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PMM-12153: Async replication for Percona Server (#129) (#130)
* PMM-12153: Async replication for Percona Server (#129) * PMM-12153: Split group replication * PMM-12153: Split group replication * PMM-12153: Split group replication * PMM-12153: Correct pmm server port * PMM-12153: Refactor * PMM-7: download percona release and print client version * PMM-7: download percona release and print client version * PMM-7: reorder steps * PMM-7: reorder steps * PMM-7: reorder steps * PMM-7: reorder steps * Update pmm_qa/percona_server/percona-server-setup.yml Co-authored-by: Alex Demidoff <[email protected]> * Update pmm_qa/pmm-framework.py Co-authored-by: Alex Demidoff <[email protected]> --------- Co-authored-by: Alex Demidoff <[email protected]>
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‎pmm_qa/percona_server/data/init-async-replication.sql.j2

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-- Create replication user and grant necessary privileges
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SET SQL_LOG_BIN=0;
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CREATE USER '{{ replication_user }}'@'%' IDENTIFIED WITH 'caching_sha2_password' BY '{{ replication_password }}' REQUIRE NONE;
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GRANT REPLICATION SLAVE ON *.* TO '{{ replication_user }}'@'%';
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GRANT CONNECTION_ADMIN ON *.* TO '{{ replication_user }}'@'%';
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GRANT BACKUP_ADMIN ON *.* TO '{{ replication_user }}'@'%';
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FLUSH PRIVILEGES;
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SET SQL_LOG_BIN=1;
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{% if item == 1 %}
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-- Primary server: enable binary logging for replication
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FLUSH BINARY LOGS;
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{% endif %}

‎pmm_qa/percona_server/data/my-async-replication.cnf.j2

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[mysqld]
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# General server configuration
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server_id={{ item }}
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bind-address=0.0.0.0
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port={{ mysql_listen_port }}
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# Authentication settings for caching_sha2_password
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caching_sha2_password_auto_generate_rsa_keys=ON
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# The following two parameters tell MySQL where to store the RSA key pair
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caching_sha2_password_private_key_path=private_key.pem
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caching_sha2_password_public_key_path=public_key.pem
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# Replication settings
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gtid_mode=ON
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enforce_gtid_consistency=ON
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log_bin=binlog
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log_replica_updates=ON
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sync_binlog=1
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binlog_checksum=NONE
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disabled_storage_engines="MyISAM,BLACKHOLE,FEDERATED,ARCHIVE,MEMORY"
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# MacOS-specific, where table names are case-sensitive
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lower_case_table_names=2
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# MySQL 8.4 compatibility settings
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report_host=ps_pmm_{{ ps_version }}_{{ item }}
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# Replica configuration - applies to all nodes except primary (they'll be able to become replicas)
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{% if item != 1 %}
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# Replica specific settings
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replica_parallel_workers=4
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replica_parallel_type=LOGICAL_CLOCK
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replica_preserve_commit_order=1
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{% endif %}
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# Crash-safe replication settings
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relay-log=ps_pmm_{{ ps_version }}_{{ item }}-relay-bin
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relay_log_recovery=ON
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relay_log_purge=ON
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# Performance and connection settings
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max_connections=1000
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innodb_buffer_pool_size=256M

