# 设置资源优先在node1运行
[root@ha-node1 ~]# pcs constraint location vip prefers ha-node1=100

# 查看约束
[root@ha-node1 ~]# pcs constraint location
Location Constraints:
Resource: vip
Enabled on: ha-node1 (score:100)

# 设置资源避免在node2运行
[root@ha-node1 ~]# pcs constraint location vip avoids ha-node2=50

# 查看所有位置约束
[root@ha-node1 ~]# pcs constraint location
Location Constraints:
Resource: vip
Enabled on: ha-node1 (score:100)
Disabled on: ha-node2 (score:-50)

# 设置资源必须在指定节点运行
[root@ha-node1 ~]# pcs constraint location vip rule score=INFINITY #uname eq ha-node1

# 查看规则约束
[root@ha-node1 ~]# pcs constraint location vip
Location Constraints:
Resource: vip
Rule: score=INFINITY
Expression: #uname eq ha-node1

# 查看约束ID
[root@ha-node1 ~]# pcs constraint location –full
Location Constraints:
Resource: vip
Constraint: location-vip-ha-node1-INFINITY
Rule: score=INFINITY (id:location-vip-ha-node1-INFINITY-rule)
Expression: #uname eq ha-node1 (id:location-vip-ha-node1-INFINITY-expr)

# 删除约束
[root@ha-node1 ~]# pcs constraint remove location-vip-ha-node1-INFINITY

# 验证删除
[root@ha-node1 ~]# pcs constraint location
No location constraints found

# 设置vip必须在nginx之前启动
[root@ha-node1 ~]# pcs constraint order vip then nginx
Adding vip nginx (kind: Mandatory) (Options: first-action=start then-action=start)

# 查看顺序约束
[root@ha-node1 ~]# pcs constraint order
Ordering Constraints:
start vip then start nginx (Mandatory)

# 设置启动顺序（可选）
[root@ha-node1 ~]# pcs constraint order vip then nginx kind=Optional

# 查看约束
[root@ha-node1 ~]# pcs constraint order
Ordering Constraints:
start vip then start nginx (Mandatory)
start vip then start nginx (Optional)

# 设置对称顺序
[root@ha-node1 ~]# pcs constraint order vip then nginx symmetrical=true

# 设置停止顺序
[root@ha-node1 ~]# pcs constraint order stop nginx then stop vip
Adding nginx vip (kind: Mandatory) (Options: first-action=stop then-action=stop)

# 查看所有顺序约束
[root@ha-node1 ~]# pcs constraint order
Ordering Constraints:
start vip then start nginx (Mandatory)
start vip then start nginx (Optional)
stop nginx then stop vip (Mandatory)

# 查看约束ID
[root@ha-node1 ~]# pcs constraint order –full
Ordering Constraints:
Constraint: order-vip-nginx-mandatory
start vip then start nginx (Mandatory)
Constraint: order-vip-nginx-optional
start vip then start nginx (Optional)

# 删除约束
[root@ha-node1 ~]# pcs constraint remove order-vip-nginx-mandatory

# 验证删除
[root@ha-node1 ~]# pcs constraint order
Ordering Constraints:
start vip then start nginx (Optional)

# 设置vip和nginx必须在同一节点运行
[root@ha-node1 ~]# pcs constraint colocation add vip with nginx INFINITY

# 查看共置约束
[root@ha-node1 ~]# pcs constraint colocation
Colocation Constraints:
vip with nginx (score:INFINITY)

# 设置vip和nginx不能在同一节点运行
[root@ha-node1 ~]# pcs constraint colocation add vip with nginx -INFINITY

# 查看约束
[root@ha-node1 ~]# pcs constraint colocation
Colocation Constraints:
vip with nginx (score:INFINITY)
vip with nginx (score:-INFINITY)

# 设置资源组共置
[root@ha-node1 ~]# pcs constraint colocation add webgroup with dbgroup 100

# 查看所有约束
[root@ha-node1 ~]# pcs constraint
Location Constraints:
No location constraints found
Ordering Constraints:
start vip then start nginx (Optional)
Colocation Constraints:
vip with nginx (score:INFINITY)
vip with nginx (score:-INFINITY)

# 查看约束ID
[root@ha-node1 ~]# pcs constraint colocation –full
Colocation Constraints:
Constraint: colocation-vip-nginx-INFINITY
vip with nginx (score:INFINITY)
Constraint: colocation-vip-nginx–INFINITY
vip with nginx (score:-INFINITY)

# 删除约束
[root@ha-node1 ~]# pcs constraint remove colocation-vip-nginx-INFINITY

# 验证删除
[root@ha-node1 ~]# pcs constraint colocation
Colocation Constraints:
vip with nginx (score:-INFINITY)

# 查看所有约束
[root@ha-node1 ~]# pcs constraint
Location Constraints:
No location constraints found
Ordering Constraints:
start vip then start nginx (Optional)
Colocation Constraints:
vip with nginx (score:-INFINITY)
Ticket Constraints:

# 查看详细约束
[root@ha-node1 ~]# pcs constraint –full
Location Constraints:
No location constraints found
Ordering Constraints:
Constraint: order-vip-nginx-optional
start vip then start nginx (Optional)
Colocation Constraints:
Constraint: colocation-vip-nginx–INFINITY
vip with nginx (score:-INFINITY)
Ticket Constraints:

# 查看特定资源的约束
[root@ha-node1 ~]# pcs constraint ref vip
Resource: vip
order-vip-nginx-optional
colocation-vip-nginx–INFINITY

# 清除资源的所有约束
[root@ha-node1 ~]# pcs constraint clear vip
Removing all constraints for vip
* Removed: order-vip-nginx-optional
* Removed: colocation-vip-nginx–INFINITY

# 验证清除
[root@ha-node1 ~]# pcs constraint ref vip
No constraints found for vip

# 清除所有约束
[root@ha-node1 ~]# pcs constraint remove –all
Removing all constraints
* Removed: all constraints

# 验证清除
[root@ha-node1 ~]# pcs constraint
Location Constraints:
No location constraints found
Ordering Constraints:
No ordering constraints found
Colocation Constraints:
No colocation constraints found
Ticket Constraints:
No ticket constraints found