such as curl.
I did some testing myself.
First, I configured the following:
[maxscale]
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...
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admin_host=127.0.0.1
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admin_port=8989
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admin_auth=1
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admin_enabled=1
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And then I did some tests with the passive flag.
To read the value, I followed these directions:
https://mariadb.com/kb/en/mariadb-maxscale-23-maxscale-resource/#get-global-information
And did the following:
$ curl --include --basic --user "admin:mariadb" http://127.0.0.1:8989/v1/maxscale
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HTTP/1.1 200 OK
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Connection: Keep-Alive
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Content-Length: 1876
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Last-Modified: Fri, 11 Jan 2019 23:50:34 GMT
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ETag: "1"
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Date: Fri, 11 Jan 19 23:52:01 GMT
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Content-Type: application/json
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{
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"links": {
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"self": "http://127.0.0.1:8989/v1/maxscale/"
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},
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"data": {
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"attributes": {
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"parameters": {
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"libdir": "/usr/lib64/maxscale",
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"datadir": "/var/lib/maxscale",
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"process_datadir": "/var/lib/maxscale/data2997",
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"cachedir": "/var/cache/maxscale",
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"configdir": "/etc",
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"config_persistdir": "/var/lib/maxscale/maxscale.cnf.d",
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"module_configdir": "/etc/maxscale.modules.d",
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"piddir": "/var/run/maxscale",
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"logdir": "/var/log/maxscale",
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"langdir": "/var/lib/maxscale",
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"execdir": "/usr/bin",
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"connector_plugindir": "/var/lib/plugin",
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"threads": 4,
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"thread_stack_size": 8388608,
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"writeq_high_water": 0,
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"writeq_low_water": 0,
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"auth_connect_timeout": 3,
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"auth_read_timeout": 1,
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"auth_write_timeout": 2,
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"skip_permission_checks": false,
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"admin_auth": true,
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"admin_enabled": true,
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"admin_log_auth_failures": true,
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"admin_host": "127.0.0.1",
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"admin_port": 8989,
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"admin_ssl_key": "",
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"admin_ssl_cert": "",
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"admin_ssl_ca_cert": "",
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"passive": true,
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"query_classifier": "",
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"query_classifier_cache_size": 415775129
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},
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"version": "2.3.2",
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"commit": "1126c687a4570f60ee26a163520198a3263ccbbd",
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"started_at": "Fri, 11 Jan 2019 23:21:26 GMT",
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"activated_at": "Fri, 11 Jan 2019 23:21:26 GMT",
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"uptime": 1835
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},
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"id": "maxscale",
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"type": "maxscale"
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}
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}
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And then to change the value, I followed these directions:
https://mariadb.com/kb/en/mariadb-maxscale-23-maxscale-resource/#update-maxscale-parameters
And did the following:
$ curl --include --request PATCH --basic --user "admin:mariadb" http://127.0.0.1:8989/v1/maxscale --data @- <<EOF
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> {
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> "data": {
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> "attributes": {
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> "parameters": {
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> "passive": false
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> }
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> }
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> }
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> }
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> EOF
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HTTP/1.1 204 No Content
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Connection: Keep-Alive
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Date: Fri, 11 Jan 19 23:52:45 GMT
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And then I confirmed that the value changed by reading it again:
$ curl --include --basic --user "admin:mariadb" http://127.0.0.1:8989/v1/maxscale
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HTTP/1.1 200 OK
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Connection: Keep-Alive
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Content-Length: 1877
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Last-Modified: Fri, 11 Jan 2019 23:52:45 GMT
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ETag: "2"
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Date: Fri, 11 Jan 19 23:53:17 GMT
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Content-Type: application/json
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{
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"links": {
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"self": "http://127.0.0.1:8989/v1/maxscale/"
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},
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"data": {
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"attributes": {
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"parameters": {
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"libdir": "/usr/lib64/maxscale",
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"datadir": "/var/lib/maxscale",
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"process_datadir": "/var/lib/maxscale/data2997",
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"cachedir": "/var/cache/maxscale",
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"configdir": "/etc",
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"config_persistdir": "/var/lib/maxscale/maxscale.cnf.d",
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"module_configdir": "/etc/maxscale.modules.d",
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"piddir": "/var/run/maxscale",
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"logdir": "/var/log/maxscale",
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"langdir": "/var/lib/maxscale",
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"execdir": "/usr/bin",
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"connector_plugindir": "/var/lib/plugin",
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"threads": 4,
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"thread_stack_size": 8388608,
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"writeq_high_water": 0,
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"writeq_low_water": 0,
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"auth_connect_timeout": 3,
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"auth_read_timeout": 1,
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"auth_write_timeout": 2,
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"skip_permission_checks": false,
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"admin_auth": true,
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"admin_enabled": true,
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"admin_log_auth_failures": true,
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"admin_host": "127.0.0.1",
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"admin_port": 8989,
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"admin_ssl_key": "",
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"admin_ssl_cert": "",
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"admin_ssl_ca_cert": "",
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"passive": false,
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"query_classifier": "",
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"query_classifier_cache_size": 415775129
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},
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"version": "2.3.2",
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"commit": "1126c687a4570f60ee26a163520198a3263ccbbd",
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"started_at": "Fri, 11 Jan 2019 23:21:26 GMT",
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"activated_at": "Fri, 11 Jan 2019 23:52:42 GMT",
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"uptime": 1911
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},
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"id": "maxscale",
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"type": "maxscale"
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}
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}
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