Cleaning /var files system

My /var files system is at 98%. I searched for any file that is bigger 15M. Please let me know what file I can delete from the system. Please advise!

[root@usbalp-nis01 var]# df -h |grep /var
/dev/mapper/vg00-var 4.0G 3.9G 102M 98% /var
[root@usbalp-nis01 var]#
[root@usbalp-nis01 var]# find . -size +10M
./lib/rpm/Packages
./lib/samba/locking.tdb
./lib/mlocate/mlocate.db
./lib/mysql/ibdata1
./lib/mysql/ib_logfile1
./lib/mysql/ib_logfile0
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/gen/primary.xml
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/gen/other.xml
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/gen/primary.xml.sqlite
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/gen/other.xml.sqlite
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/firefox-31.5.0-2.el7_0.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/glibc-common-2.17-55.el7_0.5.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/java-1.7.0-openjdk-headless-1.7.0.75-2.5.4.2.el7_0.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-123.20.1.el7.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/linux-firmware-20140804-0.1.git6bce2b0.el7_0.noarch.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/mesa-dri-drivers-9.2.5-6.20131218.el7_0.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/glibc-common-2.17-78.el7.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-229.el7.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/libkkc-data-0.3.1-5.el7.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/linux-firmware-20140911-0.1.git365e80c.el7.noarch.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/mesa-dri-drivers-10.2.7-5.20140910.el7.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/firefox-31.5.3-3.el7_1.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/java-1.7.0-openjdk-headless-1.7.0.75-2.5.4.7.el7_1.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-229.1.2.el7.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/firefox-38.0-3.el7_1.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/java-1.7.0-openjdk-headless-1.7.0.79-2.5.5.1.el7_1.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-229.4.2.el7.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kdelibs-4.10.5-6.el7.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/firefox-38.4.0-1.el7_1.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/mesa-dri-drivers-10.2.7-5.20140910.el7_1.1.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/java-1.7.0-openjdk-headless-1.7.0.91-2.6.2.1.el7_1.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-229.20.1.el7.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/gnome-getting-started-docs-3.14.1.0.2-1.el7.noarch.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/gnome-backgrounds-3.14.1-1.el7.noarch.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-327.el7.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kdelibs-4.14.8-4.el7.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/linux-firmware-20150904-43.git6ebf5d5.el7.noarch.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/gnome-user-docs-3.14.2-1.el7.noarch.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/primary.xml.gz
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/other.xml.gz
./cache/yum/x86_64/7Server/rhel-x86_64-server-optional-7/gen/primary.xml
./cache/yum/x86_64/7Server/rhel-x86_64-server-optional-7/gen/primary.xml.sqlite
./cache/yum/x86_64/7Server/mysql56-community/packages/mysql-community-server-5.6.27-2.el7.x86_64.rpm
./cache/yum/x86_64/7Server/mysql56-community/packages/mysql-community-client-5.6.27-2.el7.x86_64.rpm
[root@usbalp-nis01 var]# ll lib/rpm/Packages
-rw-r--r--. 1 root root 84340736 Sep 25 15:37 lib/rpm/Packages
[root@usbalp-nis01 var]# ll lib/samba/locking.tdb
-rw-r--r--. 1 root root 21700608 Nov 20 08:09 lib/samba/locking.tdb
[root@usbalp-nis01 var]# ll lib/mlocate/mlocate.db
-rw-r-----. 1 root slocate 510992794 Nov 19 03:21 lib/mlocate/mlocate.db
[root@usbalp-nis01 var]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg00-root 4.4G 3.9G 611M 87% /
devtmpfs 911M 0 911M 0% /dev
tmpfs 921M 88K 921M 1% /dev/shm
tmpfs 921M 90M 831M 10% /run
tmpfs 921M 0 921M 0% /sys/fs/cgroup
/dev/mapper/vg01-home 3.8T 3.5T 345G 92% /home
/dev/mapper/vg00-usr_local 125M 6.7M 119M 6% /usr/local
/dev/mapper/vg00-opt 125M 6.6M 119M 6% /opt
/dev/mapper/vg00-tmp 509M 27M 482M 6% /tmp
/dev/mapper/vg00-var 4.0G 3.9G 104M 98% /var
/dev/sda1 253M 194M 59M 77% /boot
/dev/mapper/vg01-apps32 15G 7.7G 6.3G 56% /home/apps32
[root@usbalp-nis01 var]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg00-root 4.4G 3.9G 611M 87% /
devtmpfs 911M 0 911M 0% /dev
tmpfs 921M 88K 921M 1% /dev/shm
tmpfs 921M 90M 831M 10% /run
tmpfs 921M 0 921M 0% /sys/fs/cgroup
/dev/mapper/vg01-home 3.8T 3.5T 345G 92% /home
