无法yum update

centos 6.9 x64
宝塔3.8


# yum -y update
Loaded plugins: security
Setting up Update Process
Resolving Dependencies
--> Running transaction check
---> Package libcurl.x86_64 0:7.19.7-52.el6 will be updated
--> Processing Dependency: libcurl = 7.19.7-52.el6 for package: curl-7.19.7-52.el6.x86_64
---> Package libcurl.x86_64 0:7.19.7-53.el6_9 will be an update
---> Package libcurl-devel.x86_64 0:7.19.7-52.el6 will be updated
---> Package libcurl-devel.x86_64 0:7.19.7-53.el6_9 will be an update
--> Running transaction check
---> Package libcurl.i686 0:7.19.7-52.el6 will be installed
--> Processing Dependency: libssh2(x86-32) >= 1.4.2 for package: libcurl-7.19.7-52.el6.i686
--> Processing Dependency: libz.so.1 for package: libcurl-7.19.7-52.el6.i686
........
---> Package nss-softokn.i686 0:3.14.3-23.3.el6_8 will be installed
--> Processing Dependency: libsqlite3.so.0 for package: nss-softokn-3.14.3-23.3.el6_8.i686
---> Package openssl.i686 0:1.0.1e-57.el6 will be installed
--> Running transaction check
---> Package db4.i686 0:4.7.25-22.el6 will be installed
---> Package sqlite.i686 0:3.6.20-1.el6_7.2 will be installed
--> Processing Dependency: libreadline.so.6 for package: sqlite-3.6.20-1.el6_7.2.i686
--> Running transaction check
---> Package readline.i686 0:6.0-4.el6 will be installed
--> Processing Dependency: libtinfo.so.5 for package: readline-6.0-4.el6.i686
--> Running transaction check
---> Package ncurses-libs.i686 0:5.7-4.20090207.el6 will be installed
--> Finished Dependency Resolution
Error:  Multilib version problems found. This often means that the root
       cause is something else and multilib version checking is just
       pointing out that there is a problem. Eg.:
      
         1. You have an upgrade for libcurl which is missing some
            dependency that another package requires. Yum is trying to
            solve this by installing an older version of libcurl of the
            different architecture. If you exclude the bad architecture
            yum will tell you what the root cause is (which package
            requires what). You can try redoing the upgrade with
            --exclude libcurl.otherarch ... this should give you an error
            message showing the root cause of the problem.
      
         2. You have multiple architectures of libcurl installed, but
            yum can only see an upgrade for one of those arcitectures.
            If you don't want/need both architectures anymore then you
            can remove the one with the missing update and everything
            will work.
      
         3. You have duplicate versions of libcurl installed already.
            You can use "yum check" to get yum show these errors.
      
       ...you can also use --setopt=protected_multilib=false to remove
       this checking, however this is almost never the correct thing to
       do as something else is very likely to go wrong (often causing
       much more problems).
      
       Protected multilib versions: libcurl-7.19.7-53.el6_9.x86_64 != libcurl-7.19.7-52.el6.i686




# yum check
Loaded plugins: security
curl-7.50.3-1.el6.x86_64 is a duplicate with curl-7.19.7-52.el6.x86_64
mysql-5.6.35-1.el6.x86_64 is a duplicate with mysql-5.1.73-8.el6_8.x86_64
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(DBI)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(GD)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(JSON)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(Time::HiRes)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(lib::mtr_gcov.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(lib::mtr_gprof.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(lib::mtr_io.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(lib::mtr_misc.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(lib::mtr_process.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(lib::v1/mtr_cases.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(lib::v1/mtr_gcov.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(lib::v1/mtr_gprof.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(lib::v1/mtr_im.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(lib::v1/mtr_io.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(lib::v1/mtr_match.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(lib::v1/mtr_misc.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(lib::v1/mtr_process.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(lib::v1/mtr_report.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(lib::v1/mtr_stress.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(lib::v1/mtr_timer.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(lib::v1/mtr_unique.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(mtr_io.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(mtr_misc.pl)
mysql-5.6.35-1.el6.x86_64 has missing requires of perl(mtr_process.pl)
pcre-8.36-1.el6.x86_64 is a duplicate with pcre-7.8-7.el6.x86_64
php-5.6.30-1.el6.x86_64 has missing requires of xmlrpc
Error: check all

yum ，命令后面加 --setopt=protected_multilib=false