集群实现
软件层分为负载均衡层 Web 层、 数据库和共享存储层。
数据库：
keepalived+haproxy+pxc（MariaDB Galera Cluster）
共享存储：
ceph分布式集群，cephfs
web层：
tomcat
负载均衡：
nginx+keepalived
DNS：内网DNS解析、时间服务器
配置环境
1.外网ip与内网ip
每一台服务器上首先都配置一个外网ip与内网ip
2.设置hostname
hostnamectl hostname xxxxx
给本机设置域名，配合后期DNS
3.下载常用工具
dnf install -y wget bash-completion lrzsz vim net-tools tree
4.关闭selinux与防火墙
sed -i '/^SELINUX=/ -c SELINUX=disbaled /' /etc/sysconfig/selinux
systemctl disable firewalld
DNS服务器配置
1、时间服务器配置
[root@localhost ~]# yum install chrony[root@dns ~]# vim /etc/chrony.conf
pool ntp1.aliyun.com iburst
allow 192.168.182.0/24
local stratum 10
[root@dns ~]# systemctl restart chronyd
[root@dns ~]# systemctl enable chronyd
2、DNS服务器配置
# 安装bind
[root@dns ~]# yum install bind -y# 配置 named.conf
[root@dns ~]# vim /etc/named.conf
options {listen-on port 53 { 192.168.182.138; };allow-query { 192.168.182.0/24; };# 配置正向区域
[root@dns ~]# vim /etc/named.rfc1912.zon
zone "openlab.edu" IN {type master;file "openlab.edu.zone";
};# 配置区域文件
[root@dns ~]# cd /var/named
[root@dns named]# cp -p named.localhost openlab.edu.zone
[root@dns named]# vim openlab.edu.zone
$TTL 1D
@ IN SOA dns.openlab.edu. admin.openlab.edu. (2024042701 ; serial1D ; refresh1H ; retry1W ; expire3H ) ; minimumNS dns.openlab.edu.
dns A 192.168.182.138
realserver1 A 192.168.182.130
realserver2 A 192.168.182.131
store1 A 192.168.182.132
store2 A 192.168.182.133
store3 A 192.168.182.134
db1 A 192.168.182.135
db2 A 192.168.182.136
db3 A 192.168.182.137# 启动named
[root@dns named]# systemctl enable --now named
# 验证配置
[root@dns named]# named-checkconf
[root@dns named]# named-checkzone openlab.zone openlab.edu.zone
zone openlab.zone/IN: loaded serial 2024042701
OK
[root@dns ~]# nslookup db1.openlab.edu 192.168.182.138
Server: 192.168.182.138
Address: 192.168.182.138#53Name: db1.openlab.edu
Address: 192.168.182.135所有内网服务器均把网关设为DNS服务器内网ip
#这里我内网ip用的是DHCP，没有手工配置，推荐还是配置下
nmtui c mod ens192 ipv4.dns 192.168.182.135
nmtui c up ens192
可以修改里面的网关 /etc/resolv.conf
ceph集群扩容
存储配置
三台ceph服务器先配置host解析
192.168.182.132 store1.openlab.edu
192.168.182.133 store2.openlab.edu
192.168.182.134 store3.openlab.edu
配置时间同步
dnf install chrony -y
systemctl enable chronyd --now
vim /etc/chrony.conf
server ntp1.aliyun.com iburst
server ntp2.aliyun.com iburst
server ntp3.aliyun.com iburst
server ntp4.aliyun.com iburst
chronyc sources -v //查看时间同步源
配置ceph的yum源
cat > /etc/yum.repos.d/ceph.repo <<EOF
[ceph]
name=ceph x86_64
baseurl=https://repo.huaweicloud.com/ceph/rpm-quincy/el8/x86_64
enabled=1
gpgcheck=0
[ceph-noarch]
name=ceph noarch
baseurl=https://repo.huaweicloud.com/ceph/rpm-quincy/el8/noarch
enabled=1
gpgcheck=0
[ceph-source]
name=ceph SRPMS
baseurl=https://repo.huaweicloud.com/ceph/rpm-quincy/el8/SRPMS
enabled=1
gpgcheck=0
