[Error] yum install 에러 Peer's Certificate has expired.

증상

MariaDB yum 설치 시 에러 발생

# vi /etc/yum.repos.d/MariaDB.repo

[mariadb]
name = MariaDB
baseurl = http://yum.mariadb.org/10.4/centos7-amd64
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1

# yum install -y MariaDB

Dependencies Resolved

==================================================================================================================================================================================================
 Package                                               Arch                                   Version                                               Repository                               Size
==================================================================================================================================================================================================
Installing:
 MariaDB-compat                                        x86_64                                 10.4.24-1.el7.centos                                  mariadb                                 2.2 M
     replacing  mariadb-libs.x86_64 1:5.5.68-1.el7
 MariaDB-server                                        x86_64                                 10.4.24-1.el7.centos                                  mariadb                                  26 M
Installing for dependencies:
 MariaDB-client                                        x86_64                                 10.4.24-1.el7.centos                                  mariadb                                  12 M
 MariaDB-common                                        x86_64                                 10.4.24-1.el7.centos                                  mariadb                                  81 k
 boost-program-options                                 x86_64                                 1.53.0-28.el7                                         base                                    156 k
 galera-4                                              x86_64                                 26.4.11-1.el7.centos                                  mariadb                                 9.9 M
 socat                                                 x86_64                                 1.7.3.2-2.el7                                         base                                    290 k

Transaction Summary
==================================================================================================================================================================================================
Install  2 Packages (+5 Dependent packages)

Total size: 50 M
Downloading packages:
경고: /var/cache/yum/x86_64/7/mariadb/packages/MariaDB-common-10.4.24-1.el7.centos.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID 1bb943db: NOKEY
Retrieving key from https://yum.mariadb.org/RPM-GPG-KEY-MariaDB


GPG key retrieval failed: [Errno 14] curl#60 - "Peer's Certificate has expired."

 

원인

해당 리눅스 서버의 시간이 실제 시간으로 동기화되어있지 않아 KEY를 받아오지 못하는 상황

// 현재 날짜는 2022 02 17 일이지만 시간이 동기화 되어있지 않음

# date
2021. 07. 12. (월) 22:11:42 KST

 

해결

타임서버와 시간 동기화

# rdate -s zero.bora.net

# date
2022. 02. 17. (목) 02:46:12 KST

# yum install -y MariaDB

Installed:
  MariaDB-compat.x86_64 0:10.4.24-1.el7.centos                                                    MariaDB-server.x86_64 0:10.4.24-1.el7.centos                                                   

Dependency Installed:
  MariaDB-client.x86_64 0:10.4.24-1.el7.centos     MariaDB-common.x86_64 0:10.4.24-1.el7.centos     boost-program-options.x86_64 0:1.53.0-28.el7     galera-4.x86_64 0:26.4.11-1.el7.centos    
  socat.x86_64 0:1.7.3.2-2.el7                    

Replaced:
  mariadb-libs.x86_64 1:5.5.68-1.el7