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b2e32e6e3f
This adds a setting that controls whether to include the Zulip default streaming replication configuration in the postgres configuration file.
92 lines
3.4 KiB
Puppet
92 lines
3.4 KiB
Puppet
# postgres_appdb_tuned extends postgres_appdb_base by automatically
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# generating tuned database configuration.
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class zulip::postgres_appdb_tuned {
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include zulip::postgres_appdb_base
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if $release_name == "trusty" {
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# tools for database setup
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$postgres_appdb_tuned_packages = ["pgtune"]
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package { $postgres_appdb_tuned_packages: ensure => "installed" }
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file { "/etc/postgresql/${zulip::base::postgres_version}/main/postgresql.conf.template":
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require => Package["postgresql-${zulip::base::postgres_version}"],
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ensure => file,
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owner => "postgres",
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group => "postgres",
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mode => 644,
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content => template("zulip/postgresql/${zulip::base::postgres_version}/postgresql.conf.template.erb"),
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}
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# We can't use the built-in $memorysize fact because it's a string with human-readable units
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$total_memory = regsubst(file('/proc/meminfo'), '^.*MemTotal:\s*(\d+) kB.*$', '\1', 'M') * 1024
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$half_memory = $total_memory / 2
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$half_memory_pages = $half_memory / 4096
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file {'/etc/sysctl.d/40-postgresql.conf':
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ensure => file,
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owner => 'root',
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group => 'root',
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mode => 644,
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content =>
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"kernel.shmall = $half_memory_pages
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kernel.shmmax = $half_memory
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# These are the defaults on newer kernels
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vm.dirty_ratio = 10
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vm.dirty_background_ratio = 5
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"
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}
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exec { "sysctl_p":
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command => "/sbin/sysctl -p /etc/sysctl.d/40-postgresql.conf",
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subscribe => File['/etc/sysctl.d/40-postgresql.conf'],
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refreshonly => true,
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}
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exec { 'pgtune':
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require => Package["pgtune"],
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# Let Postgres use half the memory on the machine
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command => "pgtune -T Web -M $half_memory -i /etc/postgresql/${zulip::base::postgres_version}/main/postgresql.conf.template -o /etc/postgresql/${zulip::base::postgres_version}/main/postgresql.conf",
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refreshonly => true,
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subscribe => File["/etc/postgresql/${zulip::base::postgres_version}/main/postgresql.conf.template"]
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}
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exec { "pg_ctlcluster ${zulip::base::postgres_version} main restart":
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require => Exec["sysctl_p"],
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refreshonly => true,
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subscribe => [ Exec['pgtune'], File['/etc/sysctl.d/40-postgresql.conf'] ]
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}
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} else {
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# We can't use the built-in $memorysize fact because it's a string with human-readable units
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$total_memory = regsubst(file('/proc/meminfo'), '^.*MemTotal:\s*(\d+) kB.*$', '\1', 'M') * 1024
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$half_memory = $total_memory / 2
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$half_memory_pages = $half_memory / 4096
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$total_memory_mb = $total_memory / 1024 / 1024
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$work_mem = $total_memory_mb / 512
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$shared_buffers = $total_memory_mb / 8
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$effective_cache_size = $total_memory_mb * 10 / 32
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$maintenance_work_mem = $total_memory_mb / 32
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$random_page_cost = zulipconf("postgresql", "random_page_cost", undef)
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$effective_io_concurrency = zulipconf("postgresql", "effective_io_concurrency", undef)
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$replication = zulipconf("postgresql", "replication", undef)
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file { "/etc/postgresql/${zulip::base::postgres_version}/main/postgresql.conf":
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require => Package["postgresql-${zulip::base::postgres_version}"],
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ensure => file,
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owner => "postgres",
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group => "postgres",
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mode => 644,
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content => template("zulip/postgresql/${zulip::base::postgres_version}/postgresql.conf.template.erb"),
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}
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exec { "pg_ctlcluster ${zulip::base::postgres_version} main restart":
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require => Package["postgresql-${zulip::base::postgres_version}"],
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refreshonly => true,
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subscribe => [ File["/etc/postgresql/${zulip::base::postgres_version}/main/postgresql.conf"] ]
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}
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}
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}
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