Ansible-playbook roles用docker容器安装redis主从(学习笔记三十一)

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Ansible-playbook roles用docker容器安装redis主从(学习笔记三十一)

sktj 2018-03-30 16:32:00 浏览954
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docker版本

09:49:09 # docker version

Client version: 0.11.1

Client API version: 1.11

Go version (client): go1.2.1

Git commit (client): fb99f99/0.11.1

Server version: 0.11.1

Server API version: 1.11

Git commit (server): fb99f99/0.11.1

Go version (server): go1.2.1

Last stable version: 1.1.2, please update docker

ansible版本

09:51:55 # ansible --version

ansible 1.4.3

1、查看已有的docker镜像

09:39:26 # docker images

REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE

ubuntu              3.0                 6cee55276528        9 weeks ago         369.8 MB

centos5             3.0                 e08d23b09189        9 weeks ago         840.9 MB

centos6             3.0                 e94a3b24a19b        9 weeks ago         415.9 MB

2、查看当前运行的docker容器

09:39:47 # docker ps -a

CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS                   NAMES

846efb9e4d7a        ubuntu:3.0          /usr/sbin/sshd-D   2 weeks ago         Up 6 days           0.0.0.0:49167->22/tcpubuntu-test1        

b9a9e6f2caed        centos6:3.0         /usr/sbin/sshd-D   3 weeks ago         Up 6 days           0.0.0.0:49166->22/tcpzabbix-server       

978fff134b18        centos6:3.0         /usr/sbin/sshd-D   5 weeks ago         Up 6 days           0.0.0.0:49165->22/tcpcentos6-test5       

root@ip-10-10-10-10:/etc/ansible/roles/redis_install/templates

3、加载测试容器

由于是做redis主从,所以需要2个容器

09:39:50 # time  docker inspect $(docker run -d -p 22  --name="redis-master" centos6:3.0 /usr/sbin/sshd -D)|grep -i address|awk -F '"' '{print $4}'

172.17.0.5


real    0m6.369s

user    0m0.036s

sys 0m0.049s

root@ip-10-10-10-10:/etc/ansible/roles/redis_install/templates

09:40:25 # time  docker inspect $(docker run -d -p 22  --name="redis-slave" centos6:3.0 /usr/sbin/sshd -D)|grep -i address|awk -F '"' '{print $4}'

172.17.0.6


real    0m12.567s

user    0m0.047s

sys 0m0.060s

然后把新容器的ip加入到ansible的hosts里

root@ip-10-10-10-10:/etc/ansible/roles/redis_install/templates

09:40:46 # echo "172.17.0.5">>/etc/ansible/hosts

root@ip-10-10-10-10:/etc/ansible/roles/redis_install/templates

09:40:58 # echo "172.17.0.6">>/etc/ansible/hosts

root@ip-10-10-10-10:/etc/ansible/roles/redis_install/templates

4、ansible安装redis的信息

09:52:11 # cat /etc/ansible/roles/redis_install/vars/main.yml 

redis_dir: /data

redis_version: 2.6.17

redis_port: 6379

redis_conf_dir: /data/redis-2.6.17/conf

redis_db_dir: /data/redis-2.6.17/db

redis_log_dir: /data/redis-2.6.17/log

5、下面是redis的playbook结构

09:55:12 # tree /etc/ansible/roles/redis_install /etc/ansible/roles/redis_delete

/etc/ansible/roles/redis_install

├── files

│   └── redis-2.6.17.tar.gz

├── handlers

├── meta

│   └── main.yml

├── tasks

│   ├── copy.yml

│   ├── delete.yml

│   ├── install.yml

│   └── main.yml

├── templates

│   └── redis.conf

└── vars

    └── main.yml

/etc/ansible/roles/redis_delete

├── files

├── handlers

├── meta

│   └── main.yml

├── tasks

│   ├── delete.yml

│   └── main.yml

├── templates

│   └── delete_redis.sh

└── vars

    └── main.yml


12 directories, 13 files

6、playbook安装redis的内容是

09:57:09 # cat redis_install.yml 

---

- hosts: "`host`"

  remote_user: "`user`"

  gather_facts: True

  roles:

    - common

    - redis_install

7、playbook删除redis的内容是

09:57:31 # cat redis_delete.yml 

---

- hosts: "`host`"

  remote_user: "`user`"

  gather_facts: True

  roles:

