Why

The official docker containers should have a PID 1 issue there, this prject was made for try to solve this problem.

Bootstrap

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
#!/bin/sh

JAVA_OPTS_EXT="-Djava.awt.headless=true -Djava.net.preferIPv4Stack=true -Dfile.encoding=UTF-8"
case ${@} in
  -a | a | -adapter | adapter)
    exec java ${JAVA_OPTS} ${JAVA_OPTS_EXT} com.alibaba.otter.canal.adapter.launcher.CanalAdapterApplication
  ;;
  -d | d | -deployer | deployer)
    exec java ${JAVA_OPTS} ${JAVA_OPTS_EXT} com.alibaba.otter.canal.deployer.CanalLauncher
  ;;
  -v | v | -version | version)
    echo "canal version: 1.1.4 d53bfd7 on java-${JAVA_VERSION}"
  ;;
  *)
    echo "usage: [[-][a[dapter]]|[d[eployer]]|[v[ersion]]]"
    echo ""
    echo "  adapter: launch the canal adapter, the workdir must be located in /alibaba/canal-adapter"
    echo "  deployer: launch the canal deployer, the workdir must be located in /alibaba/canal-deployer"
    echo "  version: display this build version"
    echo ""
    echo "shown this usage manual default"
  ;;
esac

Example usage in k8s

it was commented on here, copied here for record.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
apiVersion: v1
kind: ConfigMap
metadata:
  name: k8s-canal
data:
  canal.properties: |
    canal.zkServers = zookeeper:2181
    canal.withoutNetty = false
    canal.serverMode = tcp
    canal.destinations = sys_info
    canal.auto.scan = false
    canal.conf.dir = .
    canal.instance.binlog.format = ROW,STATEMENT,MIXED
    canal.instance.binlog.image = FULL,MINIMAL,NOBLOB
    canal.instance.tsdb.enable = true
    canal.instance.tsdb.dir = ${canal.conf.dir}/tsdb
    canal.instance.tsdb.url = jdbc:h2:${canal.instance.tsdb.dir}/h2;CACHE_SIZE=1000;MODE=MYSQL;
    canal.instance.tsdb.dbUsername = canal
    canal.instance.tsdb.dbPassword = canal
    canal.instance.tsdb.spring.xml = classpath:spring/tsdb/h2-tsdb.xml
    canal.instance.global.mode = spring
    canal.instance.global.lazy = false
    canal.instance.global.spring.xml = classpath:spring/default-instance.xml
  sys_info-instance.properties: |
    canal.instance.gtidon = false
    canal.instance.master.address = __RDS__:3306
    canal.instance.master.journal.name =
    canal.instance.master.position =
    canal.instance.dbUsername = reader
    canal.instance.dbPassword = "readER!"
    canal.instance.defaultDatabaseName = sys_info
    canal.instance.filter.regex = sys_info\\.jdp_tb_item
  application.yml: |
    server:
      port: 8081
    logging:
      level:
        org.springframework: WARN
        com.alibaba.otter.canal.client.adapter.rdb: WARN
    spring:
      jackson:
        date-format: yyyy-MM-dd HH:mm:ss
        time-zone: GMT+8
        default-property-inclusion: non_null
    canal.conf:
      zookeeperHosts: zookeeper:2181
      batchSize: 500
      syncBatchSize: 1000
      retries: 2
      mode: tcp
      canalAdapters:
      - instance: sys_info
        groups:
        - groupId: g1
          outerAdapters:
          - name: rdb
            key: pg_52_50
            properties:
              jdbc.url: jdbc:postgresql://__PG__:5432/analytics
              jdbc.username: writer
              jdbc.password: "writER!"
              threads: 10
              commitSize: 3000
  sys_info-jdp_tb_item.yml: |
    destination     : sys_info
    outerAdapterKey : sys_info
    concurrent      : true
    dbMapping:
      database    : sys_info
      table       : jdp_tb_item
      targetTable : sys_info.jdp_tb_item
      targetColumns:
        num_iid        : num_iid
        nick           : nick
        approve_status : approve_status
        has_showcase   : has_showcase
        created        : created
        modified       : modified
        cid            : cid
        has_discount   : has_discount
        jdp_hashcode   : jdp_hashcode
        jdp_response   : jdp_response
        jdp_delete     : jdp_delete
