Shulou(Shulou.com)06/01 Report--

[target]

Configure redis stand-alone master and slave, port 6378 connect master,6379 port connect slave,master read-write, slave read-only.

[installation and testing]

Installation

Sudo apt updatesudo apt install redis

Test (the following is normal)

Walker@Ubuntu:~$ redis-cli127.0.0.1:6379 > pingPONG

Use systemctl to manage redis

# View status $systemctl status redis# start redis$ systemctl start redis# restart redis$ systemctl restart redis# stop redis$ systemctl stop redis# add redis service to boot start $systemctl enable redis# disable boot start $systemctl disable redis

[configure stand-alone master-slave]

Create a directory and copy the configuration file

Mkdir-p / data/redis/ {6378 copyright Mastermind 6379 hands} / {conf,db,log} cp / etc/redis/redis.conf / data/redis/6378-master/conf/cp / etc/redis/redis.conf / data/redis/6379-slave/conf/

Edit the / data/redis/6378-master/conf/redis.conf file and modify or add the following

Daemonize yes pidfile / data/redis/6378-master/redis.pid bind 0.0.0.0port 6378 logfile / data/redis/6378-master/log/redis.logdir / data/redis/6378-master/db/

Edit the / data/redis/6379-slave/conf/redis.conf file and modify or add the following

Daemonize yes pidfile / data/redis/6379-slave/redis.pid bind 0.0.0.0port 6379 logfile / data/redis/6379-slave/log/redis.logdir / data/redis/6379-slave/db/ slaveof 127.0.0.1 6378

Turn off and disable the system redis

Sudo systemctl stop redissudo systemctl disable redis

Start the redis instance

Sudo redis-server / data/redis/6378-master/conf/redis.conf # launch mastersudo redis-server / data/redis/6379-slave/conf/redis.conf # launch slave

View the startup of the instance

# ps aux | grep redisroot 6069 0.0 0.1 50148 3952? Ssl 03:15 0:00 redis-server 0.0.0.0:6378root 6451 0.0 0.0 50148 3852? Ssl 03:27 0:00 redis-server 0.0.0.0:6379root 6457 0.0 13136 1084 pts/0 S + 03:28 0:00 grep-- color=auto redis

Close the instance

Redis-cli-h 127.0.0.1-p 6378 shutdown # turn off masterredis-cli-h 127.0.0.1-p 6379 shutdown # close slave

[persistence]

Persistence in rdb mode is enabled by default. (/ data/redis/6378-master/conf/redis.conf)

# save # save "" save 9001 # if there is one change in 900s, write the data snapshot in memory to disk save 30010 # if there are 10 changes in 300s, write the data snapshot in memory to disk save 60 10000 # if there are 10000 changes in 60 seconds, write the snapshot of data in memory to disk

Walker guessed that the implementation should be from small to large: set a timer to monitor, save 10000 changes in 60 seconds, 10 changes in 300 seconds, and 1 change in 900 seconds.

[maximum memory]

# maxmemory # 1Gmaxmemory 1073741824

[view version]

# redis-server-v Redis server vault 4.0.9 sha=00000000:0 malloc=jemalloc-3.6.0 bits=64 build=1bc80a08306a3efd

[view configuration]

$redis-cli-h 127.0.0.1-p 6378-a "mypass" 127.0.0.1 info

[configure Boot Boot]

Reference: ubuntu-18.04 settings boot startup script

Create a file: / etc/systemd/system/rc-local.service

Add the following to the rc-local.service

[Unit] Description=/etc/rc.local CompatibilityConditionPathExists=/etc/rc.localAfter= network.target[Service] Type=forkingExecStart=/etc/rc.local startTimeoutSec=0StandardOutput=ttyRemainAfterExit=yesSysVStartPriority= 99[Install] WantedBy=multi-user.target

Create a file: / etc/rc.local

Add the following to the rc.local

#! / bin/bashredis-server / data/redis/6378-master/conf/redis.confredis-server / data/redis/6379-slave/conf/redis.conf/home/walker/Python3Project/proxy_gather/start.shexit 0

Add executable permissions to rc.local

Sudo chmod 754 / etc/rc.local

Enable services (boot self-boot)

Sudo systemctl enable rc-local# is equivalent to ln-s / etc/systemd/system/rc-local.service / etc/systemd/system/multi-user.target.wants/

Start the service and check the status

Sudo systemctl start rc-local.servicesudo systemctl status rc-local.service

Restart the server to see if it can be booted.

* walker * *

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