EOF
三个节点安装python3和podman
dnf install python3 podman -y
三台store添加三块硬盘
主节点store1安装cephadm并初始化集群
cephadm bootstrap --mon-ip 192.168.182.132 \
--initial-dashboard-user admin \
--initial-dashboard-password redhat \
--dashboard-password-noupdate \
--allow-fqdn-hostname
集群扩容
## 三台服务器安装ceph-common
dnf install epel-release
dnf install ceph-common
# 拷贝公钥
使用以下命令生成集群公钥，并将其拷贝到剩余主机：
ceph cephadm get-pub-key > ~/ceph.pub
ssh-copy-id -f -i ~/ceph.pub root@store2.openlab.edu //@后面的主机名视自己实际情况而变
ssh-copy-id -f -i ~/ceph.pub root@store3.openlab.edu//hosts解析设置了，所以直接写主机名
#将store2和3加入到集群
cephadm shell ceph orch host add store2.openlab.edu
cephadm shell ceph orch host add store3.openlab.edu
配置ssh免密登录
ssh-keygen -f ~/.ssh/id_rsa -N '' -qfor i in store1.openlab.edu store2.openlab.edu store3.openlab.edu ; do ssh-copy-id $i; done
添加osd
ceph orch apply osd --all-available-devices
将mon，mgr配置到集群节点
ceph orch apply mgr --placement "store1.openlab.edu store2.openlab.edu store3.openlab.edu"
ceph orch apply mon --placement "store1.openlab.edu store2.openlab.edu store3.openlab.edu"
查看ceph集群信息
[root@store1 ceph]# ceph -scluster:id: 3504b540-134f-11ef-9ad3-000c299f8a28health: HEALTH_OKservices:mon: 3 daemons, quorum store1,store2,store3 (age 37m)mgr: store3.tozlph(active, since 51s), standbys: store2.omdwadosd: 9 osds: 9 up (since 37m), 9 in (since 37m)data:pools: 1 pools, 1 pgsobjects: 2 objects, 449 KiBusage: 2.6 GiB used, 267 GiB / 270 GiB availpgs: 1 active+clean[root@store1 ceph]# ceph -scluster:id: 3504b540-134f-11ef-9ad3-000c299f8a28health: HEALTH_OKservices:mon: 3 daemons, quorum store1,store2,store3 (age 85m)mgr: store3.tozlph(active, since 48m), standbys: store2.omdwad, store1.rvcnfoosd: 9 osds: 9 up (since 85m), 9 in (since 85m)data:pools: 1 pools, 1 pgsobjects: 2 objects, 449 KiBusage: 2.6 GiB used, 267 GiB / 270 GiB availpgs: 1 active+clean登录ceph界面，如下图所示
浏览器访问https://ip:8433
输入用户名和密码即可登录成功
配置存储池
ceph fs volume create cephfs01
创建用户
[root@store1 ceph]# ceph fs authorize cephfs01 client.rw / rws
[client.rw]key = AQBmGEZmsGkzDxAAkPCof9UNmrRCQel49yW+0Q==[root@store1 ceph]# ceph auth get client.rw
[client.rw]key = AQBmGEZmsGkzDxAAkPCof9UNmrRCQel49yW+0Q==caps mds = "allow rws fsname=cephfs01"caps mon = "allow r fsname=cephfs01"caps osd = "allow rw tag cephfs data=cephfs01"
[root@store1 /]# ceph auth get client.rw -o /etc/ceph/ceph.client.rw.keyring三台ceph服务器配置设置DNS
[root@store1 ~]# nmcli c s
NAME UUID TYPE DEVICE
ens160 1021b155-0475-43a1-97ac-03d0986e7779 ethernet ens160
ens192 b9124424-e5d9-4b9c-8894-bbc364371ca6 ethernet ens192 [root@store1 ~]# nmcli c modify ens192 ipv4.dns 192.168.182.138
[root@store1 ~]# nmcli c up ens192
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/3)[root@store1 ~]# vim /etc/chrony.conf
