Package ganeti :: Package client :: Module gnt_cluster

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Module gnt_cluster

source code

Cluster related commands

Classes

[hide private]

_RunWhenNodesReachableHelper
Helper class to make shared internal state sharing easier.

Functions

[hide private]

int

InitCluster(opts, args)
Initialize the cluster.

source code

int

DestroyCluster(opts, args)
Destroy the cluster.

source code

int

RenameCluster(opts, args)
Rename the cluster.

source code

int

RedistributeConfig(opts, args)
Forces push of the cluster configuration.

source code

int

ShowClusterVersion(opts, args)
Write version of ganeti software to the standard output.

source code

int

ShowClusterMaster(opts, args)
Write name of master node to the standard output.

source code

_PrintGroupedParams(paramsdict, level=1, roman=False)
Print Grouped parameters (be, nic, disk) by group.

source code

int

ShowClusterConfig(opts, args)
Shows cluster information.

source code

int

ClusterCopyFile(opts, args)
Copy a file from master to some nodes.

source code

int

RunClusterCommand(opts, args)
Run a command on some nodes.

source code

int

VerifyCluster(opts, args)
Verify integrity of cluster, performing various test on nodes.

source code

int

VerifyDisks(opts, args)
Verify integrity of cluster disks.

source code

int

RepairDiskSizes(opts, args)
Verify sizes of cluster disks.

source code

int

MasterFailover(opts, args)
Failover the master node.

source code

int

MasterPing(opts, args)
Checks if the master is alive.

source code

int

SearchTags(opts, args)
Searches the tags on all the cluster.

source code

_RenewCrypto(new_cluster_cert, new_rapi_cert, rapi_cert_filename, new_confd_hmac_key, new_cds, cds_filename, force)
Renews cluster certificates, keys and secrets.

source code

RenewCrypto(opts, args)
Renews cluster certificates, keys and secrets.

source code

int

SetClusterParams(opts, args)
Modify the cluster.

source code

int

QueueOps(opts, args)
Queue operations.

source code

_ShowWatcherPause(until)

source code

int

WatcherOps(opts, args)
Watcher operations.

source code

_OobPower(opts, node_list, power)
Puts the node in the list to desired power state.

source code

_InstanceStart(opts, inst_list, start)
Puts the instances in the list to desired state.

source code

_RunWhenNodesReachable(node_list, action_cb, interval)
Run action_cb when nodes become reachable.

source code

_MaybeInstanceStartup(opts, inst_map, nodes_online, _instance_start_fn=_InstanceStart)
Start the instances conditional based on node_states.

source code

_EpoOn(opts, full_node_list, node_list, inst_map)
Does the actual power on.

source code

_EpoOff(opts, node_list, inst_map)
Does the actual power off.

source code

int

Epo(opts, args)
EPO operations.

source code

Main()

source code

Variables

[hide private]

ON_OPT = cli_option("--on", default= False, action= "store_tru...

GROUPS_OPT = cli_option("--groups", default= False, action= "s...

_EPO_PING_INTERVAL = 30

_EPO_PING_TIMEOUT = 1

_EPO_REACHABLE_TIMEOUT = 15* 60

commands = {"init":(InitCluster, [ArgHost(min= 1, max= 1)], [B...

aliases = {"masterfailover": "master-failover",}
dictionary with aliases for commands

Imports: os, time, OpenSSL, itertools, opcodes, constants, errors, utils, bootstrap, ssh, objects, uidpool, compat, netutils

Function Details

[hide private]

InitCluster(opts, args)

source code

Initialize the cluster.

Parameters:

opts - the command line options selected by the user
args (list) - should contain only one element, the desired cluster name

Returns: int

the desired exit code

Decorators:

@UsesRPC

DestroyCluster(opts, args)

source code

Destroy the cluster.

Parameters:

opts - the command line options selected by the user
args (list) - should be an empty list

Returns: int

the desired exit code

Decorators:

@UsesRPC

RenameCluster(opts, args)

source code

Rename the cluster.

Parameters:

opts - the command line options selected by the user
args (list) - should contain only one element, the new cluster name

Returns: int

the desired exit code

RedistributeConfig(opts, args)

source code

Forces push of the cluster configuration.

Parameters:

opts - the command line options selected by the user
args (list) - empty list

Returns: int

the desired exit code

ShowClusterVersion(opts, args)

source code

Write version of ganeti software to the standard output.

Parameters:

opts - the command line options selected by the user
args (list) - should be an empty list

Returns: int

the desired exit code

ShowClusterMaster(opts, args)

source code

Write name of master node to the standard output.

Parameters:

opts - the command line options selected by the user
args (list) - should be an empty list

Returns: int

the desired exit code

_PrintGroupedParams(paramsdict, level=1, roman=False)

source code

Print Grouped parameters (be, nic, disk) by group.

Parameters:

paramsdict (dict of dicts) - {group: {param: value, ...}, ...}
level (int) - Level of indention

ShowClusterConfig(opts, args)

source code

Shows cluster information.

Parameters:

opts - the command line options selected by the user
args (list) - should be an empty list

Returns: int

the desired exit code

ClusterCopyFile(opts, args)

source code

Copy a file from master to some nodes.

Parameters:

opts - the command line options selected by the user
args (list) - should contain only one element, the path of the file to be copied

Returns: int

the desired exit code

RunClusterCommand(opts, args)

source code

Run a command on some nodes.

Parameters:

opts - the command line options selected by the user
args (list) - should contain the command to be run and its arguments

Returns: int

the desired exit code

VerifyCluster(opts, args)

source code

Verify integrity of cluster, performing various test on nodes.

