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new 633b1b5 Renamed agent flag `--default_shm_size`.
633b1b5 is described below
commit 633b1b5d4ef3f08b0abf057a3651f34116e1e45f
Author: Qian Zhang <zhq527...@gmail.com>
AuthorDate: Mon Jul 15 23:46:20 2019 -0700
Renamed agent flag `--default_shm_size`.
Review: https://reviews.apache.org/r/71072/
---
docs/configuration/agent.md | 9 +++++----
docs/isolators/namespaces-ipc.md | 13 +++++++------
include/mesos/mesos.proto | 10 +++++-----
include/mesos/v1/mesos.proto | 10 +++++-----
src/slave/containerizer/mesos/isolators/namespaces/ipc.cpp | 4 ++--
src/slave/flags.cpp | 9 +++++----
src/slave/flags.hpp | 2 +-
src/tests/containerizer/isolator_tests.cpp | 6 +++---
8 files changed, 33 insertions(+), 30 deletions(-)
diff --git a/docs/configuration/agent.md b/docs/configuration/agent.md
index 2046bf2..325a37e 100644
--- a/docs/configuration/agent.md
+++ b/docs/configuration/agent.md
@@ -577,17 +577,18 @@ this role. (default: *)
</td>
</tr>
-<tr id="default_shm_size">
+<tr id="default_container_shm_size">
<td>
- --default_shm_size
+ --default_container_shm_size
</td>
<td>
The default size of the /dev/shm for the container which has its own
/dev/shm but does not specify the <code>shm_size</code> field in its
<code>LinuxInfo</code>. The format is [number][unit], number must be
a positive integer and unit can be B (bytes), KB (kilobytes), MB
-(megabytes), GB (gigabytes) or TB (terabytes). This flag will be
-ignored if the <code>namespaces/ipc</code> isolator is not enabled.
+(megabytes), GB (gigabytes) or TB (terabytes). Note that this flag is
+only relevant for the Mesos Containerizer and it will be ignored if
+the <code>namespaces/ipc</code> isolator is not enabled.
</td>
</tr>
diff --git a/docs/isolators/namespaces-ipc.md b/docs/isolators/namespaces-ipc.md
index 43ed842..4c978ec 100644
--- a/docs/isolators/namespaces-ipc.md
+++ b/docs/isolators/namespaces-ipc.md
@@ -48,9 +48,10 @@ agent's IPC namespace and /dev/shm, the container launch
will be rejected.
Framework users can specify the size of a container's /dev/shm in MB by
setting the `ContainerInfo.linux_info.shm_size` field, and operators can
specify
-the default size of /dev/shm via the agent flag `--default_shm_size`. So if the
-`ContainerInfo.linux_info.shm_size` field is not set, the size of container's
-/dev/shm will be value of the `--default_shm_size` agent flag, if that flag is
-not set too, the size of the /dev/shm will be half of the agent host RAM
-which is the default behavior of Linux. The `ContainerInfo.linux_info.shm_size`
-field will be ignored for the container which shares its parent's /dev/shm.
+the default size of /dev/shm via the agent flag `--default_container_shm_size`.
+So if the `ContainerInfo.linux_info.shm_size` field is not set, the size of
+container's /dev/shm will be value of the `--default_container_shm_size` agent
+flag, if that flag is not set too, the size of the /dev/shm will be half
+of the agent host RAM which is the default behavior of Linux. The
+`ContainerInfo.linux_info.shm_size` field will be ignored for the container
which
+shares its parent's /dev/shm.
diff --git a/include/mesos/mesos.proto b/include/mesos/mesos.proto
index 324f686..075c110 100644
--- a/include/mesos/mesos.proto
+++ b/include/mesos/mesos.proto
@@ -3320,11 +3320,11 @@ message LinuxInfo {
optional IpcMode ipc_mode = 6;
// Size of /dev/shm in MB. If not set, the size of the /dev/shm for container
- // will be value of the `--default_shm_size` agent flag, if that flag is not
- // set too, the size of the /dev/shm will be half of the host RAM which is
the
- // default behavior of Linux. This field will be ignored for the container
- // which shares /dev/shm from its parent and it will be also ignored for any
- // containers if the `namespaces/ipc` isolator is not enabled.
+ // will be value of the `--default_container_shm_size` agent flag, if that
+ // flag is not set too, the size of the /dev/shm will be half of the host RAM
+ // which is the default behavior of Linux. This field will be ignored for the
+ // container which shares /dev/shm from its parent and it will be also
ignored
+ // for any containers if the `namespaces/ipc` isolator is not enabled.
optional uint32 shm_size = 7;
}
diff --git a/include/mesos/v1/mesos.proto b/include/mesos/v1/mesos.proto
index aa9c525..0dcaee6 100644
--- a/include/mesos/v1/mesos.proto
+++ b/include/mesos/v1/mesos.proto
@@ -3309,11 +3309,11 @@ message LinuxInfo {
optional IpcMode ipc_mode = 6;
// Size of /dev/shm in MB. If not set, the size of the /dev/shm for container
- // will be value of the `--default_shm_size` agent flag, if that flag is not
- // set too, the size of the /dev/shm will be half of the host RAM which is
the
- // default behavior of Linux. This field will be ignored for the container
- // which shares /dev/shm from its parent and it will be also ignored for any
- // containers if the `namespaces/ipc` isolator is not enabled.
