Figure-1
Introduction to Docker Compose
| Bhaskar S | 04/08/2017 |
Overview
In the article Introduction to Multi Docker Containers, we demonstrated how one could link 2 containers (business tier and data tier) to emulate a simple web application using the docker run command.
Is there a way to automate this process (in a repeatable way) of linking multiple Docker containers ???
Enter Docker Compose !!!
Docker Compose is a simple orchestration tool that helps in defining, building, starting, and linking multiple container(s) together to form the desired application stack.
The set of Docker container(s) (referred to as services in the Docker Compose parlance) that need to be started and linked together is defined in a docker-compose.yml file. Docker Compose uses this configuration file to compose the desired application stack.
Installation
The installation is on a Ubuntu 16.04 LTS based Linux desktop.
To install Docker Compose, execute the following commands:
$ sudo apt-get update
$ sudo apt-get install docker-compose
Execute the following command to check everything was ok:
$ docker-compose version
The following would be a typical output:
docker-compose version 1.5.2, build unknown docker-py version: 1.8.0 CPython version: 2.7.12 OpenSSL version: OpenSSL 1.0.2g 1 Mar 2016
The above installation procedure installs Docker Compose from the official Ubuntu repository which is not be the latest.
To install the most current version of Docker Compose (1.11.2 at time of this writing), execute the following command:
$ sudo curl -o /usr/bin/docker-compose -L "https://github.com/docker/compose/releases/download/1.11.2/docker-compose-$(uname -s)-$(uname -m)"
Now, re-execute the following command to make sure everything is ok:
$ docker-compose version
The following would be a typical output:
docker-compose version 1.11.2, build dfed245 docker-py version: 2.1.0 CPython version: 2.7.13 OpenSSL version: OpenSSL 1.0.1t 3 May 2016
Setup
For this multi-container demonstration using Docker Compose, we will leverage this Setup. Please follow the steps before proceeding futher in this aritcle.
Basics
For a multi-container application stack, Docker Compose uses a YAML file called docker-compose.yml to define a set of services (Docker containers) that make up the application stack along with their runtime configuration options.
The following is the general format of the docker-compose.yml file:
The following are some of the commonly used configuration options in a docker-compose.yml:
image :: specifies the Docker image to use for launching the service container.
It uses the syntax:
image: <image>[:<tag>]
where, <image> is the name of the Docker image to use. The optional [:<tag>] indicates a specific version of the image
build :: specifies the path to a Dockerfile from which to build a Docker image and use it for launching the service container.
It uses the syntax:
build: <path>
where, <path> is the directory path to a Dockerfile
depends_on :: specifies one or more service containers this service relies on.
It uses the syntax:
depends_on:
- <name-1>
- <name-2>
- <...>
- <name-n>
where, <name-1>, <name-2>, ..., <name-n> are the names of other service containers defined in the docker-compose.yml file
ports :: specifies the network port to expose.
It uses the syntax:
ports:
- <container-port-1>
- <container-port-2>
- <...>
- <container-port-n>
where, <container-port-1>, <container-port-2>, ..., <container-port-n> are the network ports from the container to bind to random port(s) on the local host
Another syntax:
ports:
- <host-port-1>:<container-port-1>
- <host-port-2>:<container-port-2>
- <...>
- <host-port-n>:<container-port-n>
where, <container-port-1>, <container-port-2>, ..., <container-port-n> are the network ports from the container to bind to the corresponding ports <host-port-1>, <host-port-2>, ..., <host-port-n> on the local host
restart :: specifies a policy on how to restart the service container that is stopped or killed.
It uses the syntax:
restart: always
where, the policy always indicates the service container needs to be restarted anytime it is stopped or killed
volumes :: specifies one or more paths on the local host that need to be mounted on the corresponding paths of the service container.
It uses the syntax:
volumes:
- <host-path-1>:<container-path-1>
- <host-path-2>:<container-path-2>
- <...>
- <host-path-n>:<container-path-n>
where, <host-path-1>, <host-path-2>, ..., <host-path-n> are the directories on the host that need to be mounted on the corresponding paths <container-path-1>, <container-path-2>, ..., <container-path-n> in the service container
links :: specifies one or more service containers this service connects or links to.
It uses the syntax:
links:
- <name-1>[:<alias-1>]
- <name-2>[:<alias-2>]
- <...>
- <name-n>[:<alias-n>]
where, <name-1>, <name-2>, ..., <name-n> are the names of other service containers defined in the docker-compose.yml file. The optional <alias-1>, <alias-2>, ..., <alias-n> are the aliases for the corresponding names
As indicated, the above docker-compose.yml configuration options are the most commonly used ones, so that one can get started - it not the complete exhaustive list of all the options.
Hands-on with Docker Compose
In this section, we will create the docker-compose.yml to link the multiple containers (data and business tier containers in our example) and demonstrate how to launch the corresponding application stack using Docker Compose.
For this multi-container demonstration, we will use the Docker image mysql_hellodb for the data tier and the Docker image tomcat_hellodb for the business tier.
Let us assume the current directory is /home/alice/hello.