‎pmm_qa/percona_server/percona-server-setup.yml

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@@ -22,8 +22,19 @@
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admin_password: "{{ lookup('vars', 'extra_admin_password', default=lookup('env','ADMIN_PASSWORD') | default('admin', true) ) }}"
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query_source: "{{ lookup('env', 'QUERY_SOURCE') | default('perfschema', true) }}"
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setup_type: "{{ lookup('env', 'SETUP_TYPE') }}"
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random_service_name_value: ""
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tasks:
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- name: Mofidy the node count for group replication
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set_fact:
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nodes_count: 3
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when: nodes_count | int < 3 and setup_type == "gr"
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- name: Chance to correct nodes count for async replication
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set_fact:
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nodes_count: 2
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when: nodes_count | int < 2 and setup_type == "replication"
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- name: Create Docker network
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community.docker.docker_network:
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name: "{{ network_name }}"
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mode: '0755'
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loop: "{{ range(1, nodes_count | int + 1) | list }}"
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- name: Generate my.cnf for each node
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template:
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src: my.cnf.j2
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dest: "{{ data_dir }}/node{{ item }}/my.cnf"
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loop: "{{ range(1, nodes_count | int + 1) | list }}"
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when: setup_type == "gr"
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- name: Create initialization script for each node
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template:
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src: init.sql.j2
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dest: "{{ data_dir }}/node{{ item }}/init.sql"
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loop: "{{ range(1, nodes_count | int + 1) | list }}"
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when: setup_type == "gr"
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- name: Remove old percona server containers
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community.docker.docker_container:
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name: "ps_pmm_{{ ps_version }}_{{ item }}"
@@ -67,64 +64,17 @@
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shell: "sudo chown -R 1001:1001 {{ data_dir }}/node{{ item }}/data"
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loop: "{{ range(1, nodes_count | int + 1) | list }}"
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- name: Start Percona Server containers with group replication
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community.docker.docker_container:
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name: "ps_pmm_{{ ps_version }}_{{ item }}"
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image: "percona/percona-server:{{ ps_version }}"
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restart_policy: always
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state: started
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networks:
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- name: "{{ network_name }}"
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env:
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MYSQL_ROOT_PASSWORD: "{{ root_password }}"
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ports:
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- "{{ mysql_port + item - 1 }}:{{ mysql_listen_port }}"
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- "{{ group_seeds_port + item - 1 }}:{{ group_seeds_port }}"
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volumes:
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- "{{ data_dir }}/node{{ item }}/data:/var/lib/mysql"
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- "{{ data_dir }}/node{{ item }}/my.cnf:/etc/mysql/my.cnf"
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- "{{ data_dir }}/node{{ item }}/init.sql:/docker-entrypoint-initdb.d/init.sql"
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loop: "{{ range(1, nodes_count | int + 1) | list }}"
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- name: Setup Percona Server group replication
68+
include_tasks: ./tasks/percona-server-group-replication-setup.yml
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when: setup_type == "gr"
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- name: Start Percona Server containers
91-
community.docker.docker_container:
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name: "ps_pmm_{{ ps_version }}_{{ item }}"
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image: "percona/percona-server:{{ ps_version }}"
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restart_policy: always
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state: started
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networks:
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- name: "{{ network_name }}"
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env:
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MYSQL_ROOT_PASSWORD: "{{ root_password }}"
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ports:
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- "{{ mysql_port + item - 1 }}:{{ mysql_listen_port }}"
