Operate a cluster

Decommission a Rawx Service

Preparation

Find information about the service you want to decommission. By running openio cluster list rawx you will get the list of all Rawx service IDs accompanied by their volume paths.

Lock the score of the targeted rawx service to zero by running openio cluster lock rawx <RAWX_ID>, where RAWX_ID is the network address of the service (ip:port). This will prevent the service from getting upload requests, and will reduce the number of download requests.

Verify that the service is actually locked by running openio cluster list rawx again.

Configuration

Create a configuration file with the following template:

[blob-mover]
namespace = <YOUR NAMESPACE NAME>

# Run daemon as user
user = openio

# Logging configuration
#log_level = INFO
#log_facility = LOG_LOCAL0
#log_address = /dev/log
#syslog_prefix = OIO,OPENIO,blob-mover,1

# Volume to move
volume = <VOLUME PATH>

# Disk usage target (in percent)
#usage_target = 0

# Disk usage check interval (in seconds)
#usage_check_interval = 3600

# Report interval (in seconds)
#report_interval = 3600

# Throttle: max bytes per second
#bytes_per_second = 100000000

# Throttle: max chunks per second
#chunks_per_second = 30

Launch decommissioning

You can launch decommissioning using a configuration file with oio-blob-mover -v <CONFIGURATION FILE> (the -v is to log to stderr in addition to syslog).

If you don’t have a configuration file, you can run oio-blob-mover -v --generate-config <FILE> --namespace <NAMESPACE> --volume <VOLUME> --user <USER>.

The –generate-config option is used to generate a configuration file with the namespace, volume, and user specified in the command. If FILE doesn’t exist, it will be created; otherwise the file’s contents will be deleted and replace by the configuration content.

You can also add an option to on existing configuration file using –edit-config. –daemon can be used to run mover as a daemon.