Create the following docker-compose.yml file in the current directory:
To start our application stack (with the business tier and data tier) using the above docker-compose.yml, execute the following command:
$ docker-compose up
The following would be a typical output:
Creating hello_mysql_1 Creating hello_tomcat_1 Attaching to hello_mysql_1, hello_tomcat_1 mysql_1 | Initializing database mysql_1 | 2017-04-08T19:12:36.990983Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). mysql_1 | 2017-04-08T19:12:38.499112Z 0 [Warning] InnoDB: New log files created, LSN=45790 tomcat_1 | 08-Apr-2017 19:12:38.509 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version: Apache Tomcat/8.5.13 tomcat_1 | 08-Apr-2017 19:12:38.511 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built: Mar 27 2017 14:25:04 UTC tomcat_1 | 08-Apr-2017 19:12:38.511 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server number: 8.5.13.0 tomcat_1 | 08-Apr-2017 19:12:38.511 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name: Linux tomcat_1 | 08-Apr-2017 19:12:38.511 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version: 4.4.0-53-generic tomcat_1 | 08-Apr-2017 19:12:38.511 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture: amd64 tomcat_1 | 08-Apr-2017 19:12:38.511 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home: /usr/lib/jvm/java-8-openjdk-amd64/jre tomcat_1 | 08-Apr-2017 19:12:38.512 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version: 1.8.0_121-8u121-b13-1~bpo8+1-b13 tomcat_1 | 08-Apr-2017 19:12:38.512 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor: Oracle Corporation tomcat_1 | 08-Apr-2017 19:12:38.512 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE: /usr/local/tomcat tomcat_1 | 08-Apr-2017 19:12:38.512 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME: /usr/local/tomcat tomcat_1 | 08-Apr-2017 19:12:38.512 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=/usr/local/tomcat/conf/logging.properties tomcat_1 | 08-Apr-2017 19:12:38.512 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager tomcat_1 | 08-Apr-2017 19:12:38.512 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djdk.tls.ephemeralDHKeySize=2048 tomcat_1 | 08-Apr-2017 19:12:38.513 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.protocol.handler.pkgs=org.apache.catalina.webresources tomcat_1 | 08-Apr-2017 19:12:38.513 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=/usr/local/tomcat tomcat_1 | 08-Apr-2017 19:12:38.513 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=/usr/local/tomcat tomcat_1 | 08-Apr-2017 19:12:38.513 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=/usr/local/tomcat/temp tomcat_1 | 08-Apr-2017 19:12:38.513 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent Loaded APR based Apache Tomcat Native library 1.2.12 using APR version 1.5.1. tomcat_1 | 08-Apr-2017 19:12:38.513 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true]. tomcat_1 | 08-Apr-2017 19:12:38.513 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true] tomcat_1 | 08-Apr-2017 19:12:38.516 INFO [main] org.apache.catalina.core.AprLifecycleListener.initializeSSL OpenSSL successfully initialized (OpenSSL 1.1.0e 16 Feb 2017) tomcat_1 | 08-Apr-2017 19:12:38.581 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8080"] tomcat_1 | 08-Apr-2017 19:12:38.593 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read tomcat_1 | 08-Apr-2017 19:12:38.595 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-nio-8009"] tomcat_1 | 08-Apr-2017 19:12:38.596 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read tomcat_1 | 08-Apr-2017 19:12:38.597 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 415 ms tomcat_1 | 08-Apr-2017 19:12:38.613 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service Catalina tomcat_1 | 08-Apr-2017 19:12:38.613 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.5.13 tomcat_1 | 08-Apr-2017 19:12:38.667 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deploying web application archive /usr/local/tomcat/webapps/helloworld3.war mysql_1 | 2017-04-08T19:12:38.848315Z 0 [Warning] InnoDB: Creating foreign key constraint system tables. tomcat_1 | 08-Apr-2017 19:12:39.004 WARNING [localhost-startStop-1] org.apache.tomcat.dbcp.dbcp2.BasicDataSourceFactory.getObjectInstance Name = hellodb Property removeAbandoned is not used in DBCP2, use one or both of removeAbandonedOnBorrow or removeAbandonedOnMaintenance instead. Both have default value set to false. You have set value of "true" for "removeAbandoned" property, which is being ignored. tomcat_1 | 08-Apr-2017 19:12:39.041 INFO [localhost-startStop-1] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. mysql_1 | 2017-04-08T19:12:39.079151Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 