Parameters:

opts - the command line options selected by the user
args (list) - should be an empty list

Returns: int

the desired exit code

VerifyDisks(opts, args)

source code

Verify integrity of cluster disks.

Parameters:

opts - the command line options selected by the user
args (list) - should be an empty list

Returns: int

the desired exit code

RepairDiskSizes(opts, args)

source code

Verify sizes of cluster disks.

Parameters:

opts - the command line options selected by the user
args (list) - optional list of instances to restrict check to

Returns: int

the desired exit code

MasterFailover(opts, args)

source code

Failover the master node.

This command, when run on a non-master node, will cause the current master to cease being master, and the non-master to become new master.

Parameters:

opts - the command line options selected by the user
args (list) - should be an empty list

Returns: int

the desired exit code

Decorators:

@UsesRPC

MasterPing(opts, args)

source code

Checks if the master is alive.

Parameters:

opts - the command line options selected by the user
args (list) - should be an empty list

Returns: int

the desired exit code

SearchTags(opts, args)

source code

Searches the tags on all the cluster.

Parameters:

opts - the command line options selected by the user
args (list) - should contain only one element, the tag pattern

Returns: int

the desired exit code

_RenewCrypto(new_cluster_cert, new_rapi_cert, rapi_cert_filename, new_confd_hmac_key, new_cds, cds_filename, force)

source code

Renews cluster certificates, keys and secrets.

Parameters:

new_cluster_cert (bool) - Whether to generate a new cluster certificate
new_rapi_cert (bool) - Whether to generate a new RAPI certificate
rapi_cert_filename (string) - Path to file containing new RAPI certificate
new_confd_hmac_key (bool) - Whether to generate a new HMAC key
new_cds (bool) - Whether to generate a new cluster domain secret
cds_filename (string) - Path to file containing new cluster domain secret
force (bool) - Whether to ask user for confirmation

SetClusterParams(opts, args)

source code

Modify the cluster.

Parameters:

opts - the command line options selected by the user
args (list) - should be an empty list

Returns: int

the desired exit code

QueueOps(opts, args)

source code

Queue operations.

Parameters:

opts - the command line options selected by the user
args (list) - should contain only one element, the subcommand

Returns: int

the desired exit code

WatcherOps(opts, args)

source code

Watcher operations.

Parameters:

opts - the command line options selected by the user
args (list) - should contain only one element, the subcommand

Returns: int

the desired exit code

_OobPower(opts, node_list, power)

source code

Puts the node in the list to desired power state.

Parameters:

opts - The command line options selected by the user
node_list - The list of nodes to operate on
power - True if they should be powered on, False otherwise

Returns:

The success of the operation (none failed)

_InstanceStart(opts, inst_list, start)

source code

Puts the instances in the list to desired state.

Parameters:

opts - The command line options selected by the user
inst_list - The list of instances to operate on
start - True if they should be started, False for shutdown

Returns:

The success of the operation (none failed)

_RunWhenNodesReachable(node_list, action_cb, interval)

source code

Run action_cb when nodes become reachable.

Parameters:

node_list - The list of nodes to be reachable
action_cb - Callback called when a new host is reachable
interval - The earliest time to retry

_MaybeInstanceStartup(opts, inst_map, nodes_online, _instance_start_fn=_InstanceStart)

source code

Start the instances conditional based on node_states.

Parameters:

opts - The command line options selected by the user
inst_map - A dict of inst -> nodes mapping
nodes_online - A list of nodes online
_instance_start_fn - Callback to start instances (unittest use only)

Returns:

Success of the operation on all instances

_EpoOn(opts, full_node_list, node_list, inst_map)

source code

Does the actual power on.

Parameters:

opts - The command line options selected by the user
full_node_list - All nodes to operate on (includes nodes not supporting OOB)
node_list - The list of nodes to operate on (all need to support OOB)
inst_map - A dict of inst -> nodes mapping

Returns:

The desired exit status

_EpoOff(opts, node_list, inst_map)

source code

Does the actual power off.

Parameters:

opts - The command line options selected by the user
node_list - The list of nodes to operate on (all need to support OOB)
inst_map - A dict of inst -> nodes mapping

Returns:

The desired exit status

Epo(opts, args)

source code

EPO operations.

Parameters:

opts - the command line options selected by the user
args (list) - should contain only one element, the subcommand

Returns: int

the desired exit code

Variables Details

[hide private]

ON_OPT

Value:

cli_option("--on", default= False, action= "store_true", dest= "on", h
elp= "Recover from an EPO")

GROUPS_OPT

Value:

cli_option("--groups", default= False, action= "store_true", dest= "gr
oups", help= "Arguments are node groups instead of nodes")

commands

Value:

{"init":(InitCluster, [ArgHost(min= 1, max= 1)], [BACKEND_OPT, CP_SIZE
_OPT, ENABLED_HV_OPT, GLOBAL_FILEDIR_OPT, HVLIST_OPT, MAC_PREFIX_OPT, 
MASTER_NETDEV_OPT, NIC_PARAMS_OPT, NOLVM_STORAGE_OPT, NOMODIFY_ETCHOST
S_OPT, NOMODIFY_SSH_SETUP_OPT, SECONDARY_IP_OPT, VG_NAME_OPT, MAINTAIN
_NODE_HEALTH_OPT, UIDPOOL_OPT, DRBD_HELPER_OPT, NODRBD_STORAGE_OPT, DE
FAULT_IALLOCATOR_OPT, PRIMARY_IP_VERSION_OPT, PREALLOC_WIPE_DISKS_OPT,
 NODE_PARAMS_OPT, GLOBAL_SHARED_FILEDIR_OPT], "[opts...] <cluster_name
>", "Initialises a new cluster configuration"), "destroy":(DestroyClus
...