One of the major issue is “weak cryptographic standards removed” after 2018 February.
Here a note:
https://github.com/blog/2507-weak-cryptographic-standards-removed
To solve this, first you need to update openssl, then ruby, then cocoapod.
$ which openssl
/usr/bin/openssl
$ openssl version
OpenSSL 0.9.8zh 14 Jan 2016
$ /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
$ brew update
$ brew install openssl
$ brew upgrade openssl
`` If you need to have this software first in your PATH run: echo 'export PATH="/usr/local/opt/openssl/bin:$PATH"' >> ~/.bash_profile
$ echo 'export PATH="/usr/local/opt/openssl/bin:$PATH"' >> ~/.bash_profile
$ source ~/.bash_profile
$ which openssl
/usr/local/opt/openssl/bin/openssl
$ openssl version
OpenSSL 1.0.2n 7 Dec 2017
$ brew install rbenv ruby-build
$ echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile
$ echo 'if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi' >> ~/.bash_profile
$ source ~/.bash_profile
$ rbenv install --list
Available versions:
1.8.5-p52
1.8.5-p113
1.8.5-p114
1.8.5-p115
1.8.5-p231
1.8.6
:
2.5.0-rc1
2.5.0
2.5.1
2.6.0-dev
:
$ rbenv install 2.5.1
$ rbenv versions
* system (set by /Users/username/.rbenv/version)
2.5.1
$ ruby --version
ruby 2.0.0p648 (2015-12-16 revision 53162) [universal.x86_64-darwin16]
$ rbenv global 2.5.1
$ rbenv versions
system
* 2.5.1 (set by /Users/username/.rbenv/version)
$ ruby --version
ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-darwin16]
$ gem install cocoapods -n /usr/local/bin
$ which pod
/usr/local/bin/pod
$ pod --version
1.5.3
now, you can do
$ pod update
source link: https://qiita.com/satoshi-iwaki/items/ed2c267127dcc80baa21