sysctl | Development repository for the sysctl cookbook | Infrastructure Automation library

by Sous-Chefs-Boneyard Ruby Version: v0.9.0 License: Apache-2.0

X-Ray Key Features Code Snippets(2)Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | sysctl Summary

sysctl is a Ruby library typically used in Devops, Infrastructure Automation, Chef applications. sysctl has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

The sysctl resource from this cookbook is now shipping as part of Chef 14. With the inclusion of this resource into Chef itself we are now deprecating this cookbook. It will continue to function for Chef 13 users, but will not be updated.

Support

Quality

Security

License

Reuse

Support

sysctl has a low active ecosystem.

It has 43 star(s) with 82 fork(s). There are 16 watchers for this library.

It had no major release in the last 12 months.

There are 0 open issues and 53 have been closed. On average issues are closed in 86 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of sysctl is v0.9.0

Quality

sysctl has 0 bugs and 0 code smells.

Security

sysctl has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

sysctl code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

sysctl is licensed under the Apache-2.0 License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

sysctl releases are available to install and integrate.

Installation instructions are not available. Examples and code snippets are available.

sysctl saves you 256 person hours of effort in developing the same functionality from scratch.

It has 621 lines of code, 7 functions and 28 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

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sysctl Key Features

No Key Features are available at this moment for sysctl.

sysctl Examples and Code Snippets

sysctl_param

Ruby

Lines of Code : 17

License : Permissive (Apache-2.0)

Copy

# metadata.rb

name 'my_app'
version '0.1.0'
depends 'sysctl'

# recipes/default.rb
sysctl_param 'vm.swappiness' do
  value 20
end

sysctl_param 'net.ipv4.tcp_fin_timeout' do
  value 30
  action :remove
end

sysctl_param 'kernel.randomize_va_space' d

Warning: Depreciated Cookbook,Development,Running tests

Ruby

Lines of Code : 5

License : Permissive (Apache-2.0)

Copy

# Run the unit & lint tests
chef exec delivery local all

# Run the integration suites
kitchen test

Community Discussions

Trending Discussions on sysctl

Why Python native on M1 Max is greatly slower than Python on old Intel i5?

fork/exec : operation not permitted Ubuntu 20.04

EADDRNOTAVAIL even after using IP_FREEBIND?

Unable to read Pillar having array with dictionary structure using Jinja

sysctl() on dev.cpu.0.freq_levels

asyncprofiler malloc undefined category

Unable to start minikube on Mac M1 with docker

Why does declaring a 2D array of sufficient size cause a segfault on Linux but not macOS?

Can't configure Tiva C with Tivaware Drivers

Not working Read a switch and write it to the LED on board EK-TM4C123GXL?

QUESTION

Why Python native on M1 Max is greatly slower than Python on old Intel i5?

Asked 2022-Mar-29 at 03:35

I just got my new MacBook Pro with M1 Max chip and am setting up Python. I've tried several combinational settings to test speed - now I'm quite confused. First put my questions here:

Why python run natively on M1 Max is greatly (~100%) slower than on my old MacBook Pro 2016 with Intel i5?
On M1 Max, why there isn't significant speed difference between native run (by miniforge) and run via Rosetta (by anaconda) - which is supposed to be slower ~20%?
On M1 Max and native run, why there isn't significant speed difference between conda installed Numpy and TensorFlow installed Numpy - which is supposed to be faster?
On M1 Max, why run in PyCharm IDE is constantly slower ~20% than run from terminal, which doesn't happen on my old Intel Mac.

Evidence supporting my questions is as follows:

Here are the settings I've tried:

1. Python installed by

Miniforge-arm64, so that python is natively run on M1 Max Chip. (Check from Activity Monitor, Kind of python process is Apple).
Anaconda. Then python is run via Rosseta. (Check from Activity Monitor, Kind of python process is Intel).

2. Numpy installed by

conda install numpy: numpy from original conda-forge channel, or pre-installed with anaconda.
Apple-TensorFlow: with python installed by miniforge, I directly install tensorflow, and numpy will also be installed. It's said that, numpy installed in this way is optimized for Apple M1 and will be faster. Here is the installation commands:

...