    - redis_delete

下面是安装redis主从

8、安装redis master

09:43:11 # time ansible-playbook redis_install.yml --extra-vars "host=172.17.0.5 user=root" -k

SSH password: 


PLAY [172.17.0.5] ************************************************************* 


GATHERING FACTS *************************************************************** 

ok: [172.17.0.5]


TASK: [common | Install initializtion require software] *********************** 

changed: [172.17.0.5]


TASK: [redis_install | Copy Redis Software To Redhat Client] ****************** 

ok: [172.17.0.5]


TASK: [redis_install | Create Redis Install Dir] ****************************** 

ok: [172.17.0.5]


TASK: [redis_install | Uncompression Redis Software To Redhat Client] ********* 

changed: [172.17.0.5]


TASK: [redis_install | Copy Redis Config To Redhat Client] ******************** 

changed: [172.17.0.5]


TASK: [redis_install | Create Soft Link In Redhat Client] ********************* 

changed: [172.17.0.5] => (item=redis-cli)

changed: [172.17.0.5] => (item=redis-server)


TASK: [redis_install | Check Boot Start In Redhat Client] ********************* 

failed: [172.17.0.5] => {"changed": true, "cmd": "grep -c '/usr/bin/redis-server /data/redis-2.6.17/conf/redis_6379.conf' /etc/rc.local ", "delta": "0:00:00.007160", "end": "2014-08-13 09:45:18.660617", "item": "", "rc": 1, "start": "2014-08-13 09:45:18.653457"}

stdout: 0

...ignoring


TASK: [redis_install | Add Boot Start In Redhat Client] *********************** 

changed: [172.17.0.5]


TASK: [redis_install | Start Redis Service In Redhat Client] ****************** 

changed: [172.17.0.5]


TASK: [redis_install | Delete Redis compression Software In Redhat Client] **** 

changed: [172.17.0.5]


PLAY RECAP ******************************************************************** 

172.17.0.5                 : ok=11   changed=8    unreachable=0    failed=0   

real    0m12.757s

user    0m3.453s

sys 0m0.497s

9、查看redis master安装情况

09:48:39 # ssh 172.17.0.5

root@172.17.0.5's password: 

Last login: Wed Aug 13 09:45:28 2014 from 172.17.42.1

root@06762530db8c:~

09:48:43 # ps -ef|grep redis

root       294     1  0 09:45 ?        00:00:00 /usr/bin/redis-server/data/redis-2.6.17/conf/redis_6379.conf

root       343   329  0 09:48 pts/000:00:00 grepredis

root@06762530db8c:~

09:48:46 # cat /etc/rc.local 

#!/bin/sh

#

# This script will be executed *after* all the other init scripts.

# You can put your own initialization stuff in here if you don't

# want to do the full Sys V style init stuff.


touch/var/lock/subsys/local

/usr/bin/redis-server/data/redis-2.6.17/conf/redis_6379.conf

root@06762530db8c:~

09:48:52 # redis-cli -h 172.17.0.5 -p 6379

redis 172.17.0.5:6379> keys *

(empty list or set)

redis 172.17.0.5:6379>

10、安装redis slave

09:45:20 # time ansible-playbook redis_install.yml --extra-vars "host=172.17.0.6 user=root redis_master_ip=172.17.0.5 redis_master_port=6379" -k

SSH password: 


PLAY [172.17.0.6] ************************************************************* 


GATHERING FACTS *************************************************************** 

ok: [172.17.0.6]


TASK: [common | Install initializtion require software] *********************** 

changed: [172.17.0.6]


TASK: [redis_install | Copy Redis Software To Redhat Client] ****************** 

changed: [172.17.0.6]


TASK: [redis_install | Create Redis Install Dir] ****************************** 

ok: [172.17.0.6]


TASK: [redis_install | Uncompression Redis Software To Redhat Client] ********* 

changed: [172.17.0.6]


TASK: [redis_install | Copy Redis Config To Redhat Client] ******************** 

changed: [172.17.0.6]


TASK: [redis_install | Create Soft Link In Redhat Client] ********************* 

changed: [172.17.0.6] => (item=redis-cli)

changed: [172.17.0.6] => (item=redis-server)


