Which version of Erlang?

[mfredholm]

Hi,
which version of Erlang can I use with latest release Riak KV 3.0.3 ?

[martinsumner]

It is tested on OTP 20 to OTP 22. OTP 22 is the recommended version for new installations.

[mfredholm]

Thanks,
I stumbled into another problem, I am testing on Ubuntu 20.04 and basically have installed Erlang like below,
what could be the problem?

# apt install build-essential autoconf fop xsltproc unixodbc-dev
# wget -O- https://packages.erlang-solutions.com/ubuntu/erlang_solutions.asc | sudo apt-key add -
# echo "deb https://packages.erlang-solutions.com/ubuntu focal contrib" > /etc/apt/sources.list.d/erlang.list
# apt update
# cat << EOF > /etc/apt/preferences.d/erlang
Package: erlang* esl-erlang
Pin: version 1:22.*
Pin-Priority: 501
EOF

# wget https://github.com/basho/riak/archive/riak-3.0.3.zip
# unzip riak-3.0.3.zip
# cd riak-riak-3.0.3/
# make rel
fatal: not a git repository (or any of the parent directories): .git
/root/riak/riak-riak-3.0.3/rebar3 compile
===> Fetching cuttlefish (from {git,"git://github.com/basho/cuttlefish.git",{tag,"2.1.0"}})
===> Plugin {rebar3_cuttlefish,
                       {git,"https://github.com/basho/rebar3_cuttlefish",
                           {tag,"0.2.0"}}} not available. It will not be used.
===> Verifying dependencies...
===> Fetching cluster_info (from {git,"git://github.com/basho/cluster_info.git",
                        {ref,"389d43af7ac1550b3c01cd55b8147bcc0e20022f"}})
===> Failed to fetch and copy dep: {git,"git://github.com/basho/cluster_info.git",
                                  {ref,
                                      "389d43af7ac1550b3c01cd55b8147bcc0e20022f"}}

[martinsumner]

Not sure. It is failing to fetch packages using git, do you have outbound access for the git protocol?

Perhaps try forcing everything to use https:

git config --global url."https://github.com/".insteadOf git@github.com:
git config --global url."https://".insteadOf git://

[martinsumner]

Perhaps my initial idea is wrong here. It appears the cuttlefish was fetched successfully (from {git,"git://github.com/basho/cuttlefish.git",{tag,"2.1.0"}}), but then rebar3_cuttlefish was not from {git,"https://github.com/basho/rebar3_cuttlefish",{tag,"0.2.0"}}}.

I don't believe there's any permissions involved, these are public repos. So I'm not sure why you would get an issue on a specific machine. The tags being requested look perfectly valid.

[mfredholm]

Thanks Martin for swift reply, really appreciated!

No idea, I have tested on my laptop and there it worked, this vmware server was just installed, so maybe I have added some package or config on my laptop that made it work.
Hoever, it worked nicely with the git config lines, I also hade to add package libpam0g-dev.
Now it compiled through, I just have to create deb package for internal use.

So this is my notes, in case you want to add it on the quick start page:

### Add Erlang, at time of writing, OTP 22 is recommended

# wget -O- https://packages.erlang-solutions.com/ubuntu/erlang_solutions.asc | sudo apt-key add -
# echo "deb https://packages.erlang-solutions.com/ubuntu focal contrib" > /etc/apt/sources.list.d/erlang.list
# apt update
# cat << EOF > /etc/apt/preferences.d/erlang
Package: erlang* esl-erlang
Pin: version 1:22.*
Pin-Priority: 501
EOF

### Compile Riak

# Added to solve problems fetching from git, comment out if needed
#git config --global url."https://github.com/".insteadOf git@github.com:
#git config --global url."https://".insteadOf git://

# apt install build-essential autoconf fop xsltproc unixodbc-dev libpam0g-dev

# mkdir riak && cd riak
# wget https://github.com/basho/riak/archive/riak-3.0.3.zip
# unzip riak-3.0.3.zip && cd riak-riak-3.0.3/
# make rel