550b40bb-1c8f-11e7-902d-0242ac120002. tomcat_1 | INFO 2017-04-08 19:12:39,107 [localhost-startStop-1] com.polarsparc.HelloServlet3 - Servlethas been initialized tomcat_1 | tomcat_1 | 08-Apr-2017 19:12:39.114 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application archive /usr/local/tomcat/webapps/helloworld3.war has finished in 446 ms tomcat_1 | 08-Apr-2017 19:12:39.115 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat/webapps/manager mysql_1 | 2017-04-08T19:12:39.116833Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened. mysql_1 | 2017-04-08T19:12:39.117243Z 1 [Warning] root@localhost is created with an empty password ! Please consider switching off the --initialize-insecure option. tomcat_1 | 08-Apr-2017 19:12:39.139 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat/webapps/manager has finished in 24 ms tomcat_1 | 08-Apr-2017 19:12:39.139 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat/webapps/examples tomcat_1 | 08-Apr-2017 19:12:39.314 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat/webapps/examples has finished in 175 ms tomcat_1 | 08-Apr-2017 19:12:39.314 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat/webapps/ROOT tomcat_1 | 08-Apr-2017 19:12:39.327 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat/webapps/ROOT has finished in 13 ms tomcat_1 | 08-Apr-2017 19:12:39.327 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat/webapps/docs tomcat_1 | 08-Apr-2017 19:12:39.339 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat/webapps/docs has finished in 12 ms tomcat_1 | 08-Apr-2017 19:12:39.339 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat/webapps/host-manager tomcat_1 | 08-Apr-2017 19:12:39.353 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat/webapps/host-manager has finished in 14 ms tomcat_1 | 08-Apr-2017 19:12:39.356 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"] tomcat_1 | 08-Apr-2017 19:12:39.362 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-8009"] tomcat_1 | 08-Apr-2017 19:12:39.364 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 767 ms mysql_1 | 2017-04-08T19:12:50.131350Z 1 [Warning] 'user' entry 'root@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:12:50.131446Z 1 [Warning] 'user' entry 'mysql.sys@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:12:50.131480Z 1 [Warning] 'db' entry 'sys mysql.sys@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:12:50.131508Z 1 [Warning] 'proxies_priv' entry '@ root@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:12:50.131572Z 1 [Warning] 'tables_priv' entry 'sys_config mysql.sys@localhost' ignored in --skip-name-resolve mode. mysql_1 | Database initialized mysql_1 | Initializing certificates mysql_1 | Generating a 2048 bit RSA private key mysql_1 | ...............................................................................+++ mysql_1 | .....................+++ mysql_1 | unable to write 'random state' mysql_1 | writing new private key to 'ca-key.pem' mysql_1 | ----- mysql_1 | Generating a 2048 bit RSA private key mysql_1 | ................................+++ mysql_1 | .......................................................+++ mysql_1 | unable to write 'random state' mysql_1 | writing new private key to 'server-key.pem' mysql_1 | ----- mysql_1 | Generating a 2048 bit RSA private key mysql_1 | ..+++ mysql_1 | ........+++ mysql_1 | unable to write 'random state' mysql_1 | writing new private key to 'client-key.pem' mysql_1 | ----- mysql_1 | Certificates initialized mysql_1 | MySQL init process in progress... mysql_1 | 2017-04-08T19:12:56.845491Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). mysql_1 | 2017-04-08T19:12:56.846476Z 0 [Note] mysqld (mysqld 5.7.17) starting as process 93 ... mysql_1 | 2017-04-08T19:12:56.849613Z 0 [Note] InnoDB: PUNCH HOLE support available mysql_1 | 2017-04-08T19:12:56.849636Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins mysql_1 | 2017-04-08T19:12:56.849642Z 0 [Note] InnoDB: Uses event mutexes mysql_1 | 2017-04-08T19:12:56.849646Z 0 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier mysql_1 | 2017-04-08T19:12:56.849654Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.3 mysql_1 | 2017-04-08T19:12:56.849660Z 0 [Note] InnoDB: Using Linux native AIO mysql_1 | 2017-04-08T19:12:56.849911Z 0 [Note] InnoDB: Number of pools: 1 mysql_1 | 2017-04-08T19:12:56.850016Z 0 [Note] InnoDB: Using CPU crc32 instructions mysql_1 | 2017-04-08T19:12:56.851415Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M mysql_1 | 2017-04-08T19:12:56.859718Z 0 [Note] InnoDB: Completed initialization of buffer pool mysql_1 | 2017-04-08T19:12:56.861605Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority(). mysql_1 | 2017-04-08T19:12:56.873522Z 0 [Note] InnoDB: Highest supported file format is Barracuda. mysql_1 | 2017-04-08T19:12:56.953959Z 0 [Note] InnoDB: Creating shared tablespace for temporary tables mysql_1 | 2017-04-08T19:12:56.954106Z 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ... mysql_1 | 2017-04-08T19:12:57.454621Z 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB. mysql_1 | 2017-04-08T19:12:57.455347Z 0 [Note] InnoDB: 96 redo rollback segment(s) found. 