TASK: [redis_install | Check Boot Start In Redhat Client] ********************* 

failed: [172.17.0.6] => {"changed": true, "cmd": "grep -c '/usr/bin/redis-server /data/redis-2.6.17/conf/redis_6379.conf' /etc/rc.local ", "delta": "0:00:00.006751", "end": "2014-08-13 09:49:07.569522", "item": "", "rc": 1, "start": "2014-08-13 09:49:07.562771"}

stdout: 0

...ignoring


TASK: [redis_install | Add Boot Start In Redhat Client] *********************** 

changed: [172.17.0.6]


TASK: [redis_install | Start Redis Service In Redhat Client] ****************** 

changed: [172.17.0.6]


TASK: [redis_install | Delete Redis compression Software In Redhat Client] **** 

changed: [172.17.0.6]


PLAY RECAP ******************************************************************** 

172.17.0.6                 : ok=11   changed=9    unreachable=0    failed=0   

real    1m48.579s

user    0m6.781s

sys 0m0.654s

11、查看redis slave安装情况

09:59:24 # ssh 172.17.0.6

root@172.17.0.6's password: 

root@dfec766fbaa7:~

09:59:28 # ll

total 0

root@dfec766fbaa7:~

09:59:31 # ps -ef|grep redis

root       197     1  0 09:49 ?        00:00:00 /usr/bin/redis-server/data/redis-2.6.17/conf/redis_6379.conf

root       227   212  0 09:59 pts/000:00:00 grepredis

09:59:49 # grep slave /data/redis-2.6.17/conf/redis_6379.conf |egrep -v "^#"

slaveof 172.17.0.5 6379

slave-serve-stale-data yes

slave-read-only yes

slave-priority 100

client-output-buffer-limit slave 256mb 64mb 60

root@dfec766fbaa7:~

10:00:09 # redis-cli -h 172.17.0.6 -p 6379

redis 172.17.0.6:6379> keys *

(empty list or set)

redis 172.17.0.6:6379> info

# Server

redis_version:2.6.17

redis_git_sha1:00000000

redis_git_dirty:0

redis_mode:standalone

os:Linux 2.6.32-431.17.1.el6.x86_64 x86_64

arch_bits:64

multiplexing_api:epoll

gcc_version:4.4.7

process_id:197

run_id:81207df2727abe534ae606afc0cb80016f75a422

tcp_port:6379

uptime_in_seconds:685

uptime_in_days:0

hz:10

lru_clock:280339


# Clients

connected_clients:2

client_longest_output_list:0

client_biggest_input_buf:0

blocked_clients:0


# Memory

used_memory:878072

used_memory_human:857.49K

used_memory_rss:7569408

used_memory_peak:877280

used_memory_peak_human:856.72K

used_memory_lua:31744

mem_fragmentation_ratio:8.62

mem_allocator:jemalloc-3.2.0


# Persistence

loading:0

rdb_changes_since_last_save:0

rdb_bgsave_in_progress:0

rdb_last_save_time:1407894548

rdb_last_bgsave_status:ok

rdb_last_bgsave_time_sec:-1

rdb_current_bgsave_time_sec:-1

aof_enabled:0

aof_rewrite_in_progress:0

aof_rewrite_scheduled:0

aof_last_rewrite_time_sec:-1

aof_current_rewrite_time_sec:-1

aof_last_bgrewrite_status:ok


# Stats

total_connections_received:1

total_commands_processed:70

instantaneous_ops_per_sec:0

rejected_connections:0

expired_keys:0

evicted_keys:0

keyspace_hits:0

keyspace_misses:0

pubsub_channels:0

pubsub_patterns:0

latest_fork_usec:0


# Replication

role:slave

master_host:172.17.0.5

master_port:6379

master_link_status:up

master_last_io_seconds_ago:1

master_sync_in_progress:0

slave_priority:100

slave_read_only:1

connected_slaves:0


# CPU

used_cpu_sys:0.24

used_cpu_user:0.10

used_cpu_sys_children:0.00

used_cpu_user_children:0.00


# Keyspace

可以从上面的Replication里看到主从做好了,信息如下图

img_2698a6bce37b562ee95b20faaf2758e3.jpe

然后去redis master里查看主从信息

img_5f7d6fdf349d90f37f6adb743d9da75f.jpe

12、redis 主从测试

A.redis master插入key

redis 172.17.0.5:6379> setmaster 1

OK

redis 172.17.0.5:6379> setslave 0

OK

redis 172.17.0.5:6379> get master

"1"

redis 172.17.0.5:6379> get slave

"0"

