OPH_CLUSTER¶

Description¶

Type

Management.

Behaviour

Start and stop a cluster of I/O servers.

Parameters

action: use one of the following types:
- “deploy”: try to reserve hosts and starts I/O servers (default);
- “undeploy”: stop reservation and I/O servers.
nhost: number of hosts to be reserved as well as number of I/O servers to be started over them.
host_partition: name of user-defined partition to be used to group hosts.

System parameters

objkey_filter: filter on the output of the operator written to file (default=all => no filter, none => no output).
exec_mode : operator execution mode. Possible values are async (default) for asynchronous mode, sync for synchronous mode with json-compliant output.

Examples

Start 3 I/O servers:

[OPH_TERM] >>  oph_cluster nhost=3;host_partition=cluster;

Argument name	Type	Mandatory	Values	Default	Min/Max-value
host_partition	“string”	“yes”
nhost	“int”	“no”		“1”	“1” /
action	“string”	“no”	“deploy\|undeploy”	“deploy”
exec_mode	“string”	“no”	“async\|sync”	“async”
objkey_filter	“string”	“no”	“all\|none”	“all”