        jdp_created    : jdp_created
        jdp_modified   : jdp_modified
      targetPk:
        num_iid: num_iid
---
apiVersion: v1
kind: Service
metadata:
  name: zookeeper
  labels:
    app: zk
spec:
  ports:
  - port: 2181
    name: client
  clusterIP: None
  selector:
    app: zk
---
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  labels:
    app: ak
  name: zookeeper
spec:
  replicas: 1
  selector:
    matchLabels:
      app: zk
  template:
    metadata:
      name: zk
      labels:
        app: zk
    spec:
      volumes:
      - name: localtime
        hostPath:
          path: /usr/share/zoneinfo/Asia/Shanghai
      containers:
      - name: zookeeper
        image: zookeeper:3.3
        volumeMounts:
        - name: localtime
          mountPath: /etc/localtime
          readOnly: true
---
apiVersion: v1
kind: Service
metadata:
  name: deployer
  labels:
    app: canal-deployer
spec:
  ports:
  - port: 11111
    name: deployer
  - port: 11112
    name: metrics
  clusterIP: None
  selector:
    app: canal-deployer
---
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  labels:
    app: canal-deployer
  name: deployer
spec:
  minReadySeconds: 10
  selector:
    matchLabels:
      app: canal-deployer
  template:
    metadata:
      name: canal-deployer
      labels:
        app: canal-deployer
    spec:
      volumes:
      - name: localtime
        hostPath:
          path: /usr/share/zoneinfo/Asia/Shanghai
      - name: conf
        configMap:
          name: k8s-canal
      - name: tsdb
        hostPath:
          path: /opt/canal-h2-tsdb
      containers:
      - name: deployer
        image: thenorthmemory/canal:latest-alpine
        volumeMounts:
        - mountPath: /etc/localtime
          name: localtime
          readOnly: true
        - mountPath: /alibaba/canal-deployer/conf/canal.properties
          name: conf
          subPath: canal.properties
          readOnly: true
        - mountPath: /alibaba/canal-deployer/conf/sys_info/instance.properties
          name: conf
          subPath: sys_info-instance.properties
          readOnly: true
        - mountPath: /alibaba/canal-deployer/tsdb
          name: tsdb
        env:
        - name: TZ
          value: Asia/Shanghai
        - name: JAVA_OPTS
          value: "-XX:+UnlockExperimentalVMOptions -XX:+UseCGroupMemoryLimitForHeap -Xmn138m -Xms256m -Xmx256m"
        args:
        - deployer
        ports:
        - containerPort: 11111
          protocol: TCP
        - containerPort: 11112
          protocol: TCP
        workingDir: /alibaba/canal-deployer
---
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  labels:
    app: canal-adapter
  name: adapter
spec:
  minReadySeconds: 10
  selector:
    matchLabels:
      app: canal-adapter
  template:
    metadata:
      name: canal-adapter
      labels:
        app: canal-adapter
    spec:
      volumes:
      - name: localtime
        hostPath:
          path: /usr/share/zoneinfo/Asia/Shanghai
      - name: conf
        configMap:
          name: k8s-canal
      containers:
      - name: adapter
        image: thenorthmemory/canal:latest-alpine
        volumeMounts:
        - mountPath: /etc/localtime
          name: localtime
          readOnly: true
        - mountPath: /alibaba/canal-adapter/conf/application.yml
          name: conf
          subPath: application.yml
          readOnly: true
        - mountPath: /alibaba/canal-adapter/conf/rdb/mytest_user.yml
          name: conf
          subPath: sys_info-jdp_tb_item.yml
          readOnly: true
        env:
        - name: TZ
          value: Asia/Shanghai
        - name: JAVA_OPTS
          value: "-XX:+UnlockExperimentalVMOptions -XX:+UseCGroupMemoryLimitForHeap -Xmn138m -Xms256m -Xmx256m"
        args:
        - adapter
        ports:
        - containerPort: 8081
          protocol: TCP
        workingDir: /alibaba/canal-adapter