B.redis slave读取key

redis 172.17.0.6:6379> keys *

1) "master"

2) "slave"

redis 172.17.0.6:6379> get master

"1"

redis 172.17.0.6:6379> get slave

"0"

可以看到主从建立完成

下面是redis slave的日志情况

10:08:04 # cat /data/redis-2.6.17/log/redis_6379.log 

                _._                                                  

           _.-``__ ''-._                                             

      _.-``    `.  `_.  ''-._           Redis 2.6.17 (00000000/0) 64 bit

  .-`` .-```.  ```\/    _.,_ ''-._                                   

 (    '      ,       .-`  | `,    )     Running instand alone mode

 |`-._`-...-` __...-.``-._|'` _.-'|     Port: 6379

 |    `-._   `._    /     _.-'    |     PID: 197

  `-._    `-._  `-./  _.-'    _.-'

 |`-._`-._    `-.__.-'    _.-'_.-'|                                  

 |    `-._`-._        _.-'_.-'|           http://redis.io        

  `-._    `-._`-.__.-'_.-'_.-'                                   

 |`-._`-._    `-.__.-'    _.-'_.-'|                                  

 |    `-._`-._        _.-'_.-'|                                  

  `-._    `-._`-.__.-'_.-'_.-'                                   

      `-._    `-.__.-'    _.-'

          `-._        _.-'                                           

              `-.__.-'                                               


[197] 13 Aug 09:49:08.878 # Server started, Redis version 2.6.17

[197] 13 Aug 09:49:08.879 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.

[197] 13 Aug 09:49:08.879 * The server is now ready to accept connections on port 6379

[197] 13 Aug 09:49:09.879 * Connecting to MASTER 172.17.0.5:6379

[197] 13 Aug 09:49:09.879 * MASTER <-> SLAVE syncstarted

[197] 13 Aug 09:49:09.881 * Non blocking connect forSYNC fired the event.

[197] 13 Aug 09:49:09.881 * Master replied to PING, replication can continue...

[197] 13 Aug 09:49:10.035 * MASTER <-> SLAVE sync: receiving 18 bytes from master

[197] 13 Aug 09:49:10.035 * MASTER <-> SLAVE sync: Loading DB inmemory

[197] 13 Aug 09:49:10.035 * MASTER <-> SLAVE sync: Finished with success

[197] 13 Aug 10:04:56.980 * 1 changes in900 seconds. Saving...

[197] 13 Aug 10:04:56.982 * Background saving started by pid 233

[233] 13 Aug 10:04:57.226 * DB saved on disk

[233] 13 Aug 10:04:57.227 * RDB: 6 MB of memory used by copy-on-write

[197] 13 Aug 10:04:57.293 * Background saving terminated with success

13、删除redis安装

无论redis主从,删除都是一样的命令

09:57:32 # time ansible-playbook redis_delete.yml --extra-vars "host=172.17.0.5 user=root" -k

SSH password: 


PLAY [172.17.0.5] ************************************************************* 


GATHERING FACTS *************************************************************** 

ok: [172.17.0.5]


TASK: [redis_delete | Stop Redis Service In Redhat Client] ******************** 

changed: [172.17.0.5]


TASK: [redis_delete | Delete Redis Soft Line In Redhat Client] **************** 

changed: [172.17.0.5] => (item=redis-cli)

changed: [172.17.0.5] => (item=redis-server)


TASK: [redis_delete | Delete Redis Dir In Redhat Client] ********************** 

changed: [172.17.0.5]


TASK: [redis_delete | Delete Boot Start In Redhat Client] ********************* 

changed: [172.17.0.5]


PLAY RECAP ******************************************************************** 

172.17.0.5                 : ok=5    changed=4    unreachable=0    failed=0   



real    0m6.929s

user    0m1.942s

sys 0m0.250s

root@ip-10-10-10-10:/etc/ansible

10:09:18 # time ansible-playbook redis_delete.yml --extra-vars "host=172.17.0.6 user=root" -k

SSH password: 


PLAY [172.17.0.6] ************************************************************* 


GATHERING FACTS *************************************************************** 

ok: [172.17.0.6]


TASK: [redis_delete | Stop Redis Service In Redhat Client] ******************** 

changed: [172.17.0.6]


