We get asked about Linux certification frequently. Candidates generally want to know if it is worth their time and effort to pursue a certification. In my opinion, the answer changes on a case-by-case basis. Overall, the tendency of the answer is largely derived by experience. For individuals that are either early in their career or new to Linux, it is likely to be more beneficial to attain a recognized certification than to not have one.
Without having prior professional experience to rely on, one can show their knowledge level with a certification in hand. This assists these individuals greatly in their search for new employment or advancement in their careers.
For individuals that do have prior professional experience, the benefits of a recognized certification dwindle based on the amount of experience an individual has. As I have always stated, any education is good education.
Therefore, even if you are a very experienced administrator, it is not going to hurt you in either your current role or positioning yourself for future employment elsewhere. But, do not count on it being a difference maker for you, at least in comparison to individuals with less experience than you possess. Ultimately, if you are a person that is in a continuous quest for knowledge and feel a certification demonstrates that knowledge, by all means pursue it.