我试图通过使用脚本完全安装mysql 5.7。这引起了一些麻烦，因为我想避免在安装过程中手动响应各种提示。
我已设法自动安装mysql 和使用以下代码运行mysql_secure_installation脚本：
# Add MySQL software repo
cd /tmp
curl -OL https://dev.mysql.com/get/mysql-apt-config_0.8.9-1_all.deb
DEBIAN_FRONTEND=noninteractive dpkg -i mysql-apt-config*
# Install mysql
apt-get update
DEBIAN_FRONTEND=noninteractive apt-get install -y mysql-server
# Clean up install files
rm mysql-apt-config*
# Install "expect"
sudo apt-get -qq install expect > /dev/null
# Generate an expect script
tee ~/secure_mysql.sh > /dev/null << EOF
spawn $(which mysql_secure_installation)
# Would you like to setup the validate Password Plugin?
expect "Press y|Y for Yes, any other key for No:"
send "n\r"
# Please set the password for root here.
expect "New password:"
send "MyPass\r"
expect "Re-enter new password:"
send "MyPass\r"
# Remove anonymous users
expect "Remove anonymous users? (Press y|Y for Yes, any other key for No) :"
send "y\r"
# Disallow remote root login
expect "Disallow root login remotely? (Press y|Y for Yes, any other key for No) :"
send "y\r"
# Remove test DB?
expect "Remove test database and access to it? (Press y|Y for Yes, any other key for No) :"
send "y\r"
# Reload privilege tables
expect "Reload privilege tables now? (Press y|Y for Yes, any other key for No) :"
send "y\r"
expect eof
EOF
# This runs the "mysql_secure_installation" script which removes insecure defaults.
sudo expect ~/secure_mysql.sh
# Cleanup
rm -v ~/secure_mysql.sh
一切看起来都运行正常，但之后我仍然可以在没有密码的情况下以root用户身份登录。我尝试过刷新权限并重新启动mysql但没有帮助。我也试过手动运行mysql_secure_installation，但我遇到了同样的问题（一切看起来好像有效，但我仍然可以没有密码）。
似乎它可能连接到最初安装没有密码的mysql，但我不明白为什么以后会阻止我设置root密码。
还有其他人遇到过这个吗？
答案 0 :(得分：0)
我设法在我的Ubuntu 16.04系统上运行。无论出于何种原因，安全安装脚本似乎没有设置root密码，如果还没有，那么诀窍是设置密码作为mysql-server安装的一部分使用debconf-set-selections。
这还需要更新expect脚本，因为当设置了密码时，提示会略有不同。我的脚本最终如下：
MYSQL_PASS="MyPass"
# Add MySQL software repo (possibly unnecessary for you, but I want to set up group replication later)
cd /tmp
curl -OL https://dev.mysql.com/get/mysql-apt-config_0.8.9-1_all.deb
DEBIAN_FRONTEND=noninteractive dpkg -i mysql-apt-config*
# Install mysql
apt-get update
# You may have to change these two lines
echo "mysql-community-server mysql-community-server/root-pass password $MYSQL_PASS" | debconf-set-selections
echo "mysql-community-server mysql-community-server/re-root-pass password $MYSQL_PASS" | debconf-set-selections
apt-get install -y mysql-server
# Clean up install files
rm mysql-apt-config*
# Install "expect"
apt-get -qq install expect > /dev/null
# Generate an expect script
tee ~/secure_mysql.sh > /dev/null << EOF
spawn $(which mysql_secure_installation)
# Enter the password for user root
expect "Enter the password for user root:"
send $MYSQL_PASS
send "\r"
# Would you like to setup the validate Password Plugin?
expect "Press y|Y for Yes, any other key for No:"
send "n\r"
# Change the password for root?
expect "Change the password for root ? ((Press y|Y for Yes, any other key for No) :"
send "n\r"
# Remove anonymous users
expect "Remove anonymous users? (Press y|Y for Yes, any other key for No) :"
send "y\r"
# Disallow remote root login
expect "Disallow root login remotely? (Press y|Y for Yes, any other key for No) :"
send "y\r"
# Remove test DB?
expect "Remove test database and access to it? (Press y|Y for Yes, any other key for No) :"
send "y\r"
# Reload privilege tables
expect "Reload privilege tables now? (Press y|Y for Yes, any other key for No) :"
send "y\r"
expect eof
EOF
# Run Expect script.
# This runs the "mysql_secure_installation" script which removes insecure defaults.
sudo expect ~/secure_mysql.sh
# Cleanup
rm -v ~/secure_mysql.sh # Remove the generated Expect script
最简单的方法是设置测试VM并在其上进行mysql的手动试用安装。安装完成后，运行sudo apt install debconf-utils。
接下来使用
搜索配置数据库sudo debconf-get-selections | grep mysql
您正在最后一个字段中查找带密码的选项。对我来说，这些是：
mysql-community-server mysql-community-server/root-pass password
mysql-community-server mysql-community-server/re-root-pass password
但是互联网上有很多不同的命令，所以你的命令可能会有所不同。替换我脚本中的相关部分，你应该（希望）好好去。