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Deployment Issues

How to reinstall?​

  1. Stop the HAP service that may have been running, execute bash . /service.sh stopall (output stopped if successful) in root directory of manager;
  2. Back up the files of the HAP service, mv /data/mingdao/ /home/hapbak/ (you can customize the target location of the backup, usually not needed for the first deployment, it can be rm -rf /data/mingdao/);
  3. Confirm again that it is cleaned up. Execute docker ps | grep mingdaoyun, netstat -ntpl | grep 38881, and ps -ef | grep 'mingdaoyun\|service.sh' | grep -v grep respectively to ensure that the output is empty;
  4. Restart the manager with bash . /service.sh start, and visit http://{server IP}:38881 to install again.

Failed to initialize?​

You can check the reason of failure by executing the command cat /data/mingdao/script/mingdaoyun.log. In most cases, it is due to insufficient space, mirror not exist, port occupied, iptables failed, etc. If iptables failed, the reason is that closing the firewall will clear the iptables rules, so you need to restart Docker and regenerate default iptables rules, and [reinstall](#How to reinstall) after fixing the problem.

Unable to access the Internet in the container?​

Using firewalld as a firewall, if the container can not access the external network (under normal circumstances, HAP services do not need to interoperate with the Internet, but inevitably some system features need the Internet, such as sending mail, and SMS), you need to add the following firewall rules. Execute both 2 commands (172.16.0.1/ 12 is the network segment in the container):

Allow the network segment in the container to access the Internet (permanent effect)

firewall-cmd --zone=trusted --add-source=172.16.0.1/12 --permanent

Allow the network segment in the container to access the Internet (temporary effect)

firewall-cmd --zone=trusted --add-source=172.16.0.1/12

How to set the startup (CentOS as an example)?​

Make sure it has execution permissions chmod +x /etc/rc.d/rc.local

Modify /etc/rc.d/rc.local (make sure the file has executable permissions), adding the following script:

sleep 30
docker system prune -f
/bin/rm -f {manager absolute path}/service.pid
/bin/bash {manager absolute path}/service.sh startall

HAP service does not start properly after restarting the server?​

Execute bash . /service.sh stopall in the root directory of the manager, if service.pid still exists, delete rm -f service.pid, execute bash . /service.sh startall and wait for the command to finish.

What if the key is lost and server id is not displayed?​

  1. Stop the service, and execute bash . /service.sh stopall in the root directory of manager;
  2. Execute the command ps -ef | grep 'mingdaoyun\|service.sh' | grep -v grep (if there is output, kill all corresponding pid);
  3. Execute bash . /service.sh startall and wait for the command to finish.

After restarting HAP service due to power failure and other unexpected circumstances, workflow, statistics and other features still can not be used as normal?​

  1. Stop the service, and execute bash . /service.sh stopall in the root directory of manager;
  2. Back up /data/mingdao/;
  3. Execute the command rm -rf /data/mingdao/script/volume/data/{kafka,zookeeper}/* to remove abnormal data from the message queue, which will not cause data loss in normal conditions (unless there is an unfinished workflow);
  4. Execute bash . /service.sh startall in the root directory of manager and wait for the command to finish.

Documents cannot be previewed online?​

Since the document preview service needs to read files from the microservice application, if the intranet environment cannot access the system's external access address, the document preview will fail. In this case, you need to add the environment variable ENV_FILE_INNER_URI to the doc configuration of docker-compose.yaml to specify the system intranet access address. Refer to the following:

services:
  doc:
    environment:
      ENV_FILE_INNER_URI: "10.140.100.6:8880"

Failed to export a worksheet as Excel?​

Due to the amount of data in some worksheets, when exporting, there will be 504 Gateway Time-out, etc. This is generally due to the default timeout time and file size limits of the proxy layer, the following rules can be added (nginx as an example):

location ~ /excelapi {
  proxy_set_header Host $http_host;
  proxy_read_timeout 1800s;
  client_max_body_size  256m;
  proxy_pass http://hap;  # Here to modify according to the actual upstream name
}