# Use public servers from the pool.ntp.org project.
# Please consider joining the pool (http://www.pool.ntp.org/join.html).
#pool 2.rocky.pool.ntp.org iburst
pool dns.openlab.edu iburst[root@store1 ~]# vim /etc/hosts
192.168.182.138 dns.openlab.edu[root@store1 ~]# systemctl restart chronyd
[root@store1 ~]# chronyc sources
MS Name/IP address Stratum Poll Reach LastRx Last sample
===============================================================================
^* dns.openlab.edu 3 6 17 3 +387ns[ +38us] +/- 19ms数据库配置
给三台数据库配置hosts解析
[root@db1 ~]# vim /etc/hosts
192.168.182.135 db1.openlab.edu
192.168.182.136 db2.openlab.edu
192.168.182.137 db3.openlab.edu
192.168.182.138 dns.openlab.edu
配置时间同步
vim /etc/chrony.conf
# Use public servers from the pool.ntp.org project.
# Please consider joining the pool (https://www.pool.ntp.org/join.html).
pool dns.openlab.edu iburst[root@db1 ~]# systemctl restart chronyd
[root@db1 ~]# systemctl enable chronyd
[root@db1 ~]# chronyc sources
MS Name/IP address Stratum Poll Reach LastRx Last sample
===============================================================================
^* dns.openlab.edu 3 6 17 3 -4445ns[+3146ns] +/- 19ms下载数据库
yum install mariadb-server mariadb-server-galera galera -y
启动数据库
systemctl enable --now mariadb
配置集群
db1：
# 1、停止数据库
[root@db1 ~]# systemctl stop mariadb# 2、增加集群配置
[root@db1 ~]# vim /etc/my.cnf.d/mariadb-server.cnf
[mysqld]
server_id=1
log-bin=mysql-bin[galera]
# 添加以下内容
#Mandatory settings
wsrep_on=ON
wsrep_provider=/usr/lib64/galera/libgalera_smm.so
wsrep_cluster_address="gcomm://192.168.182.135,192.168.182.136,192.168.182.137"
binlog_format=row
wsrep_node_name=db1.openlab.edu
wsrep_node_address=192.168.182.135
default_storage_engine=InnoDB
innodb_autoinc_lock_mode=2
innodb_flush_log_at_trx_commit=0
innodb_buffer_pool_size=2G
#
# Allow server to accept connections on all interfaces.
bind-address=0.0.0.0[root@db1 ~]# vim /etc/my.cnf.d/galera.cnf
# Enable wsrep
wsrep_on=1# 3、初始化集群
[root@db1 ~]# galera_new_cluster
db2：
[root@db2 ~]systemctl stop mariadb
# 1、配置集群
[root@db2 ~] vim /etc/my.cnf.d/galera.cnf
# Enable wsrep
wsrep_on=1[root@db2 ~] vim /etc/my.cnf.d/mariadb-server.cnf
[mysqld]
server_id=2
log-bin=mysql-bin[galera]
# Mandatory settings
wsrep_on=ON
wsrep_provider=/usr/lib64/galera/libgalera_smm.so
wsrep_cluster_address="gcomm://192.168.182.135,192.168.182.136,192.168.182.137"
binlog_format=row
wsrep_node_name=db2.openlab.edu
wsrep_node_address=192.168.182.136
default_storage_engine=InnoDB
innodb_autoinc_lock_mode=2
innodb_flush_log_at_trx_commit=0
innodb_buffer_pool_size=2G
#
# Allow server to accept connections on all interfaces.
bind-address=0.0.0.0db3:
[mysqld]
server_id=3
log-bin=mysql-bin
[galera]
# Mandatory settings
wsrep_on=ON
wsrep_provider=/usr/lib64/galera/libgalera_smm.so
wsrep_cluster_address="gcomm://192.168.182.135,192.168.182.136,192.168.182.137"
