释放双眼，带上耳机，听听看~！
由于今天在公司搭建memcache集群，就把今天的工作过程记录一下，与大家分享一下。
制作镜像环境：centos7.3.1611基础镜像(可以自行去docker hub上面下载)
也可以在下面连接下载
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部署方案：
Memcache版本：1.4.33
Memagent版本：0.5
基础镜像：centos7.3.1611
本文Memcache架构：
Memagent
135.10.145.39
0.5
200Mi
Memcache1
135.10.145.38
0.5
200Mi
Memcache2
135.10.145.37
0.5
200Mi
Memcache3
135.10.145.36
0.5
200Mi
Memcache4
135.10.145.43
0.5
200Mi
Memcache5(backup_service)
135.10.145.39
0.5
200Mi
1.制作memcache1.4.33镜像
DockerFile具体内容如下：
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2RUN yum -y install gcc make wget
3RUN wget https://github.com/libevent/libevent/releases/download/release-2.1.8-stable/libevent-2.1.8-stable.tar.gz
4RUN tar -zxf libevent-2.1.8-stable.tar.gz
5RUN cd /libevent-2.1.8-stable && ./configure -prefix=/usr && make && make install
6RUN cd /
7ENV VERSION=1.4.33
8RUN wget http://www.memcached.org/files/memcached-$VERSION.tar.gz
9RUN tar -zxf memcached-$VERSION.tar.gz
10RUN cd memcached-$VERSION && ./configure && make && make install
11RUN ln -s /usr/lib/libevent-2.1.so.6 /usr/lib64/libevent-2.1.so.6
12RUN rm -f /memcached-$VERSION.tar.gz
13WORKDIR /
14COPY entrypoint.sh /entrypoint.sh
15RUN chmod 775 /entrypoint.sh
16CMD ["./entrypoint.sh"]
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1.创建一个文件夹：
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- 将Dockerfile放在【docker_demo】文件夹下面
3.并在该文件夹下面创建entrypoint.sh文件
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entrypoint.sh 文件内容如下：
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3if [ -z "$CUSTOM_CMD" -o "$CUSTOM_CMD" = "None" ]; then
4 if [ -n "$MEMCACHED_PORT" ]; then
5 # check port
6 if [ $MEMCACHED_PORT -ge 65535 -o $MEMCACHED_PORT -le 1024 ]; then
7 echo >&2 'Error: The MEMCACHED_PORT needs to meet the conditions: 1024< port <65535'
8 exit 1
9 fi
10 MEMCACHED_PORT="-p $MEMCACHED_PORT"
11 fi
12 if [ -n "$MEMORY_LIMIT" ]; then
13 # unit MB
14 # check limit
15 if [ $MEMORY_LIMIT -gt 32768 -o $MEMORY_LIMIT -lt 64 ]; then
16 echo >&2 'Error: The MEMORY_LIMIT needs to meet the conditions: 64<= size <=32768'
17 exit 1
18 fi
19 MEMORY_LIMIT="-m $MEMORY_LIMIT"
20 fi
21 if [ -n "$CONNECTION_LIMIT" ]; then
22 # check connection
23 if [ $CONNECTION_LIMIT -gt 32768 -o $CONNECTION_LIMIT -lt 64 ]; then
24 echo >&2 'Error: The CONNECTION_LIMIT needs to meet the conditions: 64<= size <=81920'
25 exit 1
26 fi
27 CONNECTION_LIMIT="-c $CONNECTION_LIMIT"
28 fi
29 memcached $MEMORY_LIMIT -v -u root $MEMCACHED_PORT $CONNECTION_LIMIT
30else
31 $CUSTOM_CMD
32fi
33
34echo >&2 'Container lifecycle end. exit.'
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4.将centos-base-pass，memagent两个镜像load一下
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5.docker tag 修改镜像名称
6.使用Dockerfile创建镜像
7.验证memcahe是否执行
- 将memcache：1.4.33和memagent:0.5镜像推到镜像仓库（此步骤省略）
8.编写yaml文件
mem-test.yaml
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2apiVersion: extensions/v1beta1
3kind: Deployment
4metadata:
5 annotations:
6 deployment.kubernetes.io/revision: "1"
7 labels:
8 service_name: memagent
9 name: memagent
10 namespace: core-1 # 命名空间，修自己对应的
11spec:
12 replicas: 1 # 默认副本数
13 revisionHistoryLimit: 5
14 selector:
15 matchLabels:
16 service_name: memagent
17 strategy:
18 rollingUpdate:
19 maxSurge: 0
20 maxUnavailable: 1
21 type: RollingUpdate
22 template:
23 metadata:
24 labels:
25 service_name: memagent
26 namespace: core-1 # 命名空间，修自己对应的
27 spec:
28 affinity:
29 podAffinity: {}
30 podAntiAffinity: {}
31 containers:
32 - env:
33 - name: __ALAUDA_FULL_NAME__
34 - name: __ALAUDA_OVER_COMMIT_MEM__
35 value: "4096"
36 - name: __ALAUDA_APP_NAME__
37 value: memcache-121
38 - name: __ALAUDA_SERVICE_NAME__
39 value: memagent
40 - name: CONNECTION_LIMIT
41 value: "1024"
42 - name: __ALAUDA_REGION_NAME__
43 - name: __ALAUDA_CONTAINER_SIZE__
44 value: "2.0"
45 - name: __ALAUDA_OVER_COMMIT_CPU__
46 value: "2048"
47 - name: __ALAUDA_SERVICE_VERSION__
48 value: "3058"
49 - name: MEMCACHED_SERVERS
50 value: 135.10.145.36:13612,135.10.145.37:13612,135.10.145.38:13612,135.10.145.43:13612 # 此出修改，填写 memcached1-memcached4的ip.