Interface timed out for uploading attachments?​

When uploading files over 4MB, it takes a slice upload mode by default. In some cases, the network may cause a timeout for uploading a particular slice, thus failed to upload the entire file. To solve this problem, add the following rules (nginx as an example)

location ~ /file {
  proxy_set_header   Host $http_host;
  proxy_read_timeout 3600s;
  client_max_body_size  20480m;
  proxy_pass http://hap; # Here to modify according to the actual upstream name
}

Failed to load workflow list, or unable to download attachments?​

In the case of adding proxy to HAP service, you need to ensure that the relevant environment variables in /data/mingdao/script/docker-compose.yaml are the same as the access address when using proxy address for access, and you also need to ensure that the proxy configuration contains all the recommended configuration. View more details in set proxy.

How to enable subpath deployment?​

Adjust the environment variable ENV_MINGDAO_SUBPATH in docker-compose.yaml corresponding to the microservice application, as follows:

services:
  app:
    environment:
      ENV_MINGDAO_SUBPATH: "/hap"       # Add, e.g. /hap

How to enable two access addresses?​

Set environment variables ENV_EXT_MINGDAO_PROTO, ENV_EXT_MINGDAO_HOST, ENV_EXT_MINGDAO_PORT in docker-compose.yaml corresponding to the microservice application (*a set of configuration corresponding to ENV_MINGDAO_PROTO, ENV_MINGDAO_HOST, ENV_MINGDAO_PORT). Expose port 18880 (the corresponding host port is customizable, here still use 18880), and resolve http://hap1.domain.com to port 18880 of the host (if you use the host's internal and external IP directly, you can ignore the domain name resolution configuration), as follows:

services:
  app:
    environment:
      ENV_EXT_MINGDAO_PROTO: "http" 
      ENV_EXT_MINGDAO_HOST: "hap1.domain.com"
      ENV_EXT_MINGDAO_PORT: "80"
    ports:
      - 8880:8880
      - 18880:18880

How to modify the default storage path /data/mingdao?​

New installation

Version 3.6.0 and later​

Before starting HAP manager (before executing . /service.sh start), modify the installDir parameter value in service.sh.

Version before 3.6.0​

Before starting HAP manager (before executing . /service.sh start), create /etc/pdcaptain.json, and specify the dataDir property. The related files will be stored in the directory /app/hap after the startup, with the following configuration:

{ 
  "dataDir": "/app/hap" 
}

Migration

Version 3.6.0 and later​

For the installed HAP, modify the installDir parameter value in service.sh. If the HAP service is stopped, move all the files in /data/mingdao to installDir and restart the service.

Version before 3.6.0​

For the installed HAP, create /etc/pdcaptain.json and specify the data storage directory dataDir. If the HAP service is stopped, move all the files in the /data/mingdao to dataDir and restart the service.

How to access each storage component externally?​

In standalone deployment mode, each dependent storage component, including mysql, mongodb, redis, kafka, file, elasticsearch, is started in the container by default, and the ports of these components are not exposed to the external by default. If you need external connections, you can expose the corresponding ports by modifying the ports field in docker-compose.yaml corresponding to the microservice application, as follows:

Please read the documentation about data security carefully before operation ⚠️⚠️⚠️

services:
  app:
    ports
    - 8880:8880
    - 3306:3306   # mysql
    - 27017:27017 # mongodb
    - 6379:6379   # redis
    - 9092:9092   # kafka
    - 9000:9000   # file
    - 9200:9200   # elasticsearch

How to partially enable external storage components in standalone deployment mode?​

Set the environment variable ENV_STANDALONE_DISABLE_SERVICES in docker-compose.yaml corresponding to the microservice application, which supports setting mysql, mongodb, redis, kafka, file, elasticsearch , as follows:

services:
  app:
    environment:
      ENV_STANDALONE_DISABLE_SERVICES: "redis,file"  # If there is more than one, separate them with English commas

To enable the custom storage component, you need to configure the connection address of the corresponding service via environment variable, refer to environment variable description.