binlog_format=row
wsrep_node_name=db3.openlab.edu
wsrep_node_address=192.168.182.137
default_storage_engine=InnoDB
innodb_autoinc_lock_mode=2
innodb_flush_log_at_trx_commit=0
innodb_buffer_pool_size=2G
#
# Allow server to accept connections on all interfaces.
bind-address=0.0.0.0
初始化MariaDB
注：每次重启服务器都会遇到mariadb重启失败问题
输入systemctl start mariadb后会一直卡着不动，最后报错
最后在我研究下发现，每次重启后
执行 ps -ef | grep mysql 命令会看到一个mysql进程，只要他一直在执行，我们的mariadb就一直无法启动，因此三台db服务器都要先找到那个进程号，然后kill -9 进程号。之后mariadb就可以正常启动。
若还不行，那就进行一下操作
vim /var/lib/mysql/grastate.dat# 将这个值设为1
safe_to_bootstrap: 0# 再
galera_new_cluster
# 然后
systemctl start mariadb
检查集群
任意节点登录MariaDB，输入命令“show status like 'wsrep_%';”可查看相应的集群状态
MariaDB [(none)]> show status like 'wsrep_%';
+-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| Variable_name | Value |
+-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| wsrep_local_state_uuid | 387ff18b-04fe-11ef-9116-fa8f804891c7 |
| wsrep_protocol_version | 10 |
| wsrep_last_committed | 4 |
| wsrep_replicated | 0 |
| wsrep_replicated_bytes | 0 |
| wsrep_repl_keys | 0 |
| wsrep_repl_keys_bytes | 0 |
| wsrep_repl_data_bytes | 0 |
| wsrep_repl_other_bytes | 0 |
| wsrep_received | 4 |
| wsrep_received_bytes | 424 |
| wsrep_local_commits | 0 |
| wsrep_local_cert_failures | 0 |
| wsrep_local_replays | 0 |
| wsrep_local_send_queue | 0 |
| wsrep_local_send_queue_max | 1 |
| wsrep_local_send_queue_min | 0 |
| wsrep_local_send_queue_avg | 0 |
| wsrep_local_recv_queue | 0 |
| wsrep_local_recv_queue_max | 1 |
| wsrep_local_recv_queue_min | 0 |
| wsrep_local_recv_queue_avg | 0 |
| wsrep_local_cached_downto | 3 |
| wsrep_flow_control_paused_ns | 0 |
| wsrep_flow_control_paused | 0 |
| wsrep_flow_control_sent | 0 |
| wsrep_flow_control_recv | 0 |
| wsrep_flow_control_active | false |
| wsrep_flow_control_requested | false |
| wsrep_cert_deps_distance | 0 |
| wsrep_apply_oooe | 0 |
| wsrep_apply_oool | 0 |
| wsrep_apply_window | 0 |
| wsrep_apply_waits | 0 |
| wsrep_commit_oooe | 0 |
| wsrep_commit_oool | 0 |
| wsrep_commit_window | 0 |
| wsrep_local_state | 4 |
| wsrep_local_state_comment | Synced |
| wsrep_cert_index_size | 0 |
| wsrep_causal_reads | 0 |
| wsrep_cert_interval | 0 |
| wsrep_open_transactions | 0 |
| wsrep_open_connections | 0 |
| wsrep_incoming_addresses | AUTO,AUTO,AUTO |
| wsrep_cluster_weight | 3 |
| wsrep_desync_count | 0 |
| wsrep_evs_delayed | |
| wsrep_evs_evict_list | |
| wsrep_evs_repl_latency | 0/0/0/0/0 |
| wsrep_evs_state | OPERATIONAL |
| wsrep_gcomm_uuid | c6dc88ce-04ff-11ef-ba8c-53afaf34810b |
| wsrep_gmcast_segment | 0 |
| wsrep_applier_thread_count | 1 |
| wsrep_cluster_capabilities | |
| wsrep_cluster_conf_id | 3 |
| wsrep_cluster_size | 3 |
| wsrep_cluster_state_uuid | 387ff18b-04fe-11ef-9116-fa8f804891c7 |
| wsrep_cluster_status | Primary |
| wsrep_connected | ON |
| wsrep_local_bf_aborts | 0 |
| wsrep_local_index | 1 |
| wsrep_provider_capabilities | :MULTI_MASTER:CERTIFICATION:PARALLEL_APPLYING:TRX_REPLAY:ISOLATION:PAUSE:CAUSAL_READS:INCREMENTAL_WRITESET:UNORDERED:PREORDERED:STREAMING:NBO: |
| wsrep_provider_name | Galera |
| wsrep_provider_vendor | Codership Oy <info@codership.com> |
| wsrep_provider_version | 4.16(rc333b191) |
| wsrep_ready | ON |
| wsrep_rollbacker_thread_count | 1 |
| wsrep_thread_count | 2 |
+-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
69 rows in set (0.002 sec)其中，应当着重关注以下参数：
- wsrep_cluster_state_uuid：集群UUID，集群中所有节点此参数相同；
- wsrep_cluster_size：集群节点数量；
- wsrep_connected：本节点与集群通信状态。
连接mariadb,查看是否启用galera插件
MariaDB [(none)]> show status like "wsrep_ready";
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| wsrep_ready | ON |
+---------------+-------+
1 row in set (0.002 sec)
2、查看目前集群机器数
MariaDB [(none)]> show status like "wsrep_cluster_size";
+--------------------+-------+
| Variable_name | Value |
+--------------------+-------+
| wsrep_cluster_size | 3 |
+--------------------+-------+
1 row in set (0.001 sec)