51 - name: BACKUP_SERVERS
52 value: 135.10.145.39:13612 # 此处修改成memcached5的ip
53 - name: MEMAGENT_PORT
54 value: "12490"
55 image: 135.10.145.25:5000/pro1/memagent:0.5 # 镜像地址修改成自己上传至paas平台上的镜像地址（memagent:0.5的镜像）
56 imagePullPolicy: Always
57 name: memagent
58 resources:
59 limits:
60 cpu: "0.5" # 按照自己的需求修改容器规格
61 memory: 200Mi
62 requests:
63 cpu: "0.5"
64 memory: 200Mi
65 terminationMessagePath: /dev/termination-log
66 terminationMessagePolicy: File
67 dnsPolicy: ClusterFirst
68 hostNetwork: true
69 nodeSelector:
70 ip: 135.10.145.39 # memagent 的ip地址（自己规划）
71 restartPolicy: Always
72 schedulerName: default-scheduler
73 securityContext: {}
74 terminationGracePeriodSeconds: 10
75---
76apiVersion: extensions/v1beta1
77kind: Deployment
78metadata:
79 annotations:
80 deployment.kubernetes.io/revision: "1"
81 generation: 5
82 labels:
83 service_name: memcached1
84 name: memcached1
85 namespace: core-1 # 修改 命名空间
86spec:
87 replicas: 1
88 revisionHistoryLimit: 5
89 selector:
90 matchLabels:
91 service_name: memcached1
92 strategy:
93 rollingUpdate:
94 maxSurge: 0
95 maxUnavailable: 1
96 type: RollingUpdate
97 template:
98 metadata:
99 labels:
100 service_name: memcached1
101 namespace: core-1 # 命名空间，修自己对应的
102 spec:
103 affinity:
104 podAffinity: {}
105 podAntiAffinity: {}
106 containers:
107 - env:
108 - name: MEMORY_LIMIT
109 value: "128"
110 - name: __ALAUDA_FULL_NAME__
111 - name: __ALAUDA_OVER_COMMIT_MEM__
112 value: "4096"
113 - name: __ALAUDA_SERVICE_NAME__
114 value: memcached1
115 - name: __ALAUDA_APP_NAME__
116 value: memcache-121
117 - name: __ALAUDA_SERVICE_VERSION__
118 value: "3052"
119 - name: CONNECTION_LIMIT
120 value: "1024"
121 - name: __ALAUDA_OVER_COMMIT_CPU__
122 value: "2048"
123 - name: MEMCACHED_PORT
124 value: "13612"
125 - name: __ALAUDA_CONTAINER_SIZE__
126 value: "2.0"
127 - name: __ALAUDA_REGION_NAME__
128 image: 135.10.145.25:5000/pro1/memcache:1.4.33 # 镜像地址修改成自己上传至paas平台上的镜像地址（memcache:1.4.33的镜像）
129 imagePullPolicy: Always
130 name: memcached1
131 resources:
132 limits: # 按照自己的需求修改容器规格
133 cpu: "0.5"
134 memory: 200Mi
135 requests:
136 cpu: "0.5"
137 memory: 200Mi
138 terminationMessagePath: /dev/termination-log
139 terminationMessagePolicy: File
140 dnsPolicy: ClusterFirst
141 hostNetwork: true
142 nodeSelector:
143 ip: 135.10.145.38 #修改memcached1 的ip地址
144 restartPolicy: Always
145 schedulerName: default-scheduler
146 securityContext: {}
147 terminationGracePeriodSeconds: 10
148---
149apiVersion: extensions/v1beta1 # 下面的都同memcahe1
150kind: Deployment
151metadata:
152 annotations:
153 deployment.kubernetes.io/revision: "1"
154 generation: 5
155 labels:
156 service_name: memcached2
157 name: memcached2
158 namespace: core-1
159spec:
160 replicas: 1
161 revisionHistoryLimit: 5
162 selector:
163 matchLabels:
164 service_name: memcached2
165 strategy:
166 rollingUpdate:
167 maxSurge: 0
168 maxUnavailable: 1
169 type: RollingUpdate
170 template:
171 metadata:
172 labels:
173 service_name: memcached2
174 namespace: core-1
175 spec:
176 affinity:
177 podAffinity: {}
178 podAntiAffinity: {}
179 containers:
180 - env:
181 - name: MEMORY_LIMIT
182 value: "128"
183 - name: __ALAUDA_FULL_NAME__
184 - name: __ALAUDA_OVER_COMMIT_MEM__
