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puppet: Make memory computations work with Puppet 4.

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The actual approach for achieving this goal is to take our manual
parsing and move it to the central base.pp.
This commit is contained in:
Tim Abbott
2018-05-05 11:25:48 -07:00
parent 8a3522e8e4
commit cf90b9cec0
3 changed files with 12 additions and 12 deletions
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2
puppet/zulip/manifests/app_frontend_base.pp
View File

@@ -56,7 +56,7 @@ class zulip::app_frontend_base {
# This determines whether we run queue processors multithreaded or
# multiprocess. Multiprocess scales much better, but requires more
# RAM; we just auto-detect based on available system RAM.
$queues_multiprocess = $::memorysize_mb > 3500
$queues_multiprocess = $zulip::base::total_memory_mb > 3500
$queues = $zulip::base::normal_queues
if $queues_multiprocess {
$message_sender_default_processes = 4

5
puppet/zulip/manifests/base.pp
View File

@@ -73,6 +73,11 @@ class zulip::base {
'user_presence',
]
# We can't use the built-in $memorysize fact because it's a string with human-readable units
# Meanwhile $memorysize_mb is a string, and can't be compared with integers in puppet 4.
$total_memory = regsubst(file('/proc/meminfo'), '^.*MemTotal:\s*(\d+) kB.*$', '\1', 'M') * 1024
$total_memory_mb = $total_memory / 1024 / 1024
group { 'zulip':
ensure => present,
}

17
puppet/zulip/manifests/postgres_appdb_tuned.pp
View File

@@ -17,9 +17,7 @@ if $zulip::base::release_name == 'trusty' {
content => template("zulip/postgresql/${zulip::base::postgres_version}/postgresql.conf.template.erb"),
}
# We can't use the built-in $memorysize fact because it's a string with human-readable units
$total_memory = regsubst(file('/proc/meminfo'), '^.*MemTotal:\s*(\d+) kB.*$', '\1', 'M') * 1024
$half_memory = $total_memory / 2
$half_memory = $zulip::base::total_memory / 2
$half_memory_pages = $half_memory / 4096
file {'/etc/sysctl.d/40-postgresql.conf':
@@ -57,16 +55,13 @@ vm.dirty_background_ratio = 5
subscribe => [ Exec['pgtune'], File['/etc/sysctl.d/40-postgresql.conf'] ]
}
} else {
# We can't use the built-in $memorysize fact because it's a string with human-readable units
$total_memory = regsubst(file('/proc/meminfo'), '^.*MemTotal:\s*(\d+) kB.*$', '\1', 'M') * 1024
$half_memory = $total_memory / 2
$half_memory = $zulip::base::total_memory / 2
$half_memory_pages = $half_memory / 4096
$total_memory_mb = $total_memory / 1024 / 1024
$work_mem = $total_memory_mb / 512
$shared_buffers = $total_memory_mb / 8
$effective_cache_size = $total_memory_mb * 10 / 32
$maintenance_work_mem = $total_memory_mb / 32
$work_mem = $zulip::base::total_memory_mb / 512
$shared_buffers = $zulip::base::total_memory_mb / 8
$effective_cache_size = $zulip::base::total_memory_mb * 10 / 32
$maintenance_work_mem = $zulip::base::total_memory_mb / 32
$random_page_cost = zulipconf('postgresql', 'random_page_cost', undef)
$effective_io_concurrency = zulipconf('postgresql', 'effective_io_concurrency', undef)