TASK: [redis_delete | Delete Redis Soft Line In Redhat Client] **************** 

changed: [172.17.0.6] => (item=redis-cli)

changed: [172.17.0.6] => (item=redis-server)


TASK: [redis_delete | Delete Redis Dir In Redhat Client] ********************** 

changed: [172.17.0.6]


TASK: [redis_delete | Delete Boot Start In Redhat Client] ********************* 

changed: [172.17.0.6]


PLAY RECAP ******************************************************************** 

172.17.0.6                 : ok=5    changed=4    unreachable=0    failed=0   

real    0m5.897s

user    0m1.726s

sys 0m0.258s

15、删除后测试

A.redis master上

10:09:55 # ifconfig

eth0      Link encap:Ethernet  HWaddr C6:3A:D2:D9:DD:D9  

          inet addr:172.17.0.5  Bcast:0.0.0.0  Mask:255.255.0.0

          inet6 addr: fe80::c43a:d2ff:fed9:ddd9/64Scope:Link

          UP BROADCAST RUNNING  MTU:1500  Metric:1

          RX packets:13236 errors:0 dropped:0 overruns:0 frame:0

          TX packets:12843 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000 

          RX bytes:26106313 (24.8 MiB)  TX bytes:906412 (885.1 KiB)


lo        Link encap:Local Loopback  

          inet addr:127.0.0.1  Mask:255.0.0.0

          inet6 addr: ::1/128Scope:Host

          UP LOOPBACK RUNNING  MTU:16436  Metric:1

          RX packets:196 errors:0 dropped:0 overruns:0 frame:0

          TX packets:196 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:0 

          RX bytes:9665 (9.4 KiB)  TX bytes:9665 (9.4 KiB)


root@06762530db8c:~

10:09:56 # ps -ef|grep redis

root       431   329  0 10:09 pts/000:00:00 grepredis

root@06762530db8c:~

10:09:59 # cat /etc/rc.local 

#!/bin/sh

#

# This script will be executed *after* all the other init scripts.

# You can put your own initialization stuff in here if you don't

# want to do the full Sys V style init stuff.


touch/var/lock/subsys/local

root@06762530db8c:~

10:10:01 # ll /data/

total 4

drwxr-xr-x 2 root root 4096 Jun  5 10:21 soft

root@06762530db8c:~

B. redis slave上

10:08:09 # ifconfig

eth0      Link encap:Ethernet  HWaddr BE:97:0C:B2:02:D9  

          inet addr:172.17.0.6  Bcast:0.0.0.0  Mask:255.255.0.0

          inet6 addr: fe80::bc97:cff:feb2:2d9/64Scope:Link

          UP BROADCAST RUNNING  MTU:1500  Metric:1

          RX packets:13062 errors:0 dropped:0 overruns:0 frame:0

          TX packets:12704 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000 

          RX bytes:25967216 (24.7 MiB)  TX bytes:842881 (823.1 KiB)


lo        Link encap:Local Loopback  

          inet addr:127.0.0.1  Mask:255.0.0.0

          inet6 addr: ::1/128Scope:Host

          UP LOOPBACK RUNNING  MTU:16436  Metric:1

          RX packets:86 errors:0 dropped:0 overruns:0 frame:0

          TX packets:86 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:0 

          RX bytes:5288 (5.1 KiB)  TX bytes:5288 (5.1 KiB)


root@dfec766fbaa7:~

10:10:32 # ps -ef|grep redis

root       319   212  0 10:10 pts/000:00:00 grepredis

root@dfec766fbaa7:~

10:10:37 # cat /etc/rc.local 

#!/bin/sh

#

# This script will be executed *after* all the other init scripts.

# You can put your own initialization stuff in here if you don't

# want to do the full Sys V style init stuff.


touch/var/lock/subsys/local

root@dfec766fbaa7:~

10:10:39 # ll /data/

total 4

drwxr-xr-x 2 root root 4096 Jun  5 10:21 soft

root@dfec766fbaa7:~

如果大家想使用我的例子,可以从github里下载(地址是https://github.com/dl528888/ansible-examples/tree/master/redis_install),然后放到/etc/ansible目录里,下面是内容

img_0fa5f9ffa0f88744b57c219b4ec6b79a.jpe

转载自:http://blog.51cto.com/dl528888/1539251

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