CentOS 7.6

Download the Ceph source package listed in Software Requirements, save the source package to the /home directory, and decompress the package.
```
cd /home && tar -zxvf ceph-14.2.8.tar.gz
```
Modify the requirements.txt file in the dashboard folder.
1. Open the requirements.txt file.
  1
  vi /home/ceph-14.2.8/src/pybind/mgr/dashboard/requirements.txt
2. Press i to enter the insert mode and comment out pyopenssl.
3. Press Esc to exit the insert mode. Type :wq! and press Enter to save the file and exit.
The isa-l version of the Ceph 14.2.8 source code is early. Upgrade it as follows:
1. Go to the src directory.
```
cd /home/ceph-14.2.8/src
```
2. Back up the original isa-l and download the latest isa-l.
```
mv isa-l isa-l.bak
git clone https://github.com/intel/isa-l.git   
```
  After the upgrade is complete, the aarch64 directory exists in /home/ceph-14.2.8/src/isa-l/erasure_code/.

Install the patch.

cd /home && wget https://github.com/ceph/ceph/commit/53040e4c0e9e86710b8800dbb7ea15b3fa196ebf.patch
cd /home/ceph-14.2.8
patch -p1 < ../53040e4c0e9e86710b8800dbb7ea15b3fa196ebf.patch

Pack the modified Ceph source code into a new package in the tar.bz2 format.
```
cd /home && tar -zcvf ceph-14.2.8.tar.bz2 ceph-14.2.8
```

Compile the new Ceph package.

rpmdev-setuptree
cp /home/ceph-14.2.8/ceph.spec /root/rpmbuild/SPECS/
cp /home/ceph-14.2.8.tar.bz2 /root/rpmbuild/SOURCES/
cd /root/rpmbuild/SPECS/
rpmbuild -ba ceph.spec

Parent topic: Compiling Ceph