linux系統安裝mysql

ubunut系統中安裝mysq

安裝

sudo apt-get install mysql-server
sudo apt install mysql-client
sudo apt install libmysqlclient-dev

測試

sudo netstat -tap | grep mysql

使用

mysql -uroot -p
回車後輸入密碼

centos安裝mysql

wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm
rpm -ivh mysql-community-release-el7-5.noarch.rpm
yum update
yum install mysql-server

遇到錯誤

nvidia-container-runtime/x86_64/signature                    | 2.0 kB  00:00:05 !!! 
https://nvidia.github.io/nvidia-container-runtime/centos7/x86_64/repodata/repomd.xml: [Errno -1] repomd.xml signature could not be verified for nvidia-container-runtime
Trying other mirror.


 One of the configured repositories failed (nvidia-container-runtime),
 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=nvidia-container-runtime ...

     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 nvidia-container-runtime
        or
            subscription-manager repos --disable=nvidia-container-runtime

     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=nvidia-container-runtime.skip_if_unavailable=true

failure: repodata/repomd.xml from nvidia-container-runtime: [Errno 256] No more mirrors to try.
https://nvidia.github.io/nvidia-container-runtime/centos7/x86_64/repodata/repomd.xml: [Errno -1] repomd.xml signature could not be verified for nvidia-container-runtime

解決方式

sudo gpg --homedir /var/lib/yum/repos/x86_64/7/libnvidia-container/gpgdir --delete-key F796ECB0
sudo gpg --homedir /var/lib/yum/repos/x86_64/7/nvidia-container-runtime/gpgdir --delete-key F796ECB0
sudo gpg --homedir /var/lib/yum/repos/x86_64/7/nvidia-docker/gpgdir --delete-key F796ECB0
sudo yum update

使用時遇到

 Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2）的方法

解決方法

sudo find / -name mysql.sock

根據位置

ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock
或者
ln -s /tmp/mysql.sock /var/lib/mysql/mysql.sock