haproxy 负载均衡
三台db都操作
# 1、安装haproxy
# yum install -y haproxy# 2、配置haproxy
# cat /etc/haproxy/haproxy.cfg
#---------------------------------------------------------------------
# Example configuration for a possible web application. See the
# full configuration options online.
#
# https://www.haproxy.org/download/1.8/doc/configuration.txt
#
#---------------------------------------------------------------------globallog 127.0.0.1 local2chroot /var/lib/haproxypidfile /var/run/haproxy.piduser haproxygroup haproxydaemonmaxconn 4000defaultsmode httplog globaloption httplogoption dontlognullretries 3timeout http-request 5stimeout queue 1mtimeout connect 5stimeout client 1mtimeout server 1mtimeout http-keep-alive 5stimeout check 5smaxconn 3000listen mariadbmode tcp bind *:33060 balance roundrobinoption tcplogoption tcpka server db1 192.168.182.135:3306 weight 1 check inter 2000 rise 2 fall 5 server db2 192.168.182.136:3306 weight 1 check inter 2000 rise 2 fall 5server db3 192.168.182.137:3306 weight 1 check inter 2000 rise 2 fall 5# 3、启动haproxy
# systemctl enable --now haproxy# 4、检查
# ss -lntp | grep 33060
LISTEN 0 3000 0.0.0.0:33060 0.0.0.0:* users:(("haproxy",pid=2587,fd=6))
8、配置高可用
三台db都操作
# 1、安装keepalived
# yum install keepalived -y# 2、配置keepalived
db1 配置：[root@db1 ~]# cat /etc/keepalived/keepalived.conf
! Configuration File for keepalivedglobal_defs {router_id db1
}vrrp_script chk_haproxy {script "/etc/keepalived/chk.sh"interval 2
}vrrp_instance VI_1 {state BACKUPnopreemptinterface ens192virtual_router_id 51priority 100advert_int 1authentication {auth_type PASSauth_pass 1111}virtual_ipaddress {192.168.182.200 # 设置vip}track_script {chk_haproxy # 因为keepalived中没有对haproxy的健康巡检，所以写一个健康检查脚本}
}[root@db1 ~]# vim /etc/keepalived/chk.sh
#!/bin/bashA=`ps -C haproxy --no-header | wc -l`if [ $A -eq 0 ]
thensystemctl restart haproxyecho "Start haproxy" &> /dev/nullsleep 3if [ `ps -C haproxy --no-header | wc -l` -eq 0 ]thensystemctl stop keepalivedecho "Stop keepalived" &> /dev/nullelseexitfi
fi
## 写完脚本后，记得给用户执行脚本的权限
chmod + x chk.sh
db2配置：
[root@db1 ~]# scp /etc/keepalived/{keepalived.conf,chk.sh} db2.openlab.edu:/etc/keepalived/
修改keepalived配置文件
[root@db2 keepalived]# cat keepalived.conf
! Configuration File for keepalivedglobal_defs {router_id db2
}vrrp_script chk_haproxy {script "/etc/keepalived/chk.sh"interval 2
}vrrp_instance VI_1 {state BACKUPnopreemptinterface ens192virtual_router_id 51priority 80advert_int 1authentication {auth_type PASSauth_pass 1111}virtual_ipaddress {192.168.182.200}track_script {chk_haproxy}
}db3配置：
[root@db1 ~]# scp /etc/keepalived/{keepalived.conf,chk.sh} db3.openlab.edu:/etc/keepalived/
修改keepalived配置文件
[root@db3 ~]# cat /etc/keepalived/keepalived.conf
! Configuration File for keepalivedglobal_defs {router_id db3
}vrrp_script chk_haproxy {script "/etc/keepalived/chk.sh"interval 2
}vrrp_instance VI_1 {state BACKUPnopreemptinterface ens192virtual_router_id 51priority 60advert_int 1authentication {auth_type PASSauth_pass 1111}virtual_ipaddress {192.168.182.200}track_script {chk_haproxy}