ANSWER

Answered 2021-Dec-06 at 05:53

Possible Cause: Different BLAS Libraries

Since the benchmark is running linear algebra routines, what is likely being tested here are the BLAS implementations. A default Anaconda distribution for osx-64 platform is going to come with Intel's MKL implementation; the osx-arm64 platform only has the generic Netlib BLAS and the OpenBLAS implementation options.

For me (MacOS w/ Intel i9), I get the following benchmark results:

BLAS Implmentation Mean Timing (s) mkl 0.95932 blis 1.72059 openblas 2.17023 netlib 5.72782

So, I suspect the old MBP had MKL installed, and the M1 system is installing either Netlib or OpenBLAS. Maybe try figuring out whether Netlib or OpenBLAS are faster on M1, and keep the faster one.

Specifying BLAS Implementation

Here are specifically the different environments I tested:

Source https://stackoverflow.com/questions/70240506

QUESTION

fork/exec : operation not permitted Ubuntu 20.04

Asked 2022-Feb-12 at 14:45

When trying to debug go application I get the following similar error messages.
I initially tried debugging simple golang program with the following vscode launch.json:

...

ANSWER

Answered 2022-Feb-12 at 14:45

I have figured out that setting kernel.yama.ptrace_scope = 0 did not work for some reason, however echo 0 > /proc/sys/kernel/yama/ptrace_scope helped

Source https://stackoverflow.com/questions/70941103

QUESTION

EADDRNOTAVAIL even after using IP_FREEBIND?

Asked 2022-Feb-02 at 16:48

I was under the impression that under Linux you could bind to a non-local address as long as you set the IP_FREEBIND socket option, but that's not the behavior I'm seeing:

...

ANSWER

Answered 2022-Feb-02 at 16:48

Unfortunately, it seems that it is not possible to bind a raw IP socket to a non-local, non-broadcast and non-multicast address, regardless of IP_FREEBIND. Since I see inet_addr("w.x.y.z") in your strace output, I assume that this is exactly what you're trying to do and w.x.y.z is a non-local unicast address, thus your bind syscall fails.

This seems in accordance with man 7 raw:

A raw socket can be bound to a specific local address using the bind(2) call. If it isn't bound, all packets with the specified IP protocol are received. In addition, a raw socket can be bound to a specific network device using SO_BINDTODEVICE; see socket(7).

Indeed, looking at the kernel source code, in raw_bind() we can see the following check:

Source https://stackoverflow.com/questions/70329671

QUESTION

Unable to read Pillar having array with dictionary structure using Jinja

Asked 2022-Feb-02 at 12:53

I am trying to read an array of dictionary present in my salt pillar file inside my state sls file, but unable to read.

...

ANSWER

Answered 2021-Oct-01 at 13:15

The ID of the states being run in context of an execution should be unique.

As you are iterating over an array of dictionaries having two elements, it creates two state IDs as print my data, which is not allowed. To avoid this, we need to use some element of the dict in the ID itself so that it is unique.

Example:

Source https://stackoverflow.com/questions/69406235

QUESTION

sysctl() on dev.cpu.0.freq_levels

Asked 2022-Jan-29 at 18:33

On a FreeBSD v13 box, I call sysctl() to obtain dev.cpu.0.freq_levels which then returns:

...

ANSWER

Answered 2022-Jan-29 at 18:33

A frequency 1 MHz higher than the maximum frequency of the CPU indicates the Intel(R) Turbo Boost(TM) feature.

Source https://stackoverflow.com/questions/70900921

QUESTION

asyncprofiler malloc undefined category

Asked 2022-Jan-29 at 08:03

I have set up and using https://github.com/jvm-profiling-tools/async-profiler which is extremely useful but I have a strange thing I cannot explain.

