Linux运维--14.Kolla部署OpenStack使用external MariaDB Galera Cluster

使用haproxy+keepalived实现Mariadb负载均衡

controller2: 10.100.2.52  haproxy+keepalived
controller3: 10.100.2.53  haporxy+keepalived
vip:10.100.2.99
network1: 10.100.2.61 mariadb-galera-1
network2: 10.100.2.62 mariadb-galera-2
compute1: 10.100.2.71 mariadb-galera-3
controller2:
yum  install -y haproxy keepalived
vim /etc/keepalived/keepalived.conf
global_defs {
    router_id controller2
}
vrrp_script chk_haproxy {
    script "/etc/keepalived/chk_haproxy.sh"
    interval 1
    weight 2
}
vrrp_instance VI_1 {
    state SLAVE
    interface ens161
    virtual_router_id 201
    priority 99
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    track_script {
        chk_haproxy
    }
    virtual_ipaddress {
        10.100.2.99/24
    }
    track_interface {
        ens161
    }
}
controller3:
router_id controller3
state MASTER
priority 99
vim /etc/keepalived/chk_haproxy.sh
#!/bin/bah
chkha=`ps -C haproxy --no-header |wc -l`
if [ $chkha -eq 0 ];then
  systemctl stop keepalived
fi
chmod +x /etc/keepalived/chk_haproxy.sh
vim /etc/haproxy/haproxy.cfg
global
    log 127.0.0.1 local2
    chroot /var/lib/haproxy
    pidfile /var/run/haproxy.pid
    maxconn 4000
    user haproxy
    group haproxy
    daemon
    spread-checks              3
    tune.bufsize               32768
    tune.maxrewrite 1024
    tune.ssl.default-dh-param  2048
defaults
    log global
    log 127.0.0.1 local3
    mode http
    option httplog
    option dontlognull
    retries 10
    option redispatch
    timeout http-request 10s
    timeout queue 1m
    timeout connect 10s
    timeout client 1m
    timeout server 1m
    timeout http-keep-alive 10s
    timeout check 10s
    maxconn 3000
listen mariadb
    bind *:3306
    mode tcp
    balance roundrobin
    server network1 10.100.2.61:3306 weight 5
    server network2 10.100.2.62:3306 weight 5
    server compute1 10.100.2.71:3306 weight 5
listen stats
    bind *:1080
    mode http
    option httplog
    maxconn 10
    stats enable
    stats refresh 30s
    stats uri /stats
    stats realm MaCluster\ Haproxy
    stats auth admin:admin
    stats hide-version
    stats admin if TRUE
systemct  start haproxy keepalived.service
systemctl enable haproxy keepalived.service 

kolla对接exteral Maraidb Galera Cluster

参考搭建galera Cluster 文档
```bash
1. Enabling External MariaDB support
vim /etc/kolla/globals.yml
enable_mariadb: "no"
vim multinode
[mariadb]
10.100.2.99
vim e/tc/kolla/globals.yml
database_address: "10.100.2.99"
2.使用预设数据库/用户 #
vim  /etc/kolla/globals.yml
use_preconfigured_databases: "yes"
keystone_database_user: "keystone" keystone
glance_database_user: "glance" glance
nova_database_user: "nova"  nova nova_cell0
nova_api_database_user: "nova" nova_api
neutron_database_user: "neutron"  #neutron
cinder_database_user: "cinder" #cinder
manila_database_user: "manila" #manila
panko_database_user: "panko" # panko
trove_database_user: "trove" # trove
aodh_database_user: "aodh" # aodh
gnocchi_database_user: "gnocchi" # gnocchi
octavia_database_user: "octavia" # octavia
rally_database_user: "rally"   #rally
palcement_database_user: "placement" # placement
barbican_database_user: "barbican" # barbican
ironic_database_user: "ironic" # ironic-api
ironic_inspector_database_user: "ironic" # ironic-inspector
heate_database_user: "heat" # heat
grafana_database_user: "grafana"
mysql -uroot -popenstack
# keystone
MariaDB [(none)]> CREATE DATABASE keystone;
MariaDB [(none)]> GRANT ALL PRIVILEGES ON keystone.* TO 'keystone'@'localhost' \
IDENTIFIED BY 'openstack';
MariaDB [(none)]> GRANT ALL PRIVILEGES ON keystone.* TO 'keystone'@'%' \
IDENTIFIED BY 'openstack';
sed -i -r -e 's/([a-z_]{0,}database_password:+)(.*)$/\1 openstack/gi' /etc/kolla/passwords.yml

参考文档：
https://docs.openstack.org/kolla-ansible/stein/reference/databases/external-mariadb-guide.html

https://www.cloudandheat.com/blog/tutorial-part-2-highly-available-mariadb-galera-cluster-with-floating-ip/

https://www.cnblogs.com/fawaikuangtu123/p/10915229.html