成功执行完pcp_recovery_node后,检查从节点是否正确加入集群: psql -h192.168.0.5 -p9999-U pgpool postgres -c"show pool_nodes"Password for user pgpool node_id | hostname | port | status | pg_status | lb_weight | role | pg_role | select_cnt | load_balance_node | replication_delay | rep...
用户pgpool 的口令:postgres=> show pool_nodes; node_id | hostname | port | status | lb_weight | role | select_cnt | load_balance_node | replication_delay ---+---+---+---+---+---+---+---+--- 0 | 192.168.36.130 | 5432 | up | 0.500000 | primary | 0 |false| 0 1 |...
. done server stopped $ psql -p 11000 -c "show pool_nodes" test node_id | hostname | port | status | lb_weight | role | select_cnt | load_balance_node | replication_delay | last_status_change ---+---+---+---+---+---+---+---+---+--- 0 | /tmp | 11002 | up |...
[postgres@pg2 pgpool-II]$ psql -h192.168.1.199-p9999-U postgres postgres=# show pool_nodes;-[ RECORD1]---+---node_id|0hostname|192.168.1.108port|5432status |downpg_status|up lb_weight|0.333333role|standby pg_role|primary select_cnt|0load_balance_node|falsereplication_delay|0replication_...
node_id | hostname | port | status | lb_weight | role | select_cnt | load_balance_node | replication_delay ---+---+---+---+---+---+---+---+--- 0 | pghost4 | 1921 | down | -nan | standby | 0 | false | 0 1 | pghost5 | 1921 | up | -nan | ...
pgpool 配置的时候出现两个standby的情况处理办法。 pg10@pghost4->psql -h 10.10.10.15 -p 9999 postgres pg10 Password for user pg10: psql (10.0) Type “help” for help. postgres=# show pool_nodes; node_id | hostname | port | status | lb_weight | role | select_cnt | load_balance_...
* If no valid node found, returns -1. */ 这个函数就是控制选举下一个master节点的函数; static int get_next_master_node(void) { int i; for (i=0;i<pool_config->backend_desc->num_backends;i++) { /* * Do not use VALID_BACKEND macro in raw mode. ...
# 设置负载均衡模式为最少连接load_balance_mode = 'leastconn'# 初始化子进程数量num_init_children = 4# 设置最大连接池大小max_pool = 10# 设置最小连接池大小min_pool = 2 接着,定义各个数据库节点的连接信息,并根据其性能分配不同的权重值。假设我们有一个包含三个节点的集群,其中 Node1 性能最强,因...
用户pgpool 的口令:postgres=>show pool_nodes;node_id|hostname|port|status|lb_weight|role|select_cnt|load_balance_node|replication_delay---+---+---+---+---+---+---+---+---0|192.168.36.130|5432|up|0.500000|primary|0|false|01|192.168.36.131|5432|up|0.500000|standby|0|true|0(2rows...
node_id | hostname | port | status | lb_weight | role | select_cnt | load_balance_node | replication_delay ---±---±---±---±---±---±---±---±--- 0 | master | 5432 | up | 0.500000 | primary | 0 | false | 0 1 | slave | 5432 | up | 0.500000...