96 redo rollback segment(s) are active. mysql_1 | 2017-04-08T19:12:57.455400Z 0 [Note] InnoDB: 32 non-redo rollback segment(s) are active. mysql_1 | 2017-04-08T19:12:57.456556Z 0 [Note] InnoDB: Waiting for purge to start mysql_1 | 2017-04-08T19:12:57.506760Z 0 [Note] InnoDB: 5.7.17 started; log sequence number 2535854 mysql_1 | 2017-04-08T19:12:57.507200Z 0 [Note] InnoDB: Loading buffer pool(s) from /var/lib/mysql/ib_buffer_pool mysql_1 | 2017-04-08T19:12:57.507282Z 0 [Note] Plugin 'FEDERATED' is disabled. mysql_1 | 2017-04-08T19:12:57.512645Z 0 [Note] InnoDB: Buffer pool(s) load completed at 170408 19:12:57 mysql_1 | 2017-04-08T19:12:57.513865Z 0 [Note] Found ca.pem, server-cert.pem and server-key.pem in data directory. Trying to enable SSL support using them. mysql_1 | 2017-04-08T19:12:57.514017Z 0 [Warning] CA certificate ca.pem is self signed. mysql_1 | 2017-04-08T19:12:57.556639Z 0 [Warning] 'user' entry 'root@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:12:57.556709Z 0 [Warning] 'user' entry 'mysql.sys@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:12:57.556745Z 0 [Warning] 'db' entry 'sys mysql.sys@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:12:57.556776Z 0 [Warning] 'proxies_priv' entry '@ root@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:12:57.559568Z 0 [Warning] 'tables_priv' entry 'sys_config mysql.sys@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:12:57.566006Z 0 [Note] Event Scheduler: Loaded 0 events mysql_1 | 2017-04-08T19:12:57.566173Z 0 [Note] Executing 'SELECT * FROM INFORMATION_SCHEMA.TABLES;' to get a list of tables using the deprecated partition engine. You may use the startup option '--disable-partition-engine-check' to skip this check. mysql_1 | 2017-04-08T19:12:57.566181Z 0 [Note] Beginning of list of non-natively partitioned tables mysql_1 | 2017-04-08T19:12:57.589011Z 0 [Note] End of list of non-natively partitioned tables mysql_1 | 2017-04-08T19:12:57.589226Z 0 [Note] mysqld: ready for connections. mysql_1 | Version: '5.7.17' socket: '/var/run/mysqld/mysqld.sock' port: 0 MySQL Community Server (GPL) mysql_1 | Warning: Unable to load '/usr/share/zoneinfo/iso3166.tab' as time zone. Skipping it. mysql_1 | Warning: Unable to load '/usr/share/zoneinfo/leap-seconds.list' as time zone. Skipping it. mysql_1 | Warning: Unable to load '/usr/share/zoneinfo/zone.tab' as time zone. Skipping it. mysql_1 | 2017-04-08T19:13:03.271270Z 5 [Warning] 'user' entry 'root@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:13:03.271312Z 5 [Warning] 'user' entry 'mysql.sys@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:13:03.271427Z 5 [Warning] 'db' entry 'sys mysql.sys@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:13:03.271458Z 5 [Warning] 'proxies_priv' entry '@ root@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:13:03.271525Z 5 [Warning] 'tables_priv' entry 'sys_config mysql.sys@localhost' ignored in --skip-name-resolve mode. mysql_1 | mysql: [Warning] Using a password on the command line interface can be insecure. mysql_1 | mysql: [Warning] Using a password on the command line interface can be insecure. mysql_1 | mysql: [Warning] Using a password on the command line interface can be insecure. mysql_1 | mysql: [Warning] Using a password on the command line interface can be insecure. mysql_1 | 2017-04-08T19:13:03.305382Z 9 [Warning] 'user' entry 'root@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:13:03.305413Z 9 [Warning] 'user' entry 'mysql.sys@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:13:03.305454Z 9 [Warning] 'db' entry 'sys mysql.sys@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:13:03.305476Z 9 [Warning] 'proxies_priv' entry '@ root@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:13:03.305678Z 9 [Warning] 'tables_priv' entry 'sys_config mysql.sys@localhost' ignored in --skip-name-resolve mode. mysql_1 | mysql_1 | /usr/local/bin/docker-entrypoint.sh: running /docker-entrypoint-initdb.d/mysql-setup.sql mysql_1 | mysql: [Warning] Using a password on the command line interface can be insecure. mysql_1 | mysql_1 | mysql_1 | 2017-04-08T19:13:03.690096Z 0 [Note] Giving 0 client threads a chance to die gracefully mysql_1 | 2017-04-08T19:13:03.690121Z 0 [Note] Shutting down slave threads mysql_1 | 2017-04-08T19:13:03.690134Z 0 [Note] Forcefully disconnecting 0 remaining clients mysql_1 | 2017-04-08T19:13:03.690141Z 0 [Note] Event Scheduler: Purging the queue. 