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open-nomad
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10726 Commits

Author SHA1 Message Date
Fabian Holler e6af051c93 fix: disable swap for executor_linux allocations 
A comment in the nomad source code states that swapping for
executor_linux allocations is disabled but it wasn't.

Nomad wrote -1 to the memsw.limit_in_bytes cgroup file to disable
swapping.
This has the following problems:

1.) Writing -1 to the file does not disable swapping. It sets
    the limit for memory and swap to unlimited.
2.) On common Linux distributions like Ubuntu 16.04 LTS the
    memsw.limit_in_bytes cgroup file does not exist by default.
    The memsw.limit_in_bytes file only exist if the Linux kernel is
    build with CONFIG_MEMCG_SWAP=yes and either
    CONFIG_MEMCG_SWAP_ENABLED=yes or when the kernel parameter
    swapaccount=1 is passed during boot.
    Most Linux distributions disable swap accounting by default because
    of higher memory usage.
    Nomad silently ignores if writing to the memsw.limit_in_bytes file
    fails. The allocation succeeds, no message is logged to notify the
    user.

To ensure that disabling swap works on common Linux kernels, disable
swapping by writing 0 to the memory.swappiness file.
Using the memory.swappiness file only requires that the kernel is
compiled with CONFIG_MEMCG=yes. This is the default in common Linux
kernels.
 2018-03-13 10:52:50 +01:00
Alex Dadgar 93b0e42e6c Fix merge change 2018-03-12 16:25:49 -07:00
Alex Dadgar 09e81c5d25 changelog 2018-03-12 14:47:23 -07:00
Alex Dadgar 4844317cc2
Merge pull request #3890 from hashicorp/b-heartbeat 
Heartbeat improvements and handling failures during establishing leadership
 2018-03-12 14:41:59 -07:00
Michael Schurter 285e5a9e0b
Merge pull request #3966 from hashicorp/b-existent 
non-Existent -> nonexistent
 2018-03-12 13:51:36 -07:00
Michael Schurter 7dd7fbcda2 non-Existent -> nonexistent 
Reverting from #3963

https://www.merriam-webster.com/dictionary/existent
 2018-03-12 11:59:33 -07:00
Michael Schurter ec381ee705 Revert spelling corrections in generated code 2018-03-12 11:19:29 -07:00
Alex Dadgar 3d4e3343ae
Merge pull request #3963 from jsoref/spelling 
Spelling
 2018-03-12 11:13:17 -07:00
Preetha ae9797b192
Merge pull request #3965 from hashicorp/fix_vendoring_ginkgo 
Add missing deps needed for ginkgo
 2018-03-12 10:51:12 -05:00
Preetha Appan df0d3358bc
Add missing deps needed for ginkgo 2018-03-12 10:30:56 -05:00
Josh Soref cf134ec34b spelling: website 2018-03-11 19:17:53 +00:00
Josh Soref 18c5659474 spelling: version 2018-03-11 19:13:25 +00:00
Josh Soref 6222bd564e spelling: verify 2018-03-11 19:13:32 +00:00
Josh Soref 920ccf96d2 spelling: variable 2018-03-11 19:13:11 +00:00
Josh Soref 46a4cafe65 spelling: usually 2018-03-11 19:12:06 +00:00
Josh Soref 0ced826ed3 spelling: usage 2018-03-11 19:11:59 +00:00
Josh Soref 001f664ab1 spelling: update 2018-03-11 17:44:04 +00:00
Josh Soref e2167ef047 spelling: unmarshal 2018-03-11 19:07:44 +00:00
Josh Soref 0790a58fb7 spelling: unknown 2018-03-11 19:07:31 +00:00
Josh Soref 1359fd2c3d spelling: unexpected 2018-03-11 19:08:07 +00:00
Josh Soref eda5cbb2a6 spelling: triggered 2018-03-11 19:06:15 +00:00
Josh Soref 173ce63fe9 spelling: transition 2018-03-11 19:06:05 +00:00
Josh Soref 782c704de6 spelling: thresholds 2018-03-11 19:03:47 +00:00
Josh Soref ac6d3767da spelling: terminated 2018-03-11 19:01:49 +00:00
Josh Soref 2dda6abab9 spelling: templates 2018-03-11 19:01:39 +00:00
Josh Soref e0f6a33fe5 spelling: system 2018-03-11 19:01:19 +00:00
Josh Soref 42d7f19861 spelling: supports 2018-03-11 19:00:11 +00:00
Josh Soref c4c4645f46 spelling: summary 2018-03-11 19:00:07 +00:00
Josh Soref c808dc3095 spelling: submitted 2018-03-11 18:59:27 +00:00
Josh Soref a89e1b8395 spelling: strategy 2018-03-11 18:58:19 +00:00
Josh Soref 6e1244b6c1 spelling: significantly 2018-03-11 18:56:45 +00:00
Josh Soref 8978caea28 spelling: shutdown 2018-03-11 18:55:49 +00:00
Josh Soref 8d191c9273 spelling: severity 2018-03-11 18:53:52 +00:00
Josh Soref 05305afcd9 spelling: services 2018-03-11 18:53:58 +00:00
Josh Soref a79eccaa58 spelling: service 2018-03-11 18:53:47 +00:00
Josh Soref 8149694f3a spelling: server 2018-03-11 18:55:30 +00:00
Josh Soref 3787d8141e spelling: serialize 2018-03-11 18:53:39 +00:00
Josh Soref e37626561c spelling: semantics 2018-03-11 19:00:26 +00:00
Josh Soref e4639ac62f spelling: secrets 2018-03-11 18:53:26 +00:00
Josh Soref 6aa0a05998 spelling: scheduling 2018-03-11 18:53:11 +00:00
Josh Soref f28efbbc79 spelling: sanitize 2018-03-11 18:52:59 +00:00
Josh Soref cec45c6bc8 spelling: safety 2018-03-11 18:52:54 +00:00
Josh Soref f78d5685ee spelling: routines 2018-03-11 18:52:35 +00:00
Josh Soref 026f885087 spelling: rolling 2018-03-11 18:52:29 +00:00
Josh Soref bed09b97d4 spelling: retrieving 2018-03-11 18:51:51 +00:00
Josh Soref de9d0c7180 spelling: retrieved 2018-03-11 18:51:40 +00:00
Josh Soref 3140a5dcf9 spelling: response 2018-03-11 18:48:24 +00:00
Josh Soref e949d23e1b spelling: resource 2018-03-11 18:51:03 +00:00
Josh Soref 4e40338cfa spelling: rescheduling 2018-03-11 18:40:32 +00:00
Josh Soref fdd7b5ee9d spelling: reschedule 2018-03-11 18:50:50 +00:00