/dev/mapper/vg00-usr_local 125M 6.7M 119M 6% /usr/local
/dev/mapper/vg00-opt 125M 6.6M 119M 6% /opt
/dev/mapper/vg00-tmp 509M 27M 482M 6% /tmp
/dev/mapper/vg00-var 4.0G 3.9G 104M 98% /var
/dev/sda1 253M 194M 59M 77% /boot
/dev/mapper/vg01-apps32 15G 7.7G 6.3G 56% /home/apps32
[root@usbalp-nis01 var]# find . -size +15M
./lib/rpm/Packages
./lib/samba/locking.tdb
./lib/mlocate/mlocate.db
./lib/mysql/ib_logfile1
./lib/mysql/ib_logfile0
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/gen/primary.xml
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/gen/other.xml
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/gen/primary.xml.sqlite
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/gen/other.xml.sqlite
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/firefox-31.5.0-2.el7_0.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/java-1.7.0-openjdk-headless-1.7.0.75-2.5.4.2.el7_0.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-123.20.1.el7.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/linux-firmware-20140804-0.1.git6bce2b0.el7_0.noarch.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-229.el7.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/linux-firmware-20140911-0.1.git365e80c.el7.noarch.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/firefox-31.5.3-3.el7_1.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/java-1.7.0-openjdk-headless-1.7.0.75-2.5.4.7.el7_1.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-229.1.2.el7.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/firefox-38.0-3.el7_1.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/java-1.7.0-openjdk-headless-1.7.0.79-2.5.5.1.el7_1.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-229.4.2.el7.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/firefox-38.4.0-1.el7_1.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/java-1.7.0-openjdk-headless-1.7.0.91-2.6.2.1.el7_1.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-229.20.1.el7.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/gnome-backgrounds-3.14.1-1.el7.noarch.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-327.el7.x86_64.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/linux-firmware-20150904-43.git6ebf5d5.el7.noarch.rpm
./cache/yum/x86_64/7Server/rhel-x86_64-server-7/other.xml.gz
./cache/yum/x86_64/7Server/rhel-x86_64-server-optional-7/gen/primary.xml
./cache/yum/x86_64/7Server/rhel-x86_64-server-optional-7/gen/primary.xml.sqlite
./cache/yum/x86_64/7Server/mysql56-community/packages/mysql-community-server-5.6.27-2.el7.x86_64.rpm
./cache/yum/x86_64/7Server/mysql56-community/packages/mysql-community-client-5.6.27-2.el7.x86_64.rpm
[root@usbalp-nis01 var]# ll lib/rpm/Packages
-rw-r--r--. 1 root root 84340736 Sep 25 15:37 lib/rpm/Packages
[root@usbalp-nis01 var]# ll lib/samba/locking.tdb
-rw-r--r--. 1 root root 21700608 Nov 20 08:15 lib/samba/locking.tdb
[root@usbalp-nis01 var]# ll lib/mlocate/mlocate.db
-rw-r-----. 1 root slocate 510992794 Nov 19 03:21 lib/mlocate/mlocate.db
[root@usbalp-nis01 var]# ll lib/mysql/ib_logfile1
-rw-rw----. 1 mysql mysql 50331648 Aug 19 16:57 lib/mysql/ib_logfile1
[root@usbalp-nis01 var]# ll lib/mysql/ib_logfile0
-rw-rw----. 1 mysql mysql 50331648 Aug 19 16:57 lib/mysql/ib_logfile0
[root@usbalp-nis01 var]# expr 50331648 / 1024
49152
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/gen/primary.xml
-rw-r--r--. 1 root root 74771864 Nov 19 03:52 cache/yum/x86_64/7Server/rhel-x86_64-server-7/gen/primary.xml
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/gen/other.xml
-rw-r--r--. 1 root root 380546619 Nov 19 03:52 cache/yum/x86_64/7Server/rhel-x86_64-server-7/gen/other.xml
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/gen/primary.xml.sqlite
-rw-r--r--. 1 root root 92409856 Nov 19 06:02 cache/yum/x86_64/7Server/rhel-x86_64-server-7/gen/primary.xml.sqlite
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/gen/other.xml.sqlite
-rw-r--r--. 1 root root 388567040 Nov 19 17:35 cache/yum/x86_64/7Server/rhel-x86_64-server-7/gen/other.xml.sqlite
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/firefox-31.5.0-2.el7_0.x86_64.rpm
-rw-r--r--. 1 root root 63725392 Feb 24 2015 cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/firefox-31.5.0-2.el7_0.x86_64.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/java-1.7.0-openjdk-headless-1.7.0.75-2.5.4.2.el7_0.x86_64.rpm
-rw-r--r--. 1 root root 26274616 Jan 20 2015 cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/java-1.7.0-openjdk-headless-1.7.0.75-2.5.4.2.el7_0.x86_64.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-123.20.1.el7.x86_64.rpm
-rw-r--r--. 1 root root 30301292 Jan 28 2015 cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-123.20.1.el7.x86_64.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/linux-firmware-20140804-0.1.git6bce2b0.el7_0.noarch.rpm