0 events mysql_1 | 2017-04-08T19:13:03.690554Z 0 [Note] Binlog end mysql_1 | 2017-04-08T19:13:03.693384Z 0 [Note] Shutting down plugin 'ngram' mysql_1 | 2017-04-08T19:13:03.693407Z 0 [Note] Shutting down plugin 'BLACKHOLE' mysql_1 | 2017-04-08T19:13:03.693416Z 0 [Note] Shutting down plugin 'partition' mysql_1 | 2017-04-08T19:13:03.693423Z 0 [Note] Shutting down plugin 'ARCHIVE' mysql_1 | 2017-04-08T19:13:03.693430Z 0 [Note] Shutting down plugin 'INNODB_SYS_VIRTUAL' mysql_1 | 2017-04-08T19:13:03.693436Z 0 [Note] Shutting down plugin 'INNODB_SYS_DATAFILES' mysql_1 | 2017-04-08T19:13:03.693448Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLESPACES' mysql_1 | 2017-04-08T19:13:03.693453Z 0 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN_COLS' mysql_1 | 2017-04-08T19:13:03.693458Z 0 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN' mysql_1 | 2017-04-08T19:13:03.693464Z 0 [Note] Shutting down plugin 'INNODB_SYS_FIELDS' mysql_1 | 2017-04-08T19:13:03.693469Z 0 [Note] Shutting down plugin 'INNODB_SYS_COLUMNS' mysql_1 | 2017-04-08T19:13:03.693475Z 0 [Note] Shutting down plugin 'INNODB_SYS_INDEXES' mysql_1 | 2017-04-08T19:13:03.693485Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLESTATS' mysql_1 | 2017-04-08T19:13:03.693494Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLES' mysql_1 | 2017-04-08T19:13:03.693500Z 0 [Note] Shutting down plugin 'INNODB_FT_INDEX_TABLE' mysql_1 | 2017-04-08T19:13:03.693504Z 0 [Note] Shutting down plugin 'INNODB_FT_INDEX_CACHE' mysql_1 | 2017-04-08T19:13:03.693516Z 0 [Note] Shutting down plugin 'INNODB_FT_CONFIG' mysql_1 | 2017-04-08T19:13:03.693521Z 0 [Note] Shutting down plugin 'INNODB_FT_BEING_DELETED' mysql_1 | 2017-04-08T19:13:03.693526Z 0 [Note] Shutting down plugin 'INNODB_FT_DELETED' mysql_1 | 2017-04-08T19:13:03.693539Z 0 [Note] Shutting down plugin 'INNODB_FT_DEFAULT_STOPWORD' mysql_1 | 2017-04-08T19:13:03.693544Z 0 [Note] Shutting down plugin 'INNODB_METRICS' mysql_1 | 2017-04-08T19:13:03.693549Z 0 [Note] Shutting down plugin 'INNODB_TEMP_TABLE_INFO' mysql_1 | 2017-04-08T19:13:03.693561Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_POOL_STATS' mysql_1 | 2017-04-08T19:13:03.693566Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE_LRU' mysql_1 | 2017-04-08T19:13:03.693571Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE' mysql_1 | 2017-04-08T19:13:03.693582Z 0 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX_RESET' mysql_1 | 2017-04-08T19:13:03.693591Z 0 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX' mysql_1 | 2017-04-08T19:13:03.693596Z 0 [Note] Shutting down plugin 'INNODB_CMPMEM_RESET' mysql_1 | 2017-04-08T19:13:03.693601Z 0 [Note] Shutting down plugin 'INNODB_CMPMEM' mysql_1 | 2017-04-08T19:13:03.693612Z 0 [Note] Shutting down plugin 'INNODB_CMP_RESET' mysql_1 | 2017-04-08T19:13:03.693617Z 0 [Note] Shutting down plugin 'INNODB_CMP' mysql_1 | 2017-04-08T19:13:03.693622Z 0 [Note] Shutting down plugin 'INNODB_LOCK_WAITS' mysql_1 | 2017-04-08T19:13:03.693627Z 0 [Note] Shutting down plugin 'INNODB_LOCKS' mysql_1 | 2017-04-08T19:13:03.693632Z 0 [Note] Shutting down plugin 'INNODB_TRX' mysql_1 | 2017-04-08T19:13:03.693637Z 0 [Note] Shutting down plugin 'InnoDB' mysql_1 | 2017-04-08T19:13:03.693723Z 0 [Note] InnoDB: FTS optimize thread exiting. mysql_1 | 2017-04-08T19:13:03.693861Z 0 [Note] InnoDB: Starting shutdown... mysql_1 | 2017-04-08T19:13:03.794185Z 0 [Note] InnoDB: Dumping buffer pool(s) to /var/lib/mysql/ib_buffer_pool mysql_1 | 2017-04-08T19:13:03.794662Z 0 [Note] InnoDB: Buffer pool(s) dump completed at 170408 19:13:03 mysql_1 | 2017-04-08T19:13:05.876853Z 0 [Note] InnoDB: Shutdown completed; log sequence number 12137130 mysql_1 | 2017-04-08T19:13:05.878741Z 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1" mysql_1 | 2017-04-08T19:13:05.878755Z 0 [Note] Shutting down plugin 'MRG_MYISAM' mysql_1 | 2017-04-08T19:13:05.878759Z 0 [Note] Shutting down plugin 'MyISAM' mysql_1 | 2017-04-08T19:13:05.878766Z 0 [Note] Shutting down plugin 'CSV' mysql_1 | 2017-04-08T19:13:05.878769Z 0 [Note] Shutting down plugin 'MEMORY' mysql_1 | 2017-04-08T19:13:05.878772Z 0 [Note] Shutting down plugin 'PERFORMANCE_SCHEMA' mysql_1 | 2017-04-08T19:13:05.878806Z 0 [Note] Shutting down plugin 'sha256_password' mysql_1 | 2017-04-08T19:13:05.878812Z 0 [Note] Shutting down plugin 'mysql_native_password' mysql_1 | 2017-04-08T19:13:05.878945Z 0 [Note] Shutting down plugin 'binlog' mysql_1 | 2017-04-08T19:13:05.879324Z 0 [Note] mysqld: Shutdown complete mysql_1 | mysql_1 | mysql_1 | MySQL init process done. Ready for start up. mysql_1 | mysql_1 | 