How to customize the maximum memory for mongodb?​

Set the environment variable ENV_MONGODB_CACHEGB in docker-compose.yaml corresponding to the microservice application. It defaults to (physical memory-10)/2 (in G), as follows:

services:
  app:
    environment:
      ENV_MONGODB_CACHEGB: 3

How to be referenced by other systems via IFrame?​

By default, it is supported to be used by IFrame embedded in the same domain. If you want to be introduced by other systems, you can set environment variable ENV_FRAME_OPTIONS by modifying docker-compose.yaml corresponding to microservice application, supporting ALLOWALL, SAMEORIGIN, DENY, ALLOW-FROM uri.

services:
  app:
    environment:
      ENV_FRAME_OPTIONS: "ALLOWALL"

How to customize the timeout for webhook execution in workflows?​

Set the environment variable ENV_WORKFLOW_WEBHOOK_TIMEOUT in docker-compose.yaml corresponding to the microservice application, with a default of 10 (in seconds), as follows:

services:
  app:
    environment:
      ENV_WORKFLOW_WEBHOOK_TIMEOUT: 30

How to customize the timeout for code block execution in workflows?​

Set the environment variable ENV_WORKFLOW_COMMAND_TIMEOUT in docker-compose.yaml corresponding to the microservice application, with a default of 10 (in seconds), as follows:

services:
  app:
    environment:
      ENV_WORKFLOW_COMMAND_TIMEOUT: 30

How to customize the maximum memory for code block execution in workflows?​

Set the environment variable ENV_WORKFLOW_COMMAND_MAXMEMORY in docker-compose.yaml corresponding to the microservice application, with a default of 64 (in M), as follows:

services:
  app:
    environment:
      ENV_WORKFLOW_COMMAND_MAXMEMORY: 128

How to customize consumer threads of message queues in workflows?​

Before modifying the consumer threads of message queues, you need to adjust the number of partitions of the related Topic (WorkFlow, WorkFlow-Batch, WorkFlow-Button, WorkFlow-Process, WorkSheet, WorkSheet- Batch) in Kafka, with a default of 3. The number of consumer threads set cannot be greater than the number of partitions.

  1. Enter the container: docker exec -it $(docker ps | grep '\-sc' | awk '{print $1}') bash

  2. Execute the following command to see the number of existing partitions and message stacking

    /usr/local/kafka/bin/kafka-consumer-groups.sh --bootstrap-server ${ENV_KAFKA_ENDPOINTS:=127.0.0.1:9092} --describe --group md-workflow-consumer

  3. If necessary, the following commands can be executed separately to adjust the number of partitions (e.g. adjust to 10 partitions)

    /usr/local/kafka/bin/kafka-topics.sh --alter --zookeeper localhost:2181 --partitions 10 --topic WorkFlow
    /usr/local/kafka/bin/kafka-topics.sh --alter --zookeeper localhost:2181 --partitions 10 --topic WorkFlow-Batch 
    /usr/local/kafka/bin/kafka-topics.sh --alter --zookeeper localhost:2181 --partitions 10 --topic WorkFlow-Button 
    /usr/local/kafka/bin/kafka-topics.sh --alter --zookeeper localhost:2181 --partitions 10 --topic WorkFlow-Process
    /usr/local/kafka/bin/kafka-topics.sh --alter --zookeeper localhost:2181 --partitions 10 --topic WorkSheet 
    /usr/local/kafka/bin/kafka-topics.sh --alter --zookeeper localhost:2181 --partitions 10 --topic WorkSheet-Batch

