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author | Michele Baldessari <michele@acksyn.org> | 2016-08-29 22:07:55 +0200 |
---|---|---|
committer | Emilien Macchi <emilien@redhat.com> | 2017-01-25 19:32:31 +0000 |
commit | f9efeb158261fbdad206ea072c4c628636c1a5f4 (patch) | |
tree | 6c4091dcf104cfd7215bbb60fc0c800ae4e05aea /manifests/profile/pacemaker/haproxy.pp | |
parent | 4a77eb9e987c924ed4e31719f4c27340c71ad41a (diff) |
Composable HA
This commit implements composable HA for the pacemaker profiles.
- Everytime a pacemaker resource gets included on a node,
that node will add a node cluster property with the name of the resource
(e.g. galera-role=true)
- Add a location rule constraint to force running the resource only
on the nodes that have that property
- We also make sure that any pacemaker resource/property creation has a
predefined number of tries (20 by default). The reason for this is
that within composable HA, it might be possible to get "older CIB"
errors when another node changed the CIB while we were doing an
operation on it. Simply retrying fixes this.
- Also make sure that we use the newly introduced
pacemaker::constraint::order class instead of the older
pacemaker::constraint::base class. The former uses the push_cib()
function and hence behaves correctly in case multiple nodes try
to modify the CIB at the same time.
Change-Id: I63da4f48da14534fd76265764569e76300534472
Depends-On: Ib931adaff43dbc16220a90fb509845178d696402
Depends-On: I8d78cc1b14f0e18e034b979a826bf3cdb0878bae
Depends-On: Iba1017c33b1cd4d56a3ee8824d851b38cfdbc2d3
Diffstat (limited to 'manifests/profile/pacemaker/haproxy.pp')
-rw-r--r-- | manifests/profile/pacemaker/haproxy.pp | 79 |
1 files changed, 59 insertions, 20 deletions
diff --git a/manifests/profile/pacemaker/haproxy.pp b/manifests/profile/pacemaker/haproxy.pp index b326761..f006f78 100644 --- a/manifests/profile/pacemaker/haproxy.pp +++ b/manifests/profile/pacemaker/haproxy.pp @@ -31,10 +31,15 @@ # for more details. # Defaults to hiera('step') # +# [*pcs_tries*] +# (Optional) The number of times pcs commands should be retried. +# Defaults to hiera('pcs_tries', 20) +# class tripleo::profile::pacemaker::haproxy ( $bootstrap_node = hiera('haproxy_short_bootstrap_node_name'), $enable_load_balancer = hiera('enable_load_balancer', true), $step = hiera('step'), + $pcs_tries = hiera('pcs_tries', 20), ) { include ::tripleo::profile::base::haproxy @@ -50,56 +55,90 @@ class tripleo::profile::pacemaker::haproxy ( } } - if $step >= 2 and $pacemaker_master and $enable_load_balancer { + if $step >= 2 and $enable_load_balancer { + pacemaker::property { 'haproxy-role-node-property': + property => 'haproxy-role', + value => true, + tries => $pcs_tries, + node => $::hostname, + } + if $pacemaker_master { + $haproxy_location_rule = { + resource_discovery => 'exclusive', + score => 0, + expression => ['haproxy-role eq true'], + } # FIXME: we should not have to access tripleo::haproxy class # parameters here to configure pacemaker VIPs. The configuration # of pacemaker VIPs could move into puppet-tripleo or we should # make use of less specific hiera parameters here for the settings. pacemaker::resource::service { 'haproxy': - op_params => 'start timeout=200s stop timeout=200s', - clone_params => true, + op_params => 'start timeout=200s stop timeout=200s', + clone_params => true, + location_rule => $haproxy_location_rule, + tries => $pcs_tries, + require => Pacemaker::Property['haproxy-role-node-property'], } $control_vip = hiera('controller_virtual_ip') tripleo::pacemaker::haproxy_with_vip { 'haproxy_and_control_vip': - vip_name => 'control', - ip_address => $control_vip, + vip_name => 'control', + ip_address => $control_vip, + location_rule => $haproxy_location_rule, + pcs_tries => $pcs_tries, + require => Pacemaker::Property['haproxy-role-node-property'], } $public_vip = hiera('public_virtual_ip') tripleo::pacemaker::haproxy_with_vip { 'haproxy_and_public_vip': - ensure => $public_vip and $public_vip != $control_vip, - vip_name => 'public', - ip_address => $public_vip, + ensure => $public_vip and $public_vip != $control_vip, + vip_name => 'public', + ip_address => $public_vip, + location_rule => $haproxy_location_rule, + pcs_tries => $pcs_tries, + require => Pacemaker::Property['haproxy-role-node-property'], } $redis_vip = hiera('redis_vip') tripleo::pacemaker::haproxy_with_vip { 'haproxy_and_redis_vip': - ensure => $redis_vip and $redis_vip != $control_vip, - vip_name => 'redis', - ip_address => $redis_vip, + ensure => $redis_vip and $redis_vip != $control_vip, + vip_name => 'redis', + ip_address => $redis_vip, + location_rule => $haproxy_location_rule, + pcs_tries => $pcs_tries, + require => Pacemaker::Property['haproxy-role-node-property'], } $internal_api_vip = hiera('internal_api_virtual_ip') tripleo::pacemaker::haproxy_with_vip { 'haproxy_and_internal_api_vip': - ensure => $internal_api_vip and $internal_api_vip != $control_vip, - vip_name => 'internal_api', - ip_address => $internal_api_vip, + ensure => $internal_api_vip and $internal_api_vip != $control_vip, + vip_name => 'internal_api', + ip_address => $internal_api_vip, + location_rule => $haproxy_location_rule, + pcs_tries => $pcs_tries, + require => Pacemaker::Property['haproxy-role-node-property'], } $storage_vip = hiera('storage_virtual_ip') tripleo::pacemaker::haproxy_with_vip { 'haproxy_and_storage_vip': - ensure => $storage_vip and $storage_vip != $control_vip, - vip_name => 'storage', - ip_address => $storage_vip, + ensure => $storage_vip and $storage_vip != $control_vip, + vip_name => 'storage', + ip_address => $storage_vip, + location_rule => $haproxy_location_rule, + pcs_tries => $pcs_tries, + require => Pacemaker::Property['haproxy-role-node-property'], } $storage_mgmt_vip = hiera('storage_mgmt_virtual_ip') tripleo::pacemaker::haproxy_with_vip { 'haproxy_and_storage_mgmt_vip': - ensure => $storage_mgmt_vip and $storage_mgmt_vip != $control_vip, - vip_name => 'storage_mgmt', - ip_address => $storage_mgmt_vip, + ensure => $storage_mgmt_vip and $storage_mgmt_vip != $control_vip, + vip_name => 'storage_mgmt', + ip_address => $storage_mgmt_vip, + location_rule => $haproxy_location_rule, + pcs_tries => $pcs_tries, + require => Pacemaker::Property['haproxy-role-node-property'], } + } } } |