-rw-r--r--. 1 root root 21914840 Sep 22 2014 cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/linux-firmware-20140804-0.1.git6bce2b0.el7_0.noarch.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-229.el7.x86_64.rpm
-rw-r--r--. 1 root root 32385364 Feb 23 2015 cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-229.el7.x86_64.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/linux-firmware-20140911-0.1.git365e80c.el7.noarch.rpm
-rw-r--r--. 1 root root 17837664 Feb 23 2015 cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/linux-firmware-20140911-0.1.git365e80c.el7.noarch.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/firefox-31.5.3-3.el7_1.x86_64.rpm
-rw-r--r--. 1 root root 63730252 Mar 24 2015 cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/firefox-31.5.3-3.el7_1.x86_64.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/java-1.7.0-openjdk-headless-1.7.0.75-2.5.4.7.el7_1.x86_64.rpm
-rw-r--r--. 1 root root 26289636 Mar 26 2015 cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/java-1.7.0-openjdk-headless-1.7.0.75-2.5.4.7.el7_1.x86_64.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-229.1.2.el7.x86_64.rpm
-rw-r--r--. 1 root root 32388604 Mar 26 2015 cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-229.1.2.el7.x86_64.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/firefox-38.0-3.el7_1.x86_64.rpm
-rw-r--r--. 1 root root 74980552 May 12 2015 cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/firefox-38.0-3.el7_1.x86_64.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/java-1.7.0-openjdk-headless-1.7.0.79-2.5.5.1.el7_1.x86_64.rpm
-rw-r--r--. 1 root root 26304868 Apr 14 2015 cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/java-1.7.0-openjdk-headless-1.7.0.79-2.5.5.1.el7_1.x86_64.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-229.4.2.el7.x86_64.rpm
-rw-r--r--. 1 root root 32412080 May 12 2015 cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-229.4.2.el7.x86_64.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/firefox-38.4.0-1.el7_1.x86_64.rpm
-rw-r--r--. 1 root root 75005860 Nov 4 00:13 cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/firefox-38.4.0-1.el7_1.x86_64.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/java-1.7.0-openjdk-headless-1.7.0.91-2.6.2.1.el7_1.x86_64.rpm
-rw-r--r--. 1 root root 26483576 Oct 21 11:41 cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/java-1.7.0-openjdk-headless-1.7.0.91-2.6.2.1.el7_1.x86_64.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-229.20.1.el7.x86_64.rpm
-rw-r--r--. 1 root root 32430412 Nov 3 08:26 cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-229.20.1.el7.x86_64.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/gnome-backgrounds-3.14.1-1.el7.noarch.rpm
-rw-r--r--. 1 root root 16367884 Sep 29 08:06 cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/gnome-backgrounds-3.14.1-1.el7.noarch.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-327.el7.x86_64.rpm
-rw-r--r--. 1 root root 34629920 Nov 1 10:32 cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/kernel-3.10.0-327.el7.x86_64.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/linux-firmware-20150904-43.git6ebf5d5.el7.noarch.rpm
-rw-r--r--. 1 root root 25226884 Oct 13 00:03 cache/yum/x86_64/7Server/rhel-x86_64-server-7/packages/linux-firmware-20150904-43.git6ebf5d5.el7.noarch.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-7/other.xml.gz
-rw-r--r--. 1 root root 94979011 Nov 19 03:52 cache/yum/x86_64/7Server/rhel-x86_64-server-7/other.xml.gz
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-optional-7/gen/primary.xml
-rw-r--r--. 1 root root 18480842 Nov 19 03:52 cache/yum/x86_64/7Server/rhel-x86_64-server-optional-7/gen/primary.xml
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/rhel-x86_64-server-optional-7/gen/primary.xml.sqlite
-rw-r--r--. 1 root root 16640000 Nov 19 06:02 cache/yum/x86_64/7Server/rhel-x86_64-server-optional-7/gen/primary.xml.sqlite
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/mysql56-community/packages/mysql-community-server-5.6.27-2.el7.x86_64.rpm
-rw-r--r--. 1 root root 60492152 Sep 30 01:49 cache/yum/x86_64/7Server/mysql56-community/packages/mysql-community-server-5.6.27-2.el7.x86_64.rpm
[root@usbalp-nis01 var]# ll cache/yum/x86_64/7Server/mysql56-community/packages/mysql-community-client-5.6.27-2.el7.x86_64.rpm
-rw-r--r--. 1 root root 20076444 Sep 30 01:49 cache/yum/x86_64/7Server/mysql56-community/packages/mysql-community-client-5.6.27-2.el7.x86_64.rpm
[root@usbalp-nis01 var]# ll lib/samba/locking.tdb
-rw-r--r--. 1 root root 21700608 Nov 20 08:45 lib/samba/locking.tdb
[root@usbalp-nis01 var]# uname -a
Linux usbalp-nis01.corp.cubic.cub 3.10.0-229.4.2.el7.x86_64 #1 SMP Fri Apr 24 15:26:38 EDT 2015 x86_64 x86_64 x86_64 GNU/Linux
[root@usbalp-nis01 var]#