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1852e977f8
By default, `cryptsetup luksFormat` uses Argon2i as Password-Based Key Derivation Function (PBKDF), which not only has a CPU cost, but also a memory cost (to make brute-force attacks harder). The memory cost is based on the available system memory by default, which in the context of Ceph CSI can be a problem for two reasons: 1. Pods can have a memory limit (much lower that the memory available on the node, usually) which isn't taken into account by `cryptsetup`, so it can get OOM-killed when formating a new volume; 2. The amount of memory that was used during `cryptsetup luksFormat` will then be needed for `cryptsetup luksOpen`, so if the volume was formated on a node with a lot of memory, but then needs to be opened on a different node with less memory, `cryptsetup` will get OOM-killed. This commit sets the PBKDF memory limit to a fixed value to ensure consistent memory usage regardless of the specifications of the nodes where the volume happens to be formatted in the first place. The limit is set to a relatively low value (32 MiB) so that the `csi-rbdplugin` container in the `nodeplugin` pod doesn't require an extravagantly high memory limit in order to format/open volumes (particularly with operations happening in parallel), while at the same time not being so low as to render it completely pointless. Signed-off-by: Benoît Knecht <bknecht@protonmail.ch> |
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| .. | ||
| fscrypt | ||
| k8s | ||
| log | ||
| reftracker | ||
| cephcmds_test.go | ||
| cephcmds.go | ||
| cephconf.go | ||
| cluster_mapping_test.go | ||
| cluster_mapping.go | ||
| conn_pool_test.go | ||
| conn_pool.go | ||
| connection.go | ||
| credentials_test.go | ||
| credentials.go | ||
| crushlocation_test.go | ||
| crushlocation.go | ||
| crypto_test.go | ||
| crypto.go | ||
| cryptsetup.go | ||
| csiconfig_test.go | ||
| csiconfig.go | ||
| errors_test.go | ||
| errors.go | ||
| getsecret_test.go | ||
| httpserver.go | ||
| idlocker_test.go | ||
| idlocker.go | ||
| pidlimit_test.go | ||
| pidlimit.go | ||
| stripsecrets.go | ||
| topology_test.go | ||
| topology.go | ||
| util_test.go | ||
| util.go | ||
| validate.go | ||
| volid_test.go | ||
| volid.go | ||