Related
I am studying the upgrade of erlang applications based on this article.
But there is some problem when I execute rebar3 relup:
Option --relname is missing
hello#centos7-dev:~/relapp1 ((1.0.12))$ rebar3 relup
===> Verifying dependencies...
===> Analyzing applications...
===> Compiling relapp
Solving Release relapp-1.0.12Resolved relapp-1.0.12release: relapp-1.0.12
erts: 13.0.4
goals:
relapp
parse_trans
sasl
applications:
{kernel,"8.4.2"}
{stdlib,"4.0.1"}
{syntax_tools,"3.0"}
{parse_trans,"3.0.0"}
{relapp,"1.0.12"}
{sasl,"4.2"}
......
....relapp1/_build/default/rel/relapp/lib/sasl-4.2/ebin/sasl.apprelease start script createdRelease successfully assembled:
_build/default/rel/relapp===> Option --relname is missing
The environments are as follows:
erlang
Erlang/OTP 25 [erts-13.0.4] [source] [64-bit] [smp:4:4] [ds:4:4:10] [async-threads:1]
Eshell V13.0.4 (abort with ^G)
rebar3
rebar 3.20.0 on Erlang/OTP 25 Erts 13.0.4
After many times of retry and experiment, I found it in this article.
Hot code reloading with Erlang and Rebar3
The answer is such as：
rebar3 relup -n nine9s -v "0.2.0" -u "0.1.0"
However, there are some issues which need attention.
The rebar.config file
You should replace the default options {mode, dev} with {dev_mode, false}
the *.appup.src
You cannot include the point_of_no_return option in this file, otherwise there will be some problem such as:
No release upgrade script entry for xxxx-0.2.0 to xxxx-0.1.0 in file
When i run command elixir -v or mix, it will return:
{"init terminating in do_boot",{undef,[{elixir,start_cli,[],[]},{init,start_em,1,[]},{init,do_boot,3,[]}]}}
Crash dump is being written to: erl_crash.dump...done
init terminating in do_boot ()
Some details:
$ brew list
elixir erlang ...
$ erl
Erlang/OTP 19 [erts-8.0] [source-6dc93c1] [64-bit] [smp:4:4] [async-threads:10] [hipe] [kernel-poll:false]
Eshell V8.0 (abort with ^G)
1>
$ elixir
Usage: elixir [options] [.exs file] [data]
-e COMMAND Evaluates the given command (*)
-r FILE Requires the given files/patterns (*)
...
I have used brew uninstall, reinstall, but nothing change. Please help me fix it!
erl without any arguments will run Erlang shell. But if you want to run Elixir shell you should try running iex (interactive elixir). elixir is used to run programs you already coded, like elixir simple.exs
Or it might be that your Erlang version is little out of date. Try running brew update.
(Newbie here) I am having an error when trying to run ranch example.
Via rebar I created application and node (please see on github).
But when I am trying to build and run it I am getting undef ranch,start_listener.
Please see full console output:
$ rebar get-deps compile generate && sh rel/reverse/bin/reverse console
WARN: Expected reverse/deps/ranch to be an app dir (containing ebin/*.app), but no .app found.
==> rel (get-deps)
==> reverse (get-deps)
WARN: Expected reverse/deps/ranch to be an app dir (containing ebin/*.app), but no .app found.
Pulling ranch from {git,"git#github.com:ninenines/ranch.git",{tag,"1.1.0"}}
Cloning into 'ranch'...
==> ranch (get-deps)
==> ranch (compile)
Compiled src/ranch_transport.erl
Compiled src/ranch_sup.erl
Compiled src/ranch_ssl.erl
Compiled src/ranch_tcp.erl
Compiled src/ranch_protocol.erl
Compiled src/ranch_listener_sup.erl
Compiled src/ranch_app.erl
Compiled src/ranch_acceptors_sup.erl
Compiled src/ranch_acceptor.erl
Compiled src/ranch_server.erl
Compiled src/ranch.erl
Compiled src/ranch_conns_sup.erl
==> rel (compile)
==> reverse (compile)
Compiled src/reverse_sup.erl
Compiled src/reverse_app.erl
Compiled src/reverse_protocol.erl
==> rel (generate)
WARN: 'generate' command does not apply to directory reverse
Exec: reverse/rel/reverse/erts-6.3/bin/erlexec -boot reverse/rel/reverse/releases/1/reverse -mode embedded -config reverse/rel/reverse/releases/1/sys.config -args_file reverse/rel/reverse/releases/1/vm.args -- console
Root: reverse/rel/reverse
Erlang/OTP 17 [erts-6.3] [source-f9282c6] [64-bit] [smp:4:4] [async-threads:10] [hipe] [kernel-poll:false]
Eshell V6.3 (abort with ^G)
(reverse#127.0.0.1)1>
=INFO REPORT==== 30-Dec-2014::22:47:08 ===
application: reverse
exited: {bad_return,
{{reverse_app,start,[normal,[]]},
{'EXIT',
{undef,
[{ranch,start_listener,
[reverse,10,ranch_tcp,
[{port,5555}],
reverse_protocol,[]],
[]},
{reverse_app,start,2,
[{file,"src/reverse_app.erl"},{line,13}]},
{application_master,start_it_old,4,
[{file,"application_master.erl"},
{line,272}]}]}}}}
type: permanent
{"Kernel pid terminated",application_controller,"{application_start_failure,reverse,{bad_return,{{reverse_app,start,[normal,[]]},{'EXIT',{undef,[{ranch,start_listener,[reverse,10,ranch_tcp,[{port,5555}],reverse_protocol,[]],[]},{reverse_app,start,2,[{file,\"src/reverse_app.erl\"},{line,13}]},{application_master,start_it_old,4,[{file,\"application_master.erl\"},{line,272}]}]}}}}}"}
Crash dump was written to: erl_crash.dump
I am not sure I correctly added ranch to reltool.config (please see on github). But If I remove deps from libs_dir path I will get rebar generate error Application version clash. Multiple directories contain version ....
