gitlab同步复制repo以及数据库

同步复制repo、数据库信息；

A、为什么不使用lsyncd同步pg，因为尝试之后，gitlab 502，所以分开，pg数据很少去更新；

B、为什么不pg主从，因为pg从库的权限是只读的，gitlab登录是update sql，所以无法登录，故而不做pg主从；

下载地址：
http://www.rpmfind.net/linux/rpm2html/search.php?query=lsyncd

# download
wget http://www.rpmfind.net/linux/epel/7/x86_64/Packages/l/lsyncd-2.2.2-1.el7.x86_64.rpm
# install
rpm -ivh lsyncd-2.2.2-1.el7.x86_64.rpm

配置lsyncd配置信息

----
-- User configuration file for lsyncd.
--
-- Simple example for default rsync, but executing moves through on the target.
--
-- For more examples, see /usr/share/doc/lsyncd*/examples/
-- 
-- sync{default.rsyncssh, source="/var/www/html", host="localhost", targetdir="/tmp/htmlcopy/"}

settings {
    logfile ="/var/log/lsyncd/lsyncd.log",
    statusFile ="/var/log/lsyncd/lsyncd.status",
    inotifyMode = "CloseWrite",
    maxProcesses = 8,
    }


-- 远程本地gitlab目录同步到备库，rsync+ssh
sync {
    default.rsync,
    source    = "/var/opt/gitlab/",
    target    = "root@slaveIP:/var/opt/gitlab/",
    -- 上面target，注意如果是普通用户，必须拥有写权限
    -- 排除选项
    exclude = { "backups" ,"gitlab-ci", "sockets", "gitlab.yml", "redis", "postmaster.pid","recovery.conf","postgresql.conf","pg_hba.conf","postgresql10 * * * * /usr/bin/sh /opt/pg_syncd.sh

切记不可设置为自启动，避免主从切换数据错乱

# lsyncd,切记不可设置为自启动，避免主从切换数据错乱
systemctl start lsyncd

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