185 value: "4096"
186 - name: __ALAUDA_SERVICE_NAME__
187 value: memcached2
188 - name: __ALAUDA_APP_NAME__
189 value: memcache-121
190 - name: __ALAUDA_SERVICE_VERSION__
191 value: "3046"
192 - name: CONNECTION_LIMIT
193 value: "1024"
194 - name: __ALAUDA_OVER_COMMIT_CPU__
195 value: "2048"
196 - name: MEMCACHED_PORT
197 value: "13612"
198 - name: __ALAUDA_CONTAINER_SIZE__
199 value: "2.0"
200 - name: __ALAUDA_REGION_NAME__
201 image: 135.10.145.25:5000/pro1/memcache:1.4.33
202 imagePullPolicy: Always
203 name: memcached2
204 resources:
205 limits:
206 cpu: "0.5"
207 memory: 200Mi
208 requests:
209 cpu: "0.5"
210 memory: 200Mi
211 terminationMessagePath: /dev/termination-log
212 terminationMessagePolicy: File
213 dnsPolicy: ClusterFirst
214 hostNetwork: true
215 nodeSelector:
216 ip: 135.10.145.37
217 restartPolicy: Always
218 schedulerName: default-scheduler
219 securityContext: {}
220 terminationGracePeriodSeconds: 10
221---
222apiVersion: extensions/v1beta1
223kind: Deployment
224metadata:
225 annotations:
226 deployment.kubernetes.io/revision: "1"
227 generation: 5
228 labels:
229 service_name: memcached3
230 name: memcached3
231 namespace: core-1
232spec:
233 replicas: 1
234 revisionHistoryLimit: 5
235 selector:
236 matchLabels:
237 service_name: memcached3
238 strategy:
239 rollingUpdate:
240 maxSurge: 0
241 maxUnavailable: 1
242 type: RollingUpdate
243 template:
244 metadata:
245 labels:
246 service_name: memcached3
247 namespace: core-1
248 spec:
249 affinity:
250 podAffinity: {}
251 podAntiAffinity: {}
252 containers:
253 - env:
254 - name: MEMORY_LIMIT
255 value: "128"
256 - name: __ALAUDA_FULLa_NAME__
257 - name: __ALAUDA_OVER_COMMIT_MEM__
258 value: "4096"
259 - name: __ALAUDA_SERVICE_NAME__
260 value: memcached3
261 - name: __ALAUDA_APP_NAME__
262 value: memcache-121
263 - name: __ALAUDA_SERVICE_VERSION__
264 value: "3055"
265 - name: CONNECTION_LIMIT
266 value: "1024"
267 - name: __ALAUDA_OVER_COMMIT_CPU__
268 value: "2048"
269 - name: MEMCACHED_PORT
270 value: "13612"
271 - name: __CREATE_TIME__
272 value: "2018-05-04T04:48:46.073Z"
273 - name: __ALAUDA_CONTAINER_SIZE__
274 value: "2.0"
275 - name: __ALAUDA_REGION_NAME__
276 image: 135.10.145.25:5000/pro1/memcache:1.4.33
277 imagePullPolicy: Always
278 name: memcached3
279 resources:
280 limits:
281 cpu: "0.5"
282 memory: 200Mi
283 requests:
284 cpu: "0.5"
285 memory: 200Mi
286 terminationMessagePath: /dev/termination-log
287 terminationMessagePolicy: File
288 dnsPolicy: ClusterFirst
289 hostNetwork: true
290 nodeSelector:
291 ip: 135.10.145.36
292 restartPolicy: Always
293 schedulerName: default-scheduler
294 securityContext: {}
295 terminationGracePeriodSeconds: 10
296---
297apiVersion: extensions/v1beta1
298kind: Deployment
299metadata:
300 annotations:
301 deployment.kubernetes.io/revision: "1"
302 generation: 5
303 labels:
304 service_name: memcached4
305 name: memcached4
306 namespace: core-1
307spec:
308 replicas: 1
309 revisionHistoryLimit: 5
310 selector:
311 matchLabels:
312 service_name: memcached4
313 strategy:
314 rollingUpdate:
315 maxSurge: 0
316 maxUnavailable: 1
317 type: RollingUpdate
318 template:
319 metadata:
320 labels:
321 service_name: memcached4
