Shulou(Shulou.com)06/01 Report--

The problem of deploying the same machine in multiple clusters of pd

-- 2019-04-25 Spring Thunder

1. Summary 1.1, questions

The pd of multiple tidb clusters is deployed on the same machine, and the service of pd is the same, which causes pd to fail to start.

Version: 2.1.2

1.2. Problem and solution

Modify the port part of the related files to solve the problem

2. Specific 2.1, specific issues 2.1.1, system services

/ etc/systemd/system

Pd.service

2.1.2, start and stop script of pd

[${deploy_dir} / scripts/start_pd.sh]

#! / bin/bash

Set-e

# WARNING: This file was auto-generated. Do not edit!

# All your edit might be overwritten!

Sudo systemctl start pd.service

[${deploy_dir} / scripts/stop_pd.sh]

#! / bin/bash

Set-e

# WARNING: This file was auto-generated. Do not edit!

# All your edit might be overwritten!

Sudo systemctl stop pd.service

2.2, repair

Tidb central control computer:

[1. Change the deployed]

/ work/tidb/tidb-ansible-2.1/roles/pd/tasks/ systemd_deployment.yml

Change:

Service_name: pd- {{pd_client_port}}

[2, rolling upgrade]

/ work/tidb/tidb-ansible-2.1/ rolling_update.yml

Change:

-name: stop PD by systemd

Systemd: name=pd-{{pd_client_port}} .service state=stopped

-name: start PD by systemd

Systemd: name=pd-{{pd_client_port}} .service state=started

[3. Change start]

/ work/tidb/tidb-ansible-2.1/ start.yml

-name: start PD by systemd

Systemd: name=pd- {{pd_client_port}} .service state=started

2.3. Results after repair

Manually delete the target pd machine's:

${deploy_dir} / scripts/start_pd.sh

${deploy_dir} / scripts/stop_pd.sh

${deploy_dir} / scripts/run_pd.sh

The central control computer is redeployed:

Ansible-playbook deploy.yml-l pd machine IP

Check:

Start_pd.sh

#! / bin/bash

Set-e

# WARNING: This file was auto-generated. Do not edit!

# All your edit might be overwritten!

Sudo systemctl start pd-10000 .service

Stop_pd.sh

#! / bin/bash

Set-e

# WARNING: This file was auto-generated. Do not edit!

# All your edit might be overwritten!

Sudo systemctl stop pd-10000 .service

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Cd / etc/systemd/system

Pd-10000 .service

Enable:

Ansible-playbook start.yml

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