}# 3、启动keepalived
# systemctl enable --now keepalived# 4、测试负载均衡
任意一个数据库节点登录创建并授权用户
MariaDB [(none)]> CREATE USER admin@'%' IDENTIFIED BY '123456';
Query OK, 0 rows affected (0.017 sec)MariaDB [(none)]> GRANT ALL ON *.* to admin@'%';
Query OK, 0 rows affected (0.013 sec)负载均衡测试：
[root@db2 keepalived]# mysql -uadmin -p123456 -P33060 -h192.168.182.200 -e " show variables like '%server_id%'"
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| server_id | 2 |
+---------------+-------+
[root@db2 keepalived]# mysql -uadmin -p123456 -P33060 -h192.168.182.200 -e " show variables like '%server_id%'"
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| server_id | 3 |
+---------------+-------+
[root@db2 keepalived]# mysql -uadmin -p123456 -P33060 -h192.168.182.200 -e " show variables like '%server_id%'"
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| server_id | 1 |
+---------------+-------+
web服务器配置
1、hosts解析
hostnamectl set-hostname realserver1.openlab.edu
hostnamectl set-hostname realserver2.openlab.edu# cat >> /etc/hosts << EOF
192.168.182.132 store1.openlab.edu store1
192.168.182.133 store2.openlab.edu store2
192.168.182.134 store3.openlab.edu store3
192.168.182.135 db1.openlab.edu db1
192.168.182.136 db2.openlab.edu db2
192.168.182.137 db3.openlab.edu db3
192.168.182.130 realserver1.openlab.edu realserver1
192.168.182.131 realserver2.openlab.edu realserver2
192.168.182.138 dns.openlab.eduEOF
2、时间同步
3、安装jdk
yum localinstall jdk-8u261-linux-x64.rpm -y
4、创建挂载点，并挂载cephfs
mkdir /apps
5、配置ceph客户端
# 配置ceph yum 源
cat > /etc/yum.repos.d/ceph.repo <<EOF
[ceph]
name=ceph x86_64
baseurl=https://repo.huaweicloud.com/ceph/rpm-quincy/el8/x86_64
enabled=1
gpgcheck=0
[ceph-noarch]
name=ceph noarch
baseurl=https://repo.huaweicloud.com/ceph/rpm-quincy/el8/noarch
enabled=1
gpgcheck=0
[ceph-source]
name=ceph SRPMS
baseurl=https://repo.huaweicloud.com/ceph/rpm-quincy/el8/SRPMS
enabled=1
gpgcheck=0
EOF# 安装 ceph-common
dnf install -y ceph-common --nobest# rs1,rs2从 store1 拷贝 ceph.conf ceph.client.rw.keyring 到 /etc/ceph 目录
[root@store1 ~]# ceph auth get client.rw -o /etc/ceph/ceph.client.rw.keyring[root@realserver1 ~]# scp store1:/etc/ceph/{ceph.conf,ceph.client.rw.keyring} /etc/ceph
[root@realserver2 ~]# scp store1:/etc/ceph/{ceph.conf,ceph.client.rw.keyring} /etc/ceph
# ceph --id rw -scluster:id: d66290d6-0fff-11ef-aa38-e2b603ebf5b6health: HEALTH_OKservices:mon: 2 daemons, quorum store3,store2 (age 95m)mgr: store2.rrptfl(active, since 93m), standbys: store3.evqoexmds: 1/1 daemons up, 1 standbyosd: 9 osds: 9 up (since 94m), 9 in (since 98m)data:volumes: 1/1 healthypools: 3 pools, 273 pgsobjects: 24 objects, 579 KiBusage: 2.6 GiB used, 447 GiB / 450 GiB availpgs: 273 active+clean6、挂载 cephfs
#这里的挂载，在重启后可能会失效，当重启服务器后发现网页访问不到jeesns，可以查看此出挂载问题
echo ':/ /apps ceph defaults,_netdev,name=rw 0 0' >> /etc/fstab
mount -a
7、上传tomcat 并解压至 /apps
⚠️ 只在realserver1操作：
[root@realserver1 ~]# dnf install tar -y
[root@realserver1 ~]# tar xf apache-tomcat-8.5.20.tar.gz -C /apps/
