试了一下,在浏览器下 https://index.docker.io/v1/search?q=mysql&n=25 能有正常响应。
排除服务端地址问题。看网上说是系统时间与服务器时间与外界时间不一致。同步后验证，果然是这个原因。
root@localhost /etc/docker $ docker search mysql Error response from daemon: Get https://index.docker.io/v1/search?q=mysql&n=25: x509: certificate has expired or is not yet valid root@localhost /etc/docker $ vim daemon.json root@localhost /etc/docker $ docker search mysql Error response from daemon: Get https://index.docker.io/v1/search?q=mysql&n=25: x509: certificate has expired or is not yet valid root@localhost /etc/docker $ ntpdate cn.pool.ntp.org <== 同步时间 7 Nov 02:41:52 ntpdate[1518]: step time server 84.16.73.33 offset 54258955.898984 sec root@localhost /etc/docker $ docker search mysql INDEX NAME DESCRIPTION STARS OFFICIAL AUTOMATED docker.io docker.io/mysql MySQL is a widely used, open-source relati... 10134 [OK] docker.io docker.io/mariadb MariaDB is a community-developed fork of M... 3730 [OK] docker.io docker.io/mysql/mysql-server Optimized MySQL Server Docker images. Crea... 741 [OK] docker.io docker.io/percona Percona Server is a fork of the MySQL rela... 511 [OK] docker.io docker.io/centos/mysql-57-centos7 MySQL 5.7 SQL database server 84 docker.io docker.io/mysql/mysql-cluster Experimental MySQL Cluster Docker images. ... 78 docker.io docker.io/centurylink/mysql Image containing mysql. Optimized to be li... 60 [OK] docker.io docker.io/bitnami/mysql Bitnami MySQL Docker Image 46 [OK] docker.io docker.io/deitch/mysql-backup REPLACED! Please use http://hub.docker.com... 41 [OK] docker.io docker.io/tutum/mysql Base docker image to run a MySQL database ... 35 docker.io docker.io/databack/mysql-backup Back up mysql databases to... anywhere! 31 docker.io docker.io/prom/mysqld-exporter 31 [OK] docker.io docker.io/schickling/mysql-backup-s3 Backup MySQL to S3 (supports periodic back... 29 [OK] docker.io docker.io/linuxserver/mysql A Mysql container, brought to you by Linux... 26 docker.io docker.io/centos/mysql-56-centos7 MySQL 5.6 SQL database server 20 docker.io docker.io/circleci/mysql MySQL is a widely used, open-source relati... 19 docker.io docker.io/mysql/mysql-router MySQL Router provides transparent routing ... 17 docker.io docker.io/arey/mysql-client Run a MySQL client from a docker container 15 [OK] docker.io docker.io/fradelg/mysql-cron-backup MySQL/MariaDB database backup using cron t... 10 [OK] docker.io docker.io/yloeffler/mysql-backup This image runs mysqldump to backup data u... 7 [OK] docker.io docker.io/openshift/mysql-55-centos7 DEPRECATED: A Centos7 based MySQL v5.5 ima... 6 docker.io docker.io/devilbox/mysql Retagged MySQL, MariaDB and PerconaDB offi... 3 docker.io docker.io/ansibleplaybookbundle/mysql-apb An APB which deploys RHSCL MySQL 2 [OK] docker.io docker.io/jelastic/mysql An image of the MySQL database server main... 1 docker.io docker.io/widdpim/mysql-client Dockerized MySQL Client (5.7) including Cu... 1 [OK]