rsZQaUhJ

1Shared ip(Keepalived): 192.168.1.20
2node01: 192.168.1.11
3node02: 192.168.1.12 
4     
5#!/usr/bin/python
6
7import subprocess
8import sys
9
10try:
11    subprocess.check_call(['/usr/bin/systemctl', 'status', 'postgresql.service'])
12    sys.exit(0)
13except subprocess.CalledProcessError:
14    sys.exit(3) 
15     
16#!/usr/bin/python
17
18import sys
19import subprocess
20
21if sys.argv[3] == "MASTER":
22    try:
23        subprocess.check_call(['/usr/bin/systemctl start postgresql.service'])
24    except subprocess.CalledProcessError:
25        pass
26    sys.exit(0)
27
28if sys.argv[3] == "BACKUP":
29    try:
30        subprocess.check_call(['/usr/bin/systemctl', 'stop', 'postgresql.service'])
31    except subprocess.CalledProcessError:
32        pass
33    sys.exit(0)
34
35if sys.argv[3] == "FAULT":
36    try:
37        subprocess.check_call(['/usr/bin/systemctl', 'stop', 'postgresql.service'])
38    except subprocess.CalledProcessError:
39        pass
40    sys.exit(0)
41
42sys.exit(1) 
43     
44vrrp_script chk_pgsql {
45  script       "/etc/keepalived/pgsql-check"
46  interval 2   # check every 2 seconds
47  fall 2       # require 2 failures for KO
48  rise 2       # require 2 successes for OK
49}
50
51vrrp_instance VI_1 {
52    state MASTER
53    interface eth0
54    virtual_router_id 51
55    priority 100
56    advert_int 1
57    authentication {
58        auth_type PASS
59        auth_pass 1111
60    }
61    virtual_ipaddress {
62        192.168.1.20
63    }
64    track_script {
65        chk_pgsql
66    }
67    notify "/etc/keepalived/notify"
68} 
69     
70vrrp_script chk_pgsql {
71  script       "/etc/keepalived/check-pgsql"
72  interval 1  
73  fall 3      
74  rise 1      
75  weight 1
76} 
77     
78vrrp_script chk_pgsql {
79  script       "/etc/keepalived/check-pgsql"
80  interval 1  
81  fall 3    
82  rise 1     
83  weight 1
84}
85
86vrrp_instance VI_1 {
87    state BACKUP
88    interface eth0
89    virtual_router_id 51
90    priority 99
91    advert_int 1
92    authentication {
93        auth_type PASS
94        auth_pass 1111
95    }
96    track_script {
97        chk_pgsql
98    }
99    virtual_ipaddress {
100        192.168.1.20
101    }
102    notify_master "/etc/keepalived/start-pgsql"
103    notify_backup "/etc/keepalived/stop-pgsql"
104    notify_fault "/etc/keepalived/stop-pgsql"
105    notify_stop "/etc/keepalived/stop-pgsql"
106}