Object not found after successful PUT on S3 API

Luke Bakken lbakken at basho.com
Tue Mar 7 15:58:49 EST 2017


Hi Daniel,

Thanks for providing all of that information.

You are missing important configuration for riak_kv that can only be
provided in an /etc/riak/advanced.config file. Please see the following
document, especially the section to which I link here:

http://docs.basho.com/riak/cs/2.1.1/cookbooks/configuration/
riak-for-cs/#setting-up-the-proper-riak-backend

[
    {riak_kv, [
        *% NOTE: double-check this path for your environment:*
        {add_paths, ["/usr/lib/riak-cs/lib/riak_cs-2.1.1/ebin"]},
        {storage_backend, riak_cs_kv_multi_backend},
        {multi_backend_prefix_list, [{<<"0b:">>, be_blocks}]},
        {multi_backend_default, be_default},
        {multi_backend, [
            {be_default, riak_kv_eleveldb_backend, [
                {data_root, "/opt/data/ecryptfs/riak"}
            ]},
            {be_blocks, riak_kv_eleveldb_backend, [
                {data_root, "/opt/data/ecryptfs/riak_blocks"}
            ]}
        ]}
    ]}
].

Your configuration will look like the above. The contents of this file are
merged with the contents of /etc/riak/riak.conf to produce the
configuration that Riak uses.

Notice that I chose riak_kv_eleveldb_backend twice because of the
discussion you had previously about RAM usage and bitcask (
http://lists.basho.com/pipermail/riak-users_lists.basho.com/2016-November/
018801.html)

In your current configuration, you are not using the expected prefix for
the block data. My guess is that on very rare occasions your data happens
to overwrite the manifest for a file. You may also have corrupted files at
this point without noticing it at all.

*IMPORTANT:* you can't switch from your current configuration to this new
one without re-saving all of your data.

--
Luke Bakken
Engineer
lbakken at basho.com

--
Luke Bakken
Engineer
lbakken at basho.com

On Tue, Mar 7, 2017 at 6:47 AM, Daniel Miller <dmiller at dimagi.com> wrote:

> Responses inline.
>
> On Mon, Mar 6, 2017 at 3:04 PM, Luke Bakken <lbakken at basho.com> wrote:
>
>> Hi Daniel,
>>
>> Two questions:
>>
>> * Do you happen to have an /etc/riak/app.config file present?
>>
>
> No.
>
> Not sure if relevant, but I did notice that /etc/riak-cs/advanced.config
> does exist, which contradicts with what I said earlier. This is surprising
> to me because I did not create this file. Maybe it was created by the riak
> installer? Anyway, the content is:
>
> $ cat /etc/riak-cs/advanced.config
> [
>  {riak_cs,
>   [
>   ]}
> ].
>
>
>>
>> * On one of your Riak nodes, could you please execute the following
>> commands:
>>
>> riak attach
>> rp(application:get_all_env(riak_kv)).
>>
>> Copy the output of the previous command and attach as a separate file
>> to your response. Please note that the period is significant. Use
>> CTRL-C CTRL-C to exit the "riak attach" session.
>>
>
> Attached.
>
>
>
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