  4. Set the environment variable ENV_WORKFLOW_CONSUMER_THREADS in docker-compose.yaml corresponding to the microservice application, with a default of 3 (do not set the value too large, making sure the server can handle it), as follows:

    services:
      app:
        environment:
          ENV_WORKFLOW_CONSUMER_THREADS: 10

How to customize the delays for workflows triggerred by event from worksheet?​

Set the environment variable ENV_WORKFLOW_TRIGER_DELAY_SECONDS in docker-compose.yaml corresponding to the microservice application, with a default of 5 (in seconds), as follows:

services:
  app:
    environment:
      ENV_WORKFLOW_TRIGER_DELAY_SECONDS: 1

How to customize consumer threads of message queues in worksheets?​

Before modifying the consumer threads of message queues, you need to adjust the number of partitions of the related Topic (ws-editcontrols, ws-passiverelation) in Kafka, with a default of 3. Do not set the number of consumer threads larger than the number of partitions.

  1. Enter the container: docker exec -it $(docker ps | grep '\-sc' | awk '{print $1}') bash

  2. Execute the following command to see the number of partitions and message stacking

    /usr/local/kafka/bin/kafka-consumer-groups.sh --bootstrap-server ${ENV_KAFKA_ENDPOINTS:=127.0.0.1:9092} --describe --group worksheet-passiverelation
    /usr/local/kafka/bin/kafka-consumer-groups.sh --bootstrap-server ${ENV_KAFKA_ENDPOINTS:=127.0.0.1:9092} --describe --group worksheet-editcontrols

  3. If necessary, the following commands can be executed separately to adjust the number of partitions (e.g. adjust to 10 partitions)

    /usr/local/kafka/bin/kafka-topics.sh --alter --zookeeper localhost:2181 --partitions 10 --topic ws-editcontrols
    /usr/local/kafka/bin/kafka-topics.sh --alter --zookeeper localhost:2181 --partitions 10 --topic ws-passiverelation

  4. Set the environment variable ENV_WORKSHEET_CONSUMER_THREADS in docker-compose.yaml corresponding to the microservice application, with a default of 2 (do not set the value too large, making sure the server can handle it), as follows:

    services:
      app:
        environment:
          ENV_WORKSHEET_CONSUMER_THREADS: 10

How to customize the style of function module?​

  1. Create custom style files (like freestyle.css), locate and get element identifiers (like html tag, id, class) through the function of reviewing elements on the web page, and set custom styles (like hiding function modules, adjusting fonts or background colors)

    /* hide the message module */
    #chat {display:none!important }

  2. In the docker-compose.yaml corresponding to the microservice application, mount the custom style file into the container (/usr/local/MDPrivateDeployment/www/staticfiles/mdcss/freestyle.css) and restart the service to take effect: ``

    services:
      app:
        volumes:
          - freestyle.css host path:/usr/local/MDPrivateDeployment/www/staticfiles/mdcss/freestyle.css

Go to https://github.com/mingdaocom/pd-openweb for source code to complete more custom development.

How to add global Javascript scripts?​

By adding a global Javascript script, you can introduce some data analysis engines such as Baidu Statistics, Google Statistics, GrowingIO, SENSORS, etc. to monitor the usage status of the system.

  1. Create a file of custom extension scripts (like freestyle.js) and copy the third-party provided scripts into the file. Generally, the third-party scripts need to refer to basic user information such as user unique identifiers, which developers can obtain through the global Javascript object md.global.Account provided by the HAP system.

  2. In the docker-compose.yaml corresponding to the microservice application, mount the file of the extension script into the container (/usr/local/MDPrivateDeployment/www/staticfiles/mdjs/freestyle.js) and restart the service to take effect: ```:

    services:
      app:
        volumes:
          - freestyle.js host path:/usr/local/MDPrivateDeployment/www/staticfiles/mdjs/freestyle.js

Go to https://github.com/mingdaocom/pd-openweb for source code to complete more custom development.

