sed -i.bak ‘s/name/name2222/g’ 1.txt

https://docs.ansible.com/ansible/latest/user_guide/intro_adhoc.html

https://docs.ansible.com/ansible/latest/modules/list_of_all_modules.html#all-modules

https://docs.ansible.com/ansible/latest/user_guide/playbooks.html#working-with-playbooks

ansible-doc -l

ansible-doc yum

添加互信

安装 expect

sudo apt-get install tcl tk expect

创建脚本和主机列表文件，所有服务器密码需一样，根据实际环境，需要更改脚本里的密码

cat << EOF > ~/auto_ssh.exp

! /usr/bin/expect

执行ssh-keygen命令,如果需要就解注释

spawn ssh-keygen
expect “id_rsa”
send “\r”
expect “phrase”
send “\r”
expect “again”
send “\r”
interact

set f [open auto_ssh_host_ip r]
while { [gets $f ip]>=0} {
spawn ssh-copy-id $ip
expect {
“yes/no” {send “yes\r”;exp_continue} “password:” {send “123123\r”;exp_continue}
}
}
close $f
EOF

创建主机列表文件

cat << EOF > ~/auto_ssh_host_ip
server-31
server-32
server-33
EOF

执行脚本

 expect ~/auto_ssh.exp

There are multiple ways to find the ulimit value picked up by a process on AIX platform.

1. For Informatica processes with java and non java executable, (For example pmserver, pmrepagent)
   • Find the process id
   • Attach to process to dbx
     • dbx -a PID
   • Collect the limit information
     • proc rlimit > proc_limit.out
   • Detach process from dbx
     • detach
2. If the Informatica process is a java process then you can generate a javacore of the process which contains the ulimit details as well. The following KB can be followed to get the ulimit information of the java process. (HOW TO: Conclusively determine user limits (ulimit) set on an AIX Java process like an Informatica node process in PowerCenter (156083))
3. Also a command task can be used to run the command “ulimit -a”. This gives information about the ulimit values picked by the Informatica processes.

rm -fr .minikube

minikube start minikube start –image-mirror-country=cn

minikube start –vm-driver=kvm2 –registry-mirror=https://registry.docker-cn.com –image-mirror-country=cn –image-repository=registry.cn-hangzhou.aliyuncs.com/google_containers

docker pull mysql
docker images
apt-get install mysql-client
docker run --name=mytestdb -p 3306:3306 -p 33060:33060 -e  MYSQL_ROOT_PASSWORD=YourPassword -d mysql
mysql -h 127.0.0.1 -P 3306 -u root -p #注意使用localhost连接的时候，mysql client会使用 unix socket进行连接，所以要使用ip或者127.0.0.1而不是localhost

#!/bin/bash
newpassword=$1
if [ “$newpassword” == “” ];then
echo “password is emty. please use ./mysql_password_recovery.sh yourpassword”
exit
fi
echo ” Stopping mysql…”
systemctl stop mysqld
echo ” Setting the mySQL environment option..”
systemctl set-environment MYSQLD_OPTS=”–skip-grant-tables”
echo “Startng mysql ignoring password verification..”
systemctl start mysqld
echo “Updating the root user password with your provided password”
# mysql -u root
echo “UPDATE mysql.user SET authentication_string = PASSWORD(‘$newpassword’) WHERE User = ‘root’ AND Host = ‘localhost’;” | mysql -u root
echo “FLUSH PRIVILEGES;” | mysql -u root
#echo “quit” | mysql -u root
echo “Stopping mysql..”
systemctl stop mysqld
echo “Unsetting the mySQL envitroment option so it starts normally next time..”
systemctl unset-environment MYSQLD_OPTS
echo “Start mysql normally..”
systemctl start mysqld

echo “Try to login using your new password:”
mysql -u root -p

1、 make MALLOC=libc

2、注意按照tcl

3、make test后

4、./utils/install_server.sh配置自动启动等

grep “temporary password” /var/log/mysqld.log

# grep “temporary password” /var/log/mysqld.log
2019-11-22T15:39:47.315529Z 1 [Note] A temporary password is generated for root@localhost: _Ow,eqT,c7pa

然后可以设置新密码：

SET PASSWORD = PASSWORD(“root”);