2017-04-08T19:13:06.092003Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). mysql_1 | 2017-04-08T19:13:06.093344Z 0 [Note] mysqld (mysqld 5.7.17) starting as process 1 ... mysql_1 | 2017-04-08T19:13:06.096367Z 0 [Note] InnoDB: PUNCH HOLE support available mysql_1 | 2017-04-08T19:13:06.096384Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins mysql_1 | 2017-04-08T19:13:06.096388Z 0 [Note] InnoDB: Uses event mutexes mysql_1 | 2017-04-08T19:13:06.096392Z 0 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier mysql_1 | 2017-04-08T19:13:06.096395Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.3 mysql_1 | 2017-04-08T19:13:06.096401Z 0 [Note] InnoDB: Using Linux native AIO mysql_1 | 2017-04-08T19:13:06.096647Z 0 [Note] InnoDB: Number of pools: 1 mysql_1 | 2017-04-08T19:13:06.096754Z 0 [Note] InnoDB: Using CPU crc32 instructions mysql_1 | 2017-04-08T19:13:06.098130Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M mysql_1 | 2017-04-08T19:13:06.106920Z 0 [Note] InnoDB: Completed initialization of buffer pool mysql_1 | 2017-04-08T19:13:06.108924Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority(). mysql_1 | 2017-04-08T19:13:06.121230Z 0 [Note] InnoDB: Highest supported file format is Barracuda. mysql_1 | 2017-04-08T19:13:06.177630Z 0 [Note] InnoDB: Creating shared tablespace for temporary tables mysql_1 | 2017-04-08T19:13:06.177681Z 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ... mysql_1 | 2017-04-08T19:13:06.318428Z 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB. mysql_1 | 2017-04-08T19:13:06.319325Z 0 [Note] InnoDB: 96 redo rollback segment(s) found. 96 redo rollback segment(s) are active. mysql_1 | 2017-04-08T19:13:06.319333Z 0 [Note] InnoDB: 32 non-redo rollback segment(s) are active. mysql_1 | 2017-04-08T19:13:06.319983Z 0 [Note] InnoDB: Waiting for purge to start mysql_1 | 2017-04-08T19:13:06.370150Z 0 [Note] InnoDB: 5.7.17 started; log sequence number 12137130 mysql_1 | 2017-04-08T19:13:06.370709Z 0 [Note] InnoDB: Loading buffer pool(s) from /var/lib/mysql/ib_buffer_pool mysql_1 | 2017-04-08T19:13:06.370902Z 0 [Note] Plugin 'FEDERATED' is disabled. mysql_1 | 2017-04-08T19:13:06.379417Z 0 [Note] InnoDB: Buffer pool(s) load completed at 170408 19:13:06 mysql_1 | 2017-04-08T19:13:06.379831Z 0 [Note] Found ca.pem, server-cert.pem and server-key.pem in data directory. Trying to enable SSL support using them. mysql_1 | 2017-04-08T19:13:06.379987Z 0 [Warning] CA certificate ca.pem is self signed. mysql_1 | 2017-04-08T19:13:06.381505Z 0 [Note] Server hostname (bind-address): '*'; port: 3306 mysql_1 | 2017-04-08T19:13:06.381538Z 0 [Note] IPv6 is available. mysql_1 | 2017-04-08T19:13:06.381546Z 0 [Note] - '::' resolves to '::'; mysql_1 | 2017-04-08T19:13:06.381592Z 0 [Note] Server socket created on IP: '::'. mysql_1 | 2017-04-08T19:13:06.423723Z 0 [Warning] 'user' entry 'root@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:13:06.423773Z 0 [Warning] 'user' entry 'mysql.sys@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:13:06.423830Z 0 [Warning] 'db' entry 'sys mysql.sys@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:13:06.423858Z 0 [Warning] 'proxies_priv' entry '@ root@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:13:06.427878Z 0 [Warning] 'tables_priv' entry 'sys_config mysql.sys@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:13:06.432194Z 0 [Note] Event Scheduler: Loaded 0 events mysql_1 | 2017-04-08T19:13:06.432359Z 0 [Note] Executing 'SELECT * FROM INFORMATION_SCHEMA.TABLES;' to get a list of tables using the deprecated partition engine. You may use the startup option '--disable-partition-engine-check' to skip this check. mysql_1 | 2017-04-08T19:13:06.432365Z 0 [Note] Beginning of list of non-natively partitioned tables mysql_1 | 2017-04-08T19:13:06.448394Z 0 [Note] End of list of non-natively partitioned tables mysql_1 | 2017-04-08T19:13:06.448499Z 0 [Note] mysqld: ready for connections. mysql_1 | Version: '5.7.17' socket: '/var/run/mysqld/mysqld.sock' port: 3306 MySQL Community Server (GPL)
Notice Docker Compose merge the output logs from all the service containers.
To list all the running service containers, execute the following command:
$ docker-compose ps
The following would be a typical output:
Name Command State Ports ----------------------------------------------------------------------------------- hello_mysql_1 docker-entrypoint.sh mysqld Up 3306/tcp hello_tomcat_1 catalina.sh run Up 0.0.0.0:8080->8080/tcp
Open a browser on the local host and access the URL http://localhost:8080/helloworld3/message. The following would be a typical view:
YIPPEE !!! we have successfully demonstrated launching an application stack with multiple Docker containers using the simple orchestration tool Docker Compose.