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- "{{ group_seeds_port + item - 1 }}:{{ group_seeds_port }}"
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volumes:
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- "{{ data_dir }}/node{{ item }}/data:/var/lib/mysql"
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loop: "{{ range(1, nodes_count | int + 1) | list }}"
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when: setup_type != "gr"
71+
- name: Setup Percona Server with async replication
72+
include_tasks: ./tasks/percona-server-async-replication-setup.yml
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when: setup_type == "replication"
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- name: Wait for MySQL to be available
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wait_for:
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host: localhost
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port: "{{ mysql_port + item - 1 }}"
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delay: 10
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timeout: 300
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loop: "{{ range(1, nodes_count | int + 1) | list }}"
115-
116-
- name: Reset configuration for all nodes
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community.docker.docker_container_exec:
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container: "ps_pmm_{{ ps_version }}_{{ item }}"
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command: >
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mysql -uroot -p{{ root_password }} -e "
121-
RESET BINARY LOGS AND GTIDS;
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RESET REPLICA ALL;
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SET GLOBAL gtid_purged='';
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"
125-
loop: "{{ range(1, nodes_count | int + 1) | list }}"
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ignore_errors: yes
127-
when: setup_type == "gr"
75+
- name: Setup Percona Server
76+
include_tasks: ./tasks/percona-server-setup.yml
77+
when: setup_type != "gr" and setup_type != "replication"
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12979
- name: Create slowlog configuration for mysql nodes
13080
community.docker.docker_container_exec:
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loop: "{{ range(1, nodes_count | int + 1) | list }}"
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when: query_source == "slowlog"
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142-
- name: Bootstrap first node in the cluster
92+
- name: Install and add pmm client.
93+
include_tasks: ../tasks/install_pmm_client_centos.yml
94+
vars:
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container_name: "ps_pmm_{{ ps_version }}_{{ item }}"
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loop: "{{ range(1, nodes_count | int + 1) | list }}"
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- name: Get already connected services to pmm server
14399
community.docker.docker_container_exec:
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container: "ps_pmm_{{ ps_version }}_1"
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command: >
146-
mysql -uroot -p{{ root_password }} -e "
147-
SET GLOBAL group_replication_bootstrap_group=ON;
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START GROUP_REPLICATION;
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SET GLOBAL group_replication_bootstrap_group=OFF;"
150-
when: setup_type == "gr"
151-
retries: 5
152-
delay: 10
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- name: Wait 5 seconds for bootstrap to complete
155-
pause:
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seconds: 5
157-
when: setup_type == "gr"
102+
sh -c 'curl --location --insecure -u"admin:{{ admin_password }}" -s --request GET "http://{{ pmm_server_ip }}:{{ '80' if pmm_server_ip is ansible.utils.ipv4 else '8080' }}/v1/management/services" | jq -r ".services[].service_name"'
103+
register: pmm_server_services
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159-
- name: Start group replication on other nodes
160-
community.docker.docker_container_exec:
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container: "ps_pmm_{{ ps_version }}_{{ item }}"
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command: mysql -uroot -p{{ root_password }} -e "START GROUP_REPLICATION;"
163-
loop: "{{ range(2, nodes_count | int + 1) | list }}"
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ignore_errors: yes
165-
when: setup_type == "gr"
105+
- name: Display already connected services to pmm server
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debug:
107+
msg: "{{ pmm_server_services.stdout | split('\n') }}"
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167-
- name: Wait 10 seconds for the other nodes to join
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pause:
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seconds: 10
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when: setup_type == "gr"
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- name: Find out if service is already connected to pmm server
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block:
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- name: Loop through percona servers
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set_fact:
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random_service_name_value: "_{{ 9999 | random + 1 }}"
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loop: "{{ range(1, nodes_count | int + 1) | list }}"
115+
when: "('ps_pmm_' ~ ps_version ~ '_' ~ item) in pmm_server_services.stdout"
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- name: Create and seed a test database on primary
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- name: Add service to pmm server
173118
community.docker.docker_container_exec:
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container: "ps_pmm_{{ ps_version }}_1"
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command: >
176-
mysql -uroot -p{{ root_password}} -e "
177-
CREATE DATABASE testdb;
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USE testdb;