322 namespace: core-1
323 spec:
324 affinity:
325 podAffinity: {}
326 podAntiAffinity: {}
327 containers:
328 - env:
329 - name: MEMORY_LIMIT
330 value: "128"
331 - name: __ALAUDA_FULL_NAME__
332 - name: __ALAUDA_OVER_COMMIT_MEM__
333 value: "4096"
334 - name: __ALAUDA_SERVICE_NAME__
335 value: memcached4
336 - name: __ALAUDA_APP_NAME__
337 value: memcache-121
338 - name: __ALAUDA_SERVICE_VERSION__
339 value: "3043"
340 - name: CONNECTION_LIMIT
341 value: "1024"
342 - name: __ALAUDA_OVER_COMMIT_CPU__
343 value: "2048"
344 - name: MEMCACHED_PORT
345 value: "13612"
346 - name: __CREATE_TIME__
347 value: "2018-05-04T04:48:45.594Z"
348 - name: __ALAUDA_CONTAINER_SIZE__
349 value: "2.0"
350 - name: __ALAUDA_REGION_NAME__
351 image: 135.10.145.25:5000/pro1/memcache:1.4.33
352 imagePullPolicy: Always
353 name: memcached4
354 resources:
355 limits:
356 cpu: "0.5"
357 memory: 200Mi
358 requests:
359 cpu: "0.5"
360 memory: 200Mi
361 terminationMessagePath: /dev/termination-log
362 terminationMessagePolicy: File
363 dnsPolicy: ClusterFirst
364 hostNetwork: true
365 nodeSelector:
366 ip: 135.10.145.43
367 restartPolicy: Always
368 schedulerName: default-scheduler
369 securityContext: {}
370 terminationGracePeriodSeconds: 10
371---
372apiVersion: extensions/v1beta1
373kind: Deployment
374metadata:
375 annotations:
376 deployment.kubernetes.io/revision: "1"
377 generation: 5
378 labels:
379 service_name: memcached5
380 name: memcached5
381 namespace: core-1
382spec:
383 replicas: 1
384 revisionHistoryLimit: 5
385 selector:
386 matchLabels:
387 service_name: memcached5
388 strategy:
389 rollingUpdate:
390 maxSurge: 0
391 maxUnavailable: 1
392 type: RollingUpdate
393 template:
394 metadata:
395 labels:
396 service_name: memcached5
397 namespace: core-1
398 spec:
399 affinity:
400 podAffinity: {}
401 podAntiAffinity: {}
402 containers:
403 - env:
404 - name: MEMORY_LIMIT
405 value: "128"
406 - name: __ALAUDA_FULL_NAME__
407 - name: __ALAUDA_OVER_COMMIT_MEM__
408 value: "4096"
409 - name: __ALAUDA_SERVICE_NAME__
410 value: memcached5
411 - name: __ALAUDA_APP_NAME__
412 value: memcache-121
413 - name: __ALAUDA_SERVICE_VERSION__
414 value: "3049"
415 - name: CONNECTION_LIMIT
416 value: "1024"
417 - name: __ALAUDA_OVER_COMMIT_CPU__
418 value: "2048"
419 - name: MEMCACHED_PORT
420 value: "13612"
421 - name: __CREATE_TIME__
422 value: "2018-05-04T04:48:45.687Z"
423 - name: __ALAUDA_CONTAINER_SIZE__
424 value: "2.0"
425 - name: __ALAUDA_REGION_NAME__
426 image: 135.10.145.25:5000/pro1/memcache:1.4.33
427 imagePullPolicy: Always
428 name: memcached5
429 resources:
430 limits:
431 cpu: "0.5"
432 memory: 200Mi
433 requests:
434 cpu: "0.5"
435 memory: 200Mi
436 terminationMessagePath: /dev/termination-log
437 terminationMessagePolicy: File
438 dnsPolicy: ClusterFirst
439 hostNetwork: true
440 nodeSelector:
441 ip: 135.10.145.39
442 restartPolicy: Always
443 schedulerName: default-scheduler
444 securityContext: {}
445 terminationGracePeriodSeconds: 10
446
447
yaml里面的配置文件，有部分需要自己修改一下哦。
9.使用kubectl apply -f mem-test.yaml 部署
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10.查看部署是否成功
小结：
到这里我们就部署成功了，谢谢大家的浏览。
由于我使用的是公司环境来部署的，所以yaml文件有一些参数可能大家不需要，大家可以自行优化哦。