UPDATE if I remove failing call and run it, application:which_applications(). gives me {ranch,[],[]} as one of the running ones.
UPDATE versions
$ erl
Erlang/OTP 17 [erts-6.3] [source-f9282c6] [64-bit] [smp:4:4] [async-threads:10] [hipe] [kernel-poll:false]
$ rebar --version
rebar 2.5.1 17 20141223_141030 git 2.5.1-84-gdd9125e
What I am doing wrong?
Thanks in advance!
In the reltool.config, remove the ebin directory from the path to Ranch:
{app, ranch, [{mod_cond, app}, {incl_cond, include}, {lib_dir, "../deps/ranch/"}]}
If you have lots of dependencies it's more convenient to do:
{lib_dirs, ["../deps"]}
instead of having a separate {app, <dep_name>, [...]} for each dependency.
The Application version clash. Multiple directories contain version XXX error indicates that the Ranch application is already installed, probably in the Erlang lib directory, creating conflicts with the deps version downloaded by Rebar.
Very new to Erlang, and any attempt to run a simple hello world program using the rebar results in the following error:
./rel/mysample/bin/mysample console
Exec: /home/jwong/erlang_examples/mysample/rel/mysample/erts-5.9.2/bin/erlexec -boot /home/jwong/erlang_examples/mysample/rel/mysample/releases/1/mysample -mode embedded -config /home/jwong/erlang_examples/mysample/rel/mysample/releases/1/sys.config -args_file /home/jwong/erlang_examples/mysample/rel/mysample/releases/1/vm.args -- console
Root: /home/jwong/erlang_examples/mysample/rel/mysample
{"init terminating in do_boot",{'cannot load',hipe,get_file}}
Crash dump was written to: erl_crash.dump
init terminating in do_boot ()
erl -init_debug
{progress,preloaded}
{progress,kernel_load_completed}
{progress,modules_loaded}
{start,heart}
{start,error_logger}
{start,application_controller}
{progress,init_kernel_started}
{apply,{application,load,[{application,stdlib,[{description,"ERTS CXC 138 10"},{vsn,"1.18.2"},{id,[]},{modules,[array,base64,beam_lib,binary,c,calendar,dets,dets_server,dets_sup,dets_utils,dets_v8,dets_v9,dict,digraph,digraph_utils,edlin,edlin_expand,epp,eval_bits,erl_bits,erl_compile,erl_eval,erl_expand_records,erl_internal,erl_lint,erl_parse,erl_posix_msg,erl_pp,erl_scan,erl_tar,error_logger_file_h,error_logger_tty_h,escript,ets,file_sorter,filelib,filename,gb_trees,gb_sets,gen,gen_event,gen_fsm,gen_server,io,io_lib,io_lib_format,io_lib_fread,io_lib_pretty,lib,lists,log_mf_h,math,ms_transform,orddict,ordsets,otp_internal,pg,pool,proc_lib,proplists,qlc,qlc_pt,queue,random,re,sets,shell,shell_default,slave,sofs,string,supervisor,supervisor_bridge,sys,timer,unicode,win32reg,zip]},{registered,[timer_server,rsh_starter,take_over_monitor,pool_master,dets]},{applications,[kernel]},{included_applications,[]},{env,[]},{maxT,infinity},{maxP,infinity}]}]}}
{progress,applications_loaded}
{apply,{application,start_boot,[kernel,permanent]}}
Erlang R15B02 (erts-5.9.2) [source] [64-bit] [smp:4:4] [async-threads:0] [kernel-poll:false]
{apply,{application,start_boot,[stdlib,permanent]}}
{apply,{c,erlangrc,[]}}
{progress,started}
Eshell V5.9.2 (abort with ^G)
I am running ubuntu 12.04, using erlang compiled using kerl with no flag options. The only modifications I have made to the generated reltool.config is adding "../../" to the lib_dirs.
It looks very similar [this question][1] but adding "hipe" to the reltool.config resulted in an error:
{'EXIT',{{badmatch,{error,"Illegal option: [{app,mysample,hipe,[{mod_cond,app},{incl_cond,include}]}]"}}
What is going on, and how can I resolve this?
