aports | Alpine packages build scripts | Continous Integration library
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[MIRROR] Alpine packages build scripts
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QUESTION
I'm trying to use the Alpine
image to take care of some Postgres
db creation/preparation.
Inside the container, I am running the following commands:
ANSWER
Answered 2020-Jan-22 at 14:55As mentioned in the documentation, Additional Extensions section:
When using the Alpine variants, any postgres extension not listed in postgres-contrib will need to be compiled in your own image (again, see github.com/appropriate/docker-postgis for a concrete example).
For debian based here is the docker image:
If you want to bundle Postgis with PostgreSQL Alpine image you have build it.
QUESTION
This is a template from some refactored code. drPin
and drPort
are both subclasses of drNode
. This code strips the const
qualification from the original contained pointer, and builds two new data structures based on it (the new data structures need a pointer to non-const in the map because the code that uses them isn't all properly const-restricted). Right now, the first argument is either a const std::vector
or a const std::vector
. To get the second to match, I'm currently copying it over to a vector of const drPort*
before calling: std::vector constPorts(aPorts.cbegin(), aPorts.cend());
ANSWER
Answered 2019-Nov-15 at 09:35You might do:
QUESTION
I have been trying to build an iso-image for alpine-linux inside a docker container following the standard instructions here however i seem to be unable to actually write the .iso back into the mounted volume due to libburn :
...ANSWER
Answered 2019-Mar-24 at 19:39You can easily create your own Alpine Linux ISO image using script alpine-make-vm-image.
Example:
QUESTION
I'm using Selenium for testing from Java code, it's started automatically with maven, when I run mvn verify
it uses gecko-driver
to start new firefox
instance for selenium:
ANSWER
Answered 2019-Aug-10 at 21:03As per Mozilla --headless flag is not supported in Firefox 52-esr.Headless flag was introduced in version 55 (for Linux) and 56 (Mac/Windows) . Please try on latest Firefox ESR release.
QUESTION
I'm having a hard time trying to debug OpenJDK java on Alpine Linux using gdb - was anyone successful in doing so?
When trying to debug java in gdb, for example, gdb java
and r -version
, it instantly fails with:
ANSWER
Answered 2019-Apr-14 at 13:20TL;DR: The issue is GDB lack of support to internal musl signals, reported in this gdb ticket.
A quick-and-dirty patched GDB is available here:
https://github.com/shaharv/alpine-gdb-builds/releases/tag/v0.1
Patch commit: shaharv/binutils-gdb@0ca9c66.
With the patch, the signal correctly identifies as SIGSYNCCALL.
Then, it could be masked using handle SIGSYNCCALL nostop noprint pass
.
Thankfully, I was able to come up with a workaround!
The gdb crash when debugging Alpine OpenJDK java could be walked around in the following manner:
- Start gdb
break os::init_2
- Run java with the desired command line arguments
- When the breakpoint is hit,
set MaxFDLimit=0
- Continue, and debug normally.
I've tested the workaround with OpenJDK 8 and 11 early access, so it is likely to work with OpenJDK 9 and 10 as well.
Unfortunately, the scope of this workaround is very limited:
- It only works if the JDK has debug symbols - whether it's a local debug OpenJDK build or using the
openjdk8-dbg
debug symbols package. - It is only suitable for command line gdb, and won't work with GDB frontends like CLion and Eclipse CDT.
Summary:
The crash occurs when the setrlimit
function is called inside gdb. musl's setrlimit
implementation signals threads with SIGSYNCCALL
, which is unsupported by gdb, and results with the Unknown signal
error. For avoiding the error, the relevant init code of JavaMain
is disabled by turning off the MaxFDLimit
global variable.
Full Explanation:
During JVM initialization, a JavaMain
native thread is created, and creates the VM. During VM creation, there's OS specific initialization in which setrlimit
is called. Here's the relevant part of the stack trace:
QUESTION
I'm aware Varnish logging isn't enabled by default and that it is enabled via varnishncsa
, there are many articles online on how to set it up but not with Linux Alpine. I see configurations for it here. But not sure any logging service runs by default.
Any help would be much appreciated. Many thanks
...ANSWER
Answered 2018-Mar-21 at 08:00To enable informative logs you need to start the following command:
QUESTION
Running pecl install xdebug
(or any other package) in an alpine 3.7 image build or container always results in
checking whether the C compiler works... no
Does someone know what's going on? Here is the related config.log:
...ANSWER
Answered 2018-Feb-03 at 11:57I believe you need install g++
library for it.
here mine method:
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