一、引言
今天在安装OpenResty的时候，出现了"Peer's Certificate has expired."的问题，详细错误如下：
[root@kubernetes ~]# sudo mv openresty.repo /etc/yum.repos.d/
[root@kubernetes ~]# sudo yum check-update
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* epel: mirror.sjtu.edu.cn
https://openresty.org/package/centos/7/x86_64/repodata/repomd.xml: [Errno 14] curl#60 - "Peer's Certificate has expired."
Trying other mirror.
It was impossible to connect to the CentOS servers.
This could mean a connectivity issue in your environment, such as the requirement to configure a proxy,
or a transparent proxy that tampers with TLS security, or an incorrect system clock.
You can try to solve this issue by using the instructions on https://wiki.centos.org/yum-errors
If above article doesn't help to resolve this issue please use https://bugs.centos.org/.
One of the configured repositories failed (Official OpenResty Open Source Repository for CentOS),
and yum doesn't have enough cached data to continue. At this point the only
safe thing yum can do is fail. There are a few ways to work "fix" this:
1. Contact the upstream for the repository and get them to fix the problem.
2. Reconfigure the baseurl/etc. for the repository, to point to a working
upstream. This is most often useful if you are using a newer
distribution release than is supported by the repository (and the
packages for the previous distribution release still work).
3. Run the command with the repository temporarily disabled
yum --disablerepo=openresty ...
4. Disable the repository permanently, so yum won't use it by default. Yum
will then just ignore the repository until you permanently enable it
again or use --enablerepo for temporary usage:
yum-config-manager --disable openresty
or
subscription-manager repos --disable=openresty
5. Configure the failing repository to be skipped, if it is unavailable.
Note that yum will try to contact the repo. when it runs most commands,
so will have to try and fail each time (and thus. yum will be be much
slower). If it is a very temporary problem though, this is often a nice
compromise:
yum-config-manager --save --setopt=openresty.skip_if_unavailable=true
failure: repodata/repomd.xml from openresty: [Errno 256] No more mirrors to try.
https://openresty.org/package/centos/7/x86_64/repodata/repomd.xml: [Errno 14] curl#60 - "Peer's Certificate has expired."
二、问题分析
通过在网上查询资料，得知可能是系统时间的问题；于是就查询了一下当前系统的时间，果然是时间对不上的问题：
[root@kubernetes ~]# date
Wed Aug 18 06:06:36 CST 2021
三、问题解决
1、安装 ntpdate。
[root@kubernetes ~]# yum install -y ntp
2、同步系统时间。
[root@kubernetes ~]# ntpdate time.apple.com
21 Nov 10:23:51 ntpdate[83378]: step time server 17.253.114.253 offset 8223337.126582 sec
3、再次执行安装。
[root@kubernetes ~]# sudo yum check-update
Loaded plugins: fastestmirror
Determining fastest mirrors
epel/x86_64/metalink | 7.8 kB 00:00:00
* epel: mirror.sjtu.edu.cn
base | 3.6 kB 00:00:00
extras | 2.9 kB 00:00:00
openresty | 2.9 kB 00:00:00
updates | 2.9 kB 00:00:00
openresty/7/x86_64/primary_db | 49 kB 00:00:00
bind-export-libs.x86_64 32:9.11.4-26.P2.el7_9.7 updates
bind-libs-lite.x86_64 32:9.11.4-26.P2.el7_9.7 updates
bind-license.noarch 32:9.11.4-26.P2.el7_9.7 updates
binutils.x86_64 2.27-44.base.el7_9.1 updates
ca-certificates.noarch 2021.2.50-72.el7_9 updates
epel-release.noarch 7-14 epel
glibc.i686 2.17-325.el7_9 updates
glibc.x86_64 2.17-325.el7_9 updates
glibc-common.x86_64 2.17-325.el7_9 updates
grub2.x86_64 1:2.02-0.87.el7.centos.7 updates
grub2-common.noarch 1:2.02-0.87.el7.centos.7 updates
grub2-pc.x86_64 1:2.02-0.87.el7.centos.7 updates
grub2-pc-modules.noarch 1:2.02-0.87.el7.centos.7 updates
grub2-tools.x86_64 1:2.02-0.87.el7.centos.7 updates
grub2-tools-extra.x86_64 1:2.02-0.87.el7.centos.7 updates
grub2-tools-minimal.x86_64 1:2.02-0.87.el7.centos.7 updates
kernel.x86_64 3.10.0-1160.45.1.el7 updates
kernel-tools.x86_64 3.10.0-1160.45.1.el7 updates
kernel-tools-libs.x86_64 3.10.0-1160.45.1.el7 updates
kpartx.x86_64 0.4.9-135.el7_9 updates
libxml2.x86_64 2.9.1-6.el7_9.6 updates
libxml2-python.x86_64 2.9.1-6.el7_9.6 updates
nspr.x86_64 4.32.0-1.el7_9 updates
nss.x86_64 3.67.0-3.el7_9 updates
nss-softokn.x86_64 3.67.0-3.el7_9 updates
nss-softokn-freebl.i686 3.67.0-3.el7_9 updates
nss-softokn-freebl.x86_64 3.67.0-3.el7_9 updates
nss-sysinit.x86_64 3.67.0-3.el7_9 updates
nss-tools.x86_64 3.67.0-3.el7_9 updates
nss-util.x86_64 3.67.0-1.el7_9 updates
openldap.x86_64 2.4.44-24.el7_9 updates
openssl.x86_64 1:1.0.2k-22.el7_9 updates
openssl-libs.x86_64 1:1.0.2k-22.el7_9 updates
pigz.x86_64 2.3.4-1.el7 epel
python-perf.x86_64 3.10.0-1160.45.1.el7 updates
rpm.x86_64 4.11.3-46.el7_9 updates
rpm-build-libs.x86_64 4.11.3-46.el7_9 updates
rpm-libs.x86_64 4.11.3-46.el7_9 updates
rpm-python.x86_64 4.11.3-46.el7_9 updates
sudo.x86_64 1.8.23-10.el7_9.2 updates
tzdata.noarch 2021e-1.el7 updates
virt-what.x86_64 1.18-4.el7_9.1 updates
[root@kubernetes ~]#
问题解决。
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