2019-11-12

本番環境でsqlite3がbundle installできない

エラー内容

本番環境での設定中にgemを管理するためのbundleをインストールした後のbundle installした時sqlite3のとこでエラーがでる

エラー文.

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory:
/home/ec2-user/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/sqlite3-1.4.1/ext/sqlite3
/home/ec2-user/.rbenv/versions/2.5.3/bin/ruby -r ./siteconf20190901-9332-hmjopf.rb
extconf.rb
checking for sqlite3.h... no
sqlite3.h is missing. Try 'brew install sqlite3',
'yum install sqlite-devel' or 'apt-get install libsqlite3-dev'
and check your shared library search path (the
location where your sqlite3 shared library is located).
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
        --with-opt-dir
        --without-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=/home/ec2-user/.rbenv/versions/2.5.3/bin/$(RUBY_BASE_NAME)
        --with-sqlcipher
        --without-sqlcipher
        --with-sqlite3-config
        --without-sqlite3-config
        --with-pkg-config
        --without-pkg-config
        --with-sqlcipher
        --without-sqlcipher
        --with-sqlite3-dir
        --without-sqlite3-dir
        --with-sqlite3-include
        --without-sqlite3-include=${sqlite3-dir}/include
        --with-sqlite3-lib
        --without-sqlite3-lib=${sqlite3-dir}/lib

To see why this extension failed to compile, please check the mkmf.log which can be
found here:

/home/ec2-user/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/extensions/x86_64-linux/2.5.0-static/sqlite3-1.4.1/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in
/home/ec2-user/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/sqlite3-1.4.1 for
inspection.
Results logged to
/home/ec2-user/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/extensions/x86_64-linux/2.5.0-static/sqlite3-1.4.1/gem_make.out

An error occurred while installing sqlite3 (1.4.1), and Bundler cannot
continue.
Make sure that `gem install sqlite3 -v '1.4.1' --source 'https://rubygems.org/'`
succeeds before bundling.

In Gemfile:
  sqlite3

解決策

本番環境のターミナルでsudo yum install -y sqlite sqlite-devel
してからbundle install

2019-11-11

SSHホスト鍵が変わってるよと怒られたときのたい

WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

sshログインしようとしたらエラーが発生

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

@ 　WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! 　@

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!

Someone could be eavesdropping on you right now (man-in-the-middle attack)!

It is also possible that a host key has just been changed.

The fingerprint for the ECDSA key sent by the remote host is

SHA256:S/kbpKrABFDmaxSv6tMsr6VqvS+IIb6lO0ZGWi3lmWU.

Please contact your system administrator.

Add correct host key in [known_hostsの場所][host keyを登録してるソース] to get rid of this message. Offending RSA key in [known_hostsの場所][host keyを登録してるソース]:[行数]

ECDSA host key for xxx.xxx.xxx.x has changed and you have requested strict checking.

Host key verification failed.

host key を登録してるソースの修正

1.エラーに出ていた[known_hostsの場所][host keyを登録してるソース]を削除する。

$ rm [known_hostsの場所]

2.もう一度known_hostsファイルを作成する。

$ chmod 600 ダウンロードした鍵の名前.pem

3.ログインしてみる。

$ ssh -i ダウンロードした鍵の名前.pem ec2-user@作成したEC2インスタンスと紐付けたElastic IP

4.以下の様なメッセージが表示されることがありますが、「yes」と入力して下さい。

$ ssh -i aws_key.pem ec2-user@52.68.~~~~~~ The authenticity of host '52.68.~~~~~~ (52.68.~~~~~~)' can't be established. RSA key fingerprint is eb:7a:bd:e6:aa:da:~~~~~~~~~~~~~~~~~~~~~~~~. Are you sure you want to continue connecting (yes/no)?

sshログインができるようになっていると思います。