[root@realserver1 ~]# mv /apps/apache-tomcat-8.5.20/ /apps/tomcat提高服务管理脚本cat > /usr/lib/systemd/system/tomcat.service << EOF
[Unit]
Description=Apache Tomcat 8
After=syslog.target network.target[Service]
Type=forking
Environment=JAVA_HOME=/usr/java/jdk1.8.0_261-amd64
Environment=CATALINA_HOME=/apps/tomcatExecStart=/apps/tomcat/bin/startup.sh
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/bin/kill -s QUIT $MAINPID
PrivateTmp=true[Install]
WantedBy=multi-user.target
EOF下面启动服务两台机器同时操作
[root@realserver1 ~]# systemctl daemon-reload
[root@realserver1 ~]# systemctl start tomcat
[root@realserver1 ~]# systemctl enable tomcat
8、部署应用包
本文使用 JEESNS只在一个应用节点操作即可。因为已经将cpeh挂载到/apps目录下，一机操作，两机都有
# 上传并解压包
[root@realserver1 ~]# dnf install unzip -y
[root@realserver1 ~]# unzip jeesns-v1.4.2.zip # 数据库部分
MariaDB [(none)]> create database jeesns character set utf8;
Query OK, 1 row affected (0.004 sec)MariaDB [(none)]> grant all on jeesns.* to jeesns@'%' identified by 'jeesns';
Query OK, 0 rows affected (0.010 sec)# 导入数据
[root@realserver1 ~]# cd /root/jeesns-v1.4.2
[root@realserver1 jeesns-v1.4.2]# scp jeesns-web/database/jeesns.sql db1:~
MariaDB [jeesns]> source /root/jeesns.sql# 部署war包
[root@realserver1 jeesns-v1.4.2]# rm -rf /apps/tomcat/webapps/*
[root@realserver1 jeesns-v1.4.2]# mv war/jeesns.war /apps/tomcat/webapps/ROOT.war# 修改jdbc
vi /apps/tomcat/webapps/ROOT/WEB-INF/classes/jeesns.propertiesjdbc.driver=com.mysql.jdbc.Driverjdbc.url=jdbc:mysql://192.168.182.200:33060/jeesns?characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true
jdbc.user=jeesns
jdbc.password=jeesnsmanagePath=manage
groupPath=group
weiboPath=weibo
frontTemplate=front
memberTemplate=member
manageTemplate=manage
mobileTemplate=mobile# 两台应用服务器重启tomcat
# systemctl restart tomcat此出演示web页面成果
[root@realserver1 jeesns-v1.4.2]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lovalid_lft forever preferred_lft foreverinet6 ::1/128 scope host valid_lft forever preferred_lft forever
2: ens160: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000link/ether 00:0c:29:3d:27:73 brd ff:ff:ff:ff:ff:ffaltname enp3s0inet 192.168.50.203/24 brd 192.168.50.255 scope global noprefixroute ens160valid_lft forever preferred_lft foreverinet6 fe80::c8d:5b9e:e18a:bd40/64 scope link noprefixroute valid_lft forever preferred_lft forever
3: ens192: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000link/ether 00:0c:29:3d:27:7d brd ff:ff:ff:ff:ff:ffaltname enp11s0浏览器访问192.168.50.203:8111 #默认为8080端口，这里是我修改了tomcat的端口
访问192.168.50.204:8111
负载高可用配置
时间同步与hosts解析与前面相同
1、nginx配置负载均衡
# dnf install -y nginx
# cd /etc/nginx/conf.d/
# vi web.conf
upstream appPools {ip_hash;server 192.168.182.130:8111;server 192.168.182.131:8111;
}server {listen 80;server_name www.openlab.edu; #在windows上配置个hosts解析后，在浏览器也能访问www.openlab.edulocation / {proxy_pass http://appPools;proxy_set_header Host $host;proxy_set_header X-Forwarded-For $remote_addr;}
}
# systemctl enable --now nginx
2、keepalived 高可用配置
# dnf install -y keepalived
# vi /etc/keepalived/check_nginx.sh
#!/bin/bash
