第一个节点上的示例 slonik 命令:
slonik <<_EOF_
#--
# define the namespace the replication system uses in our example it is
# slony_example
#--
cluster name = $CLUSTERNAME;
#--
# admin conninfo's are used by slonik to connect to the nodes one for each
# node on each side of the cluster, the syntax is that of PQconnectdb in
# the C-API
# --
node 1 admin conninfo = 'dbname=$MASTERDBNAME host=$MASTERHOST user=$REPLICATIONUSER';
node 2 admin conninfo = 'dbname=$SLAVEDBNAME host=$SLAVEHOST user=$REPLICATIONUSER';
#--
# init the first node. Its id MUST be 1. This creates the schema
# _$CLUSTERNAME containing all replication system specific database
# objects.
#--
init cluster ( id=1, comment = 'Master Node');
#--
# Slony-I organizes tables into sets. The smallest unit a node can
# subscribe is a set. The following commands create one set containing
# all 4 pgbench tables. The master or origin of the set is node 1.
#--
create set (id=1, origin=1, comment='All pgbench tables');
set add table (set id=1, origin=1, id=1, fully qualified name = 'public.accounts', comment='accounts table');
set add table (set id=1, origin=1, id=2, fully qualified name = 'public.branches', comment='branches table');
set add table (set id=1, origin=1, id=3, fully qualified name = 'public.tellers', comment='tellers table');
set add table (set id=1, origin=1, id=4, fully qualified name = 'public.history', comment='history table');
#--
# Create the second node (the slave) tell the 2 nodes how to connect to
# each other and how they should listen for events.
#--
store node (id=2, comment = 'Slave node', event node=1);
store path (server = 1, client = 2, conninfo='dbname=$MASTERDBNAME host=$MASTERHOST user=$REPLICATIONUSER');
store path (server = 2, client = 1, conninfo='dbname=$SLAVEDBNAME host=$SLAVEHOST user=$REPLICATIONUSER');
_EOF_
第二个节点上的示例 slonik 命令:
slonik <<_EOF_
# ----
# This defines which namespace the replication system uses
# ----
cluster name = $CLUSTERNAME;
# ----
# Admin conninfo's are used by the slonik program to connect
# to the node databases. So these are the PQconnectdb arguments
# that connect from the administrators workstation (where
# slonik is executed).
# ----
node 1 admin conninfo = 'dbname=$MASTERDBNAME host=$MASTERHOST user=$REPLICATIONUSER';
node 2 admin conninfo = 'dbname=$SLAVEDBNAME host=$SLAVEHOST user=$REPLICATIONUSER';
# ----
# Node 2 subscribes set 1
# ----
subscribe set ( id = 1, provider = 1, receiver = 2, forward = no);
_EOF_
上面的哪个 slonik 命令(在什么 slonik 命令中)在每个 节点的数据库的 中创建 $CLUSTERNAME 模式？
我对第二个节点更感兴趣；是在第二个节点的数据库中创建 $CLUSTERNAME 模式的 store node() 命令吗？
最佳答案
第一个节点上的“init cluster”，第二个节点上的“store node”。
关于postgresql - Postgres Slony-I 问题，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/2302672/