My setup is exactly where multiple presentation showed it can help:

AKS kubernetes cluster with a nodepool
A pod deployed on one node
Within the container I have set up openjdk-11 with the debuginfo
The profiling setup is a simple ./profiler start -e malloc PID
Since I'm in a virtualised environment profiling works, the only warning I get is
...

ANSWER

Answered 2022-Jan-28 at 01:02

Container environment is not related here.

It seems like libc (where malloc implementation resides) on your system is compiled without frame pointers. So the standard stack walking mechanism in the kernel is unable to find a parent of malloc frame.

I've recently implemented an alternative stack walking algorithm that relies on DWARF unwinding information. New version has not been yet released, but you may try to build it from sources. Or, for your convenience, I prepared the new build here: async-profiler-2.6-dwarf-linux-x64.tar.gz

Then add --cstack dwarf option, and all malloc stack traces should be in place.

Source https://stackoverflow.com/questions/70860682

QUESTION

Unable to start minikube on Mac M1 with docker

Asked 2022-Jan-19 at 12:43

I'm trying to start minikube on a Mac M1 (macOs Monterey V12.0.1) after installing minikube with homebrew (brew install minikube) but I am getting an error after running minikube start.

The error in the logs is this one:

...

ANSWER

Answered 2021-Nov-29 at 20:06

I was able to find the solution to my problem, although, I'm not really sure what was the main issue, it seems that it was related to old configurations in the .minikube folder in the users' home directory.

To fix it, first I had to enabled Kubernetes in docker desktop, and then I had to stop and delete minikube cluster, and finally delete the directory. Then running the command again was successful.

To fix:

Source https://stackoverflow.com/questions/70160392

QUESTION

Why does declaring a 2D array of sufficient size cause a segfault on Linux but not macOS?

Asked 2022-Jan-11 at 09:07

Problem

I'm trying to declare a large 2D Array (a.k.a. matrix) in C / C++, but it's crashing with segfault only on Linux. The Linux system has much more RAM installed than the macOS laptop, yet it only crashes on the Linux system.

My question is: Why does this crash only on Linux, but not macOS?

Here is a small program to reproduce the issue:

...

ANSWER

Answered 2022-Jan-11 at 08:43

Although ISO C++ does not support variable-length arrays, you seem to be using a compiler which supports them as an extension.

In the line

Source https://stackoverflow.com/questions/70663430

QUESTION

Can't configure Tiva C with Tivaware Drivers

Asked 2022-Jan-01 at 21:17

I am trying to use Tivaware Drivers for the first time with Tiva C TM4C123GH6PM.

I read the System Control driver and GPIO driver to know which API I want for my Program.

I am trying to configure the clock to use main clock of the system, then enable (PORT A, Pin 7) to use the RED LED Attached to it.

But the code is not working.

Please help me.

...

ANSWER

Answered 2022-Jan-01 at 21:17

First, use one of the sample applications (examples/bilinky) by following the steps specified in the document I shared in the references section; in this way, you will have tested both the hardware and the software. You will see that properties such as port clock configuration are defined in the startup_css.c file; take the data in this file as an example, as these types of features are common to development boards.

References

Getting Started with TivaWare™ for C Series

Source https://stackoverflow.com/questions/70551807

QUESTION

Not working Read a switch and write it to the LED on board EK-TM4C123GXL?

Asked 2021-Dec-30 at 17:05

TI Tiva Arm board EK-TM4C123GXL unable to run the following program. Need help debugging, Its textbook program , Book Link : http://www.microdigitaled.com/ARM/TI_ARM_books.htm

...

ANSWER

Answered 2021-Dec-30 at 17:05

Works after reverting back the compiler to v5. http://www.microdigitaled.com/commonMaterials/compiler%20version.pdf

Source https://stackoverflow.com/questions/70526389

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install sysctl

You can download it from GitHub.
On a UNIX-like operating system, using your system’s package manager is easiest. However, the packaged Ruby version may not be the newest one. There is also an installer for Windows. Managers help you to switch between multiple Ruby versions on your system. Installers can be used to install a specific or multiple Ruby versions. Please refer ruby-lang.org for more information.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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