How to customize the expiration time of login status?​

Set the environment variable ENV_SESSION_TIMEOUT_MINUTES in docker-compose.yaml corresponding to the microservice application, with a default of 10080 (in minutes), as follows:

services:
  app:
    environment:
      ENV_SESSION_TIMEOUT_MINUTES: 30

How to customize whether or not verification code appears every time you log in?​

Set the environment variable ENV_LOGIN_CAPTCHA_LIMIT_COUNT in docker-compose.yaml of the microservice application. If set to 0, the verification code will appear every time, as follows:

services:
  app:
    environment:
      ENV_LOGIN_CAPTCHA_LIMIT_COUNT: 0

How to customize the black and white list for the format of uploaded files?​

Set environment variable ENV_FILEEXT_BLOCKLIST (blacklist, default value: .exe,.vbs,.bat,.cmd,.com,.sh) and ENV_FILEEXT_ALLOWLIST (whitelist, default value: .exe,.vbs,.bat,.cmd,.com,.sh) in docker-compose.yaml corresponding to [standalone mode] of microservice application or [cluster mode] of file storage service to control the uploaded file formats. When ENV_FILEEXT_ALLOWLIST is set, ENV_FILEEXT_BLOCKLIST will be invalid automatically, as follows:

services:
  app:
    environment:
      ENV_FILEEXT_BLOCKLIST: ".exe,.sh,.html"
      ENV_FILEEXT_ALLOWLIST: ".docx,.txt,.png"

How to customize the expiration time of token for attachment uploads or downloads?​

Set the environment variable ENV_FILE_UPLOAD_TOKEN_EXPIRE_MINUTES in docker-compose.yaml corresponding to the microservice application. The expiration time of the token for file uploading defaults to 120 (in minutes); set the environment variable ENV_FILE_DOWNLOAD_TOKEN_EXPIRE_MINUTES and the expiration time of the token for file downloading defaults to 60 (in minutes), as follows:

services:
  app:
    environment:
      ENV_FILE_UPLOAD_TOKEN_EXPIRE_MINUTES: 10
      ENV_FILE_DOWNLOAD_TOKEN_EXPIRE_MINUTES: 10

How to enable the OCR control when configuring form?​

  1. Enable Tencent Cloud General OCR service at https://cloud.tencent.com/product/generalocr

  2. Go to the menu under the user name in the upper right corner, [Access Management] > [Access Key] > [API Key Management], to create a new key or get an existing key

  3. Set the environment variables ENV_OCR_SECRETID (corresponding to SecretId of the key) and ENV_OCR_SECRETKEY (corresponding to SecretKey of the key) in docker-compose.yaml of the microservice application

    services:
      app:
        environment:
          ENV_OCR_SECRETID: "SecretId"
          ENV_OCR_SECRETKEY: "SecretKey"

How to enable the PDF type in [Print Record] node in workflows?​

  1. Go to https://open.wps.cn/ to sign up WPS open platform, and go to the management center to submit service provider information

  2. After the application is approved, enter the "Kingsoft Document Format Conversion" service and add a new application, get the APPID and APPKEY

  3. set the environment variables ENV_WPS_APPID, and ENV_WPS_APPSECRET in docker-compose.yaml corresponding to the microservice application

    services:
      app:
        environment:
          ENV_WPS_APPID: "APPID"
          ENV_WPS_APPSECRET: "APPKEY"

How to change the Web front-end to refer to CDN resources?​

  1. Purchase CDN service from cloud market (e.g. Tencent Cloud, Alibaba Cloud). If you already have a CDN service, ignore it.
  2. Set the acceleration domain name and configure back to the source site (the access address of HAP system)
  3. Set the environment variable ENV_CDN_URI in docker-compose.yaml corresponding to the microservice application, such as http://hapcdn.domain.com
    services:
      app:
        environment:
          ENV_CDN_URI: "acceleration domain name"