#代码一定注意空格，逻辑就是：如果nginx进程不存在则启动nginx,如果nginx无法启动则kill掉keepalived所有进程
A=`ps -C nginx --no-header |wc -l`
if [ $A -eq 0 ];thensystemctl start nginxsleep 3if [ `ps -C nginx --no-header |wc -l` -eq 0 ]thensystemctl stop keepalivedelseexitfi
fi
#添加执行权限
chmod +x /etc/keepalived/check_nginx.sh
# directory1 keepalived 配置
# vi /etc/keepalived/keepalived.conf ! Configuration File for keepalivedglobal_defs {router_id nginx1
}vrrp_script chk_nginx {script "/etc/keepalived/check_nginx.sh"interval 2
}vrrp_instance nginx {state BACKUPnopreemptinterface ens160virtual_router_id 52priority 100advert_int 1authentication {auth_type PASSauth_pass 1111}virtual_ipaddress {192.168.50.249}track_script {chk_nginx}
}
# directory2 配置# vi /etc/keepalived/keepalived.conf ! Configuration File for keepalivedglobal_defs {router_id nginx2
}vrrp_script chk_nginx {script "/etc/keepalived/check_nginx.sh"interval 2
}vrrp_instance nginx {state BACKUPnopreemptinterface ens160virtual_router_id 52priority 80advert_int 1authentication {auth_type PASSauth_pass 1111}virtual_ipaddress {192.168.50.249}track_script {chk_nginx}
}
启动keepalived
# systemctl enable --now keepalived.service
测试：
负载调度器1 ip
[root@directory1 conf.d]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lovalid_lft forever preferred_lft foreverinet6 ::1/128 scope host valid_lft forever preferred_lft forever
2: ens160: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000link/ether 00:0c:29:d2:fe:ae brd ff:ff:ff:ff:ff:ffaltname enp3s0inet 192.168.50.201/24 brd 192.168.50.255 scope global noprefixroute ens160valid_lft forever preferred_lft foreverinet 192.168.50.249/32 scope global ens160valid_lft forever preferred_lft foreverinet6 fe80::1ea4:f154:3193:1694/64 scope link noprefixroute valid_lft forever preferred_lft forever
3: ens224: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000link/ether 00:0c:29:d2:fe:b8 brd ff:ff:ff:ff:ff:ffaltname enp19s0inet 192.168.182.128/24 brd 192.168.182.255 scope global dynamic noprefixroute ens224valid_lft 1615sec preferred_lft 1615secinet6 fe80::a640:e0be:5c0a:6c45/64 scope link noprefixroute valid_lft forever preferred_lft forever
负载调度器2 ip
[root@directory2 conf.d]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lovalid_lft forever preferred_lft foreverinet6 ::1/128 scope host valid_lft forever preferred_lft forever
2: ens160: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000link/ether 00:0c:29:db:5c:b4 brd ff:ff:ff:ff:ff:ffaltname enp3s0inet 192.168.50.202/24 brd 192.168.50.255 scope global noprefixroute ens160valid_lft forever preferred_lft foreverinet6 fe80::1f49:8a9a:389:4236/64 scope link noprefixroute valid_lft forever preferred_lft forever
3: ens192: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000link/ether 00:0c:29:db:5c:be brd ff:ff:ff:ff:ff:ffaltname enp11s0inet 192.168.182.129/24 brd 192.168.182.255 scope global noprefixroute ens192valid_lft forever preferred_lft foreverinet6 fe80::a5f3:ea22:173f:9321/64 scope link noprefixroute valid_lft forever preferred_lft forever
，重新生成)
- ION简化版本)
