MongoDB : Getting “parsing errors” When Running ‘yum repolist’

The Problem

When adding an extra repository of the public yum into existing yum repository configuration file, the following errors are shown:

# yum repolist
Loaded plugins: langpacks, ulninfo
File contains parsing errors: file:///etc/yum.repos.d/public-yum-ol7.repo
[line 91]: name=Latest Unbreakable Enterprise Kernel Release 4 for Oracle Linux 7Server (x86_64)
[line 92]: baseurl=https://yum.oracle.com/repo/OracleLinux/OL7/UEKR4/x86_64/
[line 93]: gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
[line 94]: gpgcheck=1
[line 95]: enabled=1

The following stanzas were added to /etc/yum.repos.d/public-yum-ol7.repo

 [ol7_UEKR4]
 name=Latest Unbreakable Enterprise Kernel Release 4 for Oracle Linux $releasever ($basearch)
 baseurl=http://public-yum.oracle.com/repo/OracleLinux/OL7/UEKR4/$basearch/
 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
 gpgcheck=1
 enabled=1

The Solution

There is a space at the beginning of each line of the new entries. The file looks like:

[ol7_latest]

name=Oracle Linux $releasever Latest ($basearch)
baseurl=http://public-yum.oracle.com/repo/OracleLinux/OL7/latest/$basearch/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
gpgcheck=1
enabled=1

[ol7_UEKR3]
name=Latest Unbreakable Enterprise Kernel Release 3 for Oracle Linux $releasever ($basearch)
baseurl=http://public-yum.oracle.com/repo/OracleLinux/OL7/UEKR3/$basearch/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
gpgcheck=1
enabled=1

 [ol7_UEKR4]
 name=Latest Unbreakable Enterprise Kernel Release 4 for Oracle Linux $releasever ($basearch)
 baseurl=http://public-yum.oracle.com/repo/OracleLinux/OL7/UEKR4/$basearch/
 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
 gpgcheck=1
 enabled=1

Follow the steps outlined below to resolve the issue:
1. Edit the yum repo file /etc/yum.repos.d/public-yum-ol7.repo.

# vi /etc/yum.repos.d/public-yum-ol7.repo

2. Delete the space at the beginning of each line:

[ol7_UEKR4]
name=Latest Unbreakable Enterprise Kernel Release 4 for Oracle Linux $releasever ($basearch)
baseurl=http://public-yum.oracle.com/repo/OracleLinux/OL7/UEKR4/$basearch/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
gpgcheck=1
enabled=1

3. Save and quit.
4. Check that the stanzas were saved properly:

# less /etc/yum.repos.d/public-yum-ol7.repo

5. Proceed to run ‘yum repolist’ again:

# yum repolist