由于losf引起的pxc启动报错处理

PXC主节点启动完成后，再启动node1，error日志报错：

2017-05-02T15:23:42.830888Z 0 [ERROR] WSREP: Failed to read 'ready <addr>' from: wsrep_sst_rsync --role 'joiner' --address '192.168.30

.221:5020' --datadir '/data/mysql/mysql_3307/data/' --defaults-file '/data/mysql/mysql_3307/my.cnf' --defaults-group-suffix '' --paren

t '5303'  ''

        Read: ''lsof' not found in PATH'

2017-05-02T15:23:42.831042Z 0 [ERROR] WSREP: Process completed with error: wsrep_sst_rsync --role 'joiner' --address '192.168.30.221:5

020' --datadir '/data/mysql/mysql_3307/data/' --defaults-file '/data/mysql/mysql_3307/my.cnf' --defaults-group-suffix '' --parent '530

3'  '' : 2 (No such file or directory)

2017-05-02T15:23:42.831131Z 2 [ERROR] WSREP: Failed to prepare for 'rsync' SST. Unrecoverable.

2017-05-02T15:23:42.831151Z 2 [ERROR] Aborting

 

检查思路：

1、先检查rsync是否已安装：

[root@localhost mysql]# yum search rsync

Loaded plugins: fastestmirror

Loading mirror speeds from cached hostfile

 * base: mirrors.sohu.com

 * extras: mirrors.sohu.com

 * updates: mirrors.aliyun.com

================ N/S matched: rsync ===============================

libguestfs-rsync.x86_64 : rsync support for libguestfs

rsync.x86_64 : A program for synchronizing files over a network

 

  Name and summary matches only, use "search all" for everything.

表示rsync已经安装好。

2、检查lsof是否安装：

[root@localhost mysql]# yum search lsof

Loaded plugins: fastestmirror

Loading mirror speeds from cached hostfile

 * base: mirrors.sohu.com

 * extras: mirrors.sohu.com

 * updates: mirrors.aliyun.com

================= N/S matched: lsof =================

lsof.x86_64 : A utility which lists open files on a Linux/UNIX system

 

  Name and summary matches only, use "search all" for everything.

 

即lsof未安装。

先查找centos7的lsof的rpm包：

http://mirror.centos.org/centos/7/os/x86_64/Packages/

找到后下载，传给服务器：

[root@localhost src]# rpm -ivh lsof-4.87-4.el7.x86_64.rpm

Preparing...                          ################################# [100%]

Updating / installing...

   1:lsof-4.87-4.el7                  ################################# [100%]

安装完成后再启动node2,启动完成：

[root@localhost mysql]# ./bin/mysqld_safe --defaults-file=/data/mysql/mysql_3307/my.cnf

2017-05-02T16:18:06.438428Z mysqld_safe Logging to '/data/mysql/mysql_3307/logs/error.log'.

2017-05-02T16:18:06.441666Z mysqld_safe error: log-error set to '/data/mysql/mysql_3307/logs/error.log', however file don't exists. Create writable for user 'mysql'.

[root@localhost mysql]# touch /data/mysql/mysql_3307/logs/error.log

[root@localhost mysql]# chown -R mysql:mysql /data/mysql/mysql_3307/

[root@localhost mysql]# ./bin/mysqld_safe --defaults-file=/data/mysql/mysql_3307/my.cnf

Usage: grep [OPTION]... PATTERN [FILE]...

Try 'grep --help' for more information.

grep: write error: Broken pipe

2017-05-02T16:18:35.846719Z mysqld_safe Logging to '/data/mysql/mysql_3307/logs/error.log'.

2017-05-02T16:18:35.851450Z mysqld_safe Logging to '/data/mysql/mysql_3307/logs/error.log'.

2017-05-02T16:18:35.889501Z mysqld_safe Starting mysqld daemon with databases from /data/mysql/mysql_3307/data

2017-05-02T16:18:35.896799Z mysqld_safe Skipping wsrep-recover for empty datadir: /data/mysql/mysql_3307/data

2017-05-02T16:18:35.900008Z mysqld_safe Assigning 00000000-0000-0000-0000-000000000000:-1 to wsrep_start_position

 

 

在主节点上查看：

mysql> show global status like 'wsrep_cluster_size';

+--------------------+-------+

| Variable_name      | Value |

+--------------------+-------+

| wsrep_cluster_size | 2     |

+--------------------+-------+

1 row in set (0.01 sec)

添加节点成功！