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# @summary
# managers a Docker Swarm Mode cluster
#
# @param ensure
# This ensures that the cluster is present or not.
# Note this forcefully removes a node from the cluster. Make sure all worker nodes
# have been removed before managers
#
# @param init
# This creates the first worker node for a new cluster.
# Set init to true to create a new cluster
#
# @param join
# This adds either a worker or manger node to the cluster.
# The role of the node is defined by the join token.
# Set to true to join the cluster
#
# @param advertise_addr
# The address that your node will advertise to the cluster for raft.
# On multihomed servers this flag must be passed
#
# @param autolock
# Enable manager autolocking (requiring an unlock key to start a stopped manager)
#
# @param cert_expiry
# Validity period for node certificates (ns|us|ms|s|m|h) (default 2160h0m0s)
#
# @param default_addr_pool
# Array of default subnet pools for global scope networks (['30.30.0.0/16','40.40.0.0/16'])
#
# @param default_addr_pool_mask_length
# Default subnet pools mask length for default-addr-pools (CIDR block number)
#
# @param dispatcher_heartbeat
# Dispatcher heartbeat period (ns|us|ms|s|m|h) (default 5s)
#
# @param external_ca
# Specifications of one or more certificate signing endpoints
#
# @param force_new_cluster
# Force create a new cluster from current state
#
# @param listen_addr
# The address that your node will listen to the cluster for raft.
# On multihomed servers this flag must be passed
#
# @param max_snapshots
# Number of additional Raft snapshots to retain
#
# @param snapshot_interval
# Number of log entries between Raft snapshots (default 10000)
#
# @param token
# The authentication token to join the cluster. The token also defines the type of
# node (worker or manager)
#
# @param manager_ip
# The ip address of a manager node to join the cluster.
#
define docker::swarm(
Optional[Enum[present,absent]] $ensure = 'present',
Optional[Boolean] $init = false,
Optional[Boolean] $join = false,
Optional[String] $advertise_addr = undef,
Optional[Boolean] $autolock = false,
Optional[String] $cert_expiry = undef,
Optional[Array] $default_addr_pool = undef,
Optional[String] $default_addr_pool_mask_length = undef,
Optional[String] $dispatcher_heartbeat = undef,
Optional[String] $external_ca = undef,
Optional[Boolean] $force_new_cluster = false,
Optional[String] $listen_addr = undef,
Optional[String] $max_snapshots = undef,
Optional[String] $snapshot_interval = undef,
Optional[String] $token = undef,
Optional[String] $manager_ip = undef,
) {
include docker::params
if $facts['os']['family'] == 'windows' {
$exec_environment = "PATH=${::docker_program_files_path}/Docker/"
$exec_path = [ "${::docker_program_files_path}/Docker/", ]
$exec_timeout = 3000
$exec_provider = 'powershell'
$unless_init = '$info = docker info | select-string -pattern "Swarm: active"
if ($info -eq $null) { Exit 1 } else { Exit 0 }'
$unless_join = '$info = docker info | select-string -pattern "Swarm: active"
if ($info -eq $null) { Exit 1 } else { Exit 0 }'
$onlyif_leave = '$info = docker info | select-string -pattern "Swarm: active"
if ($info -eq $null) { Exit 1 } else { Exit 0 }'
} else {
$exec_environment = 'HOME=/root'
$exec_path = [ '/bin', '/usr/bin', ]
$exec_timeout = 0
$exec_provider = undef
$unless_init = 'docker info | grep -w "Swarm: active"'
$unless_join = 'docker info | grep -w "Swarm: active"'
$onlyif_leave = 'docker info | grep -w "Swarm: active"'
}
$docker_command = "${docker::params::docker_command} swarm"
if $init {
$docker_swarm_init_flags = docker_swarm_init_flags(
{
init => $init,
advertise_addr => $advertise_addr,
autolock => $autolock,
cert_expiry => $cert_expiry,
dispatcher_heartbeat => $dispatcher_heartbeat,
default_addr_pool => $default_addr_pool,
default_addr_pool_mask_length => $default_addr_pool_mask_length,
external_ca => $external_ca,
force_new_cluster => $force_new_cluster,
listen_addr => $listen_addr,
max_snapshots => $max_snapshots,
snapshot_interval => $snapshot_interval,
}
)
$exec_init = "${docker_command} ${docker_swarm_init_flags}"
exec { 'Swarm init':
command => $exec_init,
environment => $exec_environment,
path => $exec_path,
provider => $exec_provider,
timeout => $exec_timeout,
unless => $unless_init,
}
}
if $join {
$docker_swarm_join_flags = docker_swarm_join_flags(
{
join => $join,
advertise_addr => $advertise_addr,
listen_addr => $listen_addr,
token => $token,
}
)
$exec_join = "${docker_command} ${docker_swarm_join_flags} ${manager_ip}"
exec { 'Swarm join':
command => $exec_join,
environment => $exec_environment,
path => $exec_path,
provider => $exec_provider,
timeout => $exec_timeout,
unless => $unless_join,
}
}
if $ensure == 'absent' {
exec { 'Leave swarm':
command => 'docker swarm leave --force',
onlyif => $onlyif_leave,
path => $exec_path,
provider => $exec_provider,
}
}
}

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