Troubleshooting

Problem 1: Required dependencies in the compilation process are not installed

Symptom

An error similar to "Could NOT find LTTngUST (missing: LTTNGUST_LIBRARIES LTTNGUST_INCLUDE_DIRS" is reported.

Troubleshooting Procedure

Install the required dependencies based on the error message.

yum install -y lttng-ust-devel keyutils-libs-devel openldap-devel leveldb-devel snappy-devel lz4-devel curl-devel expat-devel openssl-devel libbabeltrace-devel librabbitmq-devel rdma-core-devel python2-Cython python3-Cython   

Problem 2: ceph-deploy mon create-initial failed

Symptom

"ceph-deploy mon create-initial" failed.

Troubleshooting Procedure

Add the Ceph user group and user, and reinstall Ceph.

groupadd ceph
useradd ceph -g ceph

Problem 3: "No module named werkzeug.serving" is reported when the Ceph status is queried

Symptom

"No module named werkzeug.serving" is reported when the Ceph status is queried.

Troubleshooting Procedure

Install werkzeug.

pip install werkzeug

Problem 4: "No module named OpenSSL" is reported when the Ceph status is queried

Symptom

"No module named OpenSSL" is reported when the Ceph status is queried.

Troubleshooting Procedure

Install OpenSSL.

yum install python2-pyOpenSSL.noarch  
yum install python3-pyOpenSSL.noarch  

Problem 5: When do_cmake.sh is executed and compiled, an error is displayed, indicating that the dynamic library is missing

Symptom

The scenarios are similar to the following:

• kps_bluestore cannot be found.

  

• The lkps_ec library cannot be found.

  

Troubleshooting Procedure

Create soft links.

ln -snf /usr/lib64/libkps_bluestore.so.1.0.0 /usr/lib64/libkps_bluestore.so
ln -snf /usr/lib64/libkps_ec.so.1.2.1 /usr/lib64/libkps_ec.so