+ // will be value of the `--default_container_shm_size` agent flag, if that
+ // flag is not set too, the size of the /dev/shm will be half of the host RAM
+ // which is the default behavior of Linux. This field will be ignored for the
+ // container which shares /dev/shm from its parent and it will be also
ignored
+ // for any containers if the `namespaces/ipc` isolator is not enabled.
optional uint32 shm_size = 7;
}
diff --git a/src/slave/containerizer/mesos/isolators/namespaces/ipc.cpp
b/src/slave/containerizer/mesos/isolators/namespaces/ipc.cpp
index 9a98476..743d48d 100644
--- a/src/slave/containerizer/mesos/isolators/namespaces/ipc.cpp
+++ b/src/slave/containerizer/mesos/isolators/namespaces/ipc.cpp
@@ -121,8 +121,8 @@ Future<Option<ContainerLaunchInfo>>
NamespacesIPCIsolatorProcess::prepare(
if (containerConfig.container_info().linux_info().has_shm_size()) {
shmSize =
Megabytes(containerConfig.container_info().linux_info().shm_size());
- } else if (flags.default_shm_size.isSome()) {
- shmSize = flags.default_shm_size.get();
+ } else if (flags.default_container_shm_size.isSome()) {
+ shmSize = flags.default_container_shm_size.get();
}
}
diff --git a/src/slave/flags.cpp b/src/slave/flags.cpp
index b4e3eb9..08ec20b 100644
--- a/src/slave/flags.cpp
+++ b/src/slave/flags.cpp
@@ -763,14 +763,15 @@ mesos::internal::slave::Flags::Flags()
"This flag has the same syntax as `--effective_capabilities`."
);
- add(&Flags::default_shm_size,
- "default_shm_size",
+ add(&Flags::default_container_shm_size,
+ "default_container_shm_size",
"The default size of the /dev/shm for the container which has its own\n"
"/dev/shm but does not specify the `shm_size` field in its
`LinuxInfo`.\n"
"The format is [number][unit], number must be a positive integer and\n"
"unit can be B (bytes), KB (kilobytes), MB (megabytes), GB (gigabytes)\n"
- "or TB (terabytes). This flag will be ignored if the `namespaces/ipc`\n"
- "isolator is not enabled."
+ "or TB (terabytes). Note that this flag is only relevant for the Mesos\n"
+ "Containerizer and it will be ignored if the `namespaces/ipc` isolator\n"
+ "is not enabled."
);
add(&Flags::disallow_sharing_agent_ipc_namespace,
diff --git a/src/slave/flags.hpp b/src/slave/flags.hpp
index a10bf69..01834f4 100644
--- a/src/slave/flags.hpp
+++ b/src/slave/flags.hpp
@@ -124,7 +124,7 @@ public:
std::string systemd_runtime_directory;
Option<CapabilityInfo> effective_capabilities;
Option<CapabilityInfo> bounding_capabilities;
- Option<Bytes> default_shm_size;
+ Option<Bytes> default_container_shm_size;
bool disallow_sharing_agent_ipc_namespace;
bool disallow_sharing_agent_pid_namespace;
#endif
diff --git a/src/tests/containerizer/isolator_tests.cpp
b/src/tests/containerizer/isolator_tests.cpp
index a493a30..14feaed 100644
--- a/src/tests/containerizer/isolator_tests.cpp
+++ b/src/tests/containerizer/isolator_tests.cpp
@@ -77,7 +77,7 @@ public:
const string& isolation,
const Option<bool>& disallowSharingAgentPidNamespace = None(),
const Option<bool>& disallowSharingAgentIpcNamespace = None(),
- const Option<Bytes>& defaultShmSize = None())
+ const Option<Bytes>& defaultContainerShmSize = None())
{
slave::Flags flags = CreateSlaveFlags();
flags.image_providers = "docker";
@@ -93,7 +93,7 @@ public:
disallowSharingAgentIpcNamespace.get();
}
- flags.default_shm_size = defaultShmSize;
+ flags.default_container_shm_size = defaultContainerShmSize;
fetcher.reset(new Fetcher(flags));
@@ -774,7 +774,7 @@ TEST_F(NamespacesIsolatorTest, ROOT_ShareIPCNamespace)
// have its own IPC namespace and /dev/shm.
TEST_F(NamespacesIsolatorTest, ROOT_PrivateIPCNamespace)
{
- // Create containerizer with `--default_shm_size=64MB`.
+ // Create containerizer with `--default_container_shm_size=64MB`.
Try<Owned<MesosContainerizer>> containerizer = createContainerizer(
"filesystem/linux,namespaces/ipc",
None(),