This turned out to be an exact duplicate of the linked question
The issue was that I was adding the line in the wrong area in the reltool.config.
rebar generates:
app, mysample, [{mod_cond, app}, {incl_cond, include}]}
within the configuration automatically. Rather than edit the line with "hipe", or add it at the bottom of the file, the correct configuration was to do add it within the sys array, underneath the generated app, so that it looks like:
{app, mysample, [{mod_cond, app}, {incl_cond, include}]},
{app, hipe, [{incl_cond, exclude}]}
I followed the instructions here, to the letter. I then ran the instruction to create an application project structure, and got the following error.
$ ./rebar create-app appid=myapp
Uncaught error in rebar_core: {'EXIT',
{undef,
[{crypto,start,[]},
{rebar_core,run,1},
{rebar,main,1},
{escript,run,2},
{escript,start,1},
{init,start_it,1},
{init,start_em,1}]}}
Any ideas what I'm doing wrong?
It looks like your Erlang was compiled without OpenSSL (the crypto module). crypto is required for many (most?) Erlang applications. You'll need to get a version of Erlang with a working crypto module, and then you shouldn't have any problems like this.
A clarification to YOUR ARGUMENT IS VALID's answer (adding as an answer because the comment is too short).
It may be that Erlang was compiled properly but the OpenSSL libraries are not visible to Erlang, so the crypto server can't be started. I compiled Erlang on Solaris 10 and it didn't complain about OpenSSL not being installed. In fact, it compiled crypto and installed it in: /usr/local/lib/erlang/lib/crypto-2.2/
But Rebar still wasn't working. It's easy to check if the problem is indeed with the crypto module.
Open Erlang shell and type crypto:start(). This was happening on my system:
bash-3.2# erl
Erlang R15B03 (erts-5.9.3.1) [source] [smp:2:2] [async-threads:0] [hipe] [kernel-poll:false]
Eshell V5.9.3.1 (abort with ^G)
1> crypto:start().
** exception error: undefined function crypto:start/0
2>
=ERROR REPORT==== 8-Feb-2013::15:28:43 ===
Unable to load crypto library. Failed with error:
"load_failed, Failed to load NIF library: 'ld.so.1: beam.smp: fatal: relocation error: file /usr/local/lib/erlang/lib/crypto-2.2/priv/lib/crypto.so: symbol DES_ede3_cfb_encrypt: referenced symbol not found'"
OpenSSL might not be installed on this system.
=ERROR REPORT==== 8-Feb-2013::15:28:43 ===
The on_load function for module crypto returned {error,
{load_failed,
"Failed to load NIF library: 'ld.so.1: beam.smp: fatal: relocation error: file /usr/local/lib/erlang/lib/crypto-2.2/priv/lib/crypto.so: symbol DES_ede3_cfb_encrypt: referenced symbol not found'"}}
If OpenSSL is installed in a non-standard location, as it is the case when using OpenCSW to install OpenSSL on Solaris 10, it is easy to fix the problem by adding the library path to the environment variable. For example on Solaris 10 to /etc/profile:
LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/opt/csw/lib
export LD_LIBRARY_PATH
Then log-out and log-in or re-load the bash environment, for example like this:
bash-3.2# . /etc/profile
Result:
bash-3.2# erl
Erlang R15B03 (erts-5.9.3.1) [source] [smp:2:2] [async-threads:0] [hipe] [kernel-poll:false]
Eshell V5.9.3.1 (abort with ^G)
1> crypto:start().
ok
I'd recommend using precompiled Erlang which is available from Erlang Solutions: https://www.erlang-solutions.com/downloads/download-erlang-otp
There's one for Windows too.
Getting this error when running make command:
root#hs:/var/www/html/ejabberd-master# make
rm -rf deps/.got
rm -rf deps/.built
/usr/local/lib/erlang/bin/escript rebar get-deps && :> deps/.got
Uncaught error in rebar_core: {'EXIT',
{undef,
[{crypto,start,[],[]},
{rebar,run_aux,2,
[{file,"src/rebar.erl"},{line,163}]},
{rebar,main,1,
[{file,"src/rebar.erl"},{line,58}]},
{escript,run,2,
[{file,"escript.erl"},{line,757}]},
{escript,start,1,
[{file,"escript.erl"},{line,277}]},
{init,start_it,1,[]},
{init,start_em,1,[]}]}}
make: *** [deps/.got] Error 1
The erlang details are:
root#hs:/home/node# erl
Erlang/OTP 18 [erts-7.0] [source] [64-bit] [smp:4:4] [async- threads:10] [hipe] [kernel-poll:false]
Eshell V7.0 (abort with ^G)
1> crypto:start()
1>
Seems like crypto not working, as the command gives "Ok" or "exception error".
Help needed.
Thanks for the answer Ivan. But it seems I figured out the issue:
The ubuntu auto updates were turned off and the dependencies were not installed while compiling erlang (e.g. libssh-dev). Once the auto update was turned on it compiled and make command ran fine.