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CREATE TABLE testdb (id INT PRIMARY KEY, data VARCHAR(100));
180-
INSERT INTO testdb VALUES (1, 'Initial data from node mysql1');"
119+
container: "ps_pmm_{{ ps_version }}_{{ item }}"
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command: pmm-admin add mysql --query-source={{ query_source }} --username=root --password={{ root_password }} --environment=ps-gr-dev --cluster=ps-gr-dev-cluster --replication-set=ps-gr-replication ps_pmm_{{ ps_version }}_{{ item }}{{ random_service_name_value }} --debug 127.0.0.1:3306
121+
loop: "{{ range(1, nodes_count | int + 1) | list }}"
181122
when: setup_type == "gr"
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183-
- name: Check replication status on first node
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- name: Add service to pmm server
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community.docker.docker_container_exec:
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container: "ps_pmm_{{ ps_version }}_1"
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command: mysql -uroot -p{{ root_password }} -e "SELECT * FROM performance_schema.replication_group_members;"
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register: replication_status
188-
when: setup_type == "gr"
189-
190-
- name: Display replication status
191-
debug:
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var: replication_status.stdout
193-
when: setup_type == "gr"
126+
container: "ps_pmm_{{ ps_version }}_{{ item }}"
127+
command: pmm-admin add mysql --query-source={{ query_source }} --username=root --password={{ root_password }} --environment=ps-replication-dev --cluster=ps-replication-dev-cluster --replication-set=ps-async-replication ps_pmm_{{ ps_version }}_{{ item }}{{ random_service_name_value }} --debug 127.0.0.1:3306
128+
loop: "{{ range(1, nodes_count | int + 1) | list }}"
129+
when: setup_type == "replication"
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195-
- name: Check replication group members count
131+
- name: Add service to pmm server
196132
community.docker.docker_container_exec:
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container: "ps_pmm_{{ ps_version }}_1"
198-
command: mysql -uroot -p{{ root_password }} -e "SELECT COUNT(*) AS count FROM performance_schema.replication_group_members;"
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register: member_count
200-
when: setup_type == "gr"
201-
202-
- name: Display member count
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debug:
204-
var: member_count.stdout
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when: setup_type == "gr"
206-
207-
- name: Set verification instructions
208-
set_fact:
209-
verification_msg: |
210-
MySQL Cluster setup complete!
211-
212-
To verify replication is working:
213-
1. Connect to the first node:
214-
docker exec -it ps_pmm_{{ ps_version }}_1 mysql -uroot -p{{ root_password }}
215-
216-
2. Insert data in the test database:
217-
USE testdb;
218-
INSERT INTO testdb VALUES (100, 'Test replication');
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220-
3. Connect to other nodes and verify data is replicated:
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docker exec -it ps_pmm_{{ ps_version }}_2 mysql -uroot -p{{ root_password }}
222-
USE testdb;
223-
SELECT * FROM testdb;
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when: setup_type == "gr"
225-
226-
- name: Display verification instructions
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debug:
228-
msg: "{{ verification_msg | split('\n') }}"
229-
when: setup_type == "gr"
230-
231-
- name: Install pmm client and connect to pmm server
232-
include_tasks: ../tasks/add_mysql_to_pmm_server.yml
233-
vars:
234-
container_name: "ps_pmm_{{ ps_version }}_{{ item }}"
133+
container: "ps_pmm_{{ ps_version }}_{{ item }}"
134+
command: pmm-admin add mysql --query-source={{ query_source }} --username=root --password={{ root_password }} --environment=ps-dev ps_pmm_{{ ps_version }}_{{ item }}{{ random_service_name_value }} --debug 127.0.0.1:3306
235135
loop: "{{ range(1, nodes_count | int + 1) | list }}"
236-
237-
136+
when: setup_type != "gr" and setup_type != "replication"
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239138
- name: Install sysbench inside of all percona server nodes
240139
community.docker.docker_container_exec:
241140
container: "ps_pmm_{{ ps_version }}_{{ item }}"
242141
user: "root"
243142
command: >
244143
/bin/sh -c "
245-
wget -O epel-release.rpm -nv https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm &&
144+
wget -O epel-release.rpm --progress=dot:giga https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm &&
246145
rpm -i epel-release.rpm &&
247146
microdnf install -y sysbench
248147
"
@@ -271,7 +170,7 @@
271170
FLUSH PRIVILEGES;
272171
"
273172
loop: "{{ range(1, nodes_count | int + 1) | list }}"
274-
when: setup_type != "gr"
173+
when: setup_type != "gr" and setup_type != "replication"
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276175
- name: Prepare sysbench inside of all percona server nodes
277176
community.docker.docker_container_exec:
@@ -285,7 +184,7 @@
285184
GRANT ALL PRIVILEGES ON *.* TO 'sbtest'@'127.0.0.1';
286185
FLUSH PRIVILEGES;
287186
"
288-
when: setup_type == "gr"
187+
when: setup_type == "gr" or setup_type == "replication"
289188

290189
- name: Prepare data for sysbench inside of all percona server nodes
291190
community.docker.docker_container_exec:
@@ -300,7 +199,7 @@
300199
--tables=10
301200
--table-size=100000
302201
prepare
303-
when: setup_type != "gr"
202+
when: setup_type != "gr" and setup_type != "replication"
304203
loop: "{{ range(1, nodes_count | int + 1) | list }}"
305204

306205
- name: Prepare data for sysbench inside of first percona server nodes
@@ -316,7 +215,7 @@
316215
--tables=10
317216
--table-size=100000
318217
prepare
319-
when: setup_type == "gr"
218+
when: setup_type == "gr" or setup_type == "replication"
320219

321220
- name: Run load for sysbench inside of all percona server nodes
322221
community.docker.docker_container_exec:

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