feat(ansible): MySQL 交付剧本接入 GTID 异步主从复制
- mysql_expected_hosts 按 replica_count 推导预期节点数 - 主节点判定改为 mysql_primary_host 显式指定,IP 经 hostvars 回退解析 - 副本节点等待主节点端口就绪后执行 CHANGE REPLICATION SOURCE (defaults-extra-file 临时凭据文件 + SOURCE_AUTO_POSITION + GET_SOURCE_PUBLIC_KEY) - 复制线程验证含 IO/SQL Running 与错误字段空值检查 (锚点带 ^[[:space:]]* 适配 SHOW REPLICA STATUS\G 的字段名前导空格)
This commit is contained in:
Hungerdream
@@ -61,7 +61,13 @@
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mgr_group_name: "{{ group_replication_group_name | default('aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa') }}"
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# --- expected node count per topology ---
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mysql_expected_hosts: "{{ {'standalone': 1, 'primary_replica': 2, 'mgr_3': 3}[topology | default('standalone')] }}"
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mysql_expected_hosts: "{{ 1 if (topology | default('standalone')) == 'standalone' else ((replica_count | default(1) | int) + 1 if (topology | default('standalone')) == 'primary_replica' else 3) }}"
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# 平台为 primary_replica 显式传入主从节点；standalone 仍按旧逻辑工作。
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mysql_primary_host_value: "{{ mysql_primary_host | default(ansible_play_hosts_all[0]) }}"
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mysql_primary_ip_value: "{{ mysql_primary_ip | default(hostvars[mysql_primary_host_value].ansible_host | default(mysql_primary_host_value)) }}"
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# 交付只暴露 root 管理员；复制链路复用已配置好的 root@%。
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mysql_replication_user: "root"
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mysql_replication_password: "{{ mysql_root_password_value }}"
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# --- secrets (prefer launch extra_vars; fall back to AWX credential-injected env) ---
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mysql_root_password_value: "{{ mysql_root_password | default(lookup('ansible.builtin.env', 'XINFRA_MYSQL_ROOT_PASSWORD'), true) }}"
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@@ -355,7 +361,7 @@
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mysql_node_index: "{{ ansible_play_hosts_all.index(inventory_hostname) }}"
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mysql_node_role: >-
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{{ 'standalone' if topology == 'standalone' else
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('primary' if ansible_play_hosts_all.index(inventory_hostname) == 0 else
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('primary' if inventory_hostname == mysql_primary_host_value else
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('replica' if topology == 'primary_replica' else 'mgr')) }}
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# host-wide unique: platform may pass explicit mysql_server_id; otherwise derive
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# port + node index (ports are unique per host in the pool model).
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@@ -479,6 +485,64 @@
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failed_when: false
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no_log: true
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- name: Wait for the replica to reach the primary SQL port
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ansible.builtin.wait_for:
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host: "{{ mysql_primary_ip_value }}"
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port: "{{ mysql_port_value }}"
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timeout: 60
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when: topology == 'primary_replica' and inventory_hostname != mysql_primary_host_value
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- name: Configure and start GTID replication on the replica
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ansible.builtin.shell:
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cmd: |
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set -euo pipefail
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client_file="$(mktemp)"
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sql_file="$(mktemp)"
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trap 'rm -f "$client_file" "$sql_file"' EXIT
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chmod 600 "$client_file" "$sql_file"
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cat >"$client_file" <<'EOF'
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[client]
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user=root
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password={{ mysql_root_password_value }}
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socket={{ mysql_run_dir }}/mysql.sock
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EOF
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cat >"$sql_file" <<'EOF'
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STOP REPLICA;
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RESET REPLICA ALL;
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CHANGE REPLICATION SOURCE TO SOURCE_HOST='{{ mysql_primary_ip_value }}', SOURCE_PORT={{ mysql_port_value }}, SOURCE_USER='{{ mysql_replication_user }}', SOURCE_PASSWORD='{{ mysql_replication_password | replace("'", "''") }}', SOURCE_AUTO_POSITION=1, GET_SOURCE_PUBLIC_KEY=1;
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START REPLICA;
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EOF
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/usr/bin/mysql --defaults-extra-file="$client_file" <"$sql_file"
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executable: /bin/bash
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when: topology == 'primary_replica' and inventory_hostname != mysql_primary_host_value
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no_log: true
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- name: Verify GTID replication threads
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ansible.builtin.shell:
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cmd: |
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set -euo pipefail
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client_file="$(mktemp)"
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trap 'rm -f "$client_file"' EXIT
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chmod 600 "$client_file"
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cat >"$client_file" <<'EOF'
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[client]
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user=root
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password={{ mysql_root_password_value }}
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socket={{ mysql_run_dir }}/mysql.sock
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EOF
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status="$(/usr/bin/mysql --defaults-extra-file="$client_file" -e 'SHOW REPLICA STATUS\G')"
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grep -q 'Replica_IO_Running: Yes' <<<"$status"
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grep -q 'Replica_SQL_Running: Yes' <<<"$status"
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grep -qE '^[[:space:]]*Last_IO_Error:[[:space:]]*$' <<<"$status"
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grep -qE '^[[:space:]]*Last_SQL_Error:[[:space:]]*$' <<<"$status"
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executable: /bin/bash
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register: mysql_replica_status
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retries: 12
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delay: 5
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until: mysql_replica_status.rc == 0
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when: topology == 'primary_replica' and inventory_hostname != mysql_primary_host_value
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no_log: true
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- name: Notify healthcheck started
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ansible.builtin.uri:
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url: "{{ delivery_callback_url_value }}"
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@@ -521,13 +585,10 @@
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failed_when: false
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no_log: true
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- name: Note pending HA runtime orchestration
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- name: Note pending Group Replication orchestration
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ansible.builtin.debug:
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msg: >-
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topology={{ topology }} deployed with HA-ready config (GTID/binlog/relay/GR settings in place),
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but replication wiring (CHANGE REPLICATION SOURCE) and Group Replication bootstrap
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(START GROUP_REPLICATION) are not yet automated — nodes start config-ready only.
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when: topology != 'standalone'
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msg: "MGR remains unsupported; primary_replica GTID replication is configured and healthy."
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when: topology == 'mgr_3'
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run_once: true
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- name: Notify platform registration handoff
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