原文日期：2018-05-19
1. Prepare
Machine number: 3 (ip:192.168.0.10,192.168.0.11,192.168.0.12)
Machine exposed port: 6379
Operating System: Centos 7
Redis: 3.2.11
Install gcc compiler
yum install -y gcc
Before to use redis-trib.rb, to install ruby and redis ruby lib.
yum install -y ruby rubygems
wget https://rubygems.org/downloads/redis-3.3.5.gem
gem install --local redis-3.3.5.gem
2. Redis install
Install it
Run following command,to download and compile and install redis.
wget http://download.redis.io/releases/redis-3.2.11.tar.gz
tar -zxvf redis-3.2.11.tar.gz
cd redis-3.2.11 && make
and then, you will look the success install infomation on the screen.
Compile error
jemalloc/jemalloc.h: No such file or directory
try to use following command
make MALLOC=libc
Run it
Run the following command on the machine(192.168.0.10).
$ ./src/redis-server
and then, you will look the success start infomation on the screen.
Check it
Now, you can run the following command to check whether the redis server startup is successful.
connect the redis server
$ ./src/redis-cli -h 127.0.0.1 -p 6379
lookup the redis keys
$ keys *
3. Redis master slave
Update the master config file.
Create or update the following infomation.
bind 0.0.0.0
or edit as follow
bind [master-ip]
Update the slave config file.
- The first way
Run the command on the slave machines.
$ ./src/redis-server --port 6379 --slaveof [server-ip] [port]
eg:
run it on the slave192.168.0.11.
$ ./src/redis-server --port 6379 --slaveof 192.168.0.10 6379
run it on the slave192.168.0.12
$ ./src/redis-server --port 6379 --slaveof 192.168.0.10 6379
- The second way
Or edit slave config file
slaveof <server-ip> <port>
And then run
$ ./src/redis-server
eg: edit redis.conf of the slave machines(192.168.0.11,192.168.0.12)
slaveof 192.168.0.10 6379
run it on the slave machines
$ ./src/redis-server --port 6379
Check it
Run add data command on the master machine, and then lookup whether the data exists from the slave machine.
$ set test 1
check the data on the slave machine
$ get test
if the slave is shutdown, then have not effect; else the master is shutdown, then will not available.
4. Redis cluster
Prepare
cluster config directory: /app/redis-3.2.11/cluster-conf/[port]
cluster data directory: /app/redis-data/[port]
port:7001,7002
Create directory
create config directory
mkdir -p /app/redis-3.2.11/cluster-conf/7001
mkdir -p /app/redis-3.2.11/cluster-conf/7002
create data directory
mkdir -p /app/redis-data/7001
mkdir -p /app/redis-data/7002
Create config file
copy the config file to the cluster config directory.
cp /app/redis-3.2.11/redis.conf /app/redis-3.2.11/cluster-conf/7001
cp /app/redis-3.2.11/redis.conf /app/redis-3.2.11/cluster-conf/7002
edit the config file of 7001,as following
port 7001
logfile "/app/redis-data/7001/redis.log"
dir /app/redis-data/7001/
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
bind 0.0.0.0
edit the config file of 7002,as following
port 7002
logfile "/app/redis-data/7002/redis.log"
dir /app/redis-data/7002/
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
bind 0.0.0.0
Copy the redis to the other server
scp -r redis-3.2.11/ root@192.168.0.11:/app/
scp -r redis-3.2.11/ root@192.168.0.12:/app/
Run all of redis server
Run the following command on every server.
./src/redis-server /app/redis-3.2.11/cluster-conf/7001/redis.conf &
./src/redis-server /app/redis-3.2.11/cluster-conf/7002/redis.conf &
Creating cluster
Run the following command on a redis server.
./redis-trib.rb create --replicas 1 192.168.0.10:7001 192.168.0.10:7001 192.168.0.11:7001 192.168.0.11:7002 192.168.0.12:7002 192.168.0.12:7002
Tip: the redis server must install ruby , redis dependcy package of ruby.
yum install -y ruby rubygems
# network error，gem install local redis lib
gem install --local redis-3.3.5.gem
There are some fault in install ruby, we also can use rvm style to install ruby. You can click the ruby version manager
Check it
Run the following command to connect cluster redis.
$ ./src/redis-cli -c -p 7001
Run the following command to show the cluster infomation.
cluster nodes
For example, the following infomation
1104bda669874620bfb31d69ec166d99c086fd4b 192.168.0.10:7002 slave 93e71137f7ff724f587bfa1c1054d721617c9b7c 0 1527061405087 2 connected
93e71137f7ff724f587bfa1c1054d721617c9b7c 192.168.0.11:7001 myself,master - 0 0 2 connected 5461-10922
c0c4bfe56bf2627706cc5a4420b00b43288cedfd 192.168.0.10:7001 master - 0 1527061405592 1 connected 0-5460
4cf2f4082e7fd517973ad162af44f9c6b331f7f6 192.168.0.12:7001 master - 0 1527061404079 3 connected 10923-16383
b4164c29660a2990fe1876a4afb6bb26bb50deab 192.168.0.12:7002 slave 4cf2f4082e7fd517973ad162af44f9c6b331f7f6 0 1527061404584 6 connected
7c9873e20ab729ce69c2839d7aa84dd7cd0f183c 192.168.0.11:7002 slave c0c4bfe56bf2627706cc5a4420b00b43288cedfd 0 1527061404079 5 connected
And Now, you are successful to create the cluster redis server.
5. Simple Redis cluster
- Enter create cluster directory
cd redis-3.2.11/utils/create-cluster
- Start redis instance
./create-cluster start && ./create-cluster create
- Stop and clean redis cluster
./create-cluster stop && ./create-cluster clean
