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authorDan Prince <dprince@redhat.com>2017-03-30 13:24:55 -0400
committerMartin André <m.andre@redhat.com>2017-05-19 10:54:03 +0200
commit6b17c04e364bc5827ded3e4357f95cb007f73590 (patch)
treef1b33f954874c2fef45b86bd19c26c82163fbf0c /manifests
parent484a744461d361a235b72d4fc0259345fe7eb519 (diff)
Switch to overlay2 driver for storage
This patch switches the default to the overlay2 storage driver and see if it helps performance. Background: The loopback driver is not recommended for production. Most other docker storage backends require extra disks (or partitions) which we don't have on the root disk. Overlay seems to make the most since for TripleO upgrades where we intend to update in-place installations to use docker. Co-Authored-By: Martin André <m.andre@redhat.com> Change-Id: I6896a9b3e9dc3e269bf5b0dc753bf8c985482daf
Diffstat (limited to 'manifests')
-rw-r--r--manifests/profile/base/docker.pp35
1 files changed, 33 insertions, 2 deletions
diff --git a/manifests/profile/base/docker.pp b/manifests/profile/base/docker.pp
index d035f6a..bc784b5 100644
--- a/manifests/profile/base/docker.pp
+++ b/manifests/profile/base/docker.pp
@@ -32,6 +32,18 @@
# Configure a registry-mirror in the /etc/docker/daemon.json file.
# (defaults to false)
#
+# [*docker_options*]
+# OPTIONS that are used to startup the docker service. NOTE:
+# --selinux-enabled is dropped due to recommendations here:
+# https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/7.2_Release_Notes/technology-preview-file_systems.html
+# Defaults to '--log-driver=journald --signature-verification=false'
+#
+# [*configure_storage*]
+# Boolean. Whether to configure a docker storage backend. Defaults to true.
+#
+# [*storage_options*]
+# Storage options to configure. Defaults to '-s overlay2'
+#
# [*step*]
# step defaults to hiera('step')
#
@@ -39,6 +51,9 @@ class tripleo::profile::base::docker (
$docker_namespace = undef,
$insecure_registry = false,
$registry_mirror = false,
+ $docker_options = '--log-driver=journald --signature-verification=false',
+ $configure_storage = true,
+ $storage_options = '-s overlay2',
$step = hiera('step'),
) {
if $step >= 1 {
@@ -57,9 +72,11 @@ class tripleo::profile::base::docker (
fail('You must provide a $docker_namespace in order to configure insecure registry')
}
$namespace = strip($docker_namespace.split('/')[0])
- $changes = [ "set INSECURE_REGISTRY '\"--insecure-registry ${namespace}\"'", ]
+ $changes = [ "set INSECURE_REGISTRY '\"--insecure-registry ${namespace}\"'",
+ "set OPTIONS '\"${docker_options}\"'" ]
} else {
- $changes = [ 'rm INSECURE_REGISTRY', ]
+ $changes = [ 'rm INSECURE_REGISTRY',
+ "set OPTIONS '\"${docker_options}\"'" ]
}
augeas { 'docker-sysconfig':
@@ -95,6 +112,20 @@ class tripleo::profile::base::docker (
notify => Service['docker'],
require => File['/etc/docker/daemon.json'],
}
+ if $configure_storage {
+ if $storage_options == undef {
+ fail('You must provide a $storage_options in order to configure storage')
+ }
+ $storage_changes = [ "set DOCKER_STORAGE_OPTIONS '\" ${storage_options}\"'", ]
+ } else {
+ $storage_changes = [ 'rm DOCKER_STORAGE_OPTIONS', ]
+ }
+
+ augeas { 'docker-sysconfig-storage':
+ lens => 'Shellvars.lns',
+ incl => '/etc/sysconfig/docker-storage',
+ changes => $storage_changes,
+ }
}
}