To stop the business tier and data tier service containers, execute the following command:
$ docker-compose stop
The following would be a typical output:
Stopping hello_tomcat_1 ... done Stopping hello_mysql_1 ... done
To list all the running service containers (none should be running at this point), execute the following command:
$ docker-compose ps
The following would be a typical output:
Name Command State Ports ------------------------------
To re-start the business tier and data tier service containers in the background, execute the following command:
$ docker-compose up -d
The following would be a typical output:
Creating hello_mysql_1 Creating hello_tomcat_1
To view the combined logs of the service containers running in the background, execute the following command:
$ docker-compose logs
The following would be a typical output:
Attaching to hello_tomcat_1, hello_mysql_1 mysql_1 | 2017-04-08T19:44:18.586103Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). mysql_1 | 2017-04-08T19:44:18.587492Z 0 [Note] mysqld (mysqld 5.7.17) starting as process 1 ... mysql_1 | 2017-04-08T19:44:18.590585Z 0 [Note] InnoDB: PUNCH HOLE support available mysql_1 | 2017-04-08T19:44:18.590612Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins mysql_1 | 2017-04-08T19:44:18.590615Z 0 [Note] InnoDB: Uses event mutexes mysql_1 | 2017-04-08T19:44:18.590619Z 0 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier mysql_1 | 2017-04-08T19:44:18.590622Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.3 mysql_1 | 2017-04-08T19:44:18.590625Z 0 [Note] InnoDB: Using Linux native AIO mysql_1 | 2017-04-08T19:44:18.590876Z 0 [Note] InnoDB: Number of pools: 1 mysql_1 | 2017-04-08T19:44:18.590970Z 0 [Note] InnoDB: Using CPU crc32 instructions mysql_1 | 2017-04-08T19:44:18.592462Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M mysql_1 | 2017-04-08T19:44:18.602399Z 0 [Note] InnoDB: Completed initialization of buffer pool mysql_1 | 2017-04-08T19:44:18.604684Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority(). mysql_1 | 2017-04-08T19:44:18.616845Z 0 [Note] InnoDB: Highest supported file format is Barracuda. tomcat_1 | 08-Apr-2017 19:44:19.831 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version: Apache Tomcat/8.5.13 mysql_1 | 2017-04-08T19:44:18.671676Z 0 [Note] InnoDB: Creating shared tablespace for temporary tables tomcat_1 | 08-Apr-2017 19:44:19.833 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built: Mar 27 2017 14:25:04 UTC mysql_1 | 2017-04-08T19:44:18.671741Z 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ... tomcat_1 | 08-Apr-2017 19:44:19.833 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server number: 8.5.13.0 mysql_1 | 2017-04-08T19:44:18.804051Z 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB. tomcat_1 | 08-Apr-2017 19:44:19.833 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name: Linux mysql_1 | 2017-04-08T19:44:18.805811Z 0 [Note] InnoDB: 96 redo rollback segment(s) found. 96 redo rollback segment(s) are active. tomcat_1 | 08-Apr-2017 19:44:19.833 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version: 4.4.0-53-generic mysql_1 | 2017-04-08T19:44:18.805829Z 0 [Note] InnoDB: 32 non-redo rollback segment(s) are active. tomcat_1 | 08-Apr-2017 19:44:19.833 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture: amd64 mysql_1 | 2017-04-08T19:44:18.806826Z 0 [Note] InnoDB: 5.7.17 started; log sequence number 12139149 tomcat_1 | 08-Apr-2017 19:44:19.833 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home: /usr/lib/jvm/java-8-openjdk-amd64/jre mysql_1 | 2017-04-08T19:44:18.807437Z 0 [Note] InnoDB: Loading buffer pool(s) from /var/lib/mysql/ib_buffer_pool tomcat_1 | 08-Apr-2017 19:44:19.834 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version: 1.8.0_121-8u121-b13-1~bpo8+1-b13 mysql_1 | 2017-04-08T19:44:18.807630Z 0 [Note] Plugin 'FEDERATED' is disabled. tomcat_1 | 08-Apr-2017 19:44:19.834 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor: Oracle Corporation mysql_1 | 2017-04-08T19:44:18.811271Z 0 [Note] InnoDB: Buffer pool(s) load completed at 170408 19:44:18 tomcat_1 | 08-Apr-2017 19:44:19.834 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE: /usr/local/tomcat mysql_1 | 2017-04-08T19:44:18.816827Z 0 [Note] Found ca.pem, server-cert.pem and server-key.pem in data directory. Trying to enable SSL support using them. tomcat_1 | 08-Apr-2017 19:44:19.834 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME: /usr/local/tomcat tomcat_1 | 08-Apr-2017 19:44:19.834 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=/usr/local/tomcat/conf/logging.properties mysql_1 | 2017-04-08T19:44:18.817029Z 0 [Warning] CA certificate ca.pem is self signed. tomcat_1 | 08-Apr-2017 19:44:19.834 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager mysql_1 | 2017-04-08T19:44:18.818676Z 0 [Note] Server hostname (bind-address): '*'; port: 3306 tomcat_1 | 08-Apr-2017 19:44:19.834 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djdk.tls.ephemeralDHKeySize=2048 mysql_1 | 2017-04-08T19:44:18.818702Z 0 [Note] IPv6 is available. tomcat_1 | 08-Apr-2017 19:44:19.835 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.protocol.handler.pkgs=org.apache.catalina.webresources mysql_1 | 2017-04-08T19:44:18.818711Z 0 [Note] - '::' resolves to '::'; tomcat_1 | 08-Apr-2017 19:44:19.835 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=/usr/local/tomcat mysql_1 | 2017-04-08T19:44:18.818731Z 0 [Note] Server socket created on IP: '::'. tomcat_1 | 08-Apr-2017 19:44:19.835 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=/usr/local/tomcat mysql_1 | 2017-04-08T19:44:18.872396Z 0 [Warning] 'user' entry 'root@localhost' ignored in --skip-name-resolve mode. tomcat_1 | 08-Apr-2017 19:44:19.835 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=/usr/local/tomcat/temp mysql_1 | 2017-04-08T19:44:18.872438Z 0 [Warning] 'user' entry 'mysql.sys@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:44:18.872477Z 0 [Warning] 'db' entry 'sys mysql.sys@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:44:18.872498Z 0 [Warning] 'proxies_priv' entry '@ root@localhost' ignored in --skip-name-resolve mode. mysql_1 | 2017-04-08T19:44:18.875986Z 0 [Warning] 'tables_priv' entry 'sys_config mysql.sys@localhost' ignored in --skip-name-resolve mode. tomcat_1 | 08-Apr-2017 19:44:19.835 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent Loaded APR based Apache Tomcat Native library 1.2.12 using APR version 1.5.1. mysql_1 | 2017-04-08T19:44:18.884004Z 0 [Note] Event Scheduler: Loaded 0 events tomcat_1 | 08-Apr-2017 19:44:19.835 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true]. mysql_1 | 2017-04-08T19:44:18.884113Z 0 [Note] Executing 'SELECT * FROM INFORMATION_SCHEMA.TABLES;' to get a list of tables using the deprecated partition engine. You may use the startup option '--disable-partition-engine-check' to skip this check. tomcat_1 | 08-Apr-2017 19:44:19.835 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true] mysql_1 | 2017-04-08T19:44:18.884119Z 0 [Note] Beginning of list of non-natively partitioned tables tomcat_1 | 08-Apr-2017 19:44:19.838 INFO [main] org.apache.catalina.core.AprLifecycleListener.initializeSSL OpenSSL successfully initialized (OpenSSL 1.1.0e 16 Feb 2017) mysql_1 | 2017-04-08T19:44:18.898765Z 0 [Note] End of list of non-natively partitioned tables tomcat_1 | 08-Apr-2017 19:44:19.900 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8080"] mysql_1 | 2017-04-08T19:44:18.898956Z 0 [Note] mysqld: ready for connections. tomcat_1 | 08-Apr-2017 19:44:19.913 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read mysql_1 | Version: '5.7.17' socket: '/var/run/mysqld/mysqld.sock' port: 3306 MySQL Community Server (GPL) tomcat_1 | 08-Apr-2017 19:44:19.915 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-nio-8009"] tomcat_1 | 08-Apr-2017 19:44:19.916 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read tomcat_1 | 08-Apr-2017 19:44:19.917 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 387 ms tomcat_1 | 08-Apr-2017 19:44:19.933 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service Catalina tomcat_1 | 08-Apr-2017 19:44:19.933 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.5.13 tomcat_1 | 08-Apr-2017 19:44:19.979 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deploying web application archive /usr/local/tomcat/webapps/helloworld3.war tomcat_1 | 08-Apr-2017 19:44:20.299 WARNING [localhost-startStop-1] org.apache.tomcat.dbcp.dbcp2.BasicDataSourceFactory.getObjectInstance Name = hellodb Property removeAbandoned is not used in DBCP2, use one or both of removeAbandonedOnBorrow or removeAbandonedOnMaintenance instead. Both have default value set to false. You have set value of "true" for "removeAbandoned" property, which is being ignored. tomcat_1 | 08-Apr-2017 19:44:20.336 INFO [localhost-startStop-1] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. tomcat_1 | INFO 2017-04-08 19:44:20,402 [localhost-startStop-1] com.polarsparc.HelloServlet3 - Servlethas been initialized tomcat_1 | tomcat_1 | 08-Apr-2017 19:44:20.409 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application archive /usr/local/tomcat/webapps/helloworld3.war has finished in 429 ms tomcat_1 | 08-Apr-2017 19:44:20.409 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat/webapps/manager tomcat_1 | 08-Apr-2017 19:44:20.433 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat/webapps/manager has finished in 24 ms tomcat_1 | 08-Apr-2017 19:44:20.433 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat/webapps/examples tomcat_1 | 08-Apr-2017 19:44:20.606 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat/webapps/examples has finished in 173 ms tomcat_1 | 08-Apr-2017 19:44:20.607 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat/webapps/ROOT tomcat_1 | 08-Apr-2017 19:44:20.625 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat/webapps/ROOT has finished in 18 ms tomcat_1 | 08-Apr-2017 19:44:20.625 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat/webapps/docs tomcat_1 | 08-Apr-2017 19:44:20.637 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat/webapps/docs has finished in 12 ms tomcat_1 | 08-Apr-2017 19:44:20.637 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat/webapps/host-manager tomcat_1 | 08-Apr-2017 19:44:20.652 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat/webapps/host-manager has finished in 15 ms tomcat_1 | 08-Apr-2017 19:44:20.654 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"] tomcat_1 | 08-Apr-2017 19:44:20.660 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-8009"] tomcat_1 | 08-Apr-2017 19:44:20.663 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 746 ms
Once again, open a browser on the local host and access the URL http://localhost:8080/helloworld3/message. The following would be a typical view:
As is evident from the logs in Output.8 above as well as the browser view in Figure.2 above, the database is preserved (due to the volumes